Caterpillarwork toolhammer

Caterpillar H63

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar H63 is a hydraulic hammer (breaker) work tool, not a powered machine in its own right: it has no engine, transmission, or undercarriage of its own. It mounts to the stick of a carrier excavator, backhoe, or skid steer in the roughly 3,000-6,500 kg operating weight class and draws its impact energy entirely from the carrier's auxiliary hydraulic circuit. At an operating weight of about 300 kg (660 lb) and a 63 mm (2.5 in) tool/moil diameter, the H63 sat in the mid-light end of Caterpillar's original H-series hammer lineup alongside the H45, H50, H70, H90C, and H100. Caterpillar also offered a sound-suppressed H63s variant sharing the same power cell and tool bits inside a noise-dampened housing. Caterpillar's own product literature names the H65D as the direct replacement for the H63/H63s, built around a redesigned single-piece power cell in place of the H63's older bolted multi-piece body.

Within the H-series generation, the H63 and its sound-suppressed H63s sibling share one power cell and one parts book with the wider H45-H100 family; the difference between the two is housing and shrouding, not impact class or tool bits. Reported certified impact energy for the H63 varies between Caterpillar publications (some figures sit near 372 J, others closer to 678 J), a genuine inconsistency in the OEM's own catalog history rather than a running production change, so a specific unit's rating should be confirmed against its own plate or manual. In the used and parts market today, the H63 remains a relevant size class for 3-6 tonne carriers: its age keeps acquisition and rebuild costs competitive against current D-series and Es-series equivalents, but because Caterpillar no longer positions it as a current product, sourcing tool bushings, seal kits, and accumulator service parts increasingly runs through the shared H45-H100 parts book rather than a dedicated current-model channel.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.

Caterpillar H63 specifications

Engine

Power source

No onboard engine. Hydraulic hammer, driven entirely by the carrier machine's auxiliary hydraulic circuit; not self-propelled.

Weights

Operating weight (H63, standard)	300 kg (660 lb) — includes hammer, standard tool, and average mounting bracket
Operating weight (H63s, sound-suppressed)	315 kg (694 lb) — same inclusions; suppression housing adds mass over the standard H63
Recommended carrier operating weight class	3,000-6,500 kg (6,600-14,300 lb)

Dimensions

Overall width with mounting bracket (H63)	470 mm (18.5 in)
Overall width with mounting bracket (H63s)	440 mm (17.3 in)
Housing (lateral) width	380 mm (15.0 in) — same for H63 and H63s
Hammer housing / side-plate length	1,025 mm (40.3 in) — same for H63 and H63s
Standard tool (moil) diameter	63 mm (2.5 in)
Standard tool length	364 mm (14.3 in) typical; actual length varies with tool type (moil, chisel, blunt, spade)

Performance

Impact (blow) frequency	About 400-2,000 bpm; one catalog edition lists 420-2,000 bpm
Impact energy	372 J, CIMA-MBMB certified rating (skid-steer-specific hammer catalog). A separate, broader Cat hammer-line catalog lists a 678 J nominal energy class for the same model. Figures vary by catalog edition/certification standard — use the CIMA-certified value for real-world comparison.
Acceptable oil flow	About 20-100 L/min (5.3-26 gal/min); catalog editions differ on the low end (20 vs 30 L/min / ~5.3 vs 8 gal/min)
Operating (system) pressure	13,000-14,000 kPa (1,885-2,030 psi), approximate at max flow and back pressure — varies by catalog edition
Travel speed / gradeability / drawbar	Not applicable — boom-mounted static attachment with no onboard drivetrain

Service capacities (summary)

Engine oil / fuel / coolant	Not applicable — no onboard engine
Hydraulic supply	Draws directly from the carrier's auxiliary hydraulic circuit; no separate onboard reservoir with a published capacity
High-pressure accumulator	Dampens carrier-pump pressure spikes and protects the hydraulic circuit; nitrogen pre-charge value not published in the sourced factory literature — verify with dealer/service manual
Low-pressure accumulator	Assists the piston power stroke; membrane-style design reduces routine maintenance versus a gas-only accumulator
Tool lubrication	Grease-lubricated upper and lower tool bushings; auto-lube port provided for conversion to automatic greasing. No factory-published grease capacity or interval volume found.

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

H63 fluids & capacities

System	Capacity	Recommended fluid
Grease - tool/bushing lubrication	Grease fitting(s) at the upper/lower tool bushing; apply approximately 10-15 strokes from a grease gun every 2 hours of operation (about 4 times daily)	Cat Hydraulic Hammer Paste - a copper- and graphite-based extreme-pressure paste formulated for hydraulic hammer tool/bushing friction and heat; no engine-oil-type viscosity grade applies
Accumulator - nitrogen gas charge (low-pressure and high-pressure chambers)	Two gas chambers in the power cell: a low-pressure chamber that assists the piston power stroke and a high-pressure chamber that dampens pressure spikes to protect the carrier's hydraulic system; inspect/recharge every 600 service hours or 1 year, whichever comes first. Exact charge pressure is set per the cold vs. running-temperature procedure in the machine OMM and is not published in general literature - varies by configuration/series	Dry nitrogen gas only, introduced and checked through the hammer's nitrogen charging port with a dedicated nitrogen charging kit; never substitute oxygen or shop air
Carrier hydraulic circuit oil (drives the hammer; no separate reservoir on the tool itself)	Acceptable oil flow to the hammer circuit is listed as roughly 20-100 L/min (5.2-26 gal/min) in one Cat catalog edition and 30-100 L/min (8-26 gal/min) in another; operating pressure is listed as approximately 13 000 kPa (1,890 psi) in one edition and 14 000 kPa (2,030 psi) in another at maximum flow and back pressure - varies by configuration/series/edition	Carrier's own hydraulic oil, matched to ambient temperature - Cat HYDO Advanced 10 (SAE 10W), Cat HYDO Advanced 20/30, or Cat Bio HYDO Advanced are the preferred fluids for most Cat machine hydraulic systems; for machines equipped with a hydraulic hammer, Caterpillar's fluids guidance specifically says to avoid SAE 0W and SAE 5W viscosity grades; acceptable alternate commercial oils (Cat DEO, Cat TDTO, Cat MTO) require a minimum 900 ppm zinc (ZDDP) anti-wear additive level

Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.

Caterpillar H63 maintenance schedule

Service interval	Tasks
Every 10 h	Inspect the tool, retaining pin, and pin lock for wear or cracking before each shift. Apply Cat Hydraulic Hammer paste to the tool bushing at least every 2 hours of hammering, more often in abrasive material. Check hydraulic hose connections, fittings, and clamps at the hammer for leaks, abrasion, or looseness. Look for oil seepage at the front head, an early sign of a worn dust or piston seal. Confirm the tool has normal working clearance in the bushing and is not seized or excessively loose. Verify nitrogen accumulator charge pressure weekly with a test kit and top off if below the specified range.
Every 250 h	Remove the tool and inspect the bushing bore for elongation or egg-shaping; renew the bushing if clearance exceeds the allowable limit. Check tie-rod/side-bolt torque in a cross pattern and retighten to specification if any rod has loosened. Inspect the carrier-side mounting bracket pins and bushings for wear or excess play. Confirm carrier hydraulic flow and pressure at the hammer circuit fall within 20-100 L/min and roughly 13,000-14,000 kPa.
Every 500 h	Inspect the front head bushing and dust seal; replace if worn or leaking. Check the full seal set for seepage at the front and back head joints. Inspect the internal control valve area for abnormal wear or scoring. Torque-check all body through bolts and tie rods to specification. Re-verify nitrogen accumulator charge in both the high- and low-pressure chambers.
Every 1,000 h	Replace the seal kit and accumulator membrane as a set, or sooner if a year has passed since the last renewal. Disassemble the power cell and inspect the piston for scoring, step wear, or nose damage. Inspect the cylinder bore for wear or scoring and measure against service limits. Renew all wear bushings, front and through, as a matched set rather than individually.
Every 2,000 h	Perform a full power-cell teardown: inspect piston, cylinder liner, control valve, and all seals together. Check tie rods for stretch or fatigue beyond service limits and replace as a set if any rod is out of specification. Inspect front head and back head castings for bore wear; recondition or replace if beyond allowable limits. Reassess overall tool and bushing wear pattern to decide between partial and full tool-set renewal.
Every 4,000 h	Plan a complete power-cell rebuild or exchange, since cumulative wear across the piston, cylinder, and valve typically exceeds economical field-repair limits by this point. Replace mounting bracket pins and bushings as a set if not already renewed at an earlier interval. Weigh continued rebuild investment against outright exchange, given the H63's position as an older H-series unit sourced through a shared H45-H100 parts book. Retain records of prior seal, bushing, and accumulator service to support the rebuild-versus-replace decision.

Servicing the H63 beyond the schedule

Predictive Maintenance & Fluid Analysis

The H63 has no engine or gearbox to sample, so predictive care centers on the carrier's hydraulic oil and the hammer's nitrogen charge. Send carrier hydraulic fluid for particle-count analysis at normal service intervals; contamination that would barely trouble the carrier's cylinders will accelerate the H63's control valve and piston-cylinder wear. Log nitrogen accumulator pressure readings over time; a steady downward drift signals a leaking charging valve or bladder well before impact force noticeably drops on the job.

Corrective & Common Repairs

Most H63 callouts trace to a small set of recurring symptoms: a loose, rattling tool from a worn bushing or retaining pin; oil weeping at the front head from a failed dust or piston seal; and weak or erratic blows from an undercharged nitrogen accumulator or carrier flow/pressure mismatched to the hammer's 20-100 L/min, 13,000-14,000 kPa window. Confirm carrier auxiliary settings before condemning the hammer itself; many 'no power' complaints trace to a carrier relief-valve or flow-control fault, not a worn power cell.

Overhaul & Rebuild Points

A full H63 rebuild centers on the power cell: piston and cylinder bore condition, tie-rod/side-bolt integrity, and the complete seal and bushing set. Because the H63 uses an older bolted multi-piece body rather than the single-piece cell of its H65D successor, tie rods carry the clamping load between front head, cylinder, and back head; inspect them for stretch or thread damage at every teardown and always retorque in a cross pattern to specification, never by feel. Renew the nitrogen membrane and all bushings as a set rather than piecemeal.

Seasonal & Environment Servicing

Nitrogen pressure is temperature-sensitive: recheck accumulator charge whenever the H63 moves between hot and cold season use, since a charge set correctly in summer heat can read low once ambient temperature drops. In abrasive demolition or quarry dust, shorten the tool-bushing grease cycle below the standard 2-hour interval to keep grit from packing the bushing bore. Before extended storage, retract the tool, relieve residual hydraulic pressure at the carrier's quick-couplers, and store the hammer with the tool pointed down to keep the bushing greased and seals wetted.

H63 common service parts

Part number	Part	Notes
8T-7915	Adapter-To Transmission Filter	Scheduled service item	Check fitment →

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H63 attachments & work tools

Tool bits offered

The H63 runs a 63 mm (2.5 in) shank tool matching its model number, offered as a moil (cone) point for general breaking, tunneling and trenching, or as a chisel (parallel/cross-cut) for asphalt cutting, frozen or compacted ground and confined demolition work.

Carrier/excavator class

Sized for excavators and backhoe loaders in roughly the 3-6.5 tonne (6,600-14,300 lb) operating-weight class, in line with its 372 J certified impact energy and 20-100 l/min working oil-flow window; exact carrier fit varies by machine hydraulic configuration.

Mounting bracket system

Attaches via a hammer-specific top/head mounting bracket with a pin-and-bushing kit that clamps the hammer body to the carrier's stick and linkage, the same bracket interface used across the compact H-series hammer line; brackets are sized specifically to the H63/H63s housing.

Factory options

Offered as a standard housing (H63) or a sound-suppressed housing variant (H63s) for noise-restricted job sites, both sharing the same 372 J impact-energy rating and tool interface; an auto-lube grease-port option is available for automatic tool-bit lubrication.

All H63 assemblies by section

Every catalogued assembly group for the Caterpillar H63. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Frame And Body

203-0922 Head Gp-Front

20***22	Head Group-Front	1
3J***07	Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	1
3Q***25	Fitting-Hydraulic	2

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203-0912 Head Gp-Front

20***12	Head Group-Front	1
3J***07	Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	1
3Q***25	Fitting-Hydraulic	2

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203-0932 Head Gp-Front

20***32	Head Group-Front	1
3J***07	Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	1
3Q***25	Fitting-Hydraulic	2

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203-0927 Head Gp-Front

20***27	Head Group-Front	1
3J***07	Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	1
3Q***25	Fitting-Hydraulic	2

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203-0908 Head Gp-Front

20***08	Head Group-Front	1
3J***07	Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	1
3Q***25	Fitting-Hydraulic	2

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108-9421 Plate Gp-Hammer

09***69	Pin-Cotter	2
10***14	Spacer	2
10***15	Spacer	2
10***16	Spacer	4

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191-9801 Plate Gp-Hammer

09***69	Pin-Cotter	2
10***15	Spacer	2
19***00	Plate Group-Hammer	1
19***01	Plate Group-Hammer	1

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157-2242 Plate Gp-Hammer

10***47	Pin-Spring	2
12***37	Buffer	2
15***94	Plate Set-Housing	1
15***42	Plate Group-Hammer	1

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157-2208 Plate Gp-Hammer

10***47	Pin-Spring	2
12***37	Buffer	2
12***66	Pin	2
15***92	Plate Set-Housing	1

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124-5316 Plate Gp-Hammer

10***14	Spacer	2
10***15	Spacer	2
10***16	Spacer	4
12***16	Plate Group-Hammer	1

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138-1114 Plate Gp-Hammer

09***73	Bolt; (Socket Head) (M12x1.75x60mm)	8
12***37	Buffer	2
12***40	Pin-Cotter	2
13***14	Plate Group-Hammer	1

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124-9642 Plate Gp-Hammer

12***42	Plate Group-Hammer	1
12***59	Plate Set-Housing	1
12***60	Damper-Lh	1
12***61	Damper-Rh	1

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194-6506 Plate Gp-Hammer

10***47	Pin-Spring	2
12***35	Tube-Spacer	2
12***37	Buffer	2
19***05	Plate Set-Housing	1

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124-4706 Plate Gp-Hammer

09***73	Bolt; (Socket Head) (M12x1.75x60mm)	8
12***35	Tube-Spacer	2
12***36	Ring-Spacer	16
12***37	Buffer	2

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152-0965 Plate Gp-Hammer

15***65	Plate Group-Hammer	1
15***79	Buffer	1
15***87	Plate Set-Housing	1
15***89	Rod-Threaded	2

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138-1138 Plate Gp-Hammer

12***37	Buffer	2
12***40	Pin-Cotter	2
12***66	Pin	2
13***38	Plate Group-Hammer	1

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152-0963 Plate Gp-Hammer

12***66	Pin	2
15***63	Plate Group-Hammer	1
15***78	Plate Set-Housing	1
15***79	Buffer	1

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171-1375 Plate Gp-Hammer

09***69	Pin-Cotter	2
10***15	Spacer	2
17***75	Plate Group-Hammer	1
17***76	Plate Set-Housing	1

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158-4544 Plate Gp-Hammer

12***66	Pin	2
15***96	Pad-Buffer	1
15***44	Plate Group-Hammer	1
15***45	Plate Set-Housing	1

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152-2516 Plate Gp-Hammer

12***66	Pin	2
15***79	Buffer	2
15***16	Plate Group-Hammer	1
15***17	Plate Set-Housing	1

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158-4540 Plate Gp-Hammer

15***40	Plate Group-Hammer	1
15***55	Plate Set-Housing	1
3E***01	Lockwasher	8
3Q***03	Buffer	1

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152-2524 Plate Gp-Hammer

15***79	Buffer	2
15***24	Plate Group-Hammer	1
15***25	Plate Set-Housing	1
15***14	Rod-Threaded	2

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158-4542 Plate Gp-Hammer

12***66	Pin	2
15***42	Plate Group-Hammer	1
15***48	Plate Set-Housing	1
15***49	Damper-Rh	1

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130-3794 Plate Gp-Hammer

09***69	Pin-Cotter	2
13***94	Plate Group-Hammer	1
3E***01	Lockwasher	8
3Q***02	Plate Set-Housing	1

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112-4843 Plate Gp-Hammer

09***70	Pin-Cotter	2
11***43	Plate Group-Hammer	1
12***34	Plate Set-Housing	1
12***35	Tube-Spacer	2

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157-2241 Plate Gp-Hammer

10***47	Pin-Spring	2
12***35	Tube-Spacer	2
12***37	Buffer	2
15***30	Bushing	2

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121-9539 Plate Gp-Hammer

10***15	Spacer	2
12***39	Plate Group-Hammer	1
12***40	Plate As-Lh	1
12***41	Plate As-Rh	1

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Hydraulic System

209-7382 Accumulator Gp-Hydraulic

15***28	Kit-Seal	1
20***77	Cover	1
20***82	Accumulator Group-Hydraulic	1
20***83	Plug As	1

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3q-7305 Accumulator Gp-Hydraulic

3E***24	Lockwasher	8
3E***04	Seal-O-Ring; (119.5mm Id)	1
3Q***05	Accumulator Group-Hydraulic	1
3Q***19	Bottom	1

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232-3123 Accumulator Gp-Hydraulic

15***28	Kit-Seal	1
20***78	Cover	1
20***83	Plug As	1
23***23	Accumulator Group-Hydraulic	1

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229-1501 Accumulator Gp-Hydraulic

12***51	Kit-Seal	1
15***11	Base; (High Pressure)	1
15***13	Diaphragm	1
20***83	Plug As	1

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229-2894 Accumulator Gp-Hydraulic

09***27	Seal-O-Ring	1
11***93	Base; (Low Pressure)	1
11***95	Membrane-Accumulator	1
11***97	Bolt	8

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122-7956 Accumulator Gp-Hydraulic

10***45	Kit-Seal	1
10***51	Diaphragm	1
10***55	Base	1
10***56	Cover	1

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187-5338 Accumulator Gp-Hydraulic

15***50	Base; (High Pressure)	1
15***51	Cover	1
15***52	Diaphragm; (High Pressure)	1
15***53	Kit-Seal	1

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187-7734 Accumulator Gp-Hydraulic

15***28	Kit-Seal	1
18***34	Accumulator Group-Hydraulic	1
3E***24	Lockwasher	8
3E***05	Seal-O-Ring	1

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209-7381 Accumulator Gp-Hydraulic

20***78	Cover	1
20***81	Accumulator Group-Hydraulic	1
20***83	Plug As	1
3E***24	Lockwasher	8

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229-2893 Accumulator Gp-Hydraulic

11***98	Base; (High Pressure)	1
11***09	Membrane-Accumulator	1
11***12	Kit-Seal	1
20***83	Plug As	1

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122-7317 Accumulator Gp-Hydraulic

11***98	Base; (High Pressure)	1
11***99	Cover-Accumulator	1
11***09	Membrane-Accumulator	1
11***12	Kit-Seal	1

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187-5290 Accumulator Gp-Hydraulic

15***11	Base; (High Pressure)	1
15***12	Cover	1
15***13	Diaphragm	1
15***15	Kit-Seal	1

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229-1502 Accumulator Gp-Hydraulic

11***09	Membrane-Accumulator	1
12***51	Kit-Seal	1
15***09	Base; (Low Pressure)	1
20***83	Plug As	1

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229-1540 Accumulator Gp-Hydraulic

15***47	Base; (Low Pressure)	1
15***49	Diaphragm	1
15***53	Kit-Seal	1
20***83	Plug As	1

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122-7314 Accumulator Gp-Hydraulic

09***27	Seal-O-Ring	1
11***93	Base; (Low Pressure)	1
11***94	Cover-Accumulator	1
11***95	Membrane-Accumulator	1

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122-7955 Accumulator Gp-Hydraulic

09***06	Bolt-Socket Head; (M16x2x80-mm)	4
10***45	Kit-Seal	1
10***49	Base	1
10***50	Cover	1

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187-5289 Accumulator Gp-Hydraulic

11***09	Membrane-Accumulator	1
15***09	Base; (Low Pressure)	1
15***10	Cover	1
15***15	Kit-Seal	1

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3q-7304 Accumulator Gp-Hydraulic

15***28	Kit-Seal	1
3E***24	Lockwasher	4
3E***34	Seal-O-Ring	1
3Q***04	Accumulator Group-Hydraulic	1

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229-1547 Accumulator Gp-Hydraulic

09***06	Bolt-Socket Head; (M16x2x80-mm)	4
10***45	Kit-Seal	1
10***49	Base	1
10***54	Diaphragm	1

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187-5339 Accumulator Gp-Hydraulic

15***47	Base; (Low Pressure)	1
15***48	Cover	1
15***49	Diaphragm	1
15***53	Kit-Seal	1

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229-1546 Accumulator Gp-Hydraulic

10***45	Kit-Seal	1
10***51	Diaphragm	1
10***55	Base	1
20***83	Plug As	1

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229-1539 Accumulator Gp-Hydraulic

15***50	Base; (High Pressure)	1
15***52	Diaphragm; (High Pressure)	1
15***53	Kit-Seal	1
20***83	Plug As	1

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190-1446 Chart-Connecting Lines

19***46

Chart-Connecting Lines

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191-4886 Chart-Connecting Lines

19***86

Chart-Connecting Lines

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152-2553 Kit-Seal

10***58	Seal	1
15***53	Kit-Seal	1
15***09	Seal	1
15***11	Seal	2

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116-8212 Kit-Seal

09***27	Seal-O-Ring	1
11***86	Seal	2
11***87	Seal	4
11***90	Seal; (90.0mm Id)	1

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152-2515 Kit-Seal

10***60	Seal	1
14***14	Seal-U-Cup	1
15***90	Seal-Wiper	1
15***91	Seal	1

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120-7351 Kit-Seal

09***83	Seal-O-Ring (Id=174.00mm)	1
12***31	Shim, .025" Thk.	2
12***33	Seal	1
12***34	Wiper	1

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150-8828 Kit-Seal

15***28	Kit-Seal	1
15***22	Seal	1
15***36	Seal	2
15***37	Seal	1

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3q-7325 Kit-Seal

11***22	Seal	1
3E***02	Seal-O-Ring; (104.5mm Id)	2
3E***04	Seal-O-Ring; (119.5mm Id)	1
3E***14	Seal-O-Ring	2

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109-4745 Kit-Seal

10***45	Kit-Seal	1
10***91	Seal-O-Ring	1
10***92	Seal-O-Ring	2
10***56	Seal	1

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202-9134 Lines Gp-Connecting

17***64	Hose As	2
20***34	Lines Group-Connecting	1
6V***46	Seal-O-Ring	4
7M***85	Seal,Adapter,Motor Part Of Kit P/N 5r***29	2

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298-4057 Lines Gp-Connecting

29***57	Lines Group-Connecting	1
29***58	Hose As	2
5K***90	Seal-To Hydraulic Cooler Inlet Port	2
6V***57	Nut-Face Seal; (1-7/16-12-Thd)	2

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206-7693 Lines Gp-Connecting

13***63	Hose As	2
20***93	Lines Group-Connecting	1
5K***90	Seal-To Hydraulic Cooler Inlet Port	4
6V***35	Connector-Seal; (1- 5/16-12)	4

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202-9132 Lines Gp-Connecting

17***70	Hose As	2
20***32	Lines Group-Connecting	1
6V***16	Connector-Seal; (1- 5/16-12)	2
6V***46	Seal-O-Ring	4

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177-1865 Lines Gp-Connecting

17***65	Lines Group-Connecting	1
17***64	Hose As	2
17***88	Adapter As	2
6V***57	Seal-O-Ring (Id=29.74mm)	1

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206-7691 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
12***57	Hose-Supply	1
12***59	Hose-Return	1

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206-7692 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
12***71	Hose-Supply	1
12***72	Hose-Return	1

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203-1011 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
15***81	Hose As	2
20***11	Lines Group-Connecting	1

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172-3412 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
16***79	Adapter	2
16***43	Seal	1

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177-1855 Lines Gp-Connecting

16***43	Seal	1
17***55	Lines Group-Connecting	1
17***05	Adapter As	2
17***64	Hose As	2

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180-4179 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
16***79	Adapter	2
16***43	Seal	1

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206-7695 Lines Gp-Connecting

13***63	Hose As	2
14***35	Connect Group; (Each Includes)	2
20***95	Lines Group-Connecting	1
3D***24	O-Ring - For Oil Drain & Level Plug (Items 3 & 7)	2

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203-1014 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
17***58	Hose As	2
20***14	Lines Group-Connecting	1

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153-6477 Lines Gp-Connecting

15***96	Fitting As; (Quick Disconnect, Male)(Quick Disconnect)	1
15***97	Fitting As; (Quick Disconnect, Female)	1
15***81	Hose As	2
15***77	Lines Group-Connecting	1

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177-1858 Lines Gp-Connecting

17***58	Lines Group-Connecting	1
17***77	Hose As	2
6V***46	Seal-O-Ring	4
7M***85	Seal,Adapter,Motor Part Of Kit P/N 5r***29	2

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203-0998 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
15***81	Hose As	2
20***98	. Spring, Lines Group-Connecting	1

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161-1511 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	2
10***06	Fitting; (Quick Disconnect, Male)	2
12***34	Coupling As	2
14***98	Grommet	4

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202-9128 Lines Gp-Connecting

17***64	Hose As	2
20***28	Lines Group-Connecting	1
3D***24	O-Ring - For Oil Drain & Level Plug (Items 3 & 7)	2
6V***37	Adapter; (-12/-12 Orb/Orfs)	2

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157-7193 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
15***81	Hose As	2
15***44	Seal	1

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174-2299 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
13***75	Hose As	2
17***99	Lines Group-Connecting	1

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171-2566 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
16***79	Adapter	2
16***43	Seal	1

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203-1008 Lines Gp-Connecting

15***96	Fitting As; (Quick Disconnect, Male)(Quick Disconnect)	1
15***97	Fitting As; (Quick Disconnect, Female)	1
15***81	Hose As	2
20***08	Lines Group-Connecting	1

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261-9508 Lines Gp-Connecting

26***08	Lines Group-Connecting	1
4J***20	Seal (For Tilt Ports On Valve)	2
5K***90	Seal-To Hydraulic Cooler Inlet Port	2
6V***16	Connector-Seal; (1- 5/16-12)	2

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202-9133 Lines Gp-Connecting

14***48	Fitting As; (Quick Disconnect, Male)	1
14***49	Fitting As; (Quick Disconnect, Female)	1
17***57	Hose As	2
20***33	Lines Group-Connecting	1

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177-1907 Lines Gp-Connecting

17***07	Lines Group-Connecting	1
17***05	Hose As	2
1P***02	Seal-Rectangular 28.83mm(1.136in) Id	2
4I***65	Boss	2

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180-4006 Lines Gp-Connecting

15***96	Fitting As; (Quick Disconnect, Male)(Quick Disconnect)	1
15***97	Fitting As; (Quick Disconnect, Female)	1
15***44	Seal	1
16***11	Adapter As	2

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203-0984 Lines Gp-Connecting

10***15	Connector	2
15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
16***85	Hose As	2

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203-1010 Lines Gp-Connecting

15***96	Fitting As; (Quick Disconnect, Male)(Quick Disconnect)	1
15***97	Fitting As; (Quick Disconnect, Female)	1
18***19	Hose As	2
20***10	Lines Group-Connecting	1

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206-7756 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
12***57	Hose-Supply	1
12***59	Hose-Return	1

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164-2430 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
16***79	Adapter	2
16***30	Lines Group-Connecting	1

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159-2065 Lines Gp-Connecting

15***65	Lines Group-Connecting	1
17***70	Hose As	2
17***88	Adapter As	2
6V***57	Seal-O-Ring (Id=29.74mm)	1

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202-9130 Lines Gp-Connecting

20***30	Lines Group-Connecting	1
21***69	Hose As	2
6V***16	Connector-Seal; (1- 5/16-12)	2
6V***46	Seal-O-Ring	4

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295-0274 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
29***74	Lines Group-Connecting	1
29***26	Hose As	2

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158-4617 Lines Gp-Connecting

15***17	Lines Group-Connecting	1
6V***16	Connector-Seal; (1- 5/16-12)	4
6V***46	Seal-O-Ring	4
7M***85	Seal,Adapter,Motor Part Of Kit P/N 5r***29	4

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203-0977 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
17***58	Hose As	2
20***77	Lines Group-Connecting	1

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177-1866 Lines Gp-Connecting

17***66	Lines Group-Connecting	1
17***64	Hose As	2
17***88	Adapter As	2
6V***57	Seal-O-Ring (Id=29.74mm)	1

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294-9536 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
29***36	Lines Group-Connecting	1
29***25	Hose As	2

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177-1856 Lines Gp-Connecting

16***43	Seal	1
17***56	Lines Group-Connecting	1
17***05	Adapter As	2
17***50	Hose As	2

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171-2567 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
17***67	Lines Group-Connecting	1
17***18	Hose As	2

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202-9129 Lines Gp-Connecting

17***50	Hose As	2
20***29	Lines Group-Connecting	1
3D***24	O-Ring - For Oil Drain & Level Plug (Items 3 & 7)	2
6V***37	Adapter; (-12/-12 Orb/Orfs)	2

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172-3411 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
15***44	Seal	1
16***11	Adapter As	2

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177-1871 Lines Gp-Connecting

17***71	Lines Group-Connecting	1
17***59	Hose As	2
6V***16	Connector-Seal; (1- 5/16-12)	2
6V***46	Seal-O-Ring	2

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206-7696 Lines Gp-Connecting

13***61	Hose As	2
14***35	Connect Group; (Each Includes)	2
20***96	Lines Group-Connecting	1
3D***24	O-Ring - For Oil Drain & Level Plug (Items 3 & 7)	2

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157-7194 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
15***81	Hose As	2
15***94	Lines Group-Connecting	1

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206-7694 Lines Gp-Connecting

13***83	Hose As	2
20***94	Lines Group-Connecting	1
5K***90	Seal-To Hydraulic Cooler Inlet Port	4
6V***35	Connector-Seal; (1- 5/16-12)	4

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203-0981 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
18***41	Hose As	2
20***81	Lines Group-Connecting	1

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203-0983 Lines Gp-Connecting

15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
18***95	Hose As	2
20***83	Lines Group-Connecting	1

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131-2962 Lines Gp-Connecting

13***62	Lines Group-Hammer; -Custom	1
13***63	Hose As	2
15***95	Adapter As	2
15***46	Seal	1

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131-2882 Lines Gp-Connecting

13***82	Lines Group-Hammer; -Custom	1
13***83	Hose As	2
15***95	Adapter As	2
15***46	Seal	1

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131-2564 Lines Gp-Connecting

13***63	Hose As	2
13***64	Lines Group-Hammer; -Custom	1
15***95	Adapter As	2
15***46	Seal	1

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127-9577 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
12***71	Hose-Supply	1
12***72	Hose-Return	1

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127-9579 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
12***79	Lines Group-Hammer; -Custom	1
12***57	Hose-Supply	1

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131-3160 Lines Gp-Connecting

13***60	Lines Group-Hammer; -Custom	1
13***61	Hose As	2
15***95	Adapter As	2
15***46	Seal	1

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128-6724 Lines Gp-Connecting

10***01	Fitting; (Quick Disconnect, Female)	1
10***06	Fitting; (Quick Disconnect, Male)	1
12***57	Hose-Supply	1
12***59	Hose-Return	1

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152-3395 Lubrication Gp-Automatic

06***44	Grommet	1
10***79	Switch As-Pressure; (Implement/Swing & Travel)	1
12***90	Coupling-Permanent	1
12***13	Coupling-Permanent	5

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152-5342 Lubrication Gp-Automatic

06***44	Grommet	1
10***82	Switch As-Pressure	1
12***90	Coupling-Permanent	1
12***13	Coupling-Permanent	5

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148-8098 Lubrication Gp-Automatic

10***03	Coupling	4
10***05	Connector	4
12***72	Hose; (1500-cm)	0
14***39	Pump Group-Lubrication	1

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153-7532 Pump Gp-Lubrication

15***32	Pump Group-Lubrication	1
15***17	Valve As-Relief; (Grease Pressure)	1
15***19	Board-Circuit	1
15***20	Cover-Housing	1

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152-3402 Pump Gp-Lubrication

15***02	Pump Group-Lubrication	1
15***17	Valve As-Relief; (Grease Pressure)	1
15***19	Board-Circuit	1
15***20	Cover-Housing	1

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187-5343 Valve Gp-Control

09***23	Plug	2
10***45	Kit-Seal	1
10***48	Body-Valve	1
10***61	Spool-Valve	1

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187-7735 Valve Gp-Control

09***29	Plug	2
15***28	Kit-Seal	1
15***10	Body-Valve	1
15***47	Spool-Valve	1

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187-5340 Valve Gp-Control

09***23	Plug	2
15***30	Body-Valve	1
15***44	Spool-Valve	1
15***53	Kit-Seal	1

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203-0928 Valve Gp-Control

15***28	Kit-Seal	1
15***47	Spool-Valve	1
20***26	Body Group-Valve	1
20***28	Valve Group-Control	1

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187-7733 Valve Gp-Control

11***56	Body-Valve	1
11***83	Spool-Valve	1
11***12	Kit-Seal	1
15***82	Plug	2

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203-0990 Valve Gp-Control

10***45	Kit-Seal	1
10***61	Spool-Valve	1
10***60	Seal	1
20***88	Body Group-Valve	1

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187-5291 Valve Gp-Control

09***22	Plug	2
10***60	Seal	1
15***92	Body-Valve	1
15***06	Spool-Valve	1

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203-0907 Valve Gp-Control

11***83	Spool-Valve	1
11***12	Kit-Seal	1
20***06	Body Group-Valve	1
20***07	Valve Group-Control	1

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203-0945 Valve Gp-Control

15***47	Spool-Valve	1
20***43	Body Group-Valve	1
20***45	Valve Group-Control	1
20***63	Plug	2

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203-1003 Valve Gp-Control

15***44	Spool-Valve	1
15***53	Kit-Seal	1
20***01	Body Group-Valve	1
20***03	Carrier, Valve Group-Control	1

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187-7722 Valve Gp-Control

15***47	Spool-Valve	1
18***22	Valve Group-Control	1
3Q***06	Body-Valve	1
3Q***15	Housing-Spring	1

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203-1016 Valve Gp-Control

10***60	Seal	1
15***06	Spool-Valve	1
15***15	Kit-Seal	1
20***15	Body Group-Valve	1

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Service Equipment And Supplies

159-5925 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5914 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5923 Film Gp

14***69	Film-Warning; (Alert)	2
14***70	Film-Warning; (Read Omm)	2
15***56	Film-Warning; (Stay Back 26-Ft)	2
15***57	Film-Warning; (Flying Debris, Hearing Protn)	2

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121-7510 Film Gp

10***55	Plate-Warning	2
12***10	Film Group	1
3Q***78	Film-Warning	2
3Q***79	Plate-Warning	2

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159-5926 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5916 Film Gp

14***69	Film-Warning; (Alert)	2
14***70	Film-Warning; (Read Omm)	2
15***56	Film-Warning; (Stay Back 26-Ft)	2
15***57	Film-Warning; (Flying Debris, Hearing Protn)	2

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121-9538 Film Gp

10***55	Plate-Warning	0
12***38	Film Group	1
13***42	Film; (63)	0
3Q***78	Film-Warning	0

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159-5912 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5915 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***57	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5911 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5924 Film Gp

14***69	Film-Warning; (Alert)	2
14***70	Film-Warning; (Read Omm)	2
15***56	Film-Warning; (Stay Back 26-Ft)	2
15***57	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5910 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5913 Film Gp

15***52	Film-Warning; (Stay Back)	2
15***53	Film-Information; (Read Omm)	2
15***54	Film-Warning; (Alert)(Safety Alert)	2
15***55	Film-Warning; (Flying Debris, Hearing Protn)	2

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159-5919 Film Gp

14***69	Film-Warning; (Alert)	2
14***70	Film-Warning; (Read Omm)	2
15***56	Film-Warning; (Stay Back 26-Ft)	2
15***57	Film-Warning; (Flying Debris, Hearing Protn)	2

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Work Tool Arrangement

213-9664chart-Hammer Ar -Small Hammers

21***64

Chart-Hammer Ar; -Small Hammers

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213-9665 Chart-Hammer Ar -Merchandising

21***65

Chart-Hammer Ar; -Merchandising

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130-3801 Hammer Ar-Hydraulic

13***94	Plate Group-Hammer	1
13***01	Hammer Ar-Hydraulic	1
15***16	Film Group	1
3Q***01	Hammer Group-Hydraulic	1

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131-0999 Hammer Ar-Hydraulic

12***59	Hammer Group-Hydraulic	1
13***99	Hammer Ar-Hydraulic	1
13***14	Plate Group-Hammer	1
15***25	Film Group	1

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161-3502 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
15***43	Hammer Ar-Hydraulic	1
16***02	Hammer Ar-Hydraulic	1

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154-2902 Hammer Ar-Hydraulic

15***62	Hammer Group-Hydraulic	1
15***63	Plate Group-Hammer	1
15***02	Hammer Ar-Hydraulic	1
15***11	Film Group	1

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159-1611 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
15***43	Hammer Ar-Hydraulic	1
15***11	Hammer Ar-Hydraulic	1

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191-9802 Hammer Ar-Hydraulic

15***16	Film Group	1
19***01	Plate Group-Hammer	1
19***02	Hammer Ar-Hydraulic	1
3Q***01	Hammer Group-Hydraulic	1

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203-0933 Hammer Ar-Hydraulic

15***23	Film Group	1
19***06	Plate Group-Hammer	1
20***29	Hammer Group-Hydraulic	1
20***33	Hammer Ar-Hydraulic	1

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203-1047 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
20***46	Block, Hammer Ar-Hydraulic	1
20***47	Hammer Ar-Hydraulic, Block	1

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112-4842 Hammer Ar-Hydraulic

11***42	Hammer Ar-Hydraulic	1
12***47	Hammer Ar-Hydraulic	1
12***15	Tool Group; (For European Use Only)	1

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203-0947 Hammer Ar-Hydraulic

10***21	Plate Group-Hammer	1
15***16	Film Group	1
20***46	Hammer Group-Hydraulic	1
20***47	Cover, Hammer Ar-Hydraulic	1

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105-4336 Hammer Ar-Hydraulic

10***36	Hammer Ar-Hydraulic	1
10***21	Plate Group-Hammer	1
15***16	Film Group	1
3Q***01	Hammer Group-Hydraulic	1

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124-9640 Hammer Ar-Hydraulic

12***40	Hammer Ar-Hydraulic	1
12***41	Hammer Ar-Hydraulic	1
12***12	Tool Group; (For European Use Only)	1

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154-2903 Hammer Ar-Hydraulic

15***16	Plate Group-Hammer	1
15***28	Hammer Group-Hydraulic	1
15***03	Hammer Ar-Hydraulic	1
15***13	Film Group	1

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203-0925 Hammer Ar-Hydraulic

12***15	Tool Group; (For European Use Only)	1
20***24	Hammer Ar-Hydraulic	1
20***25	Hammer Ar-Hydraulic	1

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161-3501 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
15***25	Hammer Ar-Hydraulic	1
16***01	Hammer Ar-Hydraulic	1

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138-1137 Hammer Ar-Hydraulic

12***59	Hammer Group-Hydraulic	1
13***37	Hammer Ar-Hydraulic	1
13***38	Plate Group-Hammer	1
15***26	Film Group	1

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150-8825 Hammer Ar-Hydraulic

15***25	Hammer Ar-Hydraulic	1
15***40	Hammer Group-Hydraulic	1
15***41	Plate Group-Hammer	1
15***23	Film Group	1

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153-9929 Hammer Ar-Hydraulic

15***29	Hammer Ar-Hydraulic	1
15***40	Plate Group-Hammer	1
15***14	Film Group	1
7Q***13	Hammer Group-Hydraulic	1

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130-3802 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
13***01	Hammer Ar-Hydraulic	1
13***02	Hammer Ar-Hydraulic	1

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171-1374 Hammer Ar-Hydraulic

15***16	Film Group	1
17***74	Hammer Ar-Hydraulic	1
17***75	Plate Group-Hammer	1
3Q***01	Hammer Group-Hydraulic	1

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191-9803 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
19***02	Hammer Ar-Hydraulic	1
19***03	Hammer Ar-Hydraulic	1

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203-1006 Hammer Ar-Hydraulic

15***16	Plate Group-Hammer	1
15***13	Film Group	1
20***04	Hammer Group-Hydraulic	1
20***06	Hammer Ar-Hydraulic	1

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161-3499 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
15***27	Hammer Ar-Hydraulic	1
16***99	Hammer Ar-Hydraulic	1

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158-4541 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
15***27	Hammer Ar-Hydraulic	1
15***41	Hammer Ar-Hydraulic	1

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203-0913 Hammer Ar-Hydraulic

13***14	Plate Group-Hammer	1
15***25	Film Group	1
20***09	Hammer Group-Hydraulic	1
20***13	Hammer Ar-Hydraulic	1

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203-0948 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***47	Cover, Hammer Ar-Hydraulic	1
20***48	Hammer Ar-Hydraulic, Cover	1

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109-0730 Hammer Ar-Hydraulic

10***36	Hammer Ar-Hydraulic	1
10***30	Hammer Ar-Hydraulic	1
12***12	Tool Group; (For European Use Only)	1

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161-3498 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
15***02	Hammer Ar-Hydraulic	1
16***98	Hammer Ar-Hydraulic	1

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203-1021 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***21	Hammer Ar-Hydraulic	1
20***26	Hammer Ar-Hydraulic	1

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124-4707 Hammer Ar-Hydraulic

12***59	Hammer Group-Hydraulic	1
12***06	Plate Group-Hammer	1
12***07	Hammer Ar-Hydraulic	1
15***25	Film Group	1

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127-5546 Hammer Ar-Hydraulic

12***38	Film Group	1
12***46	Hammer Ar-Hydraulic	1
3D***24	O-Ring - For Oil Drain & Level Plug (Items 3 & 7)	2
5K***90	Seal-To Hydraulic Cooler Inlet Port	2

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203-0995 Hammer Ar-Hydraulic

15***40	Plate Group-Hammer	1
15***14	Film Group	1
20***94	Hammer Group-Hydraulic	1
20***95	Hammer Ar-Hydraulic	1

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194-6507 Hammer Ar-Hydraulic

15***40	Hammer Group-Hydraulic	1
15***23	Film Group	1
19***06	Plate Group-Hammer	1
19***07	Hammer Ar-Hydraulic	1

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203-0975 Hammer Ar-Hydraulic

15***44	Plate Group-Hammer	1
15***19	Film Group	1
20***46	Hammer Group-Hydraulic	1
20***75	Hammer Ar-Hydraulic	1

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124-9641 Hammer Ar-Hydraulic

12***41	Hammer Ar-Hydraulic	1
12***42	Plate Group-Hammer	1
15***19	Film Group	1
3Q***01	Hammer Group-Hydraulic	1

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153-9927 Hammer Ar-Hydraulic

15***27	Hammer Ar-Hydraulic	1
15***42	Plate Group-Hammer	1
15***15	Film Group	1
7Q***13	Hammer Group-Hydraulic	1

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203-0931 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
20***30	Hammer Ar-Hydraulic	1
20***31	Hammer Ar-Hydraulic	1

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203-0924 Hammer Ar-Hydraulic

13***38	Plate Group-Hammer	1
15***26	Film Group	1
20***09	Hammer Group-Hydraulic	1
20***24	Hammer Ar-Hydraulic	1

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161-3500 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
15***03	Hammer Ar-Hydraulic	1
16***00	Hammer Ar-Hydraulic	1

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203-1026 Hammer Ar-Hydraulic

15***63	Plate Group-Hammer	1
15***11	Film Group	1
20***18	Hammer Group-Hydraulic	1
20***26	Hammer Ar-Hydraulic	1

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203-0950 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***49	Hammer Ar-Hydraulic	1
20***50	Hammer Ar-Hydraulic	1

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203-1046 Hammer Ar-Hydraulic

15***42	Plate Group-Hammer	1
15***23	Film Group	1
20***29	Hammer Group-Hydraulic	1
20***46	Block, Hammer Ar-Hydraulic	1

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203-0910 Hammer Ar-Hydraulic

12***06	Plate Group-Hammer	1
15***25	Film Group	1
20***09	Hammer Group-Hydraulic	1
20***10	Hammer Ar-Hydraulic	1

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203-0949 Hammer Ar-Hydraulic

15***16	Film Group	1
19***01	Plate Group-Hammer	1
20***46	Hammer Group-Hydraulic	1
20***49	Hammer Ar-Hydraulic	1

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203-1000 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***00	Hammer Ar-Hydraulic, .. Cyl.	1
20***06	Hammer Ar-Hydraulic	1

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194-6508 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
19***07	Hammer Ar-Hydraulic	1
19***08	Hammer Ar-Hydraulic	1

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203-0930 Hammer Ar-Hydraulic

15***41	Plate Group-Hammer	1
15***23	Film Group	1
20***29	Hammer Group-Hydraulic	1
20***30	Hammer Ar-Hydraulic	1

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203-0915 Hammer Ar-Hydraulic

12***15	Tool Group; (For European Use Only)	1
20***13	Hammer Ar-Hydraulic	1
20***15	Hammer Ar-Hydraulic	1

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203-0972 Hammer Ar-Hydraulic

15***16	Film Group	1
17***75	Plate Group-Hammer	1
20***46	Hammer Group-Hydraulic	1
20***72	Hammer Ar-Hydraulic	1

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203-1020 Hammer Ar-Hydraulic

15***65	Plate Group-Hammer	1
15***10	Film Group	1
20***18	Hammer Group-Hydraulic	1
20***20	Hammer Ar-Hydraulic	1

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138-1136 Hammer Ar-Hydraulic

12***15	Tool Group; (For European Use Only)	1
13***36	Hammer Ar-Hydraulic	1
13***37	Hammer Ar-Hydraulic	1

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203-0951 Hammer Ar-Hydraulic

13***94	Plate Group-Hammer	1
15***16	Film Group	1
20***46	Hammer Group-Hydraulic	1
20***51	Hammer Ar-Hydraulic	1

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120-5947 Hammer Ar-Hydraulic

11***43	Plate Group-Hammer	1
12***47	Hammer Ar-Hydraulic	1
12***59	Hammer Group-Hydraulic	1

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203-0911 Hammer Ar-Hydraulic

12***15	Tool Group; (For European Use Only)	1
20***10	Hammer Ar-Hydraulic	1
20***11	Hammer Ar-Hydraulic	1

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203-0979 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***79	Hammer Ar-Hydraulic	1
20***95	Hammer Ar-Hydraulic	1

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203-0986 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***86	Hammer Ar-Hydraulic	1
20***97	.. Axle, Hammer Ar-Hydraulic, Axle; (Sub For At201657), . Axle	1

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203-0942 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
20***41	Hammer Ar-Hydraulic	1
20***42	Hammer Ar-Hydraulic	1

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112-8203 Hammer Ar-Hydraulic

11***03	Hammer Ar-Hydraulic	1
12***38	Film Group	1
12***39	Plate Group-Hammer	1
7Q***13	Hammer Group-Hydraulic	1

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124-4708 Hammer Ar-Hydraulic

12***07	Hammer Ar-Hydraulic	1
12***08	Hammer Ar-Hydraulic	1
12***15	Tool Group; (For European Use Only)	1

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171-1373 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
17***73	Hammer Ar-Hydraulic	1
17***74	Hammer Ar-Hydraulic	1

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203-0952 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***51	Hammer Ar-Hydraulic	1
20***52	Hammer Ar-Hydraulic	1

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158-4538 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
15***29	Hammer Ar-Hydraulic	1
15***38	Hammer Ar-Hydraulic	1

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203-0934 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
20***33	Hammer Ar-Hydraulic	1
20***34	Hammer Ar-Hydraulic	1

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131-1000 Hammer Ar-Hydraulic

12***15	Tool Group; (For European Use Only)	1
13***99	Hammer Ar-Hydraulic	1
13***00	Hammer Ar-Hydraulic	1

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118-5577 Hammer Ar-Hydraulic

11***77	Hammer Ar-Hydraulic	1
12***10	Film Group	1
12***16	Plate Group-Hammer	1
14***05	Adapter As	2

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203-0974 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***72	Hammer Ar-Hydraulic	1
20***74	Hammer Ar-Hydraulic	1

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203-1009 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***09	Hammer Ar-Hydraulic	1
20***20	Hammer Ar-Hydraulic	1

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157-2655 Hammer Ar-Hydraulic

15***08	Plate Group-Hammer	1
15***40	Hammer Group-Hydraulic	1
15***55	Hammer Ar-Hydraulic	1
15***24	Film Group	1

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161-3503 Hammer Ar-Hydraulic

12***14	Tool Group; (European Source Only)	1
15***55	Hammer Ar-Hydraulic	1
16***03	Hammer Ar-Hydraulic	1

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203-0997 Hammer Ar-Hydraulic

15***42	Plate Group-Hammer	1
15***15	Film Group	1
20***94	Hammer Group-Hydraulic	1
20***97	.. Axle, Hammer Ar-Hydraulic, Axle; (Sub For At201657), . Axle	1

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203-0941 Hammer Ar-Hydraulic

15***08	Plate Group-Hammer	1
15***24	Film Group	1
20***29	Hammer Group-Hydraulic	1
20***41	Hammer Ar-Hydraulic	1

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152-2527 Hammer Ar-Hydraulic

15***24	Plate Group-Hammer	1
15***27	Hammer Ar-Hydraulic	1
15***28	Hammer Group-Hydraulic	1
15***12	Film Group	1

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203-1005 Hammer Ar-Hydraulic

15***24	Plate Group-Hammer	1
15***12	Film Group	1
20***04	Hammer Group-Hydraulic	1
20***05	Hammer Ar-Hydraulic	1

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157-2243 Hammer Ar-Hydraulic

15***40	Hammer Group-Hydraulic	1
15***42	Plate Group-Hammer	1
15***43	Hammer Ar-Hydraulic	1
15***23	Film Group	1

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158-4543 Hammer Ar-Hydraulic

15***43	Hammer Ar-Hydraulic	1
15***44	Plate Group-Hammer	1
15***19	Film Group	1
3Q***01	Hammer Group-Hydraulic	1

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203-0999 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***99	Hammer Ar-Hydraulic	1
20***05	Hammer Ar-Hydraulic	1

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203-0976 Hammer Ar-Hydraulic

12***12	Tool Group; (For European Use Only)	1
20***75	Hammer Ar-Hydraulic	1
20***76	Hammer Ar-Hydraulic	1

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Work Tools

280-9827 Bracket Gp-Mounting

28***27	Bracket Group-Mounting	1
28***28	Bracket As	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16
8T***31	Nut; (M20x2.5-Thd)	8

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226-2797 Bracket Gp-Mounting

22***97	Bracket Group-Mounting	1
22***96	Bracket As	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16
8T***31	Nut; (M20x2.5-Thd)	8

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215-6525 Bracket Gp-Mounting

21***24	Bracket As	1
21***25	Bracket Group-Mounting	1
21***25	Shim; (0.5-mm Thk)	6
21***26	Shim; (0.1-mm Thk)	6

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230-9508 Bracket Gp-Mounting

23***08	Bracket Group-Mounting	1
26***35	Bracket As	1
8T***93	Bolt-Plt; (M16 X 2.0 X 50)	12
9X***57	Washer-Pipe As To Main Pump Suction Port	12

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305-0511 Bracket Gp-Mounting

30***11	Bracket Group-Mounting	1
30***12	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	12
7X***64	Bolt; (M20x2.5x90-mm)	8

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230-9504 Bracket Gp-Mounting

23***04	Bracket Group-Mounting	1
26***38	Bracket As	1
8T***31	Nut; (M20x2.5-Thd)	4
8T***87	Bolt; (M20x2.5x80-mm)	4

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222-4850 Bracket Gp-Mounting

22***50	Bracket Group-Mounting	1
22***66	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	12
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16

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230-9505 Bracket Gp-Mounting

23***05	Bracket Group-Mounting	1
26***37	Bracket As	1
8T***39	Washer; (6.0mm Thk)(M21.5x6x45mm)	4
8T***30	Capscrew; (Use 12-16) (Hex Hd) (M20x2.5x50) (Gd 10.9 Z)	4

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222-7794 Bracket Gp-Mounting

22***94	Bracket Group-Mounting	1
22***98	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	8
8T***32	Nut (M16 X 2 Thd); (M16x2.00 Thd)	8

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280-9885 Bracket Gp-Mounting

28***85	Bracket Group-Mounting	1
28***86	Bracket As-Mounting	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16
8T***31	Nut; (M20x2.5-Thd)	8

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3q-7608 Bracket Gp-Mounting

16***56	Bracket As	1
3Q***08	Bracket Group-Mounting	1
7X***54	Bolt; (M16x2x70-mm)	12
7X***64	Bolt; (M20x2.5x90-mm)	8

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290-0333 Bracket Gp-Mounting

29***33	Bracket Group-Mounting	1
29***34	Bracket As	1
29***18	Rivet	4
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	8

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179-9859 Bracket Gp-Mounting

17***59	Bracket Group-Mounting	1
17***72	Bracket As	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16
8T***31	Nut; (M20x2.5-Thd)	8

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305-4984 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
30***84	Bracket Group-Mounting	1
30***85	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	12

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300-5047 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
30***47	Bracket Group-Mounting	1
30***48	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	12

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230-9503 Bracket Gp-Mounting

23***03	Bracket Group-Mounting	1
26***39	Bracket As	1
8T***39	Washer; (6.0mm Thk)(M21.5x6x45mm)	4
8T***30	Capscrew; (Use 12-16) (Hex Hd) (M20x2.5x50) (Gd 10.9 Z)	4

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155-4468 Bracket Gp-Mounting

15***68	Bracket Group-Mounting	1
15***77	Bracket As	1
8T***31	Nut; (M20x2.5-Thd)	4
8T***87	Bolt; (M20x2.5x80-mm)	4

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191-0991 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
19***91	Bracket Group-Mounting	1
20***54	Bracket As	1
6V***76	Nut-Lock; (M24 X 3.0)	10

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230-9507 Bracket Gp-Mounting

23***07	Bracket Group-Mounting	1
26***36	Bracket As	1
8T***39	Washer; (6.0mm Thk)(M21.5x6x45mm)	4
8T***30	Capscrew; (Use 12-16) (Hex Hd) (M20x2.5x50) (Gd 10.9 Z)	4

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215-6527 Bracket Gp-Mounting

21***26	Bracket As	1
21***27	Bracket Group-Mounting	1
21***65	Shim	6
21***66	Shim	8

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333-0098 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
33***98	Bracket Group-Mounting	1
33***99	Bracket As	1
6V***76	Nut-Lock; (M24 X 3.0)	10

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294-7877 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
29***77	Bracket Group-Mounting	1
29***78	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	12

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204-3379 Bracket Gp-Mounting

09***96	Bolt; (M20x2.5-Thd)	4
20***79	Bracket Group-Mounting	1
20***13	Bracket As	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	2

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219-0667 Bracket Gp-Mounting

21***67	Bracket Group-Mounting	1
21***68	Bracket As	1
7X***54	Bolt; (M16x2x70-mm)	12
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16

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209-3306 Bracket Gp-Mounting

20***05	Bracket As	1
20***06	Bracket Group-Mounting	1
7X***54	Bolt; (M16x2x70-mm)	12
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	16

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318-2265 Bracket Gp-Mounting

31***64	Bracket As	1
31***65	Bracket Group-Mounting	1
7X***54	Bolt; (M16x2x70-mm)	12
7X***64	Bolt; (M20x2.5x90-mm)	8

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308-7541 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
30***41	Bracket Group-Mounting	1
30***42	Bracket As	1
7X***64	Bolt; (M20x2.5x90-mm)	8

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294-7874 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
29***74	Bracket Group-Mounting	1
29***76	Bracket As	1
6V***76	Nut-Lock; (M24 X 3.0)	8

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189-2982 Chart-Hammer Tool

15***94	Tool-Chisel	1
15***95	Tool-Moil Point	1
15***98	Tool-Compacting Plate	1
15***59	Shaft	1

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189-2983 Chart-Hammer Tool

15***89	Tool-Chisel	1
15***90	Tool-Moil Point	1
15***93	Tool-Compacting Plate	1
18***83	Chart-Hammer Tool	1

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189-2978 Chart-Hammer Tool

10***35	Tool-Moil Point	1
10***36	Tool-Chisel	1
12***56	Tool-Blunt	1
12***91	Tool-Long Chisel	1

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189-2979 Chart-Hammer Tool

15***26	Tool-Moil Point	1
15***27	Tool-Chisel	1
18***03	Tool-Long Chisel	1
18***05	Tool-Long Moil Point	1

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189-2981 Chart-Hammer Tool

12***30	Tool-Compacting Plate	1
12***94	Tool-Long Chisel	1
12***98	Tool-Long Moil Point	1
15***61	Shaft	1

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189-2980 Chart-Hammer Tool

12***44	Tool-Long Chisel	1
12***46	Tool-Moil Point	1
15***16	Shaft	1
18***80	Chart-Hammer Tool	1

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190-1444 Chart-Mounting Bracket

12***43	Bracket Group-Mounting	1
12***44	Bracket As	1
12***45	Bracket Group-Mounting	1
12***46	Bracket As	1

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191-4885 Chart-Mounting Bracket

09***85	Locknut; (M16x2-Thd)	12
10***43	Adjuster Group-Bucket	1
10***57	Adjuster Group-Bucket; (Bucket)	1
12***38	Mounting Group-Hammer; -Custom	1

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157-2240 Hammer Gp-Hydraulic

11***82	Plate	1
15***28	Kit-Seal	1
15***29	Bushing As	1
15***14	Cylinder	1

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203-0946 Hammer Gp-Hydraulic

11***22	Seal	1
20***22	Head Group-Front	1
20***45	Valve Group-Control	1
20***46	Hammer Group-Hydraulic	1

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203-1004 Hammer Gp-Hydraulic

09***73	Bolt; (Socket Head) (M12x1.75x60mm)	4
09***05	Bolt-Socket Head; (M16x2x100-mm)	8
10***60	Washer	4
10***43	Nut-Tie Rod	4

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203-1018 Hammer Gp-Hydraulic

10***46	Plug	2
14***14	Seal-U-Cup	1
15***90	Seal-Wiper	1
15***91	Seal	1

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3q-7301 Hammer Gp-Hydraulic

11***22	Seal	1
3E***05	Washer; (31x56x0.5-mm Thk)	4
3E***24	Lockwasher	56
3E***02	Seal-O-Ring; (104.5mm Id)	2

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7q-8913 Hammer Gp-Hydraulic

09***05	Bolt-Socket Head; (M16x2x100-mm)	8
09***06	Bolt-Socket Head; (M16x2x80-mm)	8
10***60	Washer	4
10***34	Cylinder	1

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152-0962 Hammer Gp-Hydraulic

10***46	Plug	2
14***14	Seal-U-Cup	1
15***62	Hammer Group-Hydraulic	1
15***90	Seal-Wiper	1

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120-7259 Hammer Gp-Hydraulic

10***46	Plug	1
11***56	Body-Valve	1
11***57	Cylinder	1
11***58	Piston	1

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203-0994 Hammer Gp-Hydraulic

09***05	Bolt-Socket Head; (M16x2x100-mm)	8
09***06	Bolt-Socket Head; (M16x2x80-mm)	4
10***60	Washer	4
10***34	Cylinder	1

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203-0909 Hammer Gp-Hydraulic

11***57	Cylinder	1
11***58	Piston	1
11***60	Bushing	1
11***62	Pin-Tool Retainer	2

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152-2528 Hammer Gp-Hydraulic

09***73	Bolt; (Socket Head) (M12x1.75x60mm)	4
09***05	Bolt-Socket Head; (M16x2x100-mm)	8
10***60	Washer	4
10***43	Nut-Tie Rod	4

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203-0929 Hammer Gp-Hydraulic

11***82	Plate	1
15***28	Kit-Seal	1
15***29	Bushing As	1
15***14	Cylinder	1

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H63 serial number reference

The H63 nameplate is a small riveted or bolted ID plate mounted on the top back head/cylinder housing near the nitrogen charging valve; on the sound-suppressed H63S the plate sits on the outer silencer shroud instead. The PIN reads as a 3-letter prefix followed by a sequential unit number (for example 4GL00122); the letter group ties the tool to its parts-manual production block, and the trailing digits pin down whether the unit falls before or after a running design change, which matters for ordering the correct wear and seal parts.

Prefix	Identifies	Notes
4GL	H63 (non-silenced); PIN family shared with H63S sound-suppressed variant	Covers the H63 hydraulic hammer's production block. Some units in this run carry a revised flat-top housing (also sold as the H63FT variant); the exact serial point where the housing design changes should be confirmed against the parts book for a specific unit before ordering housing components.

Frequently asked questions

How much does the Caterpillar H63 weigh?

The H63 has an operating weight of about 300 kg (660 lb), including the standard tool and an average mounting bracket. The sound-suppressed H63s variant runs slightly heavier at about 315 kg (695 lb) due to its noise-dampened housing.

What replaced the Caterpillar H63?

Caterpillar's own hammer literature names the H65D as the direct successor to the H63/H63s, built around a redesigned single-piece power cell that replaces the H63's older bolted multi-piece body and removes the need for tie rods. Beyond that direct swap, Caterpillar's broader H-series line was eventually superseded across the range by later D-series and Es-series hammer generations.

What carrier class does the H63 fit?

The H63 is sized for carriers in the roughly 3,000-6,500 kg operating weight class, typically mini to small excavators, backhoes, and comparable machines able to supply 20-100 L/min of auxiliary hydraulic flow at about 13,000-14,000 kPa. Carrier weight determines mounting bracket compatibility as well as hydraulic sizing, so bracket fitment should be confirmed against the specific carrier model.

What H63 owners discuss

What actually causes an H63 to lose hitting power over time?

Weak-hammer complaints on this size of tool almost always trace to one of three things: nitrogen precharge bleeding down in the accumulator, the carrier not actually delivering full flow and pressure to the hammer, or a worn tool bushing bleeding energy off sideways instead of down the bit. A hammer running low on nitrogen tends to hit fast and light instead of hard - it cycles quicker but each blow carries less punch because the accumulator can't return enough stored energy between strikes. Before condemning the hammer, confirm the carrier's auxiliary circuit is really reaching what this tool needs (roughly 20-100 l/min / 5-26 gpm, around 13,000 kPa / 1,885 psi) - a plugged return filter or a carrier relief valve set low looks identical to a tired hammer from the seat. Have your dealer verify accumulator charge and carrier relief settings before any teardown.

How often should the nitrogen accumulator be checked, and what tells you the diaphragm has actually failed?

Check precharge roughly every three to six months, tightening to about every three months under heavy quarry or demolition duty, and recheck a freshly serviced unit after roughly a week and again around three months in. Once the charge is down more than about 10% from spec it's worth topping up rather than waiting for it to get worse. The sign the diaphragm itself has torn, rather than the gas just slowly seeping past a valve, is a hammer that goes weak all at once and stays weak immediately after a recharge attempt - the membrane won't hold pressure anymore. Because this means working with a pressurized gas bottle and the right valve/gauge setup, have your dealer verify and recharge it rather than improvising.

What's the number one way owners end up damaging this hammer themselves?

Blank firing - letting the piston keep cycling with no material under the tool - is the most common self-inflicted damage on this class of hammer. Every blow that isn't absorbed by rock or concrete slams straight into the internal stops instead, and that stacks up fast on the bushings and piston. The other habit that keeps coming up is greasing with the tool hanging free instead of pressed against material: grease pools between tool and piston and then gets hydraulically forced up past the piston seals on the next stroke, cutting seal life short. Storage position matters too - leaving a hammer standing point-up lets rainwater run down and pool on top of the piston; stored point-down or laid close to horizontal, it sheds water instead.

What wears fastest on an H63 and how do you stay ahead of it?

The tool bit and the lower tool bushing take the brunt of it, same as on any hammer in this class. Standard practice is to grease until you actually see grease working its way out between tool and bushing, checking every couple of working hours rather than trusting a fixed calendar interval, and greasing more often on a rental unit or one that's changing hands frequently. If the tool looks shiny or polished right where it rides in the front head, that's the cue it's overdue for grease. Measure bit and bushing diameters against wear-limit dimensions periodically instead of waiting for felt play - by the time you can feel slop in the tool, the bushing bore is often already past saving too.

What actually changes between the H63 and the H63s?

Same power cell, same certified impact energy, same recommended carrier weight class - the s adds a sound-suppression/isolation housing around that power cell for quieter operation, which matters on tight urban demolition or indoor work where noise limits are enforced. Internally it's the same piston, accumulator and bushings to service either way; the extra isolation layer is also part of why this hammer transmits comparatively little shock back into the carrier next to simpler two-piece-housing designs from other brands.

Does matching carrier weight to the H63 actually matter, or is it just a spec-sheet number?

It's treated as real, not decorative. The H63 is built around carriers in roughly the 3,000-6,500 kg (6,600-14,300 lb) class - minis, skid steers, backhoes. Go too light and the carrier can't hold the tool down against recoil, so it bounces, penetration suffers, and wear accelerates everywhere; some owners running one on a lighter mini added counterweight or stick weight just to keep the tool planted. Go too heavy on flow/pressure and you risk feeding the hammer more than its internal pressure-adjusting valve is built to regulate down - that doesn't hit harder, it just turns into heat and relief bypass and shortens seal life.

What should I check before buying a used H63?

Start with the tie rods and side bolts - they're what clamp the backhead, cylinder and front head together, and a loose or previously broken one lets the power cell shift and 'jump' inside its outer housing, which shows up as leaks and wear that look worse than they are once properly retorqued. Function-test it under real load rather than just cycling it empty, then pull the tool and covers to measure the tool and lower bushing diameters against wear limits, and check whether the accumulator holds pressure or goes weak within a few minutes of use. Look at the bit itself for mushrooming or cracking around the retaining-pin notch. Some oil weeping around the bushing is normal lubrication working its way out and not automatically a seal failure, but have your dealer verify accumulator charge and internal wear tolerances with the covers off before settling on a price.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

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