Caterpillarwork toolhammer
Caterpillar H120CS
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar H120C S is a hydraulic hammer (breaker) work tool, not a self-propelled machine. It mounts on the stick of a hydraulic excavator in the 17,000-26,000 kg (37,400-57,200 lb) operating class, with some later configurations extending to roughly 27,000 kg (59,500 lb). Working weight of the tool itself is 1,300 kg (2,860 lb), and it delivers an impact energy class of 4,067 J (3,000 ft-lbf) at 350-620 blows per minute on 100-170 L/min (26-45 gpm) of carrier hydraulic flow. The unit dates to the mid-2000s era of Caterpillar's D-series excavator lineup and uses a sealed, sound-suppressed housing that shields the power cell from dust and cuts jobsite noise.
The 'C S' designation sits inside Caterpillar's broader 120-class hammer family alongside the plain 120 and H120S models, all sharing the same serial prefix and matched carrier class. Its sealed, sound-suppressed housing sets it apart from lighter-duty siblings and points to duty on noise-restricted or enclosed jobsites. Caterpillar has since carried the 120-class forward with the H120 S Performance Hammer and H120E S lines, which use a different, larger tool diameter and an updated housing design, so the H120C S is now a superseded model rather than a current catalog offering. It remains common in the used and rental fleet, and Cat's hammer parts catalogs continue to carry bushings, seals, and wear parts for it, which keeps it serviceable long after leaving the new-equipment lineup.
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 H120CS specifications
Weights
| Working (operating) weight | 1,300 kg (2,860 lb). Figure includes hammer, standard tool, and average mounting bracket; sound-suppressed housing runs slightly heavier than a bare pin-on unit. |
Dimensions
| Overall length (housing / side plate) | 1,783 mm (70.1 in) |
| Frontal width | 585 mm (23.0 in) |
| Lateral width | 540 mm (21.3 in) |
| Tool / moil diameter | 115 mm (4.5 in) |
| Typical tool length | 357 mm (14.1 in); actual length varies by tool type (moil, chisel, blunt) |
Performance
| Impact (blow) frequency | 350-620 bpm |
| Impact energy class | 4,067 J (3,000 ft-lbf) |
| Carrier weight class | 17,000-26,000 kg (37,400-57,200 lb) tracked excavator class; some dealer references list a maximum carrier weight up to about 27,000 kg (59,500 lb) for later configurations |
| Required hydraulic flow | 100-170 L/min (26-45 gpm) |
| Operating pressure | approximately 14,000 kPa (2,030 psi) at rated flow and normal back pressure; some dealer parts references list an operating range up to about 15,000 kPa (2,176 psi) - varies by configuration/series |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
H120CS fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Hammer tool/bushing grease points | Grease every 2 hours of operation per the lubrication decal on the tool (some maintenance guides for this hammer family cite up to 4 hours or a twice-daily minimum) — apply roughly 10 to 15 strokes from a grease gun per point until a slight purge shows at the bushing. Units fitted with the optional automatic lubrication cartridge should show a continuous collar of grease around the tool shank between cartridge changes; follow the OMM interval for cartridge replacement. | Cat Hydraulic Hammer Paste — copper/graphite-based paste for hammer tool and bushing wear points, rated for the high heat generated at the tool/bushing interface. No engine oil, coolant, fuel, or transmission/final-drive fluids apply; this tool has none of those systems. |
| Carrier hydraulic oil compatibility | No onboard reservoir — the hammer runs off the host excavator's hydraulic circuit; the nitrogen-charged gas accumulator is a sealed pressure cushion, not a serviceable fluid. Confirm carrier oil condition/cleanliness meets the carrier OMM's requirement before running the hammer. | Use the hydraulic oil specified in the carrier excavator's own OMM (Cat HYDO Advanced or equivalent TDTO/HYDO grade for that carrier). Per Cat machine fluids guidance, machines fitted with a hydraulic hammer should avoid SAE 0W and SAE 5W viscosity-grade hydraulic oils. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar H120CS maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 4 h |
|
| Every 10 h |
|
| Every 250 h |
|
Servicing the H120CS beyond the schedule
Predictive Maintenance & Fluid Analysis
Predictive care on the H120C S centers on the carrier's hydraulic system, since the tool carries no engine or fluid reservoir of its own. Sample and trend the carrier's hydraulic oil for contamination and moisture; hammer duty stresses oil cleanliness more than digging does. Log bushing play and grease use over time to catch wear trending toward the OMM limit before it causes tool retention failure. Watch for a slowing or erratic blow rate, which usually points to falling carrier flow or a weakening accumulator charge.
Corrective & Common Repairs
Most H120C S repairs trace back to the tool and bushing interface. Excess bushing play from skipped greasing lets the moil hammer against the retaining pin, chipping pin bosses and loosening pin bolts. A worn lower bushing lets the tool wobble and accelerates seal wear at the power cell. Nitrogen loss at the accumulator shows up as reduced blow energy and harder recoil through the carrier stick. Fix these by replacing bushings and pins as a set, recharging the accumulator, and matching carrier flow and pressure to the hammer's range.
Overhaul & Rebuild Points
A full H120C S rebuild centers on the power cell: piston, seal carrier, and wear plates take the repeated impact load and eventually score or leak. Rebuild triggers include oil weeping past the seal carrier, a hollow or inconsistent blow sound, or bushing wear beyond replacement limits on both bores. Inspect side bolts and through-bolts for stretch during teardown and replace worn fasteners rather than reusing them. Since this is a sealed, sound-suppressed housing, refit the dust seal and shield correctly to keep debris out of the rebuilt power cell.
Seasonal & Environment Servicing
Cold-weather operation calls for verifying the carrier's hydraulic oil viscosity grade suits hammer duty; oils that are too light under cold starts accelerate wear at the power cell and bushings. In freezing conditions, warm the hydraulic oil before heavy breaker work and check the accumulator charge more often, since nitrogen precharge drifts with ambient temperature. In dusty environments, grease more frequently than the standard interval and inspect the dust seal for cracking. Wash debris from the bushing collars and mounting bracket regularly to keep wear surfaces visible during shift checks.
H120CS attachments & work tools
Carrier excavator weight-class fit
Recommended carrier weight for the H120C S runs about 17-26 t (37,500-57,300 lb), overlapping the Cat 315D-329D class (315D, 319D, 320D, 321D CR, 323D, 324D, 329D and the M315D/M316D/M318D/M322D wheeled variants). Working weight of the hammer itself (with standard tool and average bracket) is about 1,300 kg (2,870 lb). Some published ranges for this hammer size run slightly wider, to about 16-27 t (35,300-59,500 lb); treat the exact ceiling as varying by carrier brand and bracket configuration.
Mounting/bracket system
The H120C S mounts to the carrier stick with a side-mount bracket group sized to the boom pin spacing of its matched excavator class; bracket weight is included in the hammer's quoted working weight. Hydraulic hookup is single-action tool control on high-pressure lines, with a check valve isolating pressure spikes from the carrier circuit and a pressure control valve holding full blow energy across the carrier's flow range.
Tool/moil bit options
Standard tool profiles offered for the H120C S are chisel, moil, and blunt, with a pyramidal moil variant also listed; a soft-rock chisel option is offered at this hammer size for softer breaking applications. Tool choice is matched to task: moil and chisel profiles for trenching, road-bed breaking, and rock excavation; blunt for concrete demolition and boulder breaking.
Noise/dust-shield and guarding (S/CS configuration)
The H120C S is silenced as standard, meeting noise limits for residential and noise-sensitive job sites. The housing is a symmetrical, fully enclosed design with a sealed bottom and top covers that block material intrusion, and abrasion-resistant wear plates between the power cell and housing reduce operating noise while guiding the assembly. A field-replaceable dust seal keeps debris out of the power cell and lower bushing, and the housing foot uses a hard-wearing plate with an integrated rock claw and no exposed cross-bolts to resist abrasive wear.
All H120CS assemblies by section
Every catalogued assembly group for the Caterpillar H120CS. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Hydraulic System
209-7379 Accumulator Gp-Hydraulic
| 18***34 | Base | 1 |
| 18***43 | Diaphragm | 1 |
| 20***76 | Cover | 1 |
120-9966 Accumulator Gp-Hydraulic
| 12***66 | Accumulator Group-Hydraulic | 1 |
| 12***78 | Accumulator-Bottom | 1 |
| 12***79 | Cover-Accumulator | 1 |
187-8450 Accumulator Gp-Hydraulic
| 11***71 | Bottom | 1 |
| 15***10 | Kit-Seal | 1 |
| 18***50 | Accumulator Group-Hydraulic | 1 |
212-5693 Accumulator Gp-Hydraulic
| 12***37 | Pin | 2 |
| 12***41 | Bottom | 1 |
| 12***51 | Kit-Seal | 1 |
229-2963 Accumulator Gp-Hydraulic
| 20***77 | Plug | 1 |
| 22***63 | Accumulator Group-Hydraulic | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
120-7290 Accumulator Gp-Hydraulic
| 11***71 | Bottom | 1 |
| 11***72 | Cover | 1 |
| 12***90 | Accumulator Group-Hydraulic | 1 |
3q-7501 Accumulator Gp-Hydraulic
| 12***37 | Pin | 2 |
| 12***41 | Bottom | 1 |
| 12***42 | Accumulator | 1 |
3q-7352 Accumulator Gp-Hydraulic
| 18***43 | Diaphragm | 1 |
| 3Q***52 | Accumulator Group-Hydraulic | 1 |
| 3Q***14 | Bottom-Accumulator | 1 |
229-2927 Accumulator Gp-Hydraulic
| 12***78 | Accumulator-Bottom | 1 |
| 12***89 | Kit-Seal | 1 |
| 20***83 | Plug As | 1 |
120-9981 Accumulator Gp-Hydraulic
| 11***22 | Base | 1 |
| 11***23 | Cover | 1 |
| 12***81 | Accumulator Group-Hydraulic | 1 |
122-8394 Accumulator Gp-Hydraulic
| 11***23 | Cover | 1 |
| 12***27 | Kit-Seal | 1 |
| 12***94 | Accumulator Group-Hydraulic | 1 |
203-0889 Body Gp-Valve
| 11***69 | Plug-Tapered | 1 |
| 20***77 | Plug | 1 |
| 20***89 | Body Group-Valve | 1 |
203-0802 Body Gp-Valve
| 20***02 | Body Group-Valve | 1 |
| 20***77 | Plug | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
203-0901 Body Gp-Valve
| 13***31 | Lines Group-Connecting | 1 |
| 13***16 | Lines Group-Connecting | 1 |
| 14***79 | Lines Group-Connecting | 1 |
203-0878 Body Gp-Valve
| 20***77 | Plug | 1 |
| 20***78 | Body Group-Valve | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
311-1995 Chart-Connecting Lines
| 11***09 | Lines Group-Connecting | 1 |
| 11***10 | Lines Group-Hammer; -Custom | 1 |
| 12***02 | Lines Group-Connecting | 1 |
311-1997 Chart-Connecting Lines
| 09***33 | Seal-O-Ring; (Id=209.30mm) | 1 |
| 14***44 | Seal | 1 |
| 15***50 | Seal | 1 |
317-8517 Kit-Seal
| 11***07 | Hose As | 1 |
| 12***12 | Hose As | 1 |
| 14***98 | Grommet | 1 |
3q-7535 Kit-Seal
| 09***92 | Seal-O-Ring; (229.3mm Id) | 1 |
| 09***31 | Seal-O-Ring | 1 |
| 14***44 | Seal | 1 |
121-0227 Kit-Seal
| 09***31 | Seal-O-Ring | 1 |
| 11***90 | Seal; (90.0mm Id) | 2 |
| 11***54 | Seal; (100.0mm Id) | 1 |
3q-7953 Kit-Seal
| 09***31 | Seal-O-Ring | 1 |
| 11***90 | Seal; (90.0mm Id) | 2 |
| 11***54 | Seal; (100.0mm Id) | 1 |
3q-7938 Kit-Seal
| 14***45 | Seal | 1 |
| 31***90 | Seal As | 6 |
| 3E***00 | Seal-O-Ring | 1 |
187-0972 Kit-Seal
| 18***72 | Kit-Seal | 1 |
| 19***13 | Seal-O-Ring | 1 |
| 31***95 | Filter Group-Oil | 1 |
153-1110 Kit-Seal
| 09***33 | Seal-O-Ring; (Id=209.30mm) | 1 |
| 10***92 | Seal-O-Ring | 1 |
| 14***44 | Seal | 1 |
120-7351 Kit-Seal
| 09***92 | Seal-O-Ring; (229.3mm Id) | 2 |
| 09***33 | Seal-O-Ring; (Id=209.30mm) | 1 |
| 12***45 | Seal-O-Ring; (14.0mm Id) | 1 |
120-9989 Kit-Seal
| 11***10 | Seal | 2 |
| 11***11 | Seal | 1 |
| 11***12 | Seal | 1 |
117-0467 Kit-Seal
| 09***83 | Seal-O-Ring (Id=174.00mm) | 1 |
| 11***67 | Kit-Seal | 1 |
| 12***31 | Shim, .025" Thk. | 2 |
125-0033 Lines Gp-Connecting
| 12***33 | Lines Group-Connecting | 1 |
| 14***99 | Grommet | 1 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 4 |
157-8809 Lines Gp-Connecting
| 14***98 | Grommet | 2 |
| 15***09 | Lines Group-Connecting | 1 |
| 1P***03 | Seal - Rectangular (31.86mm Id) | 2 |
197-4102 Lines Gp-Connecting
| 19***02 | Lines Group-Connecting | 1 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 4 |
| 1P***67 | Flange-Half (43.31 mm Id) | 8 |
123-4802 Lines Gp-Connecting
| 12***02 | Lines Group-Connecting | 1 |
| 12***13 | Hose As | 2 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 4 |
130-8607 Lines Gp-Connecting
| 13***06 | Hose As | 2 |
| 13***07 | Lines Group-Connecting | 1 |
| 14***98 | Grommet | 2 |
143-4073 Lines Gp-Connecting
| 13***43 | Valve Group-Manual; (Auxiliary Hydraulic Lines) | 2 |
| 14***73 | Lines Group-Connecting | 1 |
| 1P***03 | Seal - Rectangular (31.86mm Id) | 2 |
130-8266 Lines Gp-Connecting
| 13***66 | Lines Group-Connecting | 1 |
| 13***97 | Hose As | 2 |
| 14***99 | Grommet | 2 |
164-5072 Lines Gp-Connecting
| 14***98 | Grommet | 2 |
| 16***72 | Lines Group-Connecting | 1 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 2 |
154-6216 Lines Gp-Connecting
| 14***98 | Grommet | 4 |
| 15***16 | Lines Group-Connecting | 1 |
| 15***72 | Pin-Lynch | 2 |
130-8296 Lines Gp-Connecting
| 13***96 | Lines Group-Connecting | 1 |
| 13***06 | Hose As | 1 |
| 14***98 | Grommet | 1 |
118-9209 Lines Gp-Connecting
| 11***09 | Lines Group-Connecting | 1 |
| 12***12 | Hose As | 2 |
| 14***99 | Grommet | 2 |
138-8660 Lines Gp-Connecting
| 13***60 | Lines Group-Connecting | 1 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 4 |
| 1P***67 | Flange-Half (43.31 mm Id) | 4 |
158-6271 Lines Gp-Connecting
| 14***98 | Grommet | 2 |
| 14***99 | Grommet | 2 |
| 15***71 | Lines Group-Connecting | 1 |
141-8379 Lines Gp-Connecting
| 14***79 | Lines Group-Connecting | 1 |
| 14***99 | Grommet | 2 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 2 |
158-4616 Lines Gp-Connecting
| 14***98 | Grommet | 2 |
| 15***16 | Lines Group-Connecting | 1 |
| 1P***03 | Seal - Rectangular (31.86mm Id) | 2 |
149-6093 Lines Gp-Connecting
| 14***98 | Grommet | 1 |
| 14***99 | Grommet | 1 |
| 14***93 | Lines Group-Connecting | 1 |
178-9288 Lines Gp-Connecting
| 17***88 | Lines Group-Connecting | 1 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 4 |
| 1P***67 | Flange-Half (43.31 mm Id) | 4 |
160-7082 Lines Gp-Connecting
| 15***72 | Pin-Lynch | 2 |
| 16***82 | Lines Group-Connecting | 1 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 4 |
147-6183 Lines Gp-Connecting
| 14***83 | Lines Group-Connecting | 1 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 4 |
| 23***70 | Flange-Split | 8 |
246-4972 Lines Gp-Connecting
| 10***03 | Coupling | 4 |
| 10***05 | Connector | 4 |
| 12***72 | Hose; (1500-cm) | 0 |
137-6631 Lines Gp-Connecting
| 13***43 | Valve Group-Manual; (Auxiliary Hydraulic Lines) | 2 |
| 13***31 | Lines Group-Connecting | 1 |
| 1P***03 | Seal - Rectangular (31.86mm Id) | 3 |
131-1394 Lines Gp-Connecting
| 13***94 | Lines Group-Connecting | 1 |
| 18***34 | Hose As | 1 |
| 18***00 | Hose As | 1 |
154-6215 Lines Gp-Connecting
| 14***98 | Grommet | 1 |
| 14***99 | Grommet | 1 |
| 15***15 | Lines Group-Connecting | 1 |
175-2645 Lines Gp-Connecting
| 14***98 | Grommet | 2 |
| 17***45 | Lines Group-Connecting | 1 |
| 1P***03 | Seal - Rectangular (31.86mm Id) | 2 |
153-0118 Lines Gp-Connecting
| 15***18 | Lines Group-Connecting | 1 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 2 |
| 23***70 | Flange-Split | 4 |
138-8116 Lines Gp-Connecting
| 13***16 | Lines Group-Connecting | 1 |
| 14***99 | Grommet | 4 |
| 15***72 | Pin-Lynch | 2 |
119-3464 Lines Gp-Connecting
| 11***64 | Lines Group-Hammer; -Custom | 1 |
| 1P***03 | Seal - Rectangular (31.86mm Id) | 1 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 3 |
118-9210 Lines Gp-Connecting
| 11***07 | Hose As | 2 |
| 11***10 | Lines Group-Hammer; -Custom | 1 |
| 14***98 | Grommet | 2 |
249-1249 Lubrication Gp-Automatic
| 15***17 | Valve As-Relief; (Grease Pressure) | 1 |
| 15***19 | Board-Circuit | 1 |
| 15***20 | Cover-Housing | 1 |
152-3395 Lubrication Gp-Automatic
| 06***44 | Grommet | 1 |
| 10***82 | Switch As-Pressure | 1 |
| 12***90 | Coupling-Permanent | 1 |
148-8098 Lubrication Gp-Automatic
| 06***44 | Grommet | 1 |
| 10***79 | Switch As-Pressure; (Implement/Swing & Travel) | 1 |
| 12***90 | Coupling-Permanent | 1 |
152-5342 Lubrication Gp-Automatic
| 09***06 | Bolt-Socket Head; (M16x2x80-mm) | 2 |
| 15***42 | Lubrication Group-Automatic | 1 |
| 22***61 | Cartridge-Grease | 1 |
153-7532 Pump Gp-Lubrication
| 15***10 | Kit-Seal | 1 |
| 15***32 | Pump Group-Lubrication | 1 |
| 3E***06 | Ring-Retaining | 1 |
152-3402 Pump Gp-Lubrication
| 15***02 | Pump Group-Lubrication | 1 |
| 15***17 | Valve As-Relief; (Grease Pressure) | 1 |
| 15***19 | Board-Circuit | 1 |
3q-7738 Valve Gp-Check
| 12***50 | Housing-Valve | 1 |
| 12***51 | Kit-Seal | 1 |
| 16***48 | Ring-Snap | 1 |
122-8396 Valve Gp-Check
| 11***30 | Valve As-Check | 1 |
| 12***27 | Kit-Seal | 1 |
| 12***96 | Valve Group-Check | 1 |
122-8285 Valve Gp-Check
| 11***29 | Housing-Valve | 1 |
| 11***30 | Valve As-Check | 1 |
| 12***27 | Kit-Seal | 1 |
3q-7503 Valve Gp-Check
| 3E***03 | Ring-Retaining | 1 |
| 3E***22 | Seal-O-Ring; (32.2mm Id) | 1 |
| 3E***23 | Seal-O-Ring; (34.2mm Id) | 1 |
117-0275 Valve Gp-Check
| 11***75 | Valve Group-Check | 1 |
| 12***88 | Housing-Valve | 1 |
| 12***89 | Kit-Seal | 1 |
203-0886 Valve Gp-Check
| 12***51 | Kit-Seal | 1 |
| 20***86 | Valve Group-Check | 1 |
| 20***98 | Housing-Valve | 1 |
203-0811 Valve Gp-Check
| 15***10 | Kit-Seal | 1 |
| 20***11 | Valve Group-Check | 1 |
| 20***84 | Housing-Valve | 1 |
203-0801 Valve Gp-Check
| 20***01 | Valve Group-Check | 1 |
| 20***09 | Housing-Valve | 1 |
| 3E***06 | Ring-Retaining | 1 |
203-0900 Valve Gp-Check
| 09***82 | Pin-Spring | 2 |
| 11***52 | Breather As | 1 |
| 11***74 | Valve Group-Pressure Control | 1 |
187-8438 Valve Gp-Control
| 11***90 | Bolt-Hex Head | 12 |
| 18***38 | Valve Group-Control | 1 |
| 3E***24 | Lockwasher | 8 |
188-0224 Valve Gp-Control
| 11***04 | Spool | 1 |
| 11***05 | Spool | 1 |
| 12***27 | Kit-Seal | 1 |
203-0891 Valve Gp-Control
| 09***82 | Pin-Spring | 2 |
| 11***52 | Breather As | 1 |
| 11***74 | Valve Group-Pressure Control | 1 |
203-0879 Valve Gp-Control
| 11***38 | Cover | 1 |
| 11***39 | Cover | 1 |
| 12***80 | Valve Group-Pressure Control | 1 |
203-0902 Valve Gp-Control
| 20***02 | Valve Group-Control | 1 |
| 3E***31 | Seal-O-Ring; (74.5mm Id) | 1 |
| 3Q***17 | Cover | 1 |
203-0803 Valve Gp-Control
| 12***89 | Kit-Seal | 1 |
| 12***84 | Valve Group-Pressure Control | 1 |
| 15***09 | Seal | 6 |
187-8615 Valve Gp-Control
| 18***15 | Valve Group-Control | 1 |
| 3E***23 | Lockwasher | 8 |
| 3E***24 | Lockwasher | 12 |
188-0223 Valve Gp-Control
| 11***89 | Body-Valve | 1 |
| 11***04 | Spool | 1 |
| 11***05 | Spool | 1 |
187-8616 Valve Gp-Control
| 11***38 | Cover | 1 |
| 11***39 | Cover | 1 |
| 12***39 | Body-Valve | 1 |
188-0222 Valve Gp-Control
| 11***67 | Breather As | 1 |
| 12***55 | Body-Valve | 1 |
| 12***89 | Kit-Seal | 1 |
122-8284 Valve Gp-Pressure Control
| 11***25 | Cover | 1 |
| 11***26 | Housing-Valve | 1 |
| 11***27 | Spool | 1 |
117-0274 Valve Gp-Pressure Control
| 11***74 | Valve Group-Pressure Control | 1 |
| 11***77 | Cover | 1 |
| 11***78 | Housing-Valve | 1 |
3q-7788 Valve Gp-Pressure Control
| 12***46 | Cover | 1 |
| 12***47 | Housing-Valve | 1 |
| 12***48 | Spool | 1 |
120-9980 Valve Gp-Pressure Control
| 12***80 | Valve Group-Pressure Control | 1 |
| 12***82 | Cover | 1 |
| 12***83 | Housing-Valve | 1 |
3q-7502 Valve Gp-Pressure Control
| 3E***29 | Seal-O-Ring; (59.5mm Id) | 1 |
| 3Q***24 | Guide-Spring | 1 |
| 3Q***25 | Seal | 1 |
122-8395 Valve Gp-Pressure Control
| 12***10 | Film-Grease | 2 |
| 12***19 | Film | 1 |
| 12***20 | Film | 2 |
Service Equipment And Supplies
159-5927 Film Gp
| 14***69 | Film-Warning; (Alert) | 2 |
| 14***70 | Film-Warning; (Read Omm) | 2 |
| 15***57 | Film-Warning; (Flying Debris, Hearing Protn) | 2 |
159-5929 Film Gp
| 14***69 | Film-Warning; (Alert) | 2 |
| 14***70 | Film-Warning; (Read Omm) | 2 |
| 15***57 | Film-Warning; (Flying Debris, Hearing Protn) | 2 |
159-5931 Film Gp
| 14***69 | Film-Warning; (Alert) | 2 |
| 14***70 | Film-Warning; (Read Omm) | 2 |
| 15***57 | Film-Warning; (Flying Debris, Hearing Protn) | 2 |
159-5928 Film Gp
| 14***69 | Film-Warning; (Alert) | 2 |
| 14***70 | Film-Warning; (Read Omm) | 2 |
| 15***57 | Film-Warning; (Flying Debris, Hearing Protn) | 2 |
160-7114 Film Gp
| 12***18 | Bushing-Tool | 1 |
| 12***35 | Seal-O-Ring | 1 |
| 12***51 | Kit-Seal | 1 |
160-2705 Film Gp
| 14***69 | Film-Warning; (Alert) | 2 |
| 14***70 | Film-Warning; (Read Omm) | 2 |
| 15***57 | Film-Warning; (Flying Debris, Hearing Protn) | 2 |
159-5930 Film Gp
| 14***69 | Film-Warning; (Alert) | 2 |
| 14***70 | Film-Warning; (Read Omm) | 2 |
| 15***57 | Film-Warning; (Flying Debris, Hearing Protn) | 2 |
273-9240 Kit-Service
| 27***40 | Kit-Service | 1 |
273-9239 Kit-Service
| 11***35 | Bushing-Tool | 1 |
| 13***61 | Bushing As | 1 |
| 13***62 | Seal | 1 |
117-0466 Film Gp
| 11***66 | Plate & Film Group | 1 |
| 14***69 | Film-Warning; (Alert) | 2 |
| 14***70 | Film-Warning; (Read Omm) | 2 |
Work Tool Arrangement
213-9663 Chart-Hammer Ar -Large Hammers
| 21***63 | Chart-Hammer Ar; -Large Hammers | 1 |
213-9665 Chart-Hammer Ar -Merchandising
| 21***65 | Chart-Hammer Ar; -Merchandising | 1 |
121-0795 Hammer Ar-Hydraulic
| 10***84 | Hammer Ar-Hydraulic | 1 |
| 12***95 | Hammer Ar | 1 |
| 12***20 | Tool Box Group | 1 |
203-0881 Hammer Ar-Hydraulic
| 12***90 | Housing Group-Hammer | 1 |
| 15***28 | Film Group | 1 |
| 20***80 | Hammer Group-Hydraulic | 1 |
120-5955 Hammer Ar-Hydraulic
| 12***55 | Hammer Ar-Hydraulic | 1 |
| 12***56 | Powercell Group-Hammer; Power Cell Gp-Hammer | 1 |
| 12***90 | Housing Group-Hammer | 1 |
121-0550 Hammer Ar-Hydraulic
| 11***18 | Hammer Ar-Hydraulic | 1 |
| 12***50 | Hammer Ar-Hydraulic | 1 |
| 12***21 | Box Group-Tool; (For European Use Only) | 1 |
120-5948 Hammer Ar-Hydraulic
| 12***48 | Hammer Ar-Hydraulic | 1 |
| 12***49 | Hammer Ar-Hydraulic | 1 |
| 12***16 | Tool Box Group; (For European Use Only) | 1 |
120-5954 Hammer Ar-Hydraulic
| 12***54 | Hammer Ar-Hydraulic | 1 |
| 12***55 | Hammer Ar-Hydraulic | 1 |
| 12***18 | Tool Box Group | 1 |
113-9118 Hammer Ar-Hydraulic
| 11***18 | Hammer Ar-Hydraulic | 1 |
| 11***19 | Hammer Group-Hydraulic | 1 |
| 11***20 | Housing Group-Output | 1 |
203-0806 Hammer Ar-Hydraulic
| 11***20 | Housing Group-Output | 1 |
| 15***31 | Film Group | 1 |
| 20***04 | Hammer Group-Hydraulic | 1 |
203-0905 Hammer Ar-Hydraulic
| 12***16 | Tool Box Group; (For European Use Only) | 1 |
| 20***04 | Hammer Ar-Hydraulic | 1 |
| 20***05 | Hammer Ar-Hydraulic | 1 |
104-2997 Hammer Ar-Hydraulic
| 10***97 | Hammer Ar-Hydraulic | 1 |
| 12***60 | Hammer Ar-Hydraulic | 1 |
| 12***19 | Tool Box Group; (European Source Only) | 1 |
203-0904 Hammer Ar-Hydraulic
| 12***51 | Housing Group-Hammer | 1 |
| 16***05 | Film Group | 1 |
| 20***03 | Hammer Group-Hydraulic | 1 |
117-0107 Hammer Ar-Hydraulic
| 11***06 | Hammer Ar-Hydraulic | 1 |
| 11***07 | Hammer Ar-Hydraulic | 1 |
| 12***17 | Tool Box Group | 1 |
153-1093 Hammer Ar-Hydraulic
| 12***29 | Housing Group-Hammer | 1 |
| 15***93 | Hammer Ar-Hydraulic | 1 |
| 15***94 | Hammer Group-Hydraulic | 1 |
203-0808 Hammer Ar-Hydraulic
| 12***21 | Box Group-Tool; (For European Use Only) | 1 |
| 20***06 | Hammer Ar-Hydraulic | 1 |
| 20***08 | Hammer Ar-Hydraulic | 1 |
203-0882 Hammer Ar-Hydraulic
| 12***18 | Tool Box Group | 1 |
| 20***81 | Hammer Ar-Hydraulic | 1 |
| 20***82 | Hammer Ar-Hydraulic | 1 |
203-0895 Hammer Ar-Hydraulic
| 12***29 | Housing Group-Hammer | 1 |
| 15***27 | Film Group | 1 |
| 20***93 | Hammer Group-Hydraulic | 1 |
106-3284 Hammer Ar-Hydraulic
| 10***84 | Hammer Ar-Hydraulic | 1 |
| 12***94 | Housing Group-Output | 1 |
| 15***30 | Film Group | 1 |
120-5960 Hammer Ar-Hydraulic
| 10***73 | Housing Group-Hammer | 1 |
| 12***60 | Hammer Ar-Hydraulic | 1 |
| 15***29 | Film Group | 1 |
120-5949 Hammer Ar-Hydraulic
| 12***49 | Hammer Ar-Hydraulic | 1 |
| 12***50 | Powercell Group-Hammer | 1 |
| 12***51 | Housing Group-Hammer | 1 |
3q-7565 Hammer Ar-Hydraulic
| 15***61 | Housing Group-Hammer | 1 |
| 16***14 | Film Group | 1 |
| 16***04 | Hammer Group-Hydraulic | 1 |
203-0897 Hammer Ar-Hydraulic
| 12***17 | Tool Box Group | 1 |
| 20***95 | Hammer Ar-Hydraulic | 1 |
| 20***97 | Hammer Ar-Hydraulic | 1 |
106-3505 Hammer Ar-Hydraulic
| 10***05 | Hammer Ar-Hydraulic | 1 |
| 12***21 | Box Group-Tool; (For European Use Only) | 1 |
| 3Q***65 | Hammer Ar-Hydraulic | 1 |
117-0106 Hammer Ar-Hydraulic
| 11***06 | Hammer Ar-Hydraulic | 1 |
| 11***66 | Plate & Film Group | 1 |
| 12***28 | Powercell Group-Hammer; Power Cell Gp-Hammer | 1 |
Work Tools
087-5960 Adjuster Gp-Bucket
| 08***60 | Adjuster Group-Bucket; -E, F-Family | 1 |
| 13***51 | Plate | 1 |
| 16***92 | Flange | 1 |
7y-3476 Adjuster Gp-Bucket
| 08***74 | Pin | 1 |
| 08***75 | Shim (0.5mm Thick) | 4 |
| 08***76 | Shim (1.0mm Thick) | 6 |
7y-2219 Adjuster Gp-Bucket
| 08***21 | Shim (0.5mm Thick) | 4 |
| 08***22 | Shim (1.0mm Thick) | 6 |
| 13***48 | Plate | 1 |
112-4831 Bracket Gp-Mounting
| 11***31 | Bracket Group-Mounting | 1 |
| 11***42 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
255-7552 Bracket Gp-Mounting
| 25***52 | Bracket Group-Mounting | 1 |
| 25***06 | Bracket As | 1 |
| 7Y***71 | Plate | 2 |
307-0031 Bracket Gp-Mounting
| 30***31 | Bracket Group-Mounting | 1 |
| 30***32 | Bracket As | 1 |
| 7Y***65 | Bolt; (M36x4x140-mm) | 10 |
125-6582 Bracket Gp-Mounting
| 08***60 | Adjuster Group-Bucket; -E, F-Family | 1 |
| 12***53 | Bracket As | 1 |
| 12***82 | Bracket Group-Mounting | 1 |
128-4336 Bracket Gp-Mounting
| 12***36 | Bracket Group-Mounting | 1 |
| 12***37 | Bracket As | 1 |
| 7X***55 | Bolt; (M24x3x260-mm) | 1 |
158-2882 Bracket Gp-Mounting
| 15***40 | Bracket As | 1 |
| 15***82 | Bracket Group-Mounting | 1 |
| 6A***99 | Bearing-Sleeve | 4 |
162-8712 Bracket Gp-Mounting
| 16***12 | Bracket Group-Mounting | 1 |
| 16***90 | Bracket As | 1 |
| 7X***89 | Bolt; (M24x3x100-mm) | 10 |
123-9625 Bracket Gp-Mounting
| 12***25 | Bracket Group-Mounting | 1 |
| 12***01 | Bracket As | 1 |
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
209-8269 Bracket Gp-Mounting
| 20***69 | Bracket Group-Mounting | 1 |
| 20***70 | Bracket As | 1 |
| 7Y***65 | Bolt; (M36x4x140-mm) | 10 |
128-4341 Bracket Gp-Mounting
| 12***41 | Bracket Group-Mounting | 1 |
| 17***39 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
215-6525 Bracket Gp-Mounting
| 21***24 | Bracket As | 1 |
| 21***25 | Bracket Group-Mounting | 1 |
| 21***25 | Shim; (0.5-mm Thk) | 6 |
123-4115 Bracket Gp-Mounting
| 12***15 | Bracket Group-Mounting | 1 |
| 12***52 | Bracket As | 1 |
| 4B***58 | Screw (Identification Plate) Mounting | 4 |
121-5546 Bracket Gp-Mounting
| 08***60 | Adjuster Group-Bucket; -E, F-Family | 1 |
| 12***46 | Bracket Group-Mounting | 1 |
| 12***17 | Bracket As | 1 |
123-3343 Bracket Gp-Mounting
| 12***43 | Bracket Group-Mounting | 1 |
| 12***44 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
324-5906 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 32***06 | Bracket Group-Mounting | 1 |
| 32***07 | Bracket As | 1 |
123-7421 Bracket Gp-Mounting
| 12***21 | Bracket Group-Mounting | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
| 3J***54 | Packing,Preformed Part Of Kit P/N 5r***27 | 1 |
179-9866 Bracket Gp-Mounting
| 17***66 | Bracket Group-Mounting | 1 |
| 17***79 | Bracket As | 1 |
| 7Y***65 | Bolt; (M36x4x140-mm) | 20 |
201-1369 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 20***69 | Bracket Group-Mounting | 1 |
325-5619 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 32***19 | Bracket Group-Mounting | 1 |
| 32***27 | Bracket As | 1 |
129-8147 Bracket Gp-Mounting
| 12***47 | Bracket Group-Mounting | 1 |
| 12***48 | Bracket As | 1 |
| 7Y***65 | Bolt; (M36x4x140-mm) | 10 |
251-3801 Bracket Gp-Mounting
| 25***00 | Bracket As | 1 |
| 25***01 | Bracket Group-Mounting | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
127-9350 Bracket Gp-Mounting
| 12***50 | Bracket Group-Mounting | 1 |
| 12***51 | Bracket As | 1 |
| 7X***55 | Bolt; (M24x3x260-mm) | 1 |
112-5850 Bracket Gp-Mounting
| 11***50 | Bracket Group-Mounting | 1 |
| 11***09 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
129-1545 Bracket Gp-Mounting
| 12***45 | Bracket Group-Mounting | 1 |
| 12***46 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
253-4254 Bracket Gp-Mounting
| 25***54 | Bracket Group-Mounting | 1 |
| 25***55 | Bracket As | 1 |
| 7Y***65 | Bolt; (M36x4x140-mm) | 10 |
225-9607 Bracket Gp-Mounting
| 22***07 | Bracket Group-Mounting | 1 |
| 22***08 | Bracket As | 1 |
| 7Y***65 | Bolt; (M36x4x140-mm) | 10 |
179-9860 Bracket Gp-Mounting
| 17***60 | Bracket Group-Mounting | 1 |
| 17***73 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
121-6188 Bracket Gp-Mounting
| 12***88 | Bracket Group-Mounting | 1 |
| 12***84 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
128-4338 Bracket Gp-Mounting
| 12***38 | Bracket Group-Mounting | 1 |
| 17***34 | Bracket As | 1 |
| 7Y***71 | Plate | 2 |
179-9863 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 17***63 | Bracket Group-Mounting | 1 |
| 17***76 | Bracket As | 1 |
206-0950 Bracket Gp-Mounting
| 20***50 | Bracket Group-Mounting | 1 |
| 20***51 | Bracket As | 1 |
| 7Y***65 | Bolt; (M36x4x140-mm) | 10 |
112-4833 Bracket Gp-Mounting
| 11***33 | Bracket Group-Mounting | 1 |
| 11***36 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
123-6315 Bracket Gp-Mounting
| 12***12 | Bracket As | 1 |
| 12***15 | Bracket Group-Mounting | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
123-9615 Bracket Gp-Mounting
| 12***15 | Bracket Group-Mounting | 1 |
| 12***94 | Bracket As | 1 |
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
251-0068 Bracket Gp-Mounting
| 25***68 | Bracket Group-Mounting | 1 |
| 25***69 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
179-9861 Bracket Gp-Mounting
| 17***61 | Bracket Group-Mounting | 1 |
| 17***74 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 14 |
122-7988 Bracket Gp-Mounting
| 12***88 | Bracket Group-Mounting | 1 |
| 12***90 | Bracket As | 1 |
| 7Y***71 | Plate | 2 |
116-6375 Bracket Gp-Mounting
| 11***75 | Bracket Group-Mounting | 1 |
| 11***10 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
112-5537 Bracket Gp-Mounting
| 11***04 | Bracket As | 1 |
| 11***37 | Bracket Group-Mounting | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
123-0397 Bracket Gp-Mounting
| 12***97 | Bracket Group-Mounting | 1 |
| 12***98 | Bracket As | 1 |
| 7Y***65 | Bolt; (M36x4x140-mm) | 10 |
215-6527 Bracket Gp-Mounting
| 21***26 | Bracket As | 1 |
| 21***27 | Bracket Group-Mounting | 1 |
| 21***65 | Shim | 6 |
324-7896 Bracket Gp-Mounting
| 09***79 | Nut; (M36x4.0 Thd) | 10 |
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 32***96 | Bracket Group-Mounting | 1 |
179-9862 Bracket Gp-Mounting
| 17***62 | Bracket Group-Mounting | 1 |
| 17***75 | Bracket As | 1 |
| 7Y***65 | Bolt; (M36x4x140-mm) | 10 |
233-8301 Bracket Gp-Mounting
| 23***01 | Bracket Group-Mounting | 1 |
| 23***06 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
123-7419 Bracket Gp-Mounting
| 12***19 | Bracket Group-Mounting | 1 |
| 12***20 | Bracket As | 1 |
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
191-0991 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 19***91 | Bracket Group-Mounting | 1 |
| 20***54 | Bracket As | 1 |
166-1272 Bracket Gp-Mounting
| 16***72 | Bracket Group-Mounting | 1 |
| 20***03 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
112-8202 Bracket Gp-Mounting
| 11***02 | Bracket Group-Mounting | 1 |
| 16***71 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
325-9326 Bracket Gp-Mounting
| 11***31 | Bracket Group-Mounting | 1 |
| 11***33 | Bracket Group-Mounting | 1 |
| 11***37 | Bracket Group-Mounting | 1 |
301-8197 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 30***97 | Bracket Group-Mounting | 1 |
| 30***98 | Bracket As | 1 |
127-4923 Bracket Gp-Mounting
| 12***22 | Bracket As | 1 |
| 12***23 | Bracket Group-Mounting | 1 |
| 7Y***71 | Plate | 2 |
179-9865 Bracket Gp-Mounting
| 17***65 | Bracket Group-Mounting | 1 |
| 17***78 | Bracket As | 1 |
| 7Y***65 | Bolt; (M36x4x140-mm) | 10 |
116-8201 Bracket Gp-Mounting
| 11***01 | Bracket Group-Mounting | 1 |
| 11***02 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
179-9864 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 17***64 | Bracket Group-Mounting | 1 |
| 17***77 | Bracket As | 1 |
258-7936 Bracket Gp-Mounting
| 25***35 | Bracket As | 1 |
| 25***36 | Bracket Group-Mounting | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
219-0667 Bracket Gp-Mounting
| 21***67 | Bracket Group-Mounting | 1 |
| 21***68 | Bracket As | 1 |
| 7X***54 | Bolt; (M16x2x70-mm) | 12 |
251-4647 Bracket Gp-Mounting
| 25***47 | Bracket Group-Mounting | 1 |
| 25***15 | Bracket As | 1 |
| 7Y***65 | Bolt; (M36x4x140-mm) | 10 |
224-8430 Bracket Gp-Mounting
| 22***30 | Bracket Group-Mounting | 1 |
| 22***31 | Bracket As | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 14 |
125-5654 Bracket Gp-Mounting
| 12***50 | Bracket As | 1 |
| 12***54 | Bracket Group-Mounting | 1 |
| 6V***76 | Nut-Lock; (M24 X 3.0) | 10 |
226-2411 Bracket Gp-Mounting
| 22***11 | Bracket Group-Mounting | 1 |
| 22***12 | Bracket As | 1 |
| 7Y***65 | Bolt; (M36x4x140-mm) | 10 |
3q-7528 Hammer Gp-Hydraulic
| 09***92 | Seal-O-Ring; (229.3mm Id) | 1 |
| 09***31 | Seal-O-Ring | 1 |
| 11***54 | Tie Rod | 4 |
308-4130 Chart-Hammer Mounting
| 12***19 | Bracket Group-Mounting | 1 |
| 12***15 | Bracket Group-Mounting | 1 |
| 12***25 | Bracket Group-Mounting | 1 |
308-4132 Chart-Hammer Mounting
| 17***60 | Bracket Group-Mounting | 1 |
| 17***61 | Bracket Group-Mounting | 1 |
| 17***62 | Bracket Group-Mounting | 1 |
308-4131 Chart-Hammer Mounting
| 11***02 | Bracket Group-Mounting | 1 |
| 16***12 | Bracket Group-Mounting | 1 |
| 16***72 | Bracket Group-Mounting | 1 |
308-4133 Chart-Hammer Mounting
| 15***65 | Tool-Hard Rock Chisel | 1 |
| 15***05 | Tool-Soft Rock Chisel | 1 |
| 15***12 | Tool-Pyramid Point | 1 |
189-2975 Chart-Hammer Tool
| 12***11 | Tool-Chisel | 1 |
| 12***12 | Tool-Moil Point | 1 |
| 12***13 | Tool-Blunt | 1 |
189-2973 Chart-Hammer Tool
| 12***63 | Tool-Chisel | 1 |
| 12***64 | Tool-Moil Point | 1 |
| 12***65 | Tool-Blunt | 1 |
189-2971 Chart-Hammer Tool
| 12***95 | Tool-Long Chisel | 1 |
| 12***02 | Tool-Long Moil Point | 1 |
| 15***09 | Tool-Pyramid Point | 1 |
189-2977 Chart-Hammer Tool
| 09***33 | Seal-O-Ring; (Id=209.30mm) | 1 |
| 11***55 | Nut-Tie Rod | 4 |
| 11***93 | Tie Rod | 4 |
189-2964 Chart-Hammer Tool
| 12***96 | Tool-Long Chisel | 1 |
| 12***03 | Tool-Long Moil Point | 1 |
| 15***10 | Tool-Pyramid Point | 1 |
189-2963 Chart-Hammer Tool
| 11***90 | Tool-Blunt | 1 |
| 11***91 | Tool-Moil Point | 1 |
| 11***93 | Tool-Chisel | 1 |
189-2974 Chart-Hammer Tool
| 11***68 | Tool-Chisel | 1 |
| 11***69 | Tool-Moil Point | 1 |
| 11***70 | Tool-Blunt | 1 |
113-9119 Hammer Gp-Hydraulic
| 10***64 | Plug | 1 |
| 11***19 | Hammer Group-Hydraulic | 1 |
| 11***89 | Body-Valve | 1 |
203-0903 Hammer Gp-Hydraulic
| 09***83 | Seal-O-Ring (Id=174.00mm) | 1 |
| 11***48 | Pin-Retaining | 1 |
| 12***13 | Cylinder | 1 |
203-0880 Hammer Gp-Hydraulic
| 09***92 | Seal-O-Ring; (229.3mm Id) | 2 |
| 09***33 | Seal-O-Ring; (Id=209.30mm) | 1 |
| 11***52 | Breather As | 1 |
203-0804 Hammer Gp-Hydraulic
| 11***90 | Carrier-Seal | 1 |
| 11***92 | Cylinder | 1 |
| 11***93 | Carrier-Seal | 1 |
203-0893 Hammer Gp-Hydraulic
| 09***31 | Seal-O-Ring | 1 |
| 11***52 | Breather As | 1 |
| 11***90 | Seal; (90.0mm Id) | 2 |
161-3504 Hammer Gp-Hydraulic
| 11***90 | Carrier-Seal | 1 |
| 11***92 | Cylinder | 1 |
| 11***93 | Carrier-Seal | 1 |
153-1094 Hammer Gp-Hydraulic
| 12***80 | Locknut; (M12x1.75-Thd) | 3 |
| 14***45 | Seal | 1 |
| 15***94 | Hammer Group-Hydraulic | 1 |
135-6553 Housing Gp-Hammer
| 10***79 | Pin | 8 |
| 13***53 | Housing Group-Hammer | 1 |
| 13***54 | Plate Damper | 7 |
158-5061 Housing Gp-Hammer
| 15***61 | Housing Group-Hammer | 1 |
| 3Q***99 | Accumulator Bottom | 1 |
| 3Q***39 | Accumulator Cover | 1 |
120-9990 Housing Gp-Hammer
| 10***68 | Buffer | 1 |
| 10***69 | Pad | 2 |
| 12***89 | Kit-Seal | 1 |
106-3173 Housing Gp-Hammer
| 10***73 | Housing Group-Hammer | 1 |
| 11***24 | Pad | 2 |
| 11***25 | Buffer As | 1 |
7q-8843 Housing Gp-Hammer
| 11***23 | Housing Group-Hammer | 1 |
| 11***24 | Pad | 2 |
| 11***25 | Buffer As | 1 |
120-6029 Housing Gp-Hammer
| 11***49 | Pad | 2 |
| 11***50 | Buffer | 1 |
| 12***29 | Housing Group-Hammer | 1 |
136-7260 Housing Gp-Hammer
| 13***60 | Housing Group-Hammer | 1 |
| 13***64 | Pin | 8 |
| 13***68 | Eye-Lifting | 1 |
111-7223 Housing Gp-Hammer
| 11***23 | Housing Group-Hammer | 1 |
| 12***92 | Housing | 1 |
| 12***93 | Pad | 2 |
152-6997 Housing Gp-Hammer
| 11***54 | Bolt; (M14x2x70-mm) | 4 |
| 11***89 | Bolt-Socket Head; (M20x2.5x60-mm) | 4 |
| 12***17 | Bolt-Socket Head; (M24x3x70-mm) | 8 |
120-5951 Housing Gp-Hammer
| 12***51 | Housing Group-Hammer | 1 |
| 12***51 | Kit-Seal | 1 |
| 12***52 | Pad | 2 |
136-7295 Housing Gp-Hammer
| 10***79 | Pin | 8 |
| 13***95 | Housing Group-Hammer | 1 |
| 13***21 | Plate-Wear | 6 |
151-1117 Housing Gp-Hammer
| 11***27 | Eyebolt | 1 |
| 12***65 | Plate-Wear | 2 |
| 12***66 | Plate-Wear | 6 |
133-8572 Housing Gp-Hammer
| 11***27 | Eyebolt | 1 |
| 13***72 | Housing Group-Hammer | 1 |
| 13***73 | Plate-Damper | 7 |
113-9120 Housing Gp-Hammer
| 11***20 | Housing Group-Output | 1 |
| 12***27 | Kit-Seal | 1 |
| 12***93 | Pad | 2 |
121-0794 Housing Gp-Hammer
| 11***27 | Eyebolt | 1 |
| 12***94 | Housing Group-Output | 1 |
| 13***73 | Plate-Damper | 7 |
120-5956 Hammer Gp-Hydraulic
| 11***52 | Breather As | 1 |
| 11***90 | Seal; (90.0mm Id) | 2 |
| 11***31 | Head-Front | 1 |
120-5950 Hammer Gp-Hydraulic
| 09***92 | Seal-O-Ring; (229.3mm Id) | 2 |
| 09***33 | Seal-O-Ring; (Id=209.30mm) | 1 |
| 11***52 | Breather As | 1 |
120-6028 Hammer Gp-Hydraulic
| 09***31 | Seal-O-Ring | 1 |
| 11***52 | Breather As | 1 |
| 11***90 | Seal; (90.0mm Id) | 2 |
3q-7939 Hammer Gp-Hydraulic
| 10***64 | Plug | 1 |
| 11***89 | Body-Valve | 1 |
| 11***90 | Carrier-Seal | 1 |
H120CS serial number reference
The PIN/serial plate on this hammer is riveted or stamped near the top of the housing, close to the mounting bracket and valve body area, not on a carrier excavator. Read the first three characters as the model prefix (9MM for this hammer family) and the digits that follow as the sequential build number; the sequence number, not the prefix alone, is what a dealer uses to pin down whether a given unit was built and sold as plain "120", "H120 S", or "H120C S". Citations for the exact H120S/H120CS sequence-number cutoff vary (roughly high-200s to low-400s), so confirm the specific number with a dealer using the full PIN.
| Prefix | Identifies | Notes |
|---|---|---|
| 9MM | H120CS | Shared serial-number prefix used across the 120 hammer family's life: base "120", then "H120 S", then "H120C S" (silenced, slip-fit lower tool bushing). Two independently documented in-service units carry this prefix under the H120CS name (formats 9MM04220 and 9MM05050). A factory parts-manual grouping page lists "115/H115 S, 120/H120 S/H120C S, 130/H130 S..." hammers under one 9MM00001-UP prefix block, and a dedicated H120S/H120CS parts manual further splits that block by sequence number, with citations placing the H120CS start point around 9MM400-Up (a further citation for the H120S/H120CS cutoff varies between roughly the high-200s and low-400s; confirm the exact sub-range cutoff with a dealer using the full PIN). Sized for Cat 315D-329D class carrier excavators (rated to a maximum carrier weight of roughly 27 000 kg / 59 500 lb). |
Frequently asked questions
What carrier weight class fits the Caterpillar H120C S hammer?
The H120C S is matched to excavators in the 17,000-26,000 kg (37,400-57,200 lb) operating class, with some later configurations extending to about 27,000 kg (59,500 lb).
What is the H120C S's impact energy class?
It falls in the 4,067 J (3,000 ft-lbf) impact energy class, delivering 350-620 blows per minute on 100-170 L/min (26-45 gpm) of hydraulic flow at roughly 14,000 kPa (2,030 psi).
What replaced the H120C S in Caterpillar's current hammer lineup?
Caterpillar's current 120-class offering is the H120 S Performance Hammer and the E-series H120E S, both using an updated housing and a larger tool diameter. The H120C S is a superseded, earlier sealed and sound-suppressed model, though Cat parts catalogs still support it.
What H120CS owners discuss
Why does the tool bushing on an H120CS wear out faster than expected?
Owners most often trace early bushing wear to two habits: skipping the grease routine and letting the tool run without steady down-force. The lower bushing rides directly against the tool shaft, so if the autolube reservoir runs dry or the manual grease point gets missed, metal-to-metal contact accelerates wear within a short number of working hours. Dust and fines packing in around the shaft after the dust seal hardens or splits has the same effect, since grit acts like grinding paste between shaft and bushing. Once play develops, it only gets worse under impact loading, so most crews check shaft-to-bushing clearance at every tool change rather than waiting for visible knock. If clearance is already out of spec, have your dealer verify remaining bushing life before returning the tool to service.
How much grease does the H120CS actually need, and what happens if it's under-greased?
Field consensus is to grease generously and often rather than sparingly — several trigger pulls of hammer paste at the tool/bushing interface per shift of use, more in wet or abrasive digging. Copper-graphite hammer paste is preferred over generic chassis grease because it holds up to the heat generated at the tool shank. Under-greasing shows up first as a dry, grinding sound and faster bushing wear, then progresses to scoring on the tool shaft and, in worse cases, damage to the lower piston seal as heat and contamination migrate up into the cylinder. Crews running the factory auto-greaser still check the reservoir level and bleed air from the line after any hose or cartridge change, since a system that looks primed can still be delivering no grease at the tip.
What carrier hydraulic flow and pressure does the H120CS need, and what goes wrong if it's mismatched?
The H120CS is sized for carriers in roughly the 17–26 tonne class, needing about 100–170 L/min (26–45 gpm) of flow at roughly 140 bar (2,030–2,180 psi) working pressure. Operators matching a hammer to an unfamiliar carrier generally get the excavator's auxiliary circuit flow-tested first rather than trusting the spec plate alone, since worn pumps or relief valves set outside factory range can quietly starve or overdrive the tool. Too little flow or pressure gives a slow, weak-hitting hammer that feels underpowered even when the tool itself is fine. Too much flow runs the oil hot, which cooks seals in both the hammer and the carrier's own hydraulic system and can shorten accumulator and piston-seal life well before normal wear would call for it.
What damage does blank-firing (dry-firing) cause on this hammer, and how do operators avoid it?
Firing the hammer when the tool tip isn't pressed against material sends the full piston impact straight through the tool into the bushings and housing instead of into the rock, since there's no material there to absorb the energy. Repeated blank strikes are cited as a leading cause of cracked mounting hardware, accelerated bushing wear, and boom-pin fatigue transmitted back through the carrier's linkage. Experienced operators train themselves to feel and hear the change in vibration the instant material fractures and get off the pedal immediately, and they make a habit of shutting off the hydraulic trigger before lifting or repositioning the tool so it can't fire while off the surface. Because repeated blank-firing events can mask cumulative structural damage, have your dealer verify housing and mounting condition after any known dry-fire incident.
What are the telltale signs the H120CS's accumulator or seals are wearing out?
A weakening or inconsistent blow — hitting fine for a while then fading, or an increase in recoil felt back through the carrier — is the most commonly reported early symptom of nitrogen or seal trouble. Other signs include erratic blow rate, unusual knocking or chattering from the top of the hammer, and oil that looks aerated or milky from nitrogen mixing into the hydraulic fluid past a worn seal. Community advice is consistent that nitrogen pre-charge should be checked on a routine interval with a proper charging kit and gauge rather than guessed at, and that hammers should be stored resting on the tool (not laid on their side) for any length of time, since a horizontal hammer can bleed down its charge faster. Because charging involves pressurized gas, have your dealer verify pre-charge pressure and reseat any suspect seals rather than servicing the accumulator in the field.
How durable is the H120CS's dust shield and noise-damping housing in daily use?
The dust seal and shrouding around the tool bushing are generally regarded as solid from the factory, and their main job is keeping fines out of the bushing bore rather than reducing sound — once that seal splits or goes missing, bushing wear accelerates noticeably faster in dusty or abrasive digging. The internal buffering that damps vibration and noise at the top of the housing holds up well under normal use, but operators note it can't fully mask a hammer that's already loose internally; rising noise or a harsher clatter is often the first outward clue that something upstream (bushing clearance, mounting bolts, or accumulator charge) needs attention rather than a shield problem on its own.
What should I check before buying a used H120CS?
Buyers consistently check the same short list: tool shaft and bushing clearance (side-to-side play is the fastest tell of hours put on a tool), the housing and mounting bracket for cracks or repair welds, and the hydraulic couplers and hose runs for leaks or chafing. They ask for whatever maintenance records exist, since a hammer greased and serviced on schedule is worth far more than one that looks clean but was run dry between owners. A quick way to gauge accumulator health without instruments is watching blow consistency once it warms up — fading or erratic hits under a short work cycle point to a tired accumulator or seals. Because accumulator charge and internal wear aren't fully visible from the outside, have your dealer verify pre-charge pressure and internal condition before finalizing a used purchase.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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