Caterpillarwork toolcrusher

Caterpillar VHC-50

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar VHC-50 is a hydraulic crusher/pulverizer work tool, not a self-propelled machine. It mounts to the stick of a compatible excavator in roughly the 35 to 60 tonne class through a CA-45 rotator/mounting interface, and it carries no engine, ECM, cooling system, fuel tank, or transmission of its own; jaw closing, opening, and rotation are powered entirely by the carrier's auxiliary hydraulic circuit. Operating weight is approximately 3,800 kg (8,378 lb), with a maximum jaw opening around 1,000 mm (39.4 in) and jaw width tapering from roughly 590 mm (23.2 in) at the throat to 370 mm (14.6 in) at the tip. It carries its own Cat serial prefix, WPD00001-UP, and is built on Verachtert (Netherlands) crusher/pulverizer engineering supplied to Caterpillar as an OEM work tool. Caterpillar positions it as the third size step in a four-tool VHC line (VHC-30, VHC-40, VHC-50, VHC-60) that shares one operation and maintenance manual across the family, and offers it with continuous hydraulic rotation so the jaw can be indexed to any working angle without repositioning the carrier.

As a current-catalog attachment rather than a machine with model-year generations, the VHC-50 has no documented production-year range and no clean predecessor/successor lineage; what differs across the VHC family is size and force output rather than engineering generation. VHC-30 and VHC-40 step down in jaw opening, weight, and closing force for smaller carriers, VHC-60 steps up for the largest excavators, and each sibling carries its own serial prefix within the same shared manual set. In the used and parts market, VHC-50 units trade as excavator attachments rather than as titled machines: buyers weigh confirmed wear-part condition, cutting edges, jaw bushings, rotator seals, and hydraulic-fitting integrity ahead of any hour-meter figure, since resale value tracks jaw and pin wear rather than an engine service record. With no onboard fluids or fault-code system, condition assessment on the used market leans on physical inspection of the jaw, pins, and hydraulic seals, plus verification of the WPD serial prefix against the correct carrier weight class before purchase.

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 VHC-50 specifications

Engine

Power source	No onboard engine. The VHC-50 is a passive excavator-mounted hydraulic crusher; it runs entirely off the carrier excavator's hydraulic system. Cat serial number prefix for this model is WPD00001-UP, part of the same work-tool family as the WPA-prefixed VHC-30.
Emissions tier	Not applicable — no engine on the tool itself.

Weights

Net (operating) weight	Approximately 3,800 kg (8,378 lb).
Ground pressure	Not applicable — excavator-mounted attachment, no ground contact of its own.

Dimensions

Overall height	Approximately 2,500 mm (98.4 in).
Overall length	Approximately 2,110 mm (83.1 in).
Maximum jaw opening	Approximately 1,000 mm (39.4 in).
Upper jaw width	Approximately 370 mm (14.6 in).
Lower jaw width	Approximately 590 mm (23.2 in).
Cutting-blade length	Approximately 350 mm (13.8 in).

Performance

Carrier/excavator weight class	Sized for excavators in roughly the 35 to 60 tonne class.
Closing force, jaw front	Approximately 125 t (about 1,226 kN).
Closing force, jaw neck/root	Approximately 385 t (about 3,776 kN).
Jaw closing time	About 2.5 seconds.
Jaw opening time	About 4 seconds.
Rotation	Full continuous hydraulic rotation via a rotating crown, allowing the jaw to be turned to any working angle without repositioning the carrier.

Service capacities (summary)

Opening/closing hydraulic flow (optimal)	Approximately 300 L/min (79 US gal/min).
Opening/closing hydraulic pressure (optimal)	Approximately 350 bar (5,076 psi).
Rotation circuit flow (optimal)	Approximately 40 L/min (10.6 US gal/min).
Rotation circuit pressure (optimal)	Approximately 140 bar (2,031 psi).
Fuel, engine oil, coolant	Not applicable — the VHC-50 has no engine, fuel system, or cooling system of its own; it draws hydraulic power from the carrier excavator.

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

VHC-50 fluids & capacities

System	Capacity	Recommended fluid
Hydraulic power supply (crusher circuit)	No onboard tank or pump — not applicable to this work tool	VHC-50 is a passive excavator-mounted work tool with no engine, cooling system, fuel tank, transmission, or final drives of its own. Crushing force is supplied entirely by the carrier excavator's hydraulic system through auxiliary lines. Fluid type, viscosity-by-climate grade, and reservoir capacity follow the host excavator's own operation and maintenance manual, not a spec owned by the crusher.
Pin and bushing lubrication (jaw pivot, cylinder pins, rotation bearing where fitted)	Not a fill capacity — serviced by grease gun at marked fitting points per shift/interval in the OMM's lubrication chart	Cat multipurpose extreme-pressure chassis grease (moly-fortified type used across Cat work-tool pin/bushing points). Exact named product and stroke count are not confirmed from a primary-source excerpt for this exact model — verify the specific grease callout and interval with your Cat dealer or the printed OMM lube chart before service.
Engine crankcase, cooling system, fuel tank, transmission/final drives	Not applicable	VHC-50 has none of these systems. It is an unpowered demolition/crushing attachment (part of the VHC-30/VHC-40/VHC-50/VHC-60 family), not a self-propelled machine, so the OMM does not list engine, coolant, fuel, or drivetrain fluid data for it.

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

Caterpillar VHC-50 maintenance schedule

Service interval	Tasks
Every 50 h	Visually inspect all hoses, fittings, and the hydraulic quick-coupler for leaks, chafing, or loose connections before starting work. Grease jaw pivot pins, cylinder pins, and the rotator bearing at every marked lubrication point. Inspect cutting edges and jaw wear plates for cracking, chipping, or uneven wear. Check the rotator housing and hydraulic motor for oil weeping or seal seepage. Confirm mounting bracket, pins, and retaining hardware are secure and free of play. Clear concrete fines and debris from the jaw throat and rotation crown.
Every 250 h	Re-torque mounting bracket bolts and pin retainers to factory spec. Inspect the quick-coupler locking mechanism and wear plates for play; adjust or replace as needed. Check jaw bushing clearance and shim or replace bushings showing wear. Inspect hydraulic hoses for abrasion, kinking, or heat damage and replace any suspect hose. Index or rotate cutting edges if the wear pattern across the jaw is uneven.
Every 500 h	Inspect the rotator seal and swivel joint for leakage; reseal if any seepage is found. Check jaw open/close cylinder rod seals and pins for scoring or play. Compare jaw closing and opening force against baseline figures and investigate any drop. Inspect the rotation crown gear for backlash or damaged teeth. Replace cutting edges and blade sections that have reached the wear limit.
Every 1,000 h	Remove and inspect all jaw pivot pins and bushings for scoring; replace worn sets together rather than individually. Pressure-test the crushing and rotation hydraulic circuits against the carrier's spec. Inspect the rotator motor for internal leakage or performance loss and service or exchange it if needed. Check frame and jaw-arm welds for cracking with a dye-penetrant or magnetic-particle inspection. Replace the hydraulic quick-coupler seal kit as a preventive measure.
Every 2,000 h	Perform a full teardown inspection of the jaw assembly: pins, bushings, cylinders, and wear plates. Rebuild or exchange the rotator/swivel assembly. Replace all hydraulic hoses and fittings on the tool regardless of visual condition. Inspect and recondition or replace the crown bearing and rotation gear set. Recoat the frame after structural inspection to protect against corrosion.
Every 4,000 h	Complete a full structural crack inspection of the frame, jaw arms, and mounting ears; repair or retire components per Cat structural-repair guidance. Rebuild jaw cylinders with new seal kits and inspect rod chrome for pitting. Replace the crown bearing and rotator housing as a complete assembly. Recertify closing force and cycle times against the factory baseline before returning the tool to service.

Servicing the VHC-50 beyond the schedule

Predictive maintenance & fluid analysis

Predictive maintenance on the VHC-50 centers on the carrier excavator's hydraulic system, not an onboard engine. Pull periodic fluid samples from the excavator's auxiliary circuit to track contamination introduced by the crusher's cylinders and rotator motor, since jaw-side wear generates fine debris that migrates into the shared hydraulic system. Monitor jaw closing force, opening/closing cycle time, and rotation smoothness against factory baseline figures; a measurable drop signals internal cylinder or rotator-motor wear before it turns into a hydraulic failure.

Corrective & common repairs

Common VHC-50 repairs center on the jaw and rotator, not an engine bay. Expect recurring work on cutting-edge and blade replacement as concrete and rebar wear the jaw faster than any structural component, plus pin and bushing replacement at the jaw pivot and cylinder mounts where clearance builds up from cyclic crushing loads. Rotator seal leakage and quick-coupler wear-plate looseness are the next most frequent corrective items, both traceable to the tool's constant full-rotation duty cycle rather than to any fault-code driven diagnostic, since the tool carries no ECM.

Overhaul & rebuild points

A VHC-50 overhaul is a teardown of the jaw and rotator assembly, not an engine rebuild. Major rebuild points are the jaw cylinders (reseal and inspect rod chrome), the pivot pins and bushings (replace as a matched set to restore closing-force accuracy), and the rotator/swivel housing (crown bearing, seal, and hydraulic-motor condition). Frame and jaw-arm welds should be checked for fatigue cracking before any rebuild proceeds, since the WPD-prefix structure carries the full crushing load with no separate chassis to share stress.

Seasonal & environment servicing

Seasonal care for the VHC-50 follows the carrier excavator's hydraulic-fluid grade, since the tool has no independent reservoir; confirm the host machine runs the correct viscosity grade for ambient temperature before heavy crushing duty in cold weather, when jaw cylinders and the rotator motor are most prone to slow response. In abrasive demolition or recycling environments, increase the frequency of pin, bushing, and cutting-edge inspection, and flush concrete dust and fines from the rotation crown and grease points more often to prevent grit-accelerated wear at the jaw pivot.

VHC-50 attachments & work tools

Crusher jaw assembly

VHC-50 is itself a hydraulic crusher work tool, not a carrier machine. It uses a jaw-type crushing head for breaking and reducing reinforced concrete on demolition and recycling jobs. It sits third in a four-size Cat/Verachtert hydraulic crusher lineup (VHC-30, VHC-40, VHC-50, VHC-60), one step up from VHC-40 and one step down from the largest, VHC-60.

Jaw dimensions and closing force

For a VHC-50-class unit, published dealer-listing figures show roughly 3.8 tonnes tool weight, jaw width narrowing from about 590 mm at the throat to 370 mm at the tip, and maximum jaw opening around 1000 mm. Reported closing force is on the order of 100+ tons at the front jaw and several hundred tons deeper in the jaw throat; treat these as approximate and confirm on the specific unit, since figures vary by configuration/series and were not cross-confirmed across independent sources.

Fixed-jaw vs rotating-head configuration

As with the rest of the family, a continuous-rotation head carried on an integrated hydraulic rotator housing is offered, letting the jaw be indexed to any angle without repositioning the carrier's boom or stick. A non-rotating fixed-jaw variant also exists across this size range; which head style shipped under the VHC-50 designation specifically is not confirmed in available literature.

Cutting edges and jaw wear parts

The jaw carries replaceable cutting edges (teeth) and a cutting-blade section that take the abrasive wear from rebar and concrete. Factory service documentation for this family covers cutting-edge removal/installation and crusher-jaw removal as routine wear-item service, done well ahead of any wear to the jaw structure itself.

Carrier mounting arrangement

The tool mounts to the stick/dipper of a compatible excavator through its rotator housing bracket, sized for a mid-to-large carrier class. One dealer listing for this size ties it to excavators in roughly the 35 to 60 tonne range; exact pin-center dimensions and quick-coupler adapter availability for this size are not published in Cat dealer literature and should be confirmed with a dealer before ordering a bracket.

Auxiliary hydraulic supply

As a hydraulically powered work tool, VHC-50 draws its crushing and rotation function entirely from the carrier excavator's auxiliary (work-tool) hydraulic circuit; it has no onboard engine, ECM, or independent power source. One dealer spec sheet for this size class lists roughly 300 l/min at 350 bar for jaw open/close and roughly 40 l/min at 140 bar for rotation, but these figures come from a single listing and should be matched to the specific carrier by a dealer rather than assumed.

Guarding and daily inspection

Factory operation and maintenance documentation for this family includes a daily inspection routine, a work-tool installation/removal procedure, a defined transport position, and bushing lubrication points at the pin and rotator joints. These are family-wide practices shared across VHC-30/40/50/60 rather than options specific to VHC-50.

All VHC-50 assemblies by section

Every catalogued assembly group for the Caterpillar VHC-50. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Hydraulic System

342-7060 Cylinder & Valve Gp

14***06	Bolt-Socket Head; (M20x2.5x140-mm)	5
14***51	Elbow Group	1
15***18	Lockwasher	2
15***21	Lockwasher	8

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339-2852 Cylinder & Valve Gp

14***51	Elbow Group	1
14***92	Elbow; (-12 Orfs/-12 Orfs Swivel)	2
15***46	Seal	1
15***18	Lockwasher	2

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341-3990 Cylinder & Valve Gp

14***51	Elbow Group	1
14***52	Elbow As.	2
15***18	Lockwasher	2
16***54	Seal	1

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339-1843 Cylinder & Valve Gp

14***51	Elbow Group	1
14***92	Elbow; (-12 Orfs/-12 Orfs Swivel)	2
15***46	Seal	1
15***18	Lockwasher	2

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172-2205 Cylinder Gp-Hydraulic

09***48	Nipple, Grease	1
16***16	Seal	1
16***41	Bushing	2
17***21	Adapter As	1

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222-8829 Cylinder Gp-Hydraulic

09***48	Nipple, Grease	1
09***06	Bolt-Socket Head; (M16x2x80-mm)	24
16***16	Seal	1
16***71	Bushing	2

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222-8827 Cylinder Gp-Hydraulic

09***48	Nipple, Grease	1
16***16	Seal	1
16***87	Bushing	2
17***50	Pin-Spring	1

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171-8124 Cylinder Gp-Hydraulic

09***48	Nipple, Grease	1
14***84	Bolt-Socket Head; (M20x2.5x110-mm)	22
16***16	Seal	1
16***55	Bushing	2

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234-5669 Lines Gp-Connecting

1P***04	Seal - Rectangular (45mm Dia)	2
1P***67	Flange-Half (43.31 mm Id)	4
23***69	Lines Group-Connecting	1
24***71	Hose As	2

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233-2155 Lines Gp-Connecting

23***55	Lines Group-Connecting	1
23***91	Lines Group-Connecting	1
23***92	Lines Group-Connecting	1

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177-5129 Lines Gp-Connecting

12***40	Fitting As-Hydraulic; (Quick Disconnect, Male)	2
17***29	Lines Group-Connecting	1
17***45	Hose As	2
6V***98	Seal-O-Ring -Line From Gear Pump Output	4

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244-3139 Lines Gp-Connecting

14***68	Hose As	2
24***39	Lines Group-Connecting	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	2
6V***98	Seal-O-Ring -Line From Gear Pump Output	2

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244-6793 Lines Gp-Connecting

24***93	Lines Group-Connecting	1
24***95	Lines Group-Connecting	1
24***98	Lines Group-Connecting	1

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244-3138 Lines Gp-Connecting

23***69	Lines Group-Connecting	1
24***38	Lines Group-Connecting	1
24***60	Lines Group-Connecting	1

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177-5044 Lines Gp-Connecting

17***44	Lines Group-Connecting	1
17***36	Hose As	2
7K***81	Strap-Pressure & Return Hoses To	4

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177-5026 Lines Gp-Connecting

12***40	Fitting As-Hydraulic; (Quick Disconnect, Male)	2
17***26	Lines Group-Connecting	1
17***33	Hose As	2
6V***98	Seal-O-Ring -Line From Gear Pump Output	4

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248-6178 Lines Gp-Connecting

17***22	Hose As	2
24***78	Lines Group-Connecting	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	2
6V***98	Seal-O-Ring -Line From Gear Pump Output	2

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177-5023 Lines Gp-Connecting

17***20	Hose As	2
17***23	Lines Group-Connecting	1
1P***04	Seal - Rectangular (45mm Dia)	2
1P***67	Flange-Half (43.31 mm Id)	4

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246-1429 Lines Gp-Connecting

13***59	Hose As	2
24***29	Lines Group-Connecting	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	2
6V***98	Seal-O-Ring -Line From Gear Pump Output	2

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244-3126 Lines Gp-Connecting

24***26	Lines Group-Connecting	1
24***39	Lines Group-Connecting	1
24***96	Lines Group-Connecting	1

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177-5021 Lines Gp-Connecting

12***40	Fitting As-Hydraulic; (Quick Disconnect, Male)	2
17***21	Lines Group-Connecting	1
17***22	Hose As	2
6V***98	Seal-O-Ring -Line From Gear Pump Output	4

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244-3127 Lines Gp-Connecting

17***24	Lines Group-Connecting	1
24***27	Lines Group-Connecting	1
24***29	Lines Group-Connecting	1
24***31	Lines Group-Connecting	1

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244-3135 Lines Gp-Connecting

17***46	Lines Group-Connecting	1
24***35	Lines Group-Connecting	1
24***30	Lines Group-Connecting	1
24***31	Lines Group-Connecting	1

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244-6794 Lines Gp-Connecting

09***70	Bolt-Socket Hd; (M12 X 1.75 X 45)	8
1P***04	Seal - Rectangular (45mm Dia)	2
1P***67	Flange-Half (43.31 mm Id)	4
23***81	Hose As	2

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244-6797 Lines Gp-Connecting

18***53	Hose As	2
24***97	Lines Group-Connecting	1

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177-5024 Lines Gp-Connecting

17***20	Hose As	2
17***24	Lines Group-Connecting	1
1P***04	Seal - Rectangular (45mm Dia)	1
1P***67	Flange-Half (43.31 mm Id)	2

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177-5019 Lines Gp-Connecting

17***19	Lines Group-Connecting	1
17***20	Hose As	2
7K***81	Strap-Pressure & Return Hoses To	4

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177-5046 Lines Gp-Connecting

17***20	Hose As	2
17***46	Lines Group-Connecting	1
5K***90	Seal-To Hydraulic Cooler Inlet Port	2
6V***48	Reducer Assembly	2

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247-6860 Lines Gp-Connecting

18***53	Hose As	2
24***60	Lines Group-Connecting	1
6V***98	Seal-O-Ring -Line From Gear Pump Output	2
6V***55	Nut-Face Seal; (1-14-Thd)	2

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244-6792 Lines Gp-Connecting

24***92	Lines Group-Connecting	1
24***94	Lines Group-Connecting	1
24***97	Lines Group-Connecting	1

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244-6795 Lines Gp-Connecting

09***70	Bolt-Socket Hd; (M12 X 1.75 X 45)	16
1P***04	Seal - Rectangular (45mm Dia)	4
1P***67	Flange-Half (43.31 mm Id)	8
24***95	Lines Group-Connecting	1

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244-6796 Lines Gp-Connecting

09***70	Bolt-Socket Hd; (M12 X 1.75 X 45)	16
1P***04	Seal - Rectangular (45mm Dia)	4
1P***67	Flange-Half (43.31 mm Id)	8
22***60	Hose As	2

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239-9252 Lines Gp-Connecting

23***52	Lines Group-Connecting	1
25***45	Hose As	2
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	2
6V***98	Seal-O-Ring -Line From Gear Pump Output	2

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246-1430 Lines Gp-Connecting

24***44	Hose As	2
24***30	Lines Group-Connecting	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	2
6V***98	Seal-O-Ring -Line From Gear Pump Output	2

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233-2991 Lines Gp-Connecting

15***95	Adapter As	2
15***46	Seal	1
1P***67	Flange-Half (43.31 mm Id)	4
23***91	Lines Group-Connecting	1

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244-6798 Lines Gp-Connecting

18***68	Hose As	2
24***98	Lines Group-Connecting	1
3K***60	Seal Pilot Manifold On; Seal To Boom Check Valve Drain	2
6V***98	Seal-O-Ring -Line From Gear Pump Output	2

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239-9251 Lines Gp-Connecting

1P***04	Seal - Rectangular (45mm Dia)	2
1P***67	Flange-Half (43.31 mm Id)	4
23***81	Hose As	2
23***51	Lines Group-Connecting	1

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244-3136 Lines Gp-Connecting

23***69	Lines Group-Connecting	1
24***36	Lines Group-Connecting	1
24***78	Lines Group-Connecting	1

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233-2992 Lines Gp-Connecting

14***40	Adapter; (Straight) (-8 Orb X -8 Orfs)	2
15***94	Adapter As	2
15***44	Seal	1
23***92	Lines Group-Connecting	1

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246-1431 Lines Gp-Connecting

09***70	Bolt-Socket Hd; (M12 X 1.75 X 45)	8
1P***04	Seal - Rectangular (45mm Dia)	2
1P***67	Flange-Half (43.31 mm Id)	4
23***81	Hose As	2

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170-2174 Manifold Gp-Control

14***20	Bolt-Socket Head; (M6x1x75-mm)	4
17***74	Manifold Group-Control	1
7Y***19	Seal-O-Ring (Id=12.37mm)	2

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170-2172 Motor & Manifold Gp-Rotator

17***72	Motor & Manifold Group-Rotator	1
17***73	Motor Group-Gerotor	1
17***74	Manifold Group-Control	1
17***76	Ring-Mounting	1

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170-2173 Motor Gp-Gerotor

17***73	Motor Group-Gerotor	1
17***21	Kit-Housing	1
17***22	Shaft-Output	1
17***25	Key-Square	1

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320-1326 Motor Gp-Gerotor

17***73	Motor Group-Gerotor	1
17***74	Manifold Group-Control	1
17***77	Gear-Drive; (15-Teeth)	1
27***66	Ring-Mounting	1

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216-7650 Motor Gp-Gerotor

17***73	Motor Group-Gerotor	1
17***76	Ring-Mounting	1
17***77	Gear-Drive; (15-Teeth)	1
21***50	Motor Group-Gerotor	1

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171-7526 Rotator Gp-Hydraulic

03***43	Seal-O-Ring	1
09***48	Nipple, Grease	1
14***70	Elbow, 90°,-8 Orb Swiv. /-8 Orfs	2
15***94	Adapter As	6

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319-2123 Rotator Gp-Hydraulic

08***72	Seal-O-Ring	1
14***70	Elbow, 90°,-8 Orb Swiv. /-8 Orfs	2
15***94	Adapter As	6
15***95	Adapter As	4

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329-4200 Rotator Gp-Hydraulic

09***73	Bolt; (Socket Head) (M12x1.75x60mm)	16
12***24	Seal-O-Ring; (12.37mm Id)	4
14***73	Lockwasher	8
15***94	Adapter As	6

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265-6468 Swivel Gp

16***43	Seal	1
17***57	Plug As	4
17***14	Stator	1
17***16	Ring	1

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170-3045 Swivel Gp

16***43	Seal	1
17***45	Swivel Group	1
17***41	Stator	1
17***42	Rotor	1

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208-8451 Valve Gp-Control

13***54	Plug As	3
20***51	Valve Group-Control	1
20***87	Slack Adjuster Group	1
20***88	Valve Group-Control	1

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208-5125 Valve Gp-Speed Control

09***01	Bolt-Socket Head; (M8x1.25x40-mm)	4
17***55	Seal-O-Ring	2
20***74	Bolt-Socket Head; (M16x2x55-mm)	8
20***25	Valve Group-Speed Control	1

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170-3229 Valve Gp-Speed Control

17***29	Valve Group-Speed Control	1
17***30	Plug	6
17***31	Valve	1
17***32	Plug-Screw	2

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Service Equipment And Supplies

200-2959 Lock Gp-Shear

20***14	Plate-Lock	2
20***59	Lock Group-Shear	1
8T***32	Nut (M16 X 2 Thd); (M16x2.00 Thd)	2
8T***75	Bolt; (M16x2x90-mm)	1

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200-2885 Lock Gp-Shear

20***85	Lock Group-Shear	1
20***86	Plate-Lock	2
8T***32	Nut (M16 X 2 Thd); (M16x2.00 Thd)	2
8T***75	Bolt; (M16x2x90-mm)	1

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200-2960 Lock Gp-Shear

20***16	Plate-Lock	2
20***60	Lock Group-Shear	1
8T***32	Nut (M16 X 2 Thd); (M16x2.00 Thd)	2
8T***75	Bolt; (M16x2x90-mm)	1

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200-2961 Lock Gp-Shear

20***17	Plate-Lock	2
20***61	Lock Group-Shear	1
8T***32	Nut (M16 X 2 Thd); (M16x2.00 Thd)	2
8T***75	Bolt; (M16x2x90-mm)	1

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323-0388 Plate & Film Gp

11***73	Seal; (0.5cm) (X2)	0
15***96	Film-Notice; (Lift Eye Location)	7
24***76	Film-Warning; (Do Not Operate, Read Omm)	2
31***21	Film-Warning; (Crush Hazard, Stay Back, Hand), Name-Plate (Reserve Tank Led)	2

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322-4487 Plate & Film Gp

11***73	Seal; (0.5cm) (X2)	0
15***96	Film-Notice; (Lift Eye Location)	7
24***76	Film-Warning; (Do Not Operate, Read Omm)	2
31***21	Film-Warning; (Crush Hazard, Stay Back, Hand), Name-Plate (Reserve Tank Led)	2

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318-5939 Plate & Film Gp

11***73	Seal; (0.5cm) (X2)	0
15***96	Film-Notice; (Lift Eye Location)	7
24***76	Film-Warning; (Do Not Operate, Read Omm)	2
30***53	Cover As	2

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314-9133 Plate & Film Gp

11***73	Seal; (0.5cm) (X2)	0
15***96	Film-Notice; (Lift Eye Location)	7
24***76	Film-Warning; (Do Not Operate, Read Omm)	2
30***53	Cover As	2

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323-0389 Tool Gp

16***92	Wrench	1
17***03	Wrench-T-Handle	1
17***04	Shim; (1-mm Thk)	4
20***61	Lock Group-Shear	1

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318-5940 Tool Gp

14***08	Fitting	2
16***86	Shim; (1-mm Thk)	1
16***88	Shim; (1.5-mm Thk)	1
17***03	Wrench-T-Handle	1

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322-4486 Tool Gp

14***74	Fitting As	1
14***86	Fitting As	2
15***44	Seal	1
16***81	Seal	1

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314-9135 Tool Gp

14***08	Fitting	2
16***18	Shim; (1-mm Thk)	1
16***19	Shim; (1.5-mm Thk)	1
17***03	Wrench-T-Handle	1

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Work Tool Arrangement

329-4747 Pulverizer Ar-Hydraulic

13***55	Setscrew; (M4x0.7x8-mm)	2
32***87	Pulverizer Group	1
32***88	Plate & Film Group	1
32***89	Tool Group	1

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329-4746 Pulverizer Ar-Hydraulic

13***55	Setscrew; (M4x0.7x8-mm)	2
32***72	Pulverizer Group	1
32***86	Tool Group	1
32***87	Plate & Film Group	1

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328-9352 Pulverizer Ar-Hydraulic

13***55	Setscrew; (M4x0.7x8-mm)	2
31***33	Plate & Film Group	1
31***35	Tool Group	1
32***51	Pulverizer Group	1

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328-9350 Pulverizer Ar-Hydraulic

13***55	Setscrew; (M4x0.7x8-mm)	2
31***39	Plate & Film Group	1
31***40	Tool Group	1
32***49	Pulverizer Group	1

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Work Tools

254-4039 Bracket Gp-Mounting

09***49	Washer; (22x60x6-mm Thk)	1
13***55	Setscrew; (M4x0.7x8-mm)	2
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
20***71	Washer; (26x90x8-mm Thk)	1

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169-5308 Bracket Gp-Mounting

16***08	Bracket Group-Mounting	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
17***45	Bracket Group-Mounting	1
8T***67	Washer-Hard; (26x44x4-mm Thk)	14

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175-0340 Bracket Gp-Mounting

17***90	Bolt-Socket Head; (M20x2.5x70-mm)	36
17***40	Bracket Group-Mounting	1
17***49	Bracket Group-Mounting	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	36

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179-1653 Bracket Gp-Mounting

15***18	Lockwasher	6
17***33	Cover	1
17***16	Bracket As	1
17***53	Bracket Group-Mounting	1

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179-1645 Bracket Gp-Mounting

15***18	Lockwasher	8
16***18	Bracket As	1
16***97	Plate-Cover	1
17***45	Bracket Group-Mounting	1

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193-9233 Bracket Gp-Mounting

17***33	Cover	1
19***67	Bracket As	1
19***33	Bracket Group-Mounting	1
8T***21	Washer-Hard; (11x21x2.5-mm Thk)(M10x1.50x30mm)	6

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299-0293 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
29***93	Bracket Group-Mounting	1
29***94	Bracket As	1

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179-1648 Bracket Gp-Mounting

15***18	Lockwasher	6
17***46	Bracket As	1
17***33	Cover	1
17***48	Bracket Group-Mounting	1

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179-1647 Bracket Gp-Mounting

15***18	Lockwasher	8
16***19	Bracket As	1
16***97	Plate-Cover	1
17***47	Bracket Group-Mounting	1

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191-4785 Bracket Gp-Mounting

15***18	Lockwasher	6
17***33	Cover	1
18***96	Bracket As	1
19***85	Bracket Group-Mounting	1

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209-1776 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
20***59	Plate-Serial Number	1
20***76	Bracket Group-Mounting	1

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224-2477 Bracket Gp-Mounting

17***90	Bolt-Socket Head; (M20x2.5x70-mm)	36
22***77	Bracket Group-Mounting	1
22***78	Bracket Group-Mounting	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	36

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175-0342 Bracket Gp-Mounting

16***82	Bolt-Socket Head; (M24x3x70-mm)	14
17***42	Bracket Group-Mounting	1
17***49	Bracket As	1
7X***52	Bolt-Plt; (M16 X 2.0 X 30)	2

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226-4127 Bracket Gp-Mounting

15***19	Lockwasher	8
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
22***19	Bracket As	1
22***20	Bracket Group-Mounting	1

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257-0101 Bracket Gp-Mounting

17***90	Bolt-Socket Head; (M20x2.5x70-mm)	36
25***01	Bracket Group-Mounting	1
25***02	Bracket Group-Mounting	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	36

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253-7830 Bracket Gp-Mounting

09***49	Washer; (22x60x6-mm Thk)	2
13***55	Setscrew; (M4x0.7x8-mm)	2
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
20***59	Plate-Serial Number	1

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169-4971 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
16***71	Bracket Group-Mounting	1
16***91	Bracket As	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14

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169-5307 Bracket Gp-Mounting

16***07	Bracket Group-Mounting	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
17***47	Bracket Group-Mounting	1
8T***67	Washer-Hard; (26x44x4-mm Thk)	14

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290-8330 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
20***59	Plate-Serial Number	1
29***30	Bracket Group-Mounting	1

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193-9166 Bracket Gp-Mounting

17***90	Bolt-Socket Head; (M20x2.5x70-mm)	36
19***66	Bracket Group-Mounting	1
19***33	Bracket Group-Mounting	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	36

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169-4969 Bracket Gp-Mounting

16***69	Bracket Group-Mounting	1
16***89	Bracket As	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
7X***53	Bolt-Plt; (M16 X 2.0 X 40)	2

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175-0341 Bracket Gp-Mounting

16***82	Bolt-Socket Head; (M24x3x70-mm)	14
17***41	Bracket Group-Mounting	1
17***48	Bracket As	1
7X***52	Bolt-Plt; (M16 X 2.0 X 30)	2

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169-4978 Bracket Gp-Mounting

16***78	Bracket Group-Mounting	1
16***97	Bracket As	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
7X***53	Bolt-Plt; (M16 X 2.0 X 40)	1

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179-1651 Bracket Gp-Mounting

15***18	Lockwasher	6
17***33	Cover	1
17***18	Bracket As	1
17***51	Bracket Group-Mounting	1

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185-7339 Bracket Gp-Mounting

17***90	Bolt-Socket Head; (M20x2.5x70-mm)	36
18***39	Bracket Group-Mounting	1
19***81	Bracket Group-Mounting	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	36

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248-7980 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
15***21	Lockwasher	2
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
20***59	Plate-Serial Number	1

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247-0536 Bracket Gp-Mounting

15***18	Lockwasher	6
17***33	Cover	1
24***36	Bracket Group-Mounting	1
8T***36	Capscrew; (Hex Hd) (M10 X 1.50 X 25l Gr 10.9)	6

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169-4976 Bracket Gp-Mounting

16***76	Bracket Group-Mounting	1
16***96	Bracket As	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
7X***53	Bolt-Plt; (M16 X 2.0 X 40)	1

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175-3014 Bracket Gp-Mounting

17***90	Bolt-Socket Head; (M20x2.5x70-mm)	36
17***14	Bracket Group-Mounting	1
17***51	Bracket Group-Mounting	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	36

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169-4970 Bracket Gp-Mounting

16***70	Bracket Group-Mounting	1
16***90	Bracket As	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
7Y***10	Washer-Special; (17x65x6-mm Thk)	2

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169-4981 Bracket Gp-Mounting

16***81	Bracket Group-Mounting	1
16***99	Bracket As	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
7X***53	Bolt-Plt; (M16 X 2.0 X 40)	1

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246-9991 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
17***90	Bolt-Socket Head; (M20x2.5x70-mm)	36
20***59	Plate-Serial Number	1
24***91	Bracket Group-Mounting	1

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201-9466 Bracket Gp-Mounting

15***18	Lockwasher	8
16***97	Plate-Cover	1
20***66	Bracket Group-Mounting	1
20***31	Bracket As	1

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179-1646 Bracket Gp-Mounting

15***18	Lockwasher	8
16***97	Plate-Cover	1
17***45	Bracket As	1
17***46	Bracket Group-Mounting	1

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231-0474 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
15***19	Lockwasher	8
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
22***87	Cover	1

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257-1041 Bracket Gp-Mounting

17***90	Bolt-Socket Head; (M20x2.5x70-mm)	36
25***41	Bracket Group-Mounting	1
25***47	Bracket Group-Mounting	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	36

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175-3012 Bracket Gp-Mounting

17***90	Bolt-Socket Head; (M20x2.5x70-mm)	36
17***12	Bracket Group-Mounting	1
17***53	Bracket Group-Mounting	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	36

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257-0102 Bracket Gp-Mounting

15***18	Lockwasher	6
17***33	Cover	1
25***02	Bracket Group-Mounting	1
25***03	Bracket As-Mounting	1

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169-4980 Bracket Gp-Mounting

16***80	Bracket Group-Mounting	1
16***98	Bracket As	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
7X***52	Bolt-Plt; (M16 X 2.0 X 30)	2

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175-0339 Bracket Gp-Mounting

17***90	Bolt-Socket Head; (M20x2.5x70-mm)	36
17***39	Bracket Group-Mounting	1
17***48	Bracket Group-Mounting	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	36

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169-4967 Bracket Gp-Mounting

16***67	Bracket Group-Mounting	1
16***86	Bracket As	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
5P***76	Washer Guard To Support Assembly And Guard Assembly	2

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169-4975 Bracket Gp-Mounting

13***55	Setscrew; (M4x0.7x8-mm)	2
16***75	Bracket Group-Mounting	1
16***94	Bracket As	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14

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224-2478 Bracket Gp-Mounting

15***18	Lockwasher	6
17***33	Cover	1
22***78	Bracket Group-Mounting	1
22***79	Bracket As	1

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191-4781 Bracket Gp-Mounting

15***18	Lockwasher	6
17***33	Cover	1
18***95	Bracket As	1
19***81	Bracket Group-Mounting	1

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275-7645 Bracket Gp-Mounting

16***82	Bolt-Socket Head; (M24x3x70-mm)	14
27***44	Bracket As	1
27***45	Bracket Group-Mounting	1
8T***67	Washer-Hard; (26x44x4-mm Thk)	14

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193-4497 Bracket Gp-Mounting

16***82	Bolt-Socket Head; (M24x3x70-mm)	14
19***97	Bracket Group-Mounting	1
20***66	Bracket Group-Mounting	1
8T***67	Washer-Hard; (26x44x4-mm Thk)	14

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254-4463 Bracket Gp-Mounting

09***49	Washer; (22x60x6-mm Thk)	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
20***71	Washer; (26x90x8-mm Thk)	1
25***63	Bracket Group-Mounting	1

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169-4974 Bracket Gp-Mounting

16***74	Bracket Group-Mounting	1
16***93	Bracket As	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
7X***53	Bolt-Plt; (M16 X 2.0 X 40)	2

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185-7340 Bracket Gp-Mounting

17***90	Bolt-Socket Head; (M20x2.5x70-mm)	36
18***40	Bracket Group-Mounting	1
19***85	Bracket Group-Mounting	1
8T***23	Washer-Plated; (22x35x3.5-mm Thk)	36

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257-1047 Bracket Gp-Mounting

15***18	Lockwasher	6
17***33	Cover	1
25***47	Bracket Group-Mounting	1
25***48	Bracket As-Mounting	1

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255-0001 Bracket Gp-Mounting

16***82	Bolt-Socket Head; (M24x3x70-mm)	14
20***71	Washer; (26x90x8-mm Thk)	2
25***01	Bracket Group-Mounting	1
25***02	Bracket As	1

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291-1777 Bracket Gp-Mounting

15***19	Lockwasher	8
29***77	Bracket Group-Mounting	1
29***80	Cover	1
8T***92	Capscrew; (Hex Hd) (M12 X 1.75 X 25, Gr10.9, Z)	8

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169-5311 Bracket Gp-Mounting

16***11	Bracket Group-Mounting	1
16***16	Bracket As	1
16***82	Bolt-Socket Head; (M24x3x70-mm)	14
8T***67	Washer-Hard; (26x44x4-mm Thk)	14

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276-7982 Bracket Gp-Mounting

16***82	Bolt-Socket Head; (M24x3x70-mm)	14
27***82	Bracket Group-Mounting	1
27***83	Bracket As	1
8T***67	Washer-Hard; (26x44x4-mm Thk)	14

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175-0338 Bracket Gp-Mounting

16***82	Bolt-Socket Head; (M24x3x70-mm)	14
17***38	Bracket Group-Mounting	1
17***46	Bracket Group-Mounting	1
8T***67	Washer-Hard; (26x44x4-mm Thk)	14

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179-1649 Bracket Gp-Mounting

15***18	Lockwasher	6
17***47	Bracket As	1
17***33	Cover	1
17***49	Bracket Group-Mounting	1

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322-4472 Pulverizer Gp

15***18	Lockwasher	8
15***21	Lockwasher	6
15***22	Lockwasher	10
16***41	Bushing	2

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328-9349 Pulverizer Gp

15***18	Lockwasher	10
15***21	Lockwasher	6
15***22	Lockwasher	10
16***83	Tooth; (Crusher)	10

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328-9351 Pulverizer Gp

14***75	Bolt; (M20x2.5x75-Thd)	6
15***18	Lockwasher	10
15***21	Lockwasher	6
15***22	Lockwasher	10

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323-0387 Pulverizer Gp

15***21	Lockwasher	6
16***77	Lockwasher	10
16***42	Tooth	10
17***24	Screw-Flat Head	8

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VHC-50 serial number reference

The PIN plate is riveted to the crusher body/frame, typically near the mounting bracket or on a flat area of the housing close to the hydraulic motor. It reads as a 3-letter prefix followed by a sequential number (e.g., WPD00001); the letters identify the specific model/attachment line and the digits are the production sequence, not a build date.

Prefix	Identifies	Notes
WPD	VHC-50 (all documented configurations)	Passive Verachtert-built hydraulic crusher excavator work tool, no engine or ECM. WPD is the serial prefix tied specifically to the VHC-50 in Cat parts documentation; sibling models in the same VHC-30/40/50/60 crusher family each carry their own distinct prefix rather than sharing one across the line. No generation split or WPD-suffix letter change turned up, so WPD00001-UP covers the known production run. Confirm with dealer if a PIN plate shows a different prefix.

Frequently asked questions

Does the Cat VHC-50 have its own engine?

No. The VHC-50 is a passive hydraulic crusher work tool with no engine, ECM, cooling system, or fuel tank of its own. Jaw closing, opening, and rotation are all powered by the carrier excavator's auxiliary hydraulic circuit, drawing roughly 300 l/min at 350 bar for crushing and roughly 40 l/min at 140 bar for rotation on a typical fitment.

What is the operating weight of the Cat VHC-50?

The VHC-50 weighs approximately 3,800 kg (8,378 lb) as an attachment. It is sized for excavators in roughly the 35 to 60 tonne class and mounts through a CA-45 rotator/bracket interface; it has no ground-bearing weight of its own since it never contacts the ground independently of the carrier.

What replaced the Cat VHC-50?

Nothing has replaced it. The VHC-50 remains part of Caterpillar's current VHC hydraulic-crusher work-tool lineup, positioned between the smaller VHC-30/VHC-40 and the larger VHC-60. It is a current-catalog attachment rather than a machine with model-year generations, so there is no documented predecessor or successor to it in Cat literature.

What VHC-50 owners discuss

Does the VHC-50 have its own engine or hydraulic pump?

No. It is a passive work tool with no engine, ECM, or onboard pump. All crushing force and rotation come from the carrier excavator's auxiliary hydraulic circuit through hose and quick-coupler connections to the jaw cylinder and rotator motor. Owners sizing a VHC-50 always spec it against the carrier's auxiliary flow and pressure, not any rating of the tool itself.

What wears out first on the jaw set, and how do owners judge replacement timing?

The crushing teeth and plate edges dull and round off first, well before the jaw body itself is damaged. Operators watching daily production say a duller jaw shows up as slower cycle times and more re-crushing of the same piece rather than a clean bite. Once plate thickness is visibly reduced or edges are chipped, most shops rotate or replace plates rather than run them to the steel underneath, since a badly worn edge increases cylinder load and stresses the pin bores.

How often do the pivot pins and bushings need grease, and what happens if that slips?

Daily greasing at every fitting is the consistent theme among operators running crushers and shears in continuous demolition work, with more frequent shots in dusty or wet conditions that wash grease out fast. Lack of lubrication is repeatedly cited as the top cause of pin failure: dry pins gall, develop a friction weld to the bushing, and seize the joint so it stops pivoting freely. Once that happens the fix is line-boring and pin/bushing replacement, not just re-greasing.

What hydraulic hose and fitting problems come up most on these attachments?

Owners report the same failure points repeatedly: hoses chafing against the frame or jaw where they aren't clamped, and O-ring face-seal fittings that leak after being reconnected with a speck of dirt or a nicked sealing cone trapped in the joint. Because face seals have zero tolerance for contamination, a leak that appears right after a hose or coupler swap is almost always a dirty or damaged seal face rather than a bad part. Any hose showing bulging, cracking, or a pinhole weep should be replaced before it lets go under pressure — have your dealer verify hose routing and fitting torque if leaks return after a fresh install.

The rotator feels stiff, notchy, or noisy when turning — is that normal wear?

Some looseness disappears with warm oil, but grinding, squealing, or jerky rotation is a recognized symptom of swivel/rotator seal wear from sustained continuous rotation, which stresses seals differently than a simple hinge pin. Common causes owners point to are over-torqued swivel connections, contaminated oil, or running the circuit above its rated pressure. A rotator that has gone from smooth to notchy is worth inspecting before it progresses to a seal leak — have your dealer verify the rotator and swivel are within spec before returning the attachment to service.

Does the carrier's hydraulic flow and pressure actually need to match the crusher, or will it just run slower if undersized?

It has to be matched, not just "close enough." Community consensus on attachment sizing is that flow and pressure outside an attachment's rated range causes real damage, not just sluggish performance — too little flow underpowers the jaw and rotator, while too much flow overheats the oil, accelerates pump and seal wear, and can overpower the cylinder and rotator seals. Most experienced buyers check the carrier's auxiliary circuit rating in liters per minute (gpm) and bar (psi) against the crusher's spec sheet before pairing them, and some verify with a flow meter rather than trusting the carrier's onboard readout.

What should a buyer check when inspecting a used VHC-50 or similar hydraulic crusher attachment before purchase?

Walk the frame and mounting plate first for cracks or deformation, especially around the pin bores and bearing housings — cracking there is the classic sign of overload. Check jaw plate thickness and tooth condition for even wear, then work every pin and bushing for play. Inspect all hoses, fittings, and the rotator swivel for leaks, weeping seals, or chafing, and cycle the jaw and rotator through full travel to confirm smooth, quiet operation with no hesitation. Ask for service and grease records if available, since attachments run dry for long stretches show up as premature pin and bushing wear. Given the frame and pin-bore inspection points are safety-related, have your dealer verify structural condition before the attachment goes back into service.

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

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