Caterpillarwork toolmulti processor
Caterpillar VT50
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar VT50 is a passive hydraulic demolition work tool, part of the Verachtert-built Multi-Processor line that also includes the VT30, VT40, and VT60. It has no engine, no ECM, and no undercarriage of its own; it mounts on a host excavator in roughly the 35 to 60 tonne class through a pin-on quick coupler and runs entirely off the carrier's hydraulic circuit. Operating weight lands near 4,180 kg (9,215 lb) as fitted with a crusher-style jaw, though this figure shifts with jaw configuration and should be treated as approximate. The tool ships with interchangeable jaw sets, crusher, pulverizer, shear, and combination jaw, each carrying pinned, field-replaceable wear tips and blades so one host frame covers primary demolition, secondary reduction, and rebar cutting without swapping the whole attachment. Verachtert became part of Caterpillar in 1998, and the VT-series carried the brand's demolition-tool line forward under the Cat badge while retaining its own serial and manual family separate from native Cat products.
Across the VT30/40/50/60 family, Caterpillar tracked each sibling with its own host and jaw serial prefixes even though all four shared a common parts and operation manual. The VT-series was eventually succeeded in Caterpillar's own lineup by the native MP-series (MP15 through MP40, and MP318/324), which uses a different modular body design and its own parts numbering, with no shared prefix or manual carryover from the VT tools. In the used and parts market this makes the VT50 a legacy tool: still working demolition contractor fleets, still supported through Verachtert-sourced pins, bushings, bearings, and jaw wear parts, but no longer the current factory design. Buyers shopping this class of attachment need to match jaw type and host coupler class carefully, since specs bleed easily between the VT50 and unrelated same-numbered Verachtert products (steel shears, concrete cutters, and pulverizers) that share adjacent naming but are different tools entirely.
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 VT50 specifications
Engine
| Engine | None. The VT50 is a passive hydraulic demolition Multi-Processor with no onboard engine or ECM. It runs off the carrier excavator's hydraulic system. |
Weights
| Operating weight | Approximately 4,180 kg (9,215 lb) as equipped with a crusher-style jaw set. Weight varies by jaw configuration (shear, crusher/pulverizer, or combi jaws) — treat this figure as configuration-dependent, not a fixed spec. |
| Shipping weight | Not separately published; use operating weight above as the closest published reference. |
| Ground pressure | Not applicable — this is a carrier-mounted attachment, not a self-propelled machine. |
Dimensions
| Transport length/width/height | Not documented in publicly available factory literature for this model. |
| Wheelbase / track gauge | Not applicable — attachment, not a tracked or wheeled machine. |
| Ground clearance | Not applicable. |
| Carrier/coupler class | Sized for excavators in the roughly 35 to 60 tonne class. Mounts via a Verachtert-type pin-on quick coupler sized to that carrier range. |
Performance
| Jaw opening time | About 4 seconds. |
| Jaw closing time | About 2.5 seconds. |
| Carrier weight class | 35 to 60 tonnes, per the class rating published alongside this model. |
| Jaw opening / cutting force | Not documented for this specific model in available sources — do not substitute figures from other Verachtert '50'-designated cutters (they are different product lines). |
| Gradeability / travel speed | Not applicable — passive attachment, no travel function of its own. |
Service capacities (summary)
| Fuel tank | Not applicable — no engine. |
| Hydraulic system | No dedicated onboard reservoir. Operates on the carrier excavator's hydraulic circuit; consult the carrier's hydraulic specification for flow and pressure requirements. |
| Engine oil | Not applicable — no engine. |
| Cooling system | Not applicable — no engine. |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
VT50 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | Not applicable | The VT50 is a passive hydraulic demolition work tool (Verachtert/Cat work tools lineage) with no onboard engine. |
| Cooling system | Not applicable | No engine or cooling system fitted to this work tool. |
| Fuel tank | Not applicable | No fuel system; the tool is powered entirely by the host excavator's hydraulics. |
| Transmission/powertrain compartment | Not applicable | No transmission or powertrain on the work tool itself. |
| Final drives | Not applicable | Not fitted; the VT50 has no travel or final drive components. |
| Axles/differentials | Not applicable | Not fitted to this attachment. |
| Hydraulic system (rotation drive and jaw cylinders) | Not separately specified for the VT50 in public documentation | The tool has no dedicated oil reservoir of its own; it runs directly off the carrier excavator's hydraulic circuit. Use the fluid grade and viscosity called out in the host machine's own OMM refill chart for its hydraulic tank (typically Cat HYDO Advanced or equivalent anti-wear hydraulic oil, viscosity grade selected by ambient temperature per the carrier's chart). No separate refill capacity or required host flow/pressure figure is published specifically for the VT50 rotation/jaw circuit. |
| Grease points (jaw pins, bushings, rotation bearing) | Spec only — no fill quantity published | Cat Multipurpose Grease (or an equivalent NLGI 2 EP/moly grease) applied at all grease fittings on the jaw pins, links, and 360-degree rotation bearing per the lubrication schedule in the work tool OMM. No cold-/hot-climate viscosity split is documented for this grease in available sources. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar VT50 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the VT50 beyond the schedule
Predictive Maintenance & Fluid Analysis
The VT50 has no engine oil or coolant to sample, so predictive work centers on the carrier's hydraulic fluid and the tool's wear metal. Pull hydraulic fluid samples from the host excavator on its normal interval and watch for particulate spikes that track with jaw pin or bushing wear. Log pin-to-bushing clearance at each inspection to trend wear rate and schedule replacement before bore damage occurs, rather than reacting to failure.
Corrective & Common Repairs
Common failures on the VT50 are worn jaw pins and bushings, cylinder rod seal weep, and rotation bearing play from packed demolition debris. Replace pins and bushings as sets, not individually, to avoid uneven bore loading. Reseal cylinders at the first sign of rod weep rather than letting contamination reach the rotation drive. Keep the jaw throat and rotation housing clear of fines so debris does not accelerate seal and bearing wear.
Overhaul & Rebuild Points
A full rebuild on the VT50 centers on the rotation bearing, cylinder, and jaw pin bores rather than any powertrain, since it has none. Re-machine or bush worn pin bores in the frame and jaw castings before they oversize beyond repair limits. Rebuild the rotation motor and reseal the cylinder together so both wear surfaces return to spec at the same service event. Inspect structural welds around pin bosses for fatigue cracking before returning the tool to service.
Seasonal & Environment Servicing
Demolition debris, concrete dust, and rebar fines drive most VT50 wear, so seasonal servicing means stripping packed material from the jaw throat, rotation bearing, and pin fittings more often in wet or muddy site conditions. In cold climates, verify the carrier's hydraulic fluid grade suits ambient temperature since the tool runs entirely on host hydraulics. Coat exposed pin bosses and welds to control corrosion during extended outdoor storage between jobs.
VT50 attachments & work tools
Jaw-set families offered
The VT50 host frame accepts factory interchangeable jaw groups: a crusher jaw, a pulverizer jaw, a shear jaw, and a combination jaw, each catalogued as its own group under the VT50 attachment listing. Jaws use pinned, field-replaceable wear tips and blades rather than weld-on edges, so a jaw style can be swapped without removing the tool from the carrier.
Coupler / mounting system
The VT50 mounts to the host excavator's stick/CW-class pin-on quick-coupler interface documented under the shared VT30/VT40/VT50/VT60 multi-processor machine family; it is a passive attachment, not a self-propelled unit, so no separate powered coupler electronics are involved. Family-wide coupler class spans roughly 25 to 40 t carriers depending on source (varies by configuration/series), consistent with this line's mid-to-upper placement in that carrier range.
Hydraulic-kit / arrangement notes
An internal cylinder-and-valve group drives jaw open/close and tool rotation, fed through a connecting hydraulic lines group that ties into the carrier's auxiliary/attachment hydraulic circuit. No onboard engine or ECM; the tool is fully carrier-hydraulics-dependent, so the host excavator must supply the correct auxiliary flow/pressure circuit for the rotation and jaw functions to work.
Factory configuration / guarding options
Configuration options are selected primarily through jaw choice at time of order (crusher, pulverizer, shear, or combination jaw), each with its own replaceable-tooth or blade wear-part set suited to a specific demolition task (crushing concrete, pulverizing, shearing rebar/steel, or general combination work). No separate armor/guarding package distinct from the standard jaw wear-part system was found documented specifically for the VT50.
All VT50 assemblies by section
Every catalogued assembly group for the Caterpillar VT50. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Frame And Body
343-9625 Housing Gp-Multi-Processor
| 17***09 | Bushing | 2 |
| 17***20 | Lock | 1 |
| 17***80 | Bolt-Socket Head; (M20x2.5x120-mm) | 36 |
324-2948 Housing Gp-Multi-Processor
| 15***18 | Lockwasher | 8 |
| 17***69 | Lock | 1 |
| 17***70 | Plate-Lock | 1 |
343-9626 Housing Gp-Multi-Processor
| 15***18 | Lockwasher | 8 |
| 17***69 | Lock | 1 |
| 17***26 | Rotator Group-Hydraulic | 1 |
324-2950 Housing Gp-Multi-Processor
| 15***18 | Lockwasher | 8 |
| 17***63 | Bushing | 2 |
| 17***69 | Lock | 1 |
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 |
339-1843 Cylinder & Valve Gp
| 14***51 | Elbow Group | 1 |
| 14***92 | Elbow; (-12 Orfs/-12 Orfs Swivel) | 2 |
| 15***46 | Seal | 1 |
341-3990 Cylinder & Valve Gp
| 14***51 | Elbow Group | 1 |
| 14***52 | Elbow As. | 2 |
| 15***18 | Lockwasher | 2 |
339-2852 Cylinder & Valve Gp
| 14***51 | Elbow Group | 1 |
| 14***92 | Elbow; (-12 Orfs/-12 Orfs Swivel) | 2 |
| 15***46 | Seal | 1 |
172-2205 Cylinder Gp-Hydraulic
| 09***48 | Nipple, Grease | 1 |
| 16***16 | Seal | 1 |
| 16***41 | Bushing | 2 |
222-8829 Cylinder Gp-Hydraulic
| 09***48 | Nipple, Grease | 1 |
| 09***06 | Bolt-Socket Head; (M16x2x80-mm) | 24 |
| 16***16 | Seal | 1 |
171-8124 Cylinder Gp-Hydraulic
| 09***48 | Nipple, Grease | 1 |
| 14***84 | Bolt-Socket Head; (M20x2.5x110-mm) | 22 |
| 16***16 | Seal | 1 |
222-8827 Cylinder Gp-Hydraulic
| 09***48 | Nipple, Grease | 1 |
| 16***16 | Seal | 1 |
| 16***87 | Bushing | 2 |
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 |
244-3135 Lines Gp-Connecting
| 24***35 | Lines Group-Connecting | 1 |
| 24***30 | Lines Group-Connecting | 1 |
| 24***31 | Lines Group-Connecting | 1 |
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 |
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 |
233-2991 Lines Gp-Connecting
| 15***95 | Adapter As | 2 |
| 15***46 | Seal | 1 |
| 1P***67 | Flange-Half (43.31 mm Id) | 4 |
244-3138 Lines Gp-Connecting
| 23***69 | Lines Group-Connecting | 1 |
| 24***38 | Lines Group-Connecting | 1 |
| 24***60 | Lines Group-Connecting | 1 |
247-6860 Lines Gp-Connecting
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 |
244-3127 Lines Gp-Connecting
| 24***27 | Lines Group-Connecting | 1 |
| 24***29 | Lines Group-Connecting | 1 |
| 24***31 | Lines Group-Connecting | 1 |
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 |
186-0126 Lines Gp-Connecting
| 17***26 | Lines Group-Connecting | 1 |
| 17***44 | Lines Group-Connecting | 1 |
| 18***26 | Lines Group-Connecting | 1 |
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 |
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 |
244-6792 Lines Gp-Connecting
| 24***92 | Lines Group-Connecting | 1 |
| 24***94 | Lines Group-Connecting | 1 |
| 24***97 | Lines Group-Connecting | 1 |
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 |
244-6793 Lines Gp-Connecting
| 24***93 | Lines Group-Connecting | 1 |
| 24***95 | Lines Group-Connecting | 1 |
| 24***98 | Lines Group-Connecting | 1 |
177-5044 Lines Gp-Connecting
| 17***44 | Lines Group-Connecting | 1 |
| 17***36 | Hose As | 2 |
| 7K***81 | Strap-Pressure & Return Hoses To | 4 |
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 |
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 |
233-2155 Lines Gp-Connecting
| 23***55 | Lines Group-Connecting | 1 |
| 23***91 | Lines Group-Connecting | 1 |
| 23***92 | Lines Group-Connecting | 1 |
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 |
244-6797 Lines Gp-Connecting
| 18***53 | Hose As | 2 |
| 24***97 | Lines Group-Connecting | 1 |
244-3136 Lines Gp-Connecting
| 23***69 | Lines Group-Connecting | 1 |
| 24***36 | Lines Group-Connecting | 1 |
| 24***78 | Lines Group-Connecting | 1 |
239-9250 Lines Gp-Connecting
| 23***50 | Lines Group-Connecting | 1 |
| 23***51 | Lines Group-Connecting | 1 |
| 23***52 | Lines Group-Connecting | 1 |
233-2992 Lines Gp-Connecting
| 14***40 | Adapter; (Straight) (-8 Orb X -8 Orfs) | 2 |
| 15***94 | Adapter As | 2 |
| 15***44 | Seal | 1 |
244-3126 Lines Gp-Connecting
| 24***26 | Lines Group-Connecting | 1 |
| 24***39 | Lines Group-Connecting | 1 |
| 24***96 | Lines Group-Connecting | 1 |
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 |
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 |
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 |
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 |
216-7650 Motor Gp-Gerotor
| 17***73 | Motor Group-Gerotor | 1 |
| 17***76 | Ring-Mounting | 1 |
| 17***77 | Gear-Drive; (15-Teeth) | 1 |
170-2173 Motor Gp-Gerotor
| 17***73 | Motor Group-Gerotor | 1 |
| 17***21 | Kit-Housing | 1 |
| 17***22 | Shaft-Output | 1 |
320-1326 Motor Gp-Gerotor
| 17***73 | Motor Group-Gerotor | 1 |
| 17***74 | Manifold Group-Control | 1 |
| 17***77 | Gear-Drive; (15-Teeth) | 1 |
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 |
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 |
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 |
265-6468 Swivel Gp
| 16***43 | Seal | 1 |
| 17***57 | Plug As | 4 |
| 17***14 | Stator | 1 |
170-3045 Swivel Gp
| 16***43 | Seal | 1 |
| 17***45 | Swivel Group | 1 |
| 17***41 | Stator | 1 |
208-8451 Valve Gp-Control
| 13***54 | Plug As | 3 |
| 20***51 | Valve Group-Control | 1 |
| 20***87 | Slack Adjuster Group | 1 |
170-3229 Valve Gp-Speed Control
| 17***29 | Valve Group-Speed Control | 1 |
| 17***30 | Plug | 6 |
| 17***31 | Valve | 1 |
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 |
Service Equipment And Supplies
170-5114 Kit-Maintenance
| 14***08 | Fitting | 2 |
| 14***86 | Fitting As | 2 |
| 15***44 | Seal | 1 |
196-8640 Kit-Maintenance
| 14***86 | Fitting As | 2 |
| 15***44 | Seal | 1 |
| 16***92 | Wrench | 1 |
171-8111 Kit-Maintenance
| 14***74 | Fitting As | 2 |
| 14***86 | Fitting As | 2 |
| 15***44 | Seal | 1 |
170-3672 Kit-Maintenance
| 14***08 | Fitting | 2 |
| 14***86 | Fitting As | 2 |
| 15***44 | Seal | 1 |
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 |
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 |
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 |
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 |
329-4192 Plate & Film Gp
| 11***73 | Seal; (0.5cm) (X2) | 0 |
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 15***96 | Film-Notice; (Lift Eye Location) | 4 |
328-5901 Plate & Film Gp
| 11***73 | Seal; (0.5cm) (X2) | 0 |
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 15***96 | Film-Notice; (Lift Eye Location) | 4 |
329-4194 Plate & Film Gp
| 11***73 | Seal; (0.5cm) (X2) | 0 |
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 15***96 | Film-Notice; (Lift Eye Location) | 4 |
328-5905 Plate & Film Gp
| 11***73 | Seal; (0.5cm) (X2) | 0 |
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 15***96 | Film-Notice; (Lift Eye Location) | 4 |
Work Tool Arrangement
329-4196 Multi-Processor Ar
| 17***11 | Kit-Maintenance | 1 |
| 31***63 | Pin Group | 1 |
| 32***92 | Plate & Film Group | 1 |
328-5899 Multi-Processor Ar
| 17***14 | Kit-Maintenance | 1 |
| 31***20 | Pin Group | 1 |
| 32***48 | Housing Group-Multi-Processor | 1 |
329-4198 Multi-Processor Ar
| 19***40 | Kit-Maintenance | 1 |
| 31***34 | Pin Group | 1 |
| 32***94 | Plate & Film Group | 1 |
328-5903 Multi-Processor Ar
| 17***72 | Kit-Maintenance | 1 |
| 30***00 | Pin Group | 1 |
| 32***50 | Housing Group-Multi-Processor | 1 |
Work Tools
231-0474 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 15***19 | Lockwasher | 8 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
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 |
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 |
169-4970 Bracket Gp-Mounting
| 16***70 | Bracket Group-Mounting | 1 |
| 16***90 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
169-5311 Bracket Gp-Mounting
| 16***11 | Bracket Group-Mounting | 1 |
| 16***16 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
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 |
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 |
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 |
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 |
169-4980 Bracket Gp-Mounting
| 16***80 | Bracket Group-Mounting | 1 |
| 16***98 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
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 |
179-1651 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 17***18 | Bracket As | 1 |
257-1047 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 25***47 | Bracket Group-Mounting | 1 |
169-4981 Bracket Gp-Mounting
| 16***81 | Bracket Group-Mounting | 1 |
| 16***99 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
179-1647 Bracket Gp-Mounting
| 15***18 | Lockwasher | 8 |
| 16***19 | Bracket As | 1 |
| 16***97 | Plate-Cover | 1 |
169-4974 Bracket Gp-Mounting
| 16***74 | Bracket Group-Mounting | 1 |
| 16***93 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
201-9466 Bracket Gp-Mounting
| 15***18 | Lockwasher | 8 |
| 16***97 | Plate-Cover | 1 |
| 20***66 | Bracket Group-Mounting | 1 |
169-4971 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 16***71 | Bracket Group-Mounting | 1 |
| 16***91 | Bracket As | 1 |
226-4127 Bracket Gp-Mounting
| 15***19 | Lockwasher | 8 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 22***19 | Bracket As | 1 |
191-4781 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 18***95 | Bracket As | 1 |
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 |
169-4976 Bracket Gp-Mounting
| 16***76 | Bracket Group-Mounting | 1 |
| 16***96 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
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 |
247-0536 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 24***36 | Bracket Group-Mounting | 1 |
234-9927 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 23***27 | Bracket Group-Mounting | 1 |
175-0342 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 17***42 | Bracket Group-Mounting | 1 |
| 17***49 | Bracket As | 1 |
169-4978 Bracket Gp-Mounting
| 16***78 | Bracket Group-Mounting | 1 |
| 16***97 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
179-1653 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 17***16 | Bracket As | 1 |
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 |
275-7645 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 27***44 | Bracket As | 1 |
| 27***45 | Bracket Group-Mounting | 1 |
248-7980 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 15***21 | Lockwasher | 2 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
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 |
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 |
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 |
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 |
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 |
191-4785 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 18***96 | Bracket As | 1 |
291-1777 Bracket Gp-Mounting
| 15***19 | Lockwasher | 8 |
| 29***77 | Bracket Group-Mounting | 1 |
| 29***80 | Cover | 1 |
169-4967 Bracket Gp-Mounting
| 16***67 | Bracket Group-Mounting | 1 |
| 16***86 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
224-2478 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 22***78 | Bracket Group-Mounting | 1 |
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 |
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 |
276-7982 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 27***82 | Bracket Group-Mounting | 1 |
| 27***83 | Bracket As | 1 |
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 |
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 |
169-4975 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 16***75 | Bracket Group-Mounting | 1 |
| 16***94 | Bracket As | 1 |
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 |
257-0102 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 25***02 | Bracket Group-Mounting | 1 |
179-1649 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***47 | Bracket As | 1 |
| 17***33 | Cover | 1 |
179-1645 Bracket Gp-Mounting
| 15***18 | Lockwasher | 8 |
| 16***18 | Bracket As | 1 |
| 16***97 | Plate-Cover | 1 |
175-0341 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 17***41 | Bracket Group-Mounting | 1 |
| 17***48 | Bracket As | 1 |
179-1648 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***46 | Bracket As | 1 |
| 17***33 | Cover | 1 |
169-4969 Bracket Gp-Mounting
| 16***69 | Bracket Group-Mounting | 1 |
| 16***89 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
318-5434 Pin Gp
| 15***21 | Lockwasher | 6 |
| 17***06 | Pin | 2 |
| 17***07 | Pin | 1 |
318-9920 Pin Gp
| 15***21 | Lockwasher | 6 |
| 16***48 | Pin | 1 |
| 16***49 | Pin | 2 |
316-9463 Pin Gp
| 15***21 | Lockwasher | 6 |
| 17***13 | Pin | 2 |
| 17***14 | Pin | 1 |
304-5400 Pin Gp
| 15***21 | Lockwasher | 6 |
| 17***60 | Pin | 2 |
| 17***61 | Pin | 1 |
VT50 serial number reference
The PIN plate for a VT-50 Multi-Processor is riveted to the main frame of the attachment, typically near the top mounting bracket/pivot-pin housing rather than on the jaw casting itself; it lists the CAT model designation, the full Product Identification Number, and unit weight. The first three characters of the PIN are the serial-number prefix (e.g., AJY for the host frame), followed by the sequential unit number. The jaw assembly carries its own separate, smaller PIN plate with its own prefix (ZYY), since Caterpillar tracks the jaw as a distinct serialized component from the host frame.
| Prefix | Identifies | Notes |
|---|---|---|
| AJY | VT-50 host attachment (frame/mount unit), first-generation production | AJY00001-UP identifies the VT-50 Multi-Processor host frame within the shared VT-30/VT-40/VT-50/VT-60 Multi-Processor manual family. Distinct from the other three siblings' host prefixes in the same family (VT-30 uses AKK, VT-40 uses ASC, VT-60 uses AXD) — each sibling has its own prefix even though all four share one parts/O&M manual set. |
| ZYY | VT-50 jaw group (interchangeable jaw set) | ZYY00001-UP identifies jaw sets built specifically for the VT-50, tracked separately from the host frame's own PIN. Distinct from the other siblings' jaw prefixes in the same family (VT-30 uses ZYW, VT-40 uses ZYX, VT-60 uses ZYZ). Confirm exact range with a dealer before ordering. |
Frequently asked questions
What engine does the Cat VT50 use?
None. The VT50 is a passive hydraulic attachment with no engine or ECM of its own. It operates entirely on hydraulic power supplied by the host excavator it is pinned to.
What is the operating weight of the Cat VT50?
Approximately 4,180 kg (9,215 lb) as equipped with a crusher-style jaw set. Weight varies with jaw configuration (shear, pulverizer, or combination jaw), so treat this as an approximate, configuration-dependent figure.
What replaced the Cat VT50?
Caterpillar's native MP-series demolition attachments (MP15 through MP40, and MP318/324) are the general successor category, using a different modular body and separate parts numbering from the Verachtert-built VT-series. No confirmed direct one-to-one model replacement for the VT50 specifically has been sourced.
What VT50 owners discuss
How does the rotation on the VT50 hold up over time?
The head rotates a full 360 degrees off the host excavator's auxiliary hydraulics, and the first wear point owners flag is the rotation bearing/slew ring - concrete dust and fines work into the raceway, so it needs greasing more often than the book interval in dusty demo work, or you end up with play and a notchy feel in the swing. A rotation motor that hunts or hesitates under load usually points to low case-drain flow or a tired motor, not the bearing itself.
What wears out fastest on the jaw end?
Jaw pins and bushings take the brunt of it, especially on the moving jaw where cyclic loading is highest. Common advice is to grease more often than the manual calls for on dusty work and to listen for a dull knock when the jaw closes - that hammering means bushings have gone oversize. Ignored long enough it turns into an elongated pin bore in the housing itself, a much bigger repair than a bushing swap.
Any quirks with swapping jaw sets on the VT50?
As part of the interchangeable-jaw Multi-Processor lineup, the body accepts crusher, pulverizer, shear, or combi jaws. The swap itself is quick, but the retaining pins need to come out clean and straight or they'll gall the bore. A pin that's hard to drive in or out is telling you there's already wear or packed debris in the bore - forcing it just makes the bore problem worse.
Do the hydraulic cylinders and seals need much attention?
Seal life on the jaw and rotation cylinders is the recurring wear item people budget for. Concrete dust is abrasive on exposed rod, so a scored or pitted rod from dragging the tool through rebar and debris chews through seals fast, showing up as a jaw that creeps or won't hold pressure overnight. Wiping the rod down and storing the tool jaws-protected noticeably extends seal life.
How often do the teeth or cutting edges need replacing?
Bolt-on crusher teeth and pulverizer/shear blades are treated as consumables, and turnover depends heavily on material - rebar-heavy reinforced concrete eats them far faster than clean concrete rubble. Most operators keep spares on hand and rotate or replace edges before the substrate underneath starts wearing, since running teeth down to bare base metal is what actually damages the jaw casting.
What about the mounting end - is there a coupler to worry about?
The VT50 pins onto the excavator through a class-matched pin-on bracket rather than a hydraulic quick-coupler, so fit-up is mostly about matching pin diameter and spacing to the carrier class. The complaint that comes up is a sloppy fit from a mismatched or worn bracket letting the whole head rock on the boom - that's a bracket/pin issue, not a fault of the tool itself.
What should I check before buying a used VT50?
Cycle the jaws fully open and closed and rotate the head through full travel both directions under load, watching for hesitation, drift, or knocking - drift with the jaws holding pressure points to worn cylinder seals, knocking points to worn pins and bushings. Try to rock the head side to side with the jaw closed to check for rotation bearing play. Inspect jaw pin bores for elongation or egg-shaping and check whether the housing has already been built up and re-bored. Compare tooth and blade wear against the base casting, and check the mounting bracket and pin fit for slop. Because the tool runs entirely off the carrier's hydraulics with no independent controls or fault codes to read, there's no diagnostic shortcut - a hands-on function test under load is the only real check. Have your dealer verify overall structural condition and cylinder/seal integrity before buying.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Serial-range & configuration variants
This page covers the Caterpillar VT50. Related factory variants of the same model family:
VT50
Need a specific VT50 part?
Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.