Caterpillarwork toolmulti processor
Caterpillar VT40
Maintenance schedule, common problems & OEM parts breakdown
The Cat VT40 is a passive hydraulic demolition work tool, a Multi-Processor built by Verachtert, designed to mount on carrier excavators in roughly the 20 to 35 tonne class (some listings narrow this to 25 to 35 tonnes) through a Verachtert CW45 dedicated coupler. It has no engine, no undercarriage, and no onboard electronics of its own; every function -jaw clamp, pulverize, shear, and 360-degree continuous rotation- runs off the host carrier's hydraulics. Operating weight runs around 2,550 kg (5,620 lb), with some configurations listed up to roughly 2,600 kg depending on the jaw fitted. The VT40 sits in the middle of the VT-series lineup, between the lighter VT30 and the larger VT50 and VT60, and all four share a single Caterpillar parts and service catalog under the AJY serial prefix. Jaw options typically span combination demolition/pulverizer jaws and shear jaws for structural steel and rebar, letting one base unit cover concrete processing and steel-cutting work with a jaw change.
The VT-series traces back to Verachtert, a Den Bosch, Netherlands attachment builder that Caterpillar acquired in 1998, and the VT30/40/50/60 family was sold and supported as Cat-branded work tools on that Verachtert-engineered platform. Over time Caterpillar moved its Multi-Processor lineup to its own native MP-series (MP15, MP20, MP30, MP40 and the larger MP318/MP324 line), which use a modular body with interchangeable jaw heads rather than the VT-series' dedicated jaw-per-unit design. New VT-series units are no longer sold, but they remain common in the used demolition and scrap-processing fleet because the base castings, pins, bushings, and hydraulic components are durable and still supported through the shared Cat SIS parts catalog. For buyers today, a used VT40 offers a lower entry cost than a current MP-series unit while still drawing on Cat's parts network, which keeps it relevant for contractors running mid-size carriers on demolition and scrap work.
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 VT40 specifications
Engine
| Power source | No onboard engine. Passive hydraulic attachment powered entirely by the carrier excavator's hydraulic system. |
| Emissions tier | Not applicable — no engine on the tool itself. |
Weights
| Operating weight (with mounting bracket) | 2550 to 2600 kg (5622 to 5732 lb), varies by configuration/source |
| Carrier (host excavator) class | 20 to 35 t (22 to 39 US ton) class excavator, sources vary slightly on lower bound |
Dimensions
| Overall height | approx. 2350 mm (92.5 in) |
| Overall depth | approx. 1750 mm (68.9 in) |
| Body width | approx. 360 mm (14.2 in) |
| Jaw opening | approx. 850 mm (33.5 in) |
| Cutting blade length | approx. 260 mm (10.2 in) |
| Alternate reported footprint (differing measurement convention) | length approx. 2250 mm (88.6 in), width approx. 1510 mm (59.4 in) — a different dimensioning convention than the height/depth/width figures above. |
Performance
| Rotation | 360-degree hydraulic rotation |
| Jaw opening time | approx. 4 seconds |
| Jaw closing time | approx. 2 to 2.5 seconds, varies by source |
| Closing/cutting force (point A, near hinge) | approx. 95 t |
| Closing/cutting force (point B, mid-blade) | approx. 135 t |
| Closing/cutting force (point C, blade tip) | approx. 290 t (approx. 2840 kN) |
| Coupler / connection | Verachtert CW45 quick-coupler interface |
Service capacities (summary)
| Hydraulic operating pressure (open/close circuit) | approx. 350 bar (5076 psi) |
| Hydraulic operating pressure (rotation circuit) | approx. 140 bar (2031 psi) |
| Hydraulic oil flow (open/close circuit) | approx. 200 l/min (52.8 US gpm) |
| Hydraulic oil flow (rotation circuit) | approx. 40 l/min (10.6 US gpm) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
VT40 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | Not applicable | The VT40 is a passive hydraulic demolition shear 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 shear is powered entirely by the host excavator. |
| Transmission/powertrain compartment | Not applicable | No transmission or powertrain on the work tool itself. |
| Final drives | Not applicable | Not fitted; the VT40 has no travel or final drive components. |
| Axles/differentials | Not applicable | Not fitted to this attachment. |
| Hydraulic system (rotation drive and cutting cylinders) | Not separately specified for the VT40 in public documentation | The shear draws hydraulic power directly from the carrier excavator's own hydraulic system rather than carrying its own oil reservoir. Use the fluid grade specified in the host machine's OMM for its hydraulic tank (typically Cat HYDO Advanced or equivalent anti-wear hydraulic oil, viscosity selected per ambient temperature per the carrier's chart). No separate refill capacity is published for the VT40 rotation/cutting circuit. |
| Grease points (jaw pins, bushings, rotation bearing) | Spec only — no fill quantity published | Cat Multipurpose Grease (or 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 VT40 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the VT40 beyond the schedule
Predictive Maintenance & Fluid Analysis
The VT40 has no onboard sensors, so condition monitoring runs through the carrier. Pull periodic hydraulic fluid samples from the host excavator for lab analysis, watching for water intrusion, particulate, and wear-metal trends that spike when the jaw's cylinder seals or rotary swivel start to leak internally. Pair that with visual wear-pattern checks on jaw pins, bushings, and blade edges; uneven wear or rising rotation backlash flags a bearing or bushing problem before it becomes a structural one.
Corrective & Common Repairs
Typical VT40 repairs center on the wear items that take the abuse: jaw pins and bushings, blade and pulverizer tooth edges, cylinder rod seals, and the rotation bearing. Chipped or rounded blades get reground or replaced in sets to keep jaw closure even. Leaking cylinder glands get reseated with new seals rather than run on. Coupler-side wear on the CW45 pins is a frequent complaint on high-cycle units and gets checked alongside jaw pin bores at every service interval.
Overhaul & Rebuild Points
Major VT40 rebuilds focus on the rotation bearing and drive, the hydraulic cylinder, and the full set of jaw pins and bushings, since these carry the repeated shock loading of crushing and shearing. A rebuild typically replaces the bearing and cylinder seals as matched sets, re-machines or replaces worn wear plates, and inspects the jaw castings for fatigue cracking around high-stress pivot points before the unit goes back into heavy demolition duty.
Seasonal & Environment Servicing
Demolition sites mean constant dust, concrete grit, and rebar snags, so hose routing and guarding need regular checks to prevent chafe-through. In cold conditions, switch to a lower-temperature-rated grease at the rotation bearing and pin points so it still pumps into the joints instead of caking, and check hydraulic hoses more often since cold, stiff rubber cracks faster under flex. In hot, dusty environments, wipe pin and bushing zerks before greasing so grit does not get pumped into the joint.
VT40 attachments & work tools
Attachment family and lineage
The VT40 is a hydraulic demolition Multi-Processor, part of the Verachtert-built VT30/VT40/VT50/VT60 Multi-Processor line factory-fitted with Caterpillar branding. It is the predecessor generation to the current Cat MP-series multi-processors, which share the same quick-change jaw concept.
Interchangeable jaw sets
The body accepts bolt-on jaw sets: a combination (metal/demo) jaw, a shear jaw for structural steel and rebar, and primary/secondary pulverizer jaws for reducing reinforced concrete and separating rebar. Jaw changeover uses pinned cutting-edge and jaw-group assemblies rather than a full attachment swap.
Rotation head
The jaw carrier rotates a full 360 degrees on a hydraulic rotation drive, letting the operator attack material from any angle without repositioning the carrier. This is standard on the VT-series body, not an added option.
Coupler and mounting
The VT40 mounts via a Verachtert-type pin-lock quick coupler (CW45-class) sized for the roughly 25-35 tonne excavator class, with pin-on bracket mounting also documented; exact coupler pin spacing varies by carrier fitment. Cat parts records also show VT-series compatibility with W330B/W345B-class wheeled excavators, not just crawler machines.
Hydraulic kit and hoses
A dedicated connecting-lines group routes auxiliary hydraulic supply from the carrier's high-flow circuit to the rotation drive and jaw cylinder; this hose/line kit is a separate parts group from the jaw and body castings. Reported working pressure for the VT40 body is around 250 bar; exact flow and pressure settings vary by carrier and hydraulic kit configuration.
Size and weight class
Bare body weight is reported in the 2.5 to 2.6 tonne range depending on source and jaw fitted, matched to carriers in the roughly 20 to 35 tonne class. Reported jaw cycle times are about 4 seconds to open and 2.5 seconds to close, though this varies with jaw type and hydraulic setup.
All VT40 assemblies by section
Every catalogued assembly group for the Caterpillar VT40. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Frame And Body
324-2950 Housing Gp-Multi-Processor
| 15***18 | Lockwasher | 8 |
| 17***63 | Bushing | 2 |
| 17***69 | Lock | 1 |
343-9626 Housing Gp-Multi-Processor
| 15***18 | Lockwasher | 8 |
| 17***69 | Lock | 1 |
| 17***26 | Rotator Group-Hydraulic | 1 |
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 |
Hydraulic System
341-3990 Cylinder & Valve Gp
| 14***51 | Elbow Group | 1 |
| 14***52 | Elbow As. | 2 |
| 15***18 | Lockwasher | 2 |
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 |
339-2852 Cylinder & Valve Gp
| 14***51 | Elbow Group | 1 |
| 14***92 | Elbow; (-12 Orfs/-12 Orfs Swivel) | 2 |
| 15***46 | Seal | 1 |
222-8827 Cylinder Gp-Hydraulic
| 09***48 | Nipple, Grease | 1 |
| 16***16 | Seal | 1 |
| 16***87 | Bushing | 2 |
172-2205 Cylinder Gp-Hydraulic
| 09***48 | Nipple, Grease | 1 |
| 16***16 | Seal | 1 |
| 16***41 | Bushing | 2 |
171-8124 Cylinder Gp-Hydraulic
| 09***48 | Nipple, Grease | 1 |
| 14***84 | Bolt-Socket Head; (M20x2.5x110-mm) | 22 |
| 16***16 | Seal | 1 |
222-8829 Cylinder Gp-Hydraulic
| 09***48 | Nipple, Grease | 1 |
| 09***06 | Bolt-Socket Head; (M16x2x80-mm) | 24 |
| 16***16 | 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 |
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 |
244-6795 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 |
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 |
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 |
244-6797 Lines Gp-Connecting
| 18***53 | Hose As | 2 |
| 24***97 | Lines Group-Connecting | 1 |
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 |
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 |
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 |
244-3127 Lines Gp-Connecting
| 24***27 | Lines Group-Connecting | 1 |
| 24***29 | Lines Group-Connecting | 1 |
| 24***31 | Lines Group-Connecting | 1 |
244-6792 Lines Gp-Connecting
| 24***92 | Lines Group-Connecting | 1 |
| 24***94 | Lines Group-Connecting | 1 |
| 24***97 | 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 |
177-5044 Lines Gp-Connecting
| 17***44 | Lines Group-Connecting | 1 |
| 17***36 | Hose As | 2 |
| 7K***81 | Strap-Pressure & Return Hoses To | 4 |
186-0126 Lines Gp-Connecting
| 17***26 | Lines Group-Connecting | 1 |
| 17***44 | Lines Group-Connecting | 1 |
| 18***26 | Lines Group-Connecting | 1 |
244-6793 Lines Gp-Connecting
| 24***93 | Lines Group-Connecting | 1 |
| 24***95 | Lines Group-Connecting | 1 |
| 24***98 | 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 |
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 |
233-2992 Lines Gp-Connecting
| 14***40 | Adapter; (Straight) (-8 Orb X -8 Orfs) | 2 |
| 15***94 | Adapter As | 2 |
| 15***44 | Seal | 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 |
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 |
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 |
244-3135 Lines Gp-Connecting
| 24***35 | Lines Group-Connecting | 1 |
| 24***30 | Lines Group-Connecting | 1 |
| 24***31 | Lines Group-Connecting | 1 |
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 |
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 |
244-3136 Lines Gp-Connecting
| 23***69 | Lines Group-Connecting | 1 |
| 24***36 | Lines Group-Connecting | 1 |
| 24***78 | Lines Group-Connecting | 1 |
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 |
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 |
320-1326 Motor Gp-Gerotor
| 17***73 | Motor Group-Gerotor | 1 |
| 17***74 | Manifold Group-Control | 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 |
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 |
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 |
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 |
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
171-8111 Kit-Maintenance
| 14***74 | Fitting As | 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 |
170-3672 Kit-Maintenance
| 14***08 | Fitting | 2 |
| 14***86 | Fitting As | 2 |
| 15***44 | Seal | 1 |
170-5114 Kit-Maintenance
| 14***08 | Fitting | 2 |
| 14***86 | Fitting As | 2 |
| 15***44 | Seal | 1 |
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 |
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 |
200-2885 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 |
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 |
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 |
Work Tool Arrangement
329-4198 Multi-Processor Ar
| 19***40 | Kit-Maintenance | 1 |
| 31***34 | Pin Group | 1 |
| 32***94 | 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 |
329-4196 Multi-Processor Ar
| 17***11 | Kit-Maintenance | 1 |
| 31***63 | Pin Group | 1 |
| 32***92 | 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
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 |
169-4969 Bracket Gp-Mounting
| 16***69 | Bracket Group-Mounting | 1 |
| 16***89 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
169-4970 Bracket Gp-Mounting
| 16***70 | Bracket Group-Mounting | 1 |
| 16***90 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
169-4967 Bracket Gp-Mounting
| 16***67 | Bracket Group-Mounting | 1 |
| 16***86 | Bracket As | 1 |
| 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 |
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 |
169-4971 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 16***71 | Bracket Group-Mounting | 1 |
| 16***91 | 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 |
291-1777 Bracket Gp-Mounting
| 15***19 | Lockwasher | 8 |
| 29***77 | Bracket Group-Mounting | 1 |
| 29***80 | Cover | 1 |
257-1047 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 25***47 | 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 |
179-1647 Bracket Gp-Mounting
| 15***18 | Lockwasher | 8 |
| 16***19 | Bracket As | 1 |
| 16***97 | Plate-Cover | 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 |
169-4975 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 16***75 | Bracket Group-Mounting | 1 |
| 16***94 | Bracket As | 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 |
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 |
201-9466 Bracket Gp-Mounting
| 15***18 | Lockwasher | 8 |
| 16***97 | Plate-Cover | 1 |
| 20***66 | Bracket Group-Mounting | 1 |
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 |
248-7980 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 15***21 | Lockwasher | 2 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
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 |
191-4781 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 18***95 | 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 |
179-1648 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***46 | Bracket As | 1 |
| 17***33 | Cover | 1 |
179-1653 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 17***16 | Bracket As | 1 |
257-0102 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 25***02 | 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 |
169-4976 Bracket Gp-Mounting
| 16***76 | Bracket Group-Mounting | 1 |
| 16***96 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
169-4974 Bracket Gp-Mounting
| 16***74 | Bracket Group-Mounting | 1 |
| 16***93 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
169-4981 Bracket Gp-Mounting
| 16***81 | Bracket Group-Mounting | 1 |
| 16***99 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
179-1651 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 17***18 | Bracket As | 1 |
231-0474 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 15***19 | Lockwasher | 8 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
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 |
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 |
169-4978 Bracket Gp-Mounting
| 16***78 | Bracket Group-Mounting | 1 |
| 16***97 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
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 |
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 |
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 |
169-5311 Bracket Gp-Mounting
| 16***11 | Bracket Group-Mounting | 1 |
| 16***16 | Bracket As | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
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 |
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 |
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 |
276-7982 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 27***82 | Bracket Group-Mounting | 1 |
| 27***83 | Bracket As | 1 |
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 |
179-1645 Bracket Gp-Mounting
| 15***18 | Lockwasher | 8 |
| 16***18 | Bracket As | 1 |
| 16***97 | Plate-Cover | 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 |
224-2478 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 22***78 | 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 |
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 |
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 |
179-1649 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***47 | Bracket As | 1 |
| 17***33 | Cover | 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 |
191-4785 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 18***96 | Bracket As | 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 |
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 |
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 |
VT40 serial number reference
The VT40 PIN plate is riveted to the tool's main housing/frame near the mounting bracket or the hydraulic cylinder and valve group, the same area as on other Cat work-tool attachments — check both sides of the frame if it is not immediately visible under grime or paint. Read the plate as a 3-letter serial prefix followed by a 5-digit sequence number (e.g. ASC00001); the prefix identifies the exact model/arrangement and the sequence number pins down the build run. If the tool carries interchangeable jaws, the jaw itself has its own separate ID plate with its own prefix (ZYX for VT40 jaw sets), distinct from the host arm's ASC plate — don't assume the two match.
| Prefix | Identifies | Notes |
|---|---|---|
| ASC | VT40 Multi-Processor host unit (base arrangement) — Verachtert-lineage attachment, VT30/VT40/VT50/VT60 family | ASC00001-Up is the serial prefix for the VT40 host arrangement in the shared VT30/VT40/VT50/VT60 Multi-Processor parts manual. Covers the housing, hydraulic cylinder and valve group, rotator, and mounting bracket assemblies that make up the VT40 host tool. No engine or ECM — passive hydraulic attachment powered off the host excavator circuit. |
| ZYX | Interchangeable jaw sets fitted to the VT40 (confirmed for primary/secondary pulverizer jaw groups) | ZYX00001-Up is the VT40's own jaw prefix, used for primary and secondary pulverizer jaw groups built for the VT-40 Multi-Processor. The VT30/VT40/VT50/VT60 family uses a distinct jaw prefix per host model (VT30=ZYW, VT40=ZYX, VT50=ZYY, VT60=ZYZ), each separately serialized from the host arm. Shear and combination jaw groups for the VT40 likely share this same ZYX prefix by family pattern; treat other jaw types under ZYX as probable, not certain, and confirm with your dealer. |
| AKK | Sibling VT30 host unit — not the VT40 itself | AKK00001-Up is the serial prefix for the VT30, the smaller sibling in the same shared parts manual as the VT40. Included here only to prevent cross-labeling; do not apply AKK-prefixed parts data to a VT40. |
| AJY | Sibling VT50 host unit — not the VT40 itself | AJY00001-Up ties to the VT50, the largest-frame sibling in the same shared parts manual as the VT40. Included for disambiguation only — do not apply to a VT40 unit. |
| AXD | Likely sibling VT60 host unit — not the VT40 itself, weakest confidence | AXD appears in the same shared VT30/VT40/VT50/VT60 manual set and is tied to Multi-Processor arrangement and bracket parts for this family. By elimination it is the probable VT60 host prefix — confirm with your dealer. Not applicable to a VT40 unit regardless. |
| ZYZ | Sibling VT60 jaw prefix — not the VT40 itself | ZYZ00001-Up is the VT60's jaw prefix, used on shear jaw groups built for the VT-60 Multi-Processor. It is NOT a VT40 jaw prefix — the VT40's own jaw serials run under ZYX, not ZYZ. Included here only to prevent cross-labeling a VT60 jaw set as a VT40 one. |
Frequently asked questions
What engine does the Cat VT40 have?
None. The VT40 is a passive hydraulic attachment with no engine, fuel system, or onboard power source of its own. It runs entirely off the hydraulic flow and pressure supplied by the host excavator it is mounted on.
What is the operating weight of the Cat VT40?
Around 2,550 kg (5,620 lb) for the base unit, with some listed configurations running up to roughly 2,600 kg depending on the jaw fitted. It is built for carrier excavators in about the 20 to 35 tonne class.
What replaced the Cat VT40?
Caterpillar phased out the Verachtert-built VT-series in favor of its own native MP-series Multi-Processors (including the MP30 and MP40), which use a modular body with interchangeable jaw heads. VT40 units are no longer sold new but remain active in the used demolition and scrap-processing market, still supported through Cat's parts catalog.
What VT40 owners discuss
What wears out first on a VT40, and how do crews judge when to replace it?
Jaw blades and piercing tips take the abuse first on any combi shear/pulverizer jaw set. Reversible or bolt-on tip and blade inserts let you flip or swap the wear part without pulling the whole jaw. The practical go/no-go owners use: rounded or chipped cutting edges, one blade riding proud of the other on closing, and a widening gap between the tips when the jaws are fully closed on a test piece. Once that gap opens up, cutting/crushing efficiency drops off fast even before the blade looks badly worn.
The 360-degree rotation feels stiff, or drags getting started - normal?
Some drag is normal, especially cold, since the head is a hydraulic-motor-driven slew ring carrying heavy jaw side-loads. What is not normal: a dry, notchy feel through the rotation, or grease only pushing out at part of the bearing circumference instead of the whole perimeter. That pattern means grease is not reaching the full raceway. The standard fix routine is full-circle greasing - inject, rotate roughly a quarter turn, inject again, repeat all the way around - on a short interval for dusty demolition duty, well shorter than a bucket pin schedule. If drag or drift persists after a proper full-circle greasing, have your dealer verify the rotation bearing and motor before it's run under load again.
What hydraulic problems show up around the rotator and jaw cylinder over time?
Weeping at the rotary swivel/manifold and at the jaw cylinder rod seals is the common complaint once a tool has real production hours on it, mostly from cycling under shock loads like crunching rebar or a hard jaw slam-shut. Hose routing across the rotating joint is a known weak point - hoses run in a fixed loop crack or pull fittings loose as the head spins, which is why swiveling elbow fittings at the cylinder ports are a common field fix to stop repeat hose failures. Any hose showing bulging, chafing, or a wet sheen near a fitting should be replaced, not clamped or taped - have your dealer verify hose routing and fitting torque if leaks keep coming back at the same spot.
Does the VT40 need matched hydraulic flow and pressure from the carrier, or will any 20-35 ton excavator run it as-is?
The tool is sized for the 20-35 tonne excavator class and needs the carrier's auxiliary circuit set up for two-way, double-acting flow to both jaw ports - the same type of circuit a thumb or shear needs, not the one-way circuit used for a breaker. Running it on a circuit with mismatched flow or pressure shows up as slow or weak jaw closing, or oil running hot under sustained cycling. Matching the excavator's high-flow auxiliary circuit to the tool's rated flow and pressure window, and confirming the coupler-side plumbing is wired for double-acting operation, is treated as a basic setup step before first use rather than something to sort out later.
Can shear jaws and pulverizer jaws run on the same VT40 body?
Yes, that is the point of a combi/multi-processor design. The rotator and body stay on the carrier and the jaw set bolts or pins on separately, so a crew keeps a shear jaw on hand for structural steel and cable and a pulverizer jaw for concrete and rebar separation, swapping between them in the field with standard hand tools rather than running two dedicated attachments. Jaw changes on this class of tool are generally a short job, not a shop visit, provided the jaw locking pins and mounting faces are in good condition.
What causes uneven or premature wear on the coupler mounting side of the VT40?
The CW45-class coupler interface takes constant shock load from every jaw closure and rotation, so play develops at the coupler pins and bushings faster than on a bucket doing digging work. Owners check this with a pry bar at the coupler mount and jaw pivot pins, looking for visible movement rather than relying on feel alone. Left unchecked, worn pins and bushings let the tool shift slightly under load, which accelerates wear at the pivot bores themselves and can throw off cutting alignment between the blades.
What should I check on a used VT40 before buying it?
Cycle the jaws fully open and closed and watch for a widening gap between the tips when closed - that is worn blade/tip material. Check pin and bushing play at the jaw pivot and at the coupler mount with a pry bar; looseness there points to bushing or bore work, not just a pin swap. Rotate the head slowly through the full 360 degrees and feel for notchy spots, hesitation, or drift that will not hold an angle under load, which flags bearing wear. Inspect every hose, especially at the rotating joint, for cracking, chafing, or prior swivel-fitting repairs, and look over the jaw structure and frame for welds or patches that suggest earlier overload cracking. A unit with documented grease intervals and jaw/tip change history is worth more than one with no records. Given the safety stakes of a cracked jaw structure or a worn rotation bearing under load, have your dealer verify structural and bearing condition before putting a used unit into full production work.
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 VT40. Related factory variants of the same model family:
VT40
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