Caterpillar P25
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar P25 is a passive hydraulic pulverizer attachment, not a self-powered machine. It has no engine, no ECM, and no hydraulic reservoir of its own; it mounts to a carrier excavator in roughly the 20-33 metric ton (22-36 US ton) class and draws all hydraulic power from the carrier's auxiliary circuit. It belongs to Caterpillar's legacy pulverizer lineup alongside the P16, P20, P28, P40, and P60, sharing a common factory operation and maintenance manual (Form GEBP0035) across the family. The P25 uses fixed, welded crushing teeth rather than bolt-on or swap jaw kits, and is offered with either a pin-on mounting bracket keyed to the carrier's linkage grade or a bracket configured for quick-coupler-equipped excavators. No published operating weight or dimensional data survives for this discontinued model; Caterpillar no longer lists it on current product pages.
Across the P16-P60 family, differences between models are mainly jaw opening size and carrier weight class rather than any change in operating principle: each unit is a simple hydraulic clamping jaw with a fixed frame, no rotation motor as standard, and no independent power source. The P25 sits mid-family, sized for mid-size demolition and concrete-processing excavators. Because these units carry no engine, transmission, or electronics, their used-market value and service life hinge almost entirely on structural and wear condition: jaw tooth wear, pin-and-bushing play, cylinder condition, and bracket integrity. Confirmed by its serial prefix 2LW00001-UP, the P25 remains a straightforward, mechanically simple attachment in the secondary and parts market, valued for teeth that can be weld-rebuilt in the field rather than replaced, and for compatibility with a broad range of mid-size carrier excavators already in service.
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 P25 specifications
Identity
| Type | Passive hydraulic pulverizer/demolition-jaw attachment for excavators. Mounts on the carrier boom or stick and runs entirely off the carrier's own hydraulic system. It carries no engine or independent power source. |
| Family | Part of the Caterpillar P16, P20, P25, P28, P40 and P60 pulverizer line, a legacy attachment series covered under a shared parts and operation-and-maintenance manual set. Distinct from the later P115-P140 mechanical pulverizer line and from the current P200/P300 series secondary/primary pulverizers. |
| Serial number prefix | 2LW |
Weights
| Operating weight | Not published in available Cat literature for this legacy attachment. Confirm with a Cat dealer using the unit's serial number before planning a carrier lift or transport. |
Dimensions
| Transport length/width/height, jaw opening | Not documented in available Cat literature for this model. Request current dimensional data from a Cat dealer using the unit's serial number. |
Performance
| Crushing/pulverizing output, cycle time | As a passive attachment, output depends on the host excavator's hydraulic flow and pressure rather than a self-rated performance figure. No published force or cycle-time specification was found for this model. |
Service capacities (summary)
| Hydraulic system | No dedicated reservoir or pump. The attachment operates directly off the host excavator's hydraulic circuit through quick-connect couplers; fluid type and capacity follow the carrier machine's own hydraulic specification. |
| Fuel, engine oil, coolant | Not applicable. The P25 has no engine of its own. |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
P25 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Hydraulic system | Not applicable — no onboard reservoir, pump, or oil charge. The P25 pulverizer jaw cylinder and rotation (gerotor) motor run entirely off the carrier excavator's auxiliary hydraulic circuit and draw from that machine's own tank. | Use the hydraulic oil specified in the host excavator's own operation and maintenance manual — typically Cat HYDO Advanced or an equivalent anti-wear hydraulic oil, viscosity graded to ambient temperature per the carrier's own chart. Confirm flow and pressure settings match the carrier's auxiliary circuit before hookup; the pulverizer itself has no separate fill point. |
| Grease points — jaw pivot pin, cylinder rod-end pins, mounting/frame pins and bushings, and rotator swivel bearing (where fitted) | Apply at each fitting until fresh grease purges from the joint; no fixed fill volume is specified for this class of work tool. | Cat multipurpose chassis grease with at least 5% molybdenum disulfide (moly) for the high-load pin-and-bushing joints, matching Cat's standard 5-moly-type grease used across its pulverizer, grapple, and quick-coupler work-tool line. Standard ambient ranges call for NLGI 2; sustained cold-weather operation calls for the lighter NLGI 1 (or an Arctic-rated Cat grease) instead. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar P25 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 50 h |
|
| Every 250 h |
|
Servicing the P25 beyond the schedule
Predictive Maintenance & Fluid Analysis
The P25 has no engine oil, hydraulic reservoir, or coolant to sample, so predictive maintenance centers on trend-tracking wear rather than fluid analysis. Log jaw tooth thickness and pin-bushing clearance at each interval to project when weld build-up or bushing replacement will be due. Watch grease purge at each zerk for contamination or discoloration, which signals a failing pin seal. Rising hose weep or cylinder drift during a shift is the earliest warning of internal cylinder wear.
Corrective & Common Repairs
Most P25 repairs are mechanical, not hydraulic-system work. Cracked or worn crushing teeth are corrected by weld build-up rather than parts replacement, matching the base jaw profile before wear reaches the field limit. Worn pivot pins and bushings are pressed out and replaced as a set to restore proper jaw alignment and prevent side-load wear. Leaking hoses or fittings at the bracket interface are the most common field failure and are addressed by replacing the hose assembly and reseating fittings to the carrier's auxiliary circuit.
Overhaul & Rebuild Points
A full P25 overhaul focuses on the jaw pivot, cylinder pin bores, and mounting bracket. Pivot pins and bushings are rebuilt or replaced once play exceeds serviceable limits to prevent frame elongation. Crushing teeth reaching their weld-build-up wear limit are rebuilt in stages rather than swapped, preserving the jaw's original geometry. Where fitted, the rotator swivel bearing is inspected and repacked or replaced during overhaul. Structural welds on the jaw frame and bracket are checked for fatigue cracking before returning the unit to service.
Seasonal & Environment Servicing
In cold climates, switch grease at all P25 pin points to NLGI 1 or an Arctic-rated multipurpose grease so it flows properly through the fittings at startup temperatures. In demolition or high-dust environments, shorten the grease interval since abrasive material accelerates pin and bushing wear and displaces grease faster than in cleaner applications. Before extended outdoor storage, fully grease all points and retract the cylinder to minimize rod exposure to moisture and debris that can pit the rod surface.
P25 attachments & work tools
Mounting / coupler systems
This legacy jaw ships as a direct pin-on tool with a mounting bracket keyed to the carrier's own linkage grade, plus a separate bracket kit for excavators already fitted with a pin-grabber/quick-coupler. There is no bolt-on interchangeable-jaw coupler system like Caterpillar's later Multi-Processor line.
Carrier compatibility / size class
Factory fitment data ties the P25 to excavators in roughly the 20 to 33 metric ton (about 22 to 36 US ton) class, with separate linkage/bracket grades matched to specific carrier models across that range. It sits in the small-to-mid position of the six-model P16/P20/P25/P28/P40/P60 pulverizer line, which scales up through P28, P40 and P60 for progressively larger carriers and down through P16/P20 for smaller ones.
Interchangeable jaw / tip options
The P25 uses fixed crushing teeth welded into the jaw rather than swappable bolt-on jaw sets; this family does not offer separate shear-jaw or secondary-pulverizer-jaw kits the way later Cat Multi-Processor attachments do. Worn teeth are field-rebuilt once the profile wears down about 13 mm (0.5 in) by preheating and weld-building the tooth rather than replacing a jaw assembly.
Hydraulic flow / pressure requirements
No standalone flow or pressure figures are published for the P25. It runs off the carrier excavator's own auxiliary/work-tool hydraulic circuit through an integral cylinder group, with connecting-hose kits sized to the specific carrier's boom and stick length rather than one universal spec.
Notable factory configurations
Documented configurations vary by carrier linkage and stick length rather than by jaw style: separate connecting-line and bracket kits exist for different stick-length options on the same carrier family, and a distinct kit exists for coupler-mounted versus direct pin-on installs.
All P25 assemblies by section
Every catalogued assembly group for the Caterpillar P25. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Frame And Body
160-9074 Housing Gp-Pulverizer
| 14***79 | Bolt; (M20x2.5x100-mm) | 30 |
| 14***67 | Cover | 1 |
| 14***04 | Gear & Bearing Group | 1 |
160-9076 Housing Gp-Pulverizer
| 10***76 | Seal-Dust | 0 |
| 14***79 | Bolt; (M20x2.5x100-mm) | 42 |
| 14***06 | Bolt-Socket Head; (M20x2.5x140-mm) | 36 |
160-9075 Housing Gp-Pulverizer
| 14***79 | Bolt; (M20x2.5x100-mm) | 30 |
| 14***10 | Guard | 1 |
| 14***63 | Bolt; (M12x1.75x16-mm) | 2 |
145-0678 Housing Gp-Pulverizer
| 14***07 | Plate | 1 |
| 14***79 | Bolt; (M20x2.5x100-mm) | 30 |
| 14***73 | Plate | 2 |
145-0622 Housing Gp-Pulverizer
| 14***22 | Housing Group-Pulverizer | 1 |
| 14***61 | Housing | 1 |
| 14***62 | Arm As-Crushing | 1 |
145-3479 Housing Gp-Pulverizer
| 14***79 | Bolt; (M20x2.5x100-mm) | 30 |
| 14***67 | Cover | 1 |
| 14***73 | Plate | 2 |
145-3520 Housing Gp-Pulverizer
| 14***79 | Bolt; (M20x2.5x100-mm) | 30 |
| 14***10 | Guard | 1 |
| 14***63 | Bolt; (M12x1.75x16-mm) | 2 |
160-9071 Housing Gp-Pulverizer
| 14***62 | Arm As-Crushing | 1 |
| 14***64 | Gear & Bearing Group | 1 |
| 14***65 | Pin As | 1 |
160-9073 Housing Gp-Pulverizer
| 14***07 | Plate | 1 |
| 14***79 | Bolt; (M20x2.5x100-mm) | 30 |
| 14***99 | Arm As-Crushing | 1 |
160-9323 Mounting Gp-Rotator Motor
| 09***74 | Bolt-Socket Head; (M12x1.75x65-mm) | 4 |
| 14***93 | Plate-Mounting | 1 |
| 15***18 | Lockwasher | 4 |
145-6253 Mounting Gp-Rotator Motor
| 14***63 | Lockwasher | 1 |
| 14***93 | Bolt; (M12x1.75x40-mm) | 1 |
| 14***80 | Gear-Planetary | 1 |
160-9324 Mounting Gp-Rotator Motor
| 09***74 | Bolt-Socket Head; (M12x1.75x65-mm) | 4 |
| 15***19 | Lockwasher | 8 |
| 16***75 | Plate-Mounting | 1 |
145-6156 Mounting Gp-Rotator Motor
| 14***63 | Lockwasher | 1 |
| 14***93 | Bolt; (M12x1.75x40-mm) | 1 |
| 14***56 | Mounting Group-Rotator Motor | 1 |
160-9325 Mounting Gp-Rotator Motor
| 09***73 | Bolt; (Socket Head) (M12x1.75x60mm) | 4 |
| 15***33 | Plate-Mounting | 1 |
| 15***19 | Lockwasher | 8 |
145-6183 Mounting Gp-Rotator Motor
| 14***63 | Lockwasher | 1 |
| 14***93 | Bolt; (M12x1.75x40-mm) | 1 |
| 14***80 | Gear-Planetary | 1 |
145-6230 Mounting Gp-Rotator Motor
| 14***63 | Lockwasher | 1 |
| 14***93 | Bolt; (M12x1.75x40-mm) | 1 |
| 14***80 | Gear-Planetary | 1 |
145-6438 Mounting Gp-Rotator Motor
| 14***63 | Lockwasher | 1 |
| 14***93 | Bolt; (M12x1.75x40-mm) | 1 |
| 14***80 | Gear-Planetary | 1 |
Hydraulic System
160-9117 Cylinder & Lines Gp-Pulverizer
| 14***29 | Mounting Group-Cylinder | 1 |
| 16***46 | Cylinder Group-Hydraulic | 2 |
| 16***05 | Lines Group-Cylinder | 1 |
160-9112 Cylinder & Lines Gp-Pulverizer
| 14***18 | Mounting Group-Cylinder | 1 |
| 15***18 | Cylinder Group-Hydraulic | 1 |
| 16***02 | Lines Group-Cylinder | 1 |
145-0679 Cylinder & Lines Gp-Pulverizer
| 14***79 | Cylinder & Lines Group-Pulverizer | 1 |
| 14***13 | Cylinder Group-Hydraulic | 1 |
| 14***18 | Mounting Group-Cylinder | 1 |
160-9115 Cylinder & Lines Gp-Pulverizer
| 14***55 | Mounting Group-Cylinder | 1 |
| 15***18 | Cylinder Group-Hydraulic | 2 |
| 16***04 | Lines Group-Cylinder | 1 |
145-3521 Cylinder & Lines Gp-Pulverizer
| 14***13 | Cylinder Group-Hydraulic | 2 |
| 14***21 | Cylinder & Lines Group-Pulverizer | 1 |
| 14***54 | Lines Group-Cylinder | 1 |
145-0623 Cylinder & Lines Gp-Pulverizer
| 14***23 | Cylinder & Lines Group-Pulverizer | 1 |
| 14***32 | Cylinder Group-Hydraulic | 1 |
| 14***37 | Mounting Group-Cylinder | 1 |
160-9110 Cylinder & Lines Gp-Pulverizer
| 14***37 | Mounting Group-Cylinder | 1 |
| 15***50 | Cylinder Group-Hydraulic | 1 |
| 16***00 | Lines Group-Cylinder | 1 |
160-9114 Cylinder & Lines Gp-Pulverizer
| 14***52 | Mounting Group-Cylinder | 1 |
| 15***18 | Cylinder Group-Hydraulic | 1 |
| 16***02 | Lines Group-Cylinder | 1 |
145-3480 Cylinder & Lines Gp-Pulverizer
| 14***13 | Cylinder Group-Hydraulic | 1 |
| 14***80 | Cylinder & Lines Group-Pulverizer | 1 |
| 14***52 | Mounting Group-Cylinder | 1 |
155-4018 Cylinder Gp-Hydraulic
| 03***25 | Ring-Backup | 2 |
| 08***48 | Ring | 1 |
| 09***31 | Seal-O-Ring | 1 |
145-0713 Cylinder Gp-Hydraulic
| 09***77 | Setscrew-Socket | 1 |
| 10***19 | Ring-Retaining | 4 |
| 14***45 | Bearing | 2 |
145-0632 Cylinder Gp-Hydraulic
| 09***77 | Setscrew-Socket | 1 |
| 10***19 | Ring-Retaining | 4 |
| 14***97 | Bolt-Socket Head; (M20x2.5x120-mm) | 14 |
160-8246 Cylinder Gp-Hydraulic
| 03***25 | Ring-Backup | 2 |
| 09***33 | Seal-O-Ring; (Id=209.30mm) | 1 |
| 10***86 | Ring-Retaining | 1 |
158-3050 Cylinder Gp-Hydraulic
| 03***25 | Ring-Backup | 2 |
| 08***91 | Ring-Backup | 1 |
| 09***28 | Seal-O-Ring | 1 |
168-2506 Lines Gp-Connecting
| 16***46 | Bar-Clamp | 2 |
| 16***06 | Lines Group-Connecting | 1 |
| 16***03 | Hose As | 2 |
169-9608 Lines Gp-Connecting
| 16***46 | Bar-Clamp | 2 |
| 16***07 | Hose As | 2 |
| 16***08 | Lines Group-Connecting | 1 |
168-8818 Lines Gp-Connecting
| 12***47 | Hose As | 2 |
| 16***46 | Bar-Clamp | 2 |
| 16***18 | Lines Group-Connecting | 1 |
169-3385 Lines Gp-Connecting
| 16***46 | Bar-Clamp | 2 |
| 16***85 | Lines Group-Connecting | 1 |
| 16***86 | Hose As | 2 |
196-7549 Lines Gp-Connecting
| 10***36 | Connector | 2 |
| 10***37 | Seal | 2 |
| 11***59 | Hose As | 2 |
168-2605 Lines Gp-Connecting
| 16***46 | Bar-Clamp | 2 |
| 16***05 | Lines Group-Connecting | 1 |
| 16***06 | Hose As | 2 |
169-5971 Lines Gp-Connecting
| 16***46 | Bar-Clamp | 2 |
| 16***71 | Lines Group-Connecting | 1 |
| 16***74 | Hose As | 2 |
169-9595 Lines Gp-Connecting
| 16***46 | Bar-Clamp | 2 |
| 16***90 | Clip; (Slot) | 2 |
| 16***91 | Clip; (Tab) | 2 |
169-8853 Lines Gp-Connecting
| 16***46 | Bar-Clamp | 2 |
| 16***53 | Lines Group-Connecting | 1 |
| 16***54 | Hose As | 2 |
168-2608 Lines Gp-Connecting
| 16***46 | Bar-Clamp | 2 |
| 16***08 | Lines Group-Connecting | 1 |
| 16***09 | Hose As | 2 |
160-9104 Lines Gp-Cylinder
| 09***04 | Bolt-Socket Head; (M12x1.75x110-mm) | 8 |
| 14***60 | Fitting | 4 |
| 14***25 | Hose As | 2 |
160-9100 Lines Gp-Cylinder
| 14***60 | Fitting | 2 |
| 14***54 | Hose As | 1 |
| 15***82 | Swivel Group | 1 |
160-9105 Lines Gp-Cylinder
| 09***04 | Bolt-Socket Head; (M12x1.75x110-mm) | 8 |
| 14***60 | Fitting | 4 |
| 14***25 | Hose As | 2 |
145-0722 Lines Gp-Cylinder
| 12***88 | Flange-Split | 12 |
| 14***60 | Fitting | 2 |
| 14***88 | Connector | 2 |
145-3553 Lines Gp-Cylinder
| 11***93 | Lockwasher | 2 |
| 13***30 | Bolt-Socket Head; (M12x1.75x40-mm) | 24 |
| 14***79 | Lockwasher | 24 |
160-9102 Lines Gp-Cylinder
| 14***60 | Fitting | 2 |
| 14***25 | Hose As | 1 |
| 15***82 | Swivel Group | 1 |
145-3554 Lines Gp-Cylinder
| 09***70 | Bolt-Socket Hd; (M12 X 1.75 X 45) | 24 |
| 09***04 | Bolt-Socket Head; (M12x1.75x110-mm) | 8 |
| 12***88 | Flange-Split | 12 |
145-0644 Lines Gp-Cylinder
| 11***93 | Lockwasher | 2 |
| 13***30 | Bolt-Socket Head; (M12x1.75x40-mm) | 16 |
| 14***79 | Lockwasher | 16 |
145-6255 Lines Gp-Motor
| 14***56 | Valve Group-Pressure Control | 1 |
| 14***61 | Accumulator | 2 |
| 14***25 | Plug | 3 |
145-6161 Lines Gp-Motor
| 14***56 | Valve Group-Pressure Control | 1 |
| 14***61 | Accumulator | 2 |
| 14***01 | Hose As | 1 |
145-6494 Lines Gp-Motor
| 14***56 | Valve Group-Pressure Control | 1 |
| 14***61 | Accumulator | 2 |
| 14***25 | Plug | 3 |
145-6187 Lines Gp-Motor
| 14***56 | Valve Group-Pressure Control | 1 |
| 14***61 | Accumulator | 2 |
| 14***25 | Plug | 3 |
160-6668 Lines Gp-Motor
| 11***30 | Hose As | 2 |
| 15***94 | Adapter As | 6 |
| 15***44 | Seal | 1 |
160-6670 Lines Gp-Motor
| 11***23 | Hose As | 2 |
| 15***94 | Adapter As | 6 |
| 15***44 | Seal | 1 |
160-6671 Lines Gp-Motor
| 13***83 | Hose As | 2 |
| 15***94 | Adapter As | 6 |
| 15***44 | Seal | 1 |
160-6669 Lines Gp-Motor
| 15***94 | Adapter As | 6 |
| 15***44 | Seal | 1 |
| 16***66 | Hose As | 2 |
145-6232 Lines Gp-Motor
| 14***56 | Valve Group-Pressure Control | 1 |
| 14***61 | Accumulator | 2 |
| 14***25 | Plug | 3 |
145-6439 Lines Gp-Motor
| 14***56 | Valve Group-Pressure Control | 1 |
| 14***61 | Accumulator | 2 |
| 14***25 | Plug | 3 |
160-9715 Motor & Lines Gp-Rotator
| 16***70 | Lines Group-Motor | 1 |
| 16***22 | Motor Group-Gerotor | 1 |
| 16***24 | Mounting Group-Rotator Motor | 1 |
145-0681 Motor & Lines Gp-Rotator
| 14***81 | Motor & Lines Group-Rotator | 1 |
| 14***53 | Motor Group-Gerotor | 1 |
| 14***83 | Mounting Group-Rotator Motor | 1 |
160-9716 Motor & Lines Gp-Rotator
| 16***71 | Lines Group-Motor | 1 |
| 16***23 | Motor Group-Gerotor | 1 |
| 16***25 | Mounting Group-Rotator Motor | 1 |
145-3523 Motor & Lines Gp-Rotator
| 14***23 | Motor & Lines Group-Rotator | 1 |
| 14***53 | Motor Group-Gerotor | 1 |
| 14***53 | Mounting Group-Rotator Motor | 1 |
145-0624 Motor & Lines Gp-Rotator
| 14***24 | Motor & Lines Group-Rotator | 1 |
| 14***53 | Motor Group-Gerotor | 1 |
| 14***56 | Mounting Group-Rotator Motor | 1 |
145-4021 Motor & Lines Gp-Rotator
| 14***21 | Motor & Lines Group-Rotator | 1 |
| 14***53 | Motor Group-Gerotor | 1 |
| 14***38 | Mounting Group-Rotator Motor | 1 |
160-9713 Motor & Lines Gp-Rotator
| 16***68 | Lines Group-Motor | 1 |
| 16***22 | Motor Group-Gerotor | 1 |
| 16***23 | Mounting Group-Rotator Motor | 1 |
145-3481 Motor & Lines Gp-Rotator
| 14***81 | Motor & Lines Group-Rotator | 1 |
| 14***53 | Motor Group-Gerotor | 1 |
| 14***30 | Mounting Group-Rotator Motor | 1 |
160-9714 Motor & Lines Gp-Rotator
| 16***69 | Lines Group-Motor | 1 |
| 16***22 | Motor Group-Gerotor | 1 |
| 16***24 | Mounting Group-Rotator Motor | 1 |
145-3667 Motor & Lines Gp-Rotator
| 14***67 | Motor & Lines Group-Rotator | 1 |
| 14***53 | Motor Group-Gerotor | 1 |
| 14***38 | Mounting Group-Rotator Motor | 1 |
164-7282 Motor Gp-Gerotor
| 16***82 | Motor Group-Gerotor | 1 |
| 16***59 | Key-Square | 1 |
| 16***24 | Nut-Hex; (1-1/4-18 Thd) | 1 |
145-6153 Motor Gp-Gerotor
| 14***53 | Motor Group-Gerotor | 1 |
| 14***54 | Key | 1 |
| 14***55 | Kit-Seal | 1 |
164-8351 Motor Gp-Gerotor
| 14***31 | Set-Rotor | 1 |
| 14***32 | Link-Drive | 1 |
| 16***51 | Motor Group-Gerotor | 1 |
160-9123 Motor Gp-Gerotor
| 09***66 | Bolt; (M8x1.25x75-mm) | 4 |
| 16***23 | Motor Group-Gerotor | 1 |
| 16***83 | Manifold | 1 |
160-9122 Motor Gp-Gerotor
| 09***66 | Bolt; (M8x1.25x75-mm) | 4 |
| 16***22 | Motor Group-Gerotor | 1 |
| 16***82 | Motor Group-Gerotor | 1 |
145-0718 Mounting Gp-Cylinder
| 14***42 | Plate | 2 |
| 14***18 | Mounting Group-Cylinder | 1 |
| 14***19 | Pin As | 1 |
145-0637 Mounting Gp-Cylinder
| 14***42 | Plate | 2 |
| 14***37 | Mounting Group-Cylinder | 1 |
| 14***38 | Pin As | 1 |
145-3552 Mounting Gp-Cylinder
| 14***42 | Plate | 2 |
| 14***40 | Spacer; (24.5-mm Lgx100.5-mm Dia) | 2 |
| 14***58 | Spacer; (4.5-mm Lgx100.5-mm Dia) | 2 |
145-3555 Mounting Gp-Cylinder
| 14***42 | Plate | 2 |
| 14***63 | Bolt; (M12x1.75x16-mm) | 4 |
| 14***55 | Mounting Group-Cylinder | 1 |
145-3629 Mounting Gp-Cylinder
| 14***07 | Plate | 2 |
| 14***63 | Bolt; (M12x1.75x16-mm) | 4 |
| 14***29 | Mounting Group-Cylinder | 1 |
144-1056 Valve Gp-Pressure Control
| 14***56 | Valve Group-Pressure Control | 1 |
| 14***88 | Connector | 2 |
| 17***54 | Valve Group-Relief | 2 |
179-1254 Valve Gp-Relief
| 17***54 | Valve Group-Relief | 1 |
| 6V***06 | Seal-Bonded | 1 |
| 6V***80 | Seal-O-Ring; (20.35mm Id) | 1 |
Service Equipment And Supplies
161-2667 Plate & Film Gp
| 10***89 | Film; (Stripe) (82cm) | 0 |
| 14***36 | Film-Warning; (Flying Debris) | 2 |
| 14***69 | Film-Warning; (Alert) | 2 |
161-2665 Plate & Film Gp
| 10***89 | Film; (Stripe) (82cm) | 0 |
| 14***36 | Film-Warning; (Flying Debris) | 2 |
| 14***69 | Film-Warning; (Alert) | 2 |
161-2666 Plate & Film Gp
| 10***89 | Film; (Stripe) (82cm) | 0 |
| 14***36 | Film-Warning; (Flying Debris) | 2 |
| 14***69 | Film-Warning; (Alert) | 2 |
161-2662 Plate & Film Gp
| 10***89 | Film; (Stripe) (82cm) | 0 |
| 14***36 | Film-Warning; (Flying Debris) | 2 |
| 14***69 | Film-Warning; (Alert) | 2 |
161-2664 Plate & Film Gp
| 10***89 | Film; (Stripe) (82cm) | 0 |
| 14***36 | Film-Warning; (Flying Debris) | 2 |
| 14***69 | Film-Warning; (Alert) | 2 |
Work Tool Arrangement
145-0677 Pulverizer Ar-Hydraulic
| 14***77 | Pulverizer Ar-Hydraulic | 1 |
| 14***78 | Housing Group-Pulverizer | 1 |
| 14***79 | Cylinder & Lines Group-Pulverizer | 1 |
145-3519 Pulverizer Ar-Hydraulic
| 14***19 | Pulverizer Ar-Hydraulic | 1 |
| 14***20 | Housing Group-Pulverizer | 1 |
| 14***21 | Cylinder & Lines Group-Pulverizer | 1 |
145-3478 Pulverizer Ar-Hydraulic
| 14***78 | Pulverizer Ar-Hydraulic | 1 |
| 14***79 | Housing Group-Pulverizer | 1 |
| 14***80 | Cylinder & Lines Group-Pulverizer | 1 |
145-0621 Pulverizer Ar-Hydraulic
| 14***21 | Pulverizer Ar-Hydraulic | 1 |
| 14***22 | Housing Group-Pulverizer | 1 |
| 14***23 | Cylinder & Lines Group-Pulverizer | 1 |
145-3592 Pulverizer Ar-Hydraulic
| 14***92 | Pulverizer Ar-Hydraulic | 1 |
| 14***96 | Tooth & Cutting Edge Group | 1 |
| 16***76 | Housing Group-Pulverizer | 1 |
Work Tools
156-3332 Bracket Gp-Mounting
| 09***79 | Nut; (M36x4.0 Thd) | 12 |
| 15***32 | Bracket Group-Mounting | 1 |
| 7Y***63 | Bolt; (M36x4x120-mm) | 12 |
183-7771 Bracket Gp-Mounting
| 18***71 | Bracket Group-Mounting | 1 |
| 18***96 | Bracket As | 1 |
| 7X***68 | Bolt; (M20x2.5x180-mm) | 1 |
148-5748 Bracket Gp-Mounting
| 14***48 | Bracket Group-Mounting | 1 |
| 14***49 | Bracket As | 1 |
| 7X***83 | Bolt; (M30x3.5x120-mm) | 12 |
169-6717 Bracket Gp-Mounting
| 16***17 | Bracket Group-Mounting | 1 |
| 16***19 | Bracket As | 1 |
| 7X***83 | Bolt; (M30x3.5x120-mm) | 12 |
144-2508 Bracket Gp-Mounting
| 14***07 | Bracket As | 1 |
| 14***08 | Bracket Group-Mounting | 1 |
| 7X***81 | Bolt-Plt; (M30 X 3.5 X 100) | 12 |
147-8801 Bracket Gp-Mounting
| 14***01 | Bracket Group-Mounting | 1 |
| 14***09 | Bracket As | 1 |
| 7X***83 | Bolt; (M30x3.5x120-mm) | 12 |
149-0939 Bracket Gp-Mounting
| 14***39 | Bracket Group-Mounting | 1 |
| 14***40 | Bracket As | 1 |
| 7X***83 | Bolt; (M30x3.5x120-mm) | 12 |
208-5144 Bracket Gp-Mounting
| 20***43 | Bracket As | 1 |
| 20***44 | Bracket Group-Mounting | 1 |
| 7X***82 | Bolt; (M30x3.5x110-mm) | 12 |
145-9070 Bracket Gp-Mounting
| 14***70 | Bracket Group-Mounting | 1 |
| 7X***83 | Bolt; (M30x3.5x120-mm) | 12 |
| 8C***22 | Nut (M30 X 3.50 Thd) | 12 |
147-8795 Bracket Gp-Mounting
| 14***95 | Bracket Group-Mounting | 1 |
| 14***03 | Bracket As | 1 |
| 7X***83 | Bolt; (M30x3.5x120-mm) | 12 |
158-1290 Bracket Gp-Mounting
| 15***90 | Bracket Group-Mounting | 1 |
| 15***83 | Bracket As | 1 |
| 7X***83 | Bolt; (M30x3.5x120-mm) | 12 |
147-8802 Bracket Gp-Mounting
| 14***02 | Bracket Group-Mounting | 1 |
| 14***12 | Bracket As | 1 |
| 7X***83 | Bolt; (M30x3.5x120-mm) | 12 |
155-3059 Bracket Gp-Mounting
| 09***79 | Nut; (M36x4.0 Thd) | 12 |
| 15***59 | Bracket Group-Mounting | 1 |
| 7Y***63 | Bolt; (M36x4x120-mm) | 12 |
145-9066 Bracket Gp-Mounting
| 14***66 | Bracket Group-Mounting | 1 |
| 7X***83 | Bolt; (M30x3.5x120-mm) | 12 |
| 8C***22 | Nut (M30 X 3.50 Thd) | 12 |
145-9065 Bracket Gp-Mounting
| 14***65 | Bracket Group-Mounting | 1 |
| 7X***83 | Bolt; (M30x3.5x120-mm) | 12 |
| 8C***22 | Nut (M30 X 3.50 Thd) | 12 |
145-0727 Bracket Gp-Mounting
| 14***27 | Bracket Group-Mounting | 1 |
| 14***89 | Bracket As | 1 |
| 7X***81 | Bolt-Plt; (M30 X 3.5 X 100) | 12 |
145-9071 Bracket Gp-Mounting
| 14***71 | Bracket Group-Mounting | 1 |
| 7X***83 | Bolt; (M30x3.5x120-mm) | 12 |
| 8C***22 | Nut (M30 X 3.50 Thd) | 12 |
150-0042 Bracket Gp-Mounting
| 15***42 | Bracket Group-Mounting | 1 |
| 15***43 | Bracket As | 1 |
| 7X***83 | Bolt; (M30x3.5x120-mm) | 12 |
145-9068 Bracket Gp-Mounting
| 14***68 | Mounting Group-Crusher | 1 |
| 14***08 | Bracket As | 1 |
| 7X***83 | Bolt; (M30x3.5x120-mm) | 12 |
145-3524 Tooth & Cutting Edge Gp
| 14***15 | Screw-Flat Head; (M20x2.5x100-mm) | 6 |
| 14***24 | Tooth & Cutting Edge Group | 1 |
| 14***84 | Tooth-Crushing | 21 |
145-0625 Tooth & Cutting Edge Gp
| 14***25 | Tooth & Cutting Edge Group | 1 |
| 14***26 | Tooth-Crushing | 15 |
| 14***29 | Shim; (.3mm Thk) | 1 |
145-3482 Tooth & Cutting Edge Gp
| 14***35 | Bolt; (M16x2x80-mm) | 6 |
| 14***35 | Tooth-Crushing | 21 |
| 14***82 | Tooth & Cutting Edge Group | 1 |
145-3596 Tooth & Cutting Edge Gp
| 14***87 | Screw-Flat Head | 21 |
| 14***84 | Tooth-Crushing | 21 |
| 14***86 | Shim; (.5mm Thk) | 1 |
145-0683 Tooth & Cutting Edge Gp
| 14***83 | Tooth & Cutting Edge Group | 1 |
| 14***35 | Tooth-Crushing | 15 |
| 14***37 | Shim; (0.3-mm Thk) | 1 |
P25 serial number reference
The PIN/serial plate on this pulverizer attachment is riveted or stamped to the main frame or mounting bracket near the pivot/cylinder housing, not on a cab or engine since the unit has no power source of its own. The plate reads as an 8-character serial: a 3-character prefix identifying the specific model build followed by a sequential unit number. Match the 3-character prefix against the model's parts manual serial-range table to confirm which configuration and parts breakdown applies before ordering components.
| Prefix | Identifies | Notes |
|---|---|---|
| 2LW | P25 hydraulic pulverizer (work tool attachment) | Documented in the combined P16, P20, P25, P28, P40 and P60 pulverizer parts book as the P25-specific serial prefix, starting from the lowest unit in that range and continuing upward. Covers the hydraulic pulverizer jaw assembly, cylinder group, and mounting/frame group built under the P25 designation. This is a passive hydraulically actuated attachment with no engine or ECM of its own, so the prefix identifies the work tool assembly and its build sequence rather than a powered machine. |
Frequently asked questions
What is the Caterpillar P25?
The P25 is a passive hydraulic pulverizer (demolition jaw) attachment for excavators, part of Caterpillar's legacy P16-P60 pulverizer family. It has no engine or ECM of its own; it is powered entirely by the carrier excavator's auxiliary hydraulic circuit.
What are the P25's operating specs?
Caterpillar has not published operating weight or dimensional specifications for this discontinued attachment. Its confirmed serial prefix range is 2LW00001-UP. Because it has no engine or independent hydraulic system, it carries no fluid capacities, horsepower, or fault code specifications.
What carrier excavators and configurations does the P25 fit?
The P25 is sized for excavators in roughly the 20-33 metric ton (22-36 US ton) class. It is available with a pin-on mounting bracket keyed to the carrier's linkage grade or with a bracket configured for quick-coupler-equipped excavators, and uses fixed welded crushing teeth rather than swap-jaw kits.
What P25 owners discuss
What wears fastest on a P25 pulverizer jaw in day-to-day demolition work?
How do you know the pivot pins and bushings need attention?
Is the P25 a rotating pulverizer or a fixed pin-on jaw?
What hydraulic problems come up most on an attachment like this?
Any quirks specific to the mechanical design of these older Cat pulverizers?
What should someone check before buying a used P25?
Is there much dedicated community discussion specific to the P25 badge?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Need a specific P25 part?
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