Caterpillarwork toolcold planer

Caterpillar PC205

Maintenance schedule, common problems & OEM parts breakdown

The Cat PC205 is a high-flow, hydraulically driven cold-planer work tool, a passive attachment rather than a self-propelled machine, built for skid steer loaders, multi-terrain loaders, compact track loaders, compact wheel loaders, and backhoe loaders with a high-flow hydraulic circuit. It carries no engine or ECM of its own; a radial-piston motor mounted on the drum housing draws power directly from the carrier's hydraulics. Operating weight runs roughly 730-750 kg (1,609-1,654 lb) depending on series and bit package. Caterpillar sold two generations sharing the same 450 mm (18 in) drum class: the original PC205 (fixed drum speed near 220 rpm, aimed at older high-flow carriers) and the updated PC205B (variable 142-250 rpm drum speed through its radial-piston motor, built around current high-flow skid steer and compact-track-loader platforms). Configurations include standard all-purpose conical bits with an optional concrete-duty bit, narrower interchangeable drum segments down to about 80 mm (3 in) for utility trenching, and, on the PC205B, hydraulic sideshift with a tilt range of roughly plus-or-minus 8.5 degrees for edge work.

The PC205B's upgrade over the base PC205 is mostly about control, not raw cutting capacity: swapping the fixed-speed drive for a variable-speed radial-piston motor lets the operator match drum speed to asphalt or light concrete, while mechanical, self-leveling independent left/right depth control holds the cut level without constant carrier re-adjustment. Both generations share the same 450 mm working width and roughly 150 mm (5.9-6 in) maximum cutting depth, so the drum, bits, and bearing housing are largely interchangeable service items across the family. Don't confuse either one with the standard-flow PC204, a separate sibling model that happens to share the 450 mm drum size but carries its own identity and is not a PC205 predecessor. Because the PC205/PC205B footprint fits the same wedge-style quick-coupler used across Cat's compact work-tool line, it remains a common used-market pickup for contractors doing patch repair, utility-trench milling, and curb or edge work who already run a compatible high-flow carrier. Parts commonality with the wider PC-series drum family keeps bits, bearings, and drive motors reasonably easy to source secondhand.

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 PC205 specifications

Engine

Power source	No onboard engine. The drum is driven hydraulically off the carrier machine's auxiliary hydraulic circuit through a variable-speed, radial-piston (piston) motor with planetary drive.
Emissions tier	Not applicable. The work tool carries no engine or ECM; emissions compliance is set by the host carrier, not the planer.

Weights

Operating weight (PC205 base series)	750 kg (1,654 lb)
Operating weight (PC205B high-flow series)	730 kg (1,609 lb)
Shipping weight	Not separately published; use operating weight above for transport planning.
Ground pressure	Not published for this work tool.

Dimensions

Overall width	1,720-1,730 mm (68-68.1 in), consistent across base and B-series
Overall length	1,180-1,184 mm (46-46.6 in)
Overall height	990 mm (39 in) on the base PC205; 1,080 mm (42.5 in) on the PC205B high-flow series — varies by series
Maximum drum (working) width	450 mm (18 in), unchanged across series
Side shift travel	650 mm (25.6-26 in)
Tilt angle range	±8.5 degrees, self-leveling — documented for the PC205B high-flow series

Performance

Maximum cutting depth	150 mm (6 in), consistent across base and B-series
Drum speed	220 rpm fixed on the base PC205; 142-250 rpm variable on the PC205B high-flow series — varies by series
Optimum hydraulic flow	80-125 L/min (21-33 gpm) on the base PC205; 80-117 L/min (21-31 gpm) on the PC205B high-flow series — varies by series/source
Optimum hydraulic pressure	160-300 bar on the base PC205; 160-240 bar (2,320-3,480 psi) on the PC205B high-flow series — varies by series
Required carrier hydraulics	High-flow circuit, or standard-flow circuit with case drain connection and a minimum flow of 80 L/min (21 gpm)
Carrier compatibility	Skid steer loaders, compact track loaders, multi-terrain loaders, compact wheel loaders, and backhoe loaders with a compatible high-flow or standard-flow (with case drain) hydraulic circuit
Standard bit type	All-purpose conical bits; concrete-duty bit option available

Service capacities (summary)

Fuel tank	Not applicable — no onboard fuel system.
Hydraulic system	No independent reservoir. The planer runs off the carrier machine's own hydraulic system; use the fluid type and capacity specified for the host carrier.
Engine oil	Not applicable — no engine.
Cooling system	Not applicable — no engine; heat load is absorbed by the carrier's hydraulic cooling circuit.

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

PC205 fluids & capacities

System	Capacity	Recommended fluid
Grease points (drum bearing housings, motor coupling, pivot points)	Not documented as a measured volume in available OMM excerpts; grease applied per fitting until purge, not by a chart quantity	Cat Multipurpose Grease (Cat MPGM), NLGI grade 2, lithium-complex base; no separate cold/hot-climate viscosity split published for this attachment
Hydraulic drive system	No independent reservoir; the PC205 runs on the carrier machine's hydraulic circuit at an optimum flow in the 60-117 L/min (16-31 gpm) range depending on carrier and configuration - fill/capacity and fluid spec follow the host skid steer, compact track loader, compact wheel loader, or backhoe loader's own OMM, not a PC205-specific chart	Per carrier machine OMM (not a PC205-specific fluid recommendation)

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

Caterpillar PC205 maintenance schedule

Service interval	Tasks
Every 50 h	Inspect drum bits/tool holders for wear, chipping, or missing tips; replace worn bits before the holder itself wears Check the drum housing, moldboard, and side-plate wear skis for damage or abnormal wear Inspect hydraulic hoses, quick-couplers, and fittings on the attachment for leaks, abrasion, or loose connections Grease the drum bearing housings and depth-skid/sideshift pivot points with Cat Multipurpose Grease until purge Clear packed asphalt or concrete spoil from the moldboard and discharge area Confirm the quick-coupler pins and locks are fully engaged before use
Every 250 h	Inspect the radial-piston drive motor mounting bolts and coupling for looseness or wear Check drum bearing seals for grease leakage or contamination Inspect and rotate or replace side-plate wear skis and moldboard skids Check the motor's case-drain line and fitting for restriction or leakage Torque-check drum tool-holder and drum-segment retaining hardware
Every 500 h	Sample the carrier's hydraulic oil for water content, metal fines, and additive condition Inspect the drive motor for external leakage and shaft-seal wear Check drum bearing end-play; adjust or service per specification Inspect the mechanical depth-control linkage, and the self-leveling mechanism on PC205B, for wear or binding On PC205B, inspect the sideshift rail and cylinder for play, leakage, or wear
Every 1,000 h	Remove the drum and inspect internal bearings and seals; replace any showing wear or contamination Inspect the drive-motor coupling and spline for wear; replace if scored or loose Inspect the drum shell and tool-holder pockets for cracking or wear beyond service limits Inspect the mounting frame and coupler wear plates for structural wear Verify carrier hydraulic flow and pressure at the attachment still match the specified range
Every 2,000 h	Rebuild or replace the drum bearing housing assembly if end-play or seal wear exceeds limits Overhaul or exchange the drive motor if case-drain flow or output torque has drifted out of spec Inspect the complete hydraulic hose and fitting set; replace hoses approaching their service-life limit Evaluate the frame, moldboard, and sideshift structure for fatigue cracking; repair or replace as needed On PC205B, recheck self-leveling depth-control accuracy across the full drum width
Every 3,000 h	Perform a full drum assembly rebuild covering bearings, seals, tool holders, and shell condition Replace the hydraulic drive motor at end of rated service life or after repeat case-drain/torque failures Replace the complete moldboard and side-plate wear package once base metal wear is evident Recondition or replace the coupler mounting frame if wear exceeds tolerance for a secure attachment fit

Servicing the PC205 beyond the schedule

Predictive Maintenance & Fluid Analysis

The PC205 has no engine oil or coolant to sample; predictive care means watching the carrier's hydraulic fluid and the drum's own wear points. Pull periodic samples from the host skid steer or track loader's hydraulic reservoir to catch water intrusion, metal fines shed by the radial-piston motor, or additive breakdown before they reach the drive motor. Track case-drain flow off the motor since a rising trend flags internal wear ahead of a torque loss. Check drum-bearing grease condition at each purge interval for early seal leakage.

Corrective & Common Repairs

Most PC205 downtime starts at the drum, not the carrier. Chipped, dull, or missing conical bits are the most frequent fix; inspect tool holders daily on abrasive concrete work and swap bits before the holder wears. Radial-piston motor coupling wear or a leaking shaft seal shows up as lost cutting torque or oil weeping at the motor face, so replace the coupling before it scores the spline. On PC205B units, a worn sideshift cylinder or binding depth-control linkage causes uneven cut depth; service the linkage instead of compensating through the carrier's controls.

Overhaul & Rebuild Points

Major PC205 rebuilds center on the drum bearing housing and the radial-piston drive motor. Once bearing end-play or seal leakage exceeds service limits, pull the drum, replace bearings and seals as a set, and check the shell and bit-holder pockets for cracking or oversize wear. Rebuild or exchange the drive motor when case-drain flow or output torque drifts out of spec rather than running it to failure and risking a scored drum shaft. On PC205B, verify the self-leveling linkage and sideshift travel after any drivetrain rebuild.

Seasonal & Environment Servicing

Cold starts are a carrier problem, not a PC205 problem: let the host machine's hydraulic oil reach operating temperature before engaging the high-flow circuit, since cold, thick oil starves the radial-piston motor and spikes case-drain pressure. In hot, dry milling, run the optional water-spray kit to suppress dust and cool the bits, checking nozzles for clogging and hose routing before each shift. Before winter storage, drain the water-kit lines and tank completely to prevent freeze-cracking, and grease every exposed drum-bearing and sideshift pivot to purge trapped moisture.

PC205 attachments & work tools

Carrier compatibility

Fits Cat skid steer loaders, multi-terrain loaders, compact track loaders, compact wheel loaders and backhoe loaders equipped with a high-flow hydraulic circuit. The base PC205 lines up with older Cat carriers such as the 226B, 242B, 257B, 246C, 256C and 262C series; the updated PC205B targets current high-flow platforms including the 226B3-family skid steers and compact track loaders.

Coupler and mounting system

Mounts through Cat's standard mechanical and hydraulic quick-coupler interface, using the opposing-wedge design shared across the Cat work-tool line for fast, in-cab tool changes. No separate adapter plate is documented as a factory option for this size class.

Hydraulic flow and pressure requirement

Requires a high-flow hydraulic circuit; optimal flow runs around 80-117 L/min (21-31 gpm) with operating pressure roughly 160-240 bar (2320-3480 psi), varies by configuration and carrier. The base PC205 calls for the carrier's High Flow or High Flow XPS package, while the PC205B is built specifically around the standard high-flow option.

Drum width and cutting depth

Standard drum width is 450mm (18in) with maximum cutting depth around 150mm (5.9-6in), figures vary slightly by source and configuration. Narrower optional drums down to about 80mm (3in) are offered for trenching or striping work within this size class.

Drum speed and bit type

Drum speed is variable, roughly 142-250 rpm, driven directly by a radial-piston motor rather than a chain or gear reduction. Standard bits are all-purpose conical carbide tips suited to both asphalt and light concrete removal; alternate bit patterns are offered for specific material types.

Sideshift and tilt

The PC205B adds hydraulic sideshift, roughly 650mm (25.6in) of lateral travel, for planing tight to curbs and walls, plus a tilt range of about +/-8.5 degrees for feathered edges. These powered steering functions are part of the B-series upgrade; not confirmed as standard on the base PC205.

Independent depth control

Independent left/right depth control lets the operator set milling depth on each side of the drum separately. In this size class (PC104B-PC205B) the adjustment is mechanical/screw-type; hydraulic independent depth control is reserved for the larger PC305B-PC412B cold planers.

Water kit / dust suppression

A water-spray kit is available as a factory option for dust suppression and drum cooling, feeding a spray arrangement at the drum housing. It draws from an external water supply or carrier-mounted tank and is not standard equipment.

Series generations

PC205 and PC205B share the same 450mm (18in) drum class but are distinct generations: the original PC205 targets older high-flow Cat carriers, while the PC205B is the current design for high-flow skid steer, compact track loader and compact wheel loader platforms, adding sideshift and tilt over the base model.

All PC205 assemblies by section

Every catalogued assembly group for the Caterpillar PC205. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Frame And Body

224-7393 Frame Ar

22***67	Drive Group-Cold Planer	1
22***68	Control Group-Cold Planer	1
22***69	Frame Group-Cold Planer; -Front	1
22***33	Adjustment Group-Depth	1

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224-7365 Frame Ar

22***67	Drive Group-Cold Planer	1
22***68	Control Group-Cold Planer	1
22***69	Frame Group-Cold Planer; -Front	1
22***33	Adjustment Group-Depth	1

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219-5450 Frame Ar

21***10	Frame Group-Cold Planer; -Rear	1
21***15	Control Group-Cold Planer	1
21***20	Drum Group-Cold Planer	1
21***25	Drive Group-Cold Planer	1

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224-7388 Frame Ar

22***82	Frame Group-Cold Planer; -Rear	1
22***83	Control Group-Cold Planer	1
22***84	Drum Group-Cold Planer	1
22***86	Drive Group-Cold Planer	1

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224-7394 Frame Ar

22***60	Drum Group-Cold Planer	1
22***61	Control Group-Cold Planer	1
22***62	Frame Group-Cold Planer; -Rear	1
22***63	Drive Group-Cold Planer	1

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224-7382 Frame Gp-Cold Planer -Rear

21***90	Frame As	1
21***16	Spacer; (21x65x5-mm Thk)	2
22***19	Plate-Clamp	1
22***70	Plate-Guide	4

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219-5410 Frame Gp-Cold Planer -Rear

21***90	Frame As	1
21***94	Plate-Guide	4
21***95	Plate-Clamp	2
21***96	Plate-Spacer	2

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224-7387 Frame Gp-Cold Planer -Front

09***70	Bolt-Socket Hd; (M12 X 1.75 X 45)	6
09***16	Ring-Retaining	2
21***03	Plate	2
21***14	Plate-Indicator	1

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220-4769 Frame Gp-Cold Planer -Front

09***70	Bolt-Socket Hd; (M12 X 1.75 X 45)	6
09***16	Ring-Retaining	2
21***03	Plate	2
22***69	Frame Group-Cold Planer; -Front	1

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224-7364 Frame Gp-Cold Planer -Front

09***70	Bolt-Socket Hd; (M12 X 1.75 X 45)	6
09***16	Ring-Retaining	2
21***03	Plate	2
21***14	Plate-Indicator	1

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224-7362 Frame Gp-Cold Planer -Rear

21***90	Frame As	1
21***16	Spacer; (21x65x5-mm Thk)	2
22***15	Plate-Guide	4
22***16	Plate-Clamp	2

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219-5430 Frame Gp-Cold Planer -Front

09***70	Bolt-Socket Hd; (M12 X 1.75 X 45)	6
17***11	Locknut; (M16x2-Thd)	10
21***85	Frame As	1
21***86	Cover	1

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232-2327 Spring & Mtg Gp-Leveler -Mounting

23***64	Spring Group-Leveler	1
23***27	Spring & Mtg Group-Leveler; -Mounting	1
6V***06	Fitting-Grease	2
6V***54	Ring; (Retaining)	2

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Hydraulic System

219-5433 Cylinder & Mtg Gp-Cold Planer -Depth

21***21	Cylinder Group-Hydraulic	2
21***23	Pin	3
21***24	Bushing	6
21***26	Pin	1

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224-7403 Cylinder & Mtg Gp-Cold Planer -Sideshift

21***91	Locknut	2
22***03	Cylinder & Mtg Group-Cold Planer; -Sideshift	1
23***51	Cylinder Group-Hydraulic; -Sideshift	1

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224-7402 Cylinder & Mtg Gp-Cold Planer -Depth

21***21	Cylinder Group-Hydraulic	2
21***23	Pin	2
21***24	Bushing	4
21***26	Pin	2

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230-6433 Cylinder & Mtg Gp-Cold Planer -Sideshift

21***91	Locknut	2
23***51	Cylinder Group-Hydraulic; -Sideshift	1
23***33	Cylinder & Mtg Group-Cold Planer; -Sideshift	1

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219-5434 Cylinder & Mtg Gp-Cold Planer -Sideshift

21***91	Locknut	2
21***29	Cylinder Group-Hydraulic; -Sideshift	1
21***34	Cylinder & Mtg Group-Cold Planer; -Sideshift	1

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224-7401 Cylinder & Mtg Gp-Cold Planer -Rotate

21***18	Cylinder Group-Hydraulic; -Rotate	1
22***01	Cylinder & Mtg Group-Cold Planer; -Rotate	1
6V***54	Ring; (Retaining)	2

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219-5432 Cylinder & Mtg Gp-Cold Planer

21***18	Cylinder Group-Hydraulic; -Rotate	1
21***32	Cylinder & Mtg Group-Cold Planer	1
6V***54	Ring; (Retaining)	2

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230-6051 Cylinder Gp-Hydraulic -Sideshift

21***31	Kit-Seal	1
23***51	Cylinder Group-Hydraulic; -Sideshift	1

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219-5418 Cylinder Gp-Hydraulic -Rotate

21***18	Cylinder Group-Hydraulic; -Rotate	1
21***19	Kit-Seal	1

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219-5429 Cylinder Gp-Hydraulic -Sideshift

21***29	Cylinder Group-Hydraulic; -Sideshift	1
21***31	Kit-Seal	1

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219-5421 Cylinder Gp-Hydraulic

21***19	Kit-Seal	1
21***21	Cylinder Group-Hydraulic	1

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224-7409 Hydraulic Ar

22***01	Cylinder & Mtg Group-Cold Planer; -Rotate	1
22***02	Cylinder & Mtg Group-Cold Planer; -Depth	1
22***09	Hydraulic Ar	1
22***34	Manifold Group-Control	1

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224-7366 Hydraulic Ar

22***66	Hydraulic Ar	1
22***01	Cylinder & Mtg Group-Cold Planer; -Rotate	1
22***02	Cylinder & Mtg Group-Cold Planer; -Depth	1
22***34	Manifold Group-Control	1

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248-6490 Hydraulic Ar

22***01	Cylinder & Mtg Group-Cold Planer; -Rotate	1
22***02	Cylinder & Mtg Group-Cold Planer; -Depth	1
22***34	Manifold Group-Control	1
22***17	Valve Group-Check	1

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219-5455 Hydraulic Ar

21***32	Cylinder & Mtg Group-Cold Planer	1
21***33	Cylinder & Mtg Group-Cold Planer; -Depth	1
21***34	Cylinder & Mtg Group-Cold Planer; -Sideshift	1
21***55	Hydraulic Ar	1

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224-7392 Hydraulic Ar

19***12	Seal-O-Ring	2
22***66	Manifold Group-Control	1
22***92	Hydraulic Ar	1
22***03	Cylinder & Mtg Group-Cold Planer; -Sideshift	1

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248-3076 Hydraulic Ar

21***32	Cylinder & Mtg Group-Cold Planer	1
21***33	Cylinder & Mtg Group-Cold Planer; -Depth	1
21***34	Cylinder & Mtg Group-Cold Planer; -Sideshift	1
22***34	Manifold Group-Control	1

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249-0580 Hydraulic Ar

22***01	Cylinder & Mtg Group-Cold Planer; -Rotate	1
22***02	Cylinder & Mtg Group-Cold Planer; -Depth	1
22***34	Manifold Group-Control	1
22***17	Valve Group-Check	1

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231-9853 Lines Gp-Connecting

14***18	Connector As	1
14***27	Connector Group	4
15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1

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249-0581 Lines Gp-Connecting

13***98	Connector	1
14***48	Fitting As; (Quick Disconnect, Male)	1
14***49	Fitting As; (Quick Disconnect, Female)	1
14***18	Connector As	2

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231-4242 Lines Gp-Connecting

14***15	Connector As	4
15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
23***41	Hose As	2

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231-4185 Lines Gp-Connecting

13***98	Connector	1
14***18	Connector As	2
14***27	Connector Group	4
15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1

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231-6146 Lines Gp-Connecting

14***18	Connector As	2
14***27	Connector Group	4
15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1

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248-3077 Lines Gp-Connecting

14***48	Fitting As; (Quick Disconnect, Male)	1
14***49	Fitting As; (Quick Disconnect, Female)	1
14***18	Connector As	2
14***25	Connector As.	2

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248-6491 Lines Gp-Connecting

14***48	Fitting As; (Quick Disconnect, Male)	1
14***49	Fitting As; (Quick Disconnect, Female)	1
14***18	Connector As	2
14***25	Connector As.	2

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231-5255 Lines Gp-Cylinder

14***18	Connector As	2
23***52	Hose As	1
23***53	Hose As	1
23***55	Lines Group-Cylinder	1

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231-4378 Lines Gp-Cylinder

14***18	Connector As	2
23***78	Lines Group-Cylinder	1
23***79	Hose As	1
23***74	Hose As	1

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231-9855 Lines Gp-Cylinder

11***60	Strap	2
14***18	Connector As	7
14***74	Elbow As	1
23***73	Hose As	2

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231-4018 Lines Gp-Motor

14***15	Connector As	2
14***41	Connector Group	2
23***17	Hose As	2
23***18	Lines Group-Motor	1

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231-5221 Lines Gp-Motor

09***19	Connector	2
13***98	Connector	2
14***27	Connector Group	2
14***70	Elbow, 90°,-8 Orb Swiv. /-8 Orfs	1

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231-4186 Lines Gp-Motor

09***19	Connector	2
14***18	Connector As	1
14***27	Connector Group	2
16***76	Adapter As	1

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231-9854 Lines Gp-Motor

12***86	Flange-Split	4
14***27	Connector Group	2
23***71	Hose As	2
23***54	Lines Group-Motor	1

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227-7034 Manifold Gp-Control

22***20	Valve As	4
22***34	Manifold Group-Control	1
22***98	Valve Group-Solenoid	3
23***32	Bolt-Socket Head	4

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220-4766 Manifold Gp-Control

22***66	Manifold Group-Control	1
22***20	Valve As	2
23***95	Connector	2
23***77	Manifold	1

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227-7036 Motor Gp-Gerotor -Basic

22***14	Screw	6
22***36	Motor Group-Gerotor; -Basic	1
25***28	Kit-Seal; (Conveyor Motor)	1

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224-7399 Motor Gp-Piston

22***91	Kit-Seal	1
22***99	Motor Group-Piston	1
22***06	Stud	6
22***07	Nut-Flange	6

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224-7398 Motor Gp-Piston

11***70	Bearing Assembly	1
1T***68	Seal-O-Ring; (Fuel Injection Pump)	1
22***98	Motor Group-Piston	1
22***07	Stud	10

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227-9398 Valve Gp-Solenoid

21***13	Seal-O-Ring	1
21***14	Seal-O-Ring	1
21***73	Cartridge As-Valve	1
21***74	Seal & Retainer As	1

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Service Equipment And Supplies

232-3552 Film Gp

12***56	Film; (Warning) (No Step) (On Top Of Hood Behind Cab On Each Side) (On Each Fender Flare)	1
15***62	Film-Information; (Tie-Down Location)	2
15***35	Film-Warning; (Crush Hazard, Stay Back)	2
15***36	Film-Warning; (Read Operation Manual)	1

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232-3554 Film Gp

12***56	Film; (Warning) (No Step) (On Top Of Hood Behind Cab On Each Side) (On Each Fender Flare)	1
15***62	Film-Information; (Tie-Down Location)	2
15***35	Film-Warning; (Crush Hazard, Stay Back)	2
15***36	Film-Warning; (Read Operation Manual)	1

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232-2453 Film Gp

12***56	Film; (Warning) (No Step) (On Top Of Hood Behind Cab On Each Side) (On Each Fender Flare)	1
15***62	Film-Information; (Tie-Down Location)	2
15***35	Film-Warning; (Crush Hazard, Stay Back)	2
15***36	Film-Warning; (Read Operation Manual)	1

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232-3555 Film Gp

12***56	Film; (Warning) (No Step) (On Top Of Hood Behind Cab On Each Side) (On Each Fender Flare)	1
15***62	Film-Information; (Tie-Down Location)	2
15***35	Film-Warning; (Crush Hazard, Stay Back)	2
15***36	Film-Warning; (Read Operation Manual)	1

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232-3553 Film Gp

12***56	Film; (Warning) (No Step) (On Top Of Hood Behind Cab On Each Side) (On Each Fender Flare)	1
15***62	Film-Information; (Tie-Down Location)	2
15***35	Film-Warning; (Crush Hazard, Stay Back)	2
15***36	Film-Warning; (Read Operation Manual)	1

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Work Tool Arrangement

246-7315 Cold Planer Ar

15***70	Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)	13
22***94	Frame Ar	1
22***14	Harness As-Work Tool; (Power)	1
23***54	Film Group	1

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224-7395 Cold Planer Ar

22***65	Frame Ar	1
22***92	Hydraulic Ar	1
22***95	Cold Planer Ar	1
23***53	Film Group	1

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219-5400 Cold Planer Ar

15***70	Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)	6
21***00	Cold Planer Ar	1
21***50	Frame Ar	1
21***55	Hydraulic Ar	1

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246-7313 Cold Planer Ar

15***70	Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)	13
21***50	Frame Ar	1
22***14	Harness As-Work Tool; (Power)	1
23***55	Film Group	1

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224-7396 Cold Planer Ar

22***92	Hydraulic Ar	1
22***93	Frame Ar	1
22***96	Cold Planer Ar	1
23***52	Film Group	1

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246-7314 Cold Planer Ar

15***70	Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)	13
22***88	Frame Ar	1
22***14	Harness As-Work Tool; (Power)	1
23***53	Film Group	1

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224-7390 Cold Planer Ar

15***70	Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)	6
22***88	Frame Ar	1
22***90	Cold Planer Ar	1
22***09	Hydraulic Ar	1

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224-7397 Cold Planer Ar

15***70	Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness)	6
22***66	Hydraulic Ar	1
22***94	Frame Ar	1
22***97	Cold Planer Ar	1

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Work Tools

224-7333 Adjustment Gp-Depth

09***91	Pin - Spring	2
21***23	Pin	2
21***24	Bushing	4
22***33	Adjustment Group-Depth	1

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224-7383 Control Gp-Cold Planer

13***45	Spacer; (50.8x60x4.8-mm Thk)	4
21***11	Plate-Indicator	1
21***12	Plate-Indicator	1
21***38	Bearing	6

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219-5415 Control Gp-Cold Planer

13***45	Spacer; (50.8x60x4.8-mm Thk)	4
21***99	Pin As; (Lh)	1
21***04	Plate	2
21***09	Pin As; (Rh)	1

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220-4768 Control Gp-Cold Planer

13***45	Spacer; (50.8x60x4.8-mm Thk)	4
21***38	Bearing	6
21***41	Ring-Retainer	2
22***68	Control Group-Cold Planer	1

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224-7361 Control Gp-Cold Planer

13***45	Spacer; (50.8x60x4.8-mm Thk)	4
21***11	Plate-Indicator	1
21***12	Plate-Indicator	1
21***38	Bearing	6

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220-4767 Drive Gp-Cold Planer

22***67	Drive Group-Cold Planer	1
22***08	Nut; (M14x1.5-Thd)	10
22***36	Motor Group-Gerotor; -Basic	1
23***20	Hub Group-Drive	1

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224-7363 Drive Gp-Cold Planer

22***63	Drive Group-Cold Planer	1
22***98	Motor Group-Piston	1
7X***53	Bolt-Plt; (M16 X 2.0 X 40)	10
9X***57	Washer-Pipe As To Main Pump Suction Port	10

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219-5425 Drive Gp-Cold Planer

1T***68	Seal-O-Ring; (Fuel Injection Pump)	1
21***07	Motor Group-Piston	2
21***08	Plate-Drive	1
21***25	Drive Group-Cold Planer	1

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224-7386 Drive Gp-Cold Planer

22***86	Drive Group-Cold Planer	1
22***99	Motor Group-Piston	1
7X***53	Bolt-Plt; (M16 X 2.0 X 40)	10
9X***57	Washer-Pipe As To Main Pump Suction Port	10

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231-2577 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	42
22***08	Holder-Bit	42
23***77	Drum Group-Cold Planer	1

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219-5420 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	78
21***20	Drum Group-Cold Planer	1
22***08	Holder-Bit	78
22***40	Bit As-Cutter; (Concrete Applications)	78

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231-2574 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	36
22***08	Holder-Bit	36
23***74	Drum Group-Cold Planer	1

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231-2587 Drum Gp-Cold Planer

22***08	Holder-Bit	66
22***40	Bit As-Cutter; (Concrete Applications)	66
23***87	Drum Group-Cold Planer	1

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231-2588 Drum Gp-Cold Planer

22***08	Holder-Bit	78
22***40	Bit As-Cutter; (Concrete Applications)	78
23***88	Drum Group-Cold Planer	1

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231-2579 Drum Gp-Cold Planer

22***08	Holder-Bit	66
22***40	Bit As-Cutter; (Concrete Applications)	66
23***79	Drum Group-Cold Planer	1

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231-2581 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	24
22***08	Holder-Bit	24
23***81	Drum Group-Cold Planer	1

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231-2575 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	42
22***08	Holder-Bit	42
23***75	Drum Group-Cold Planer	1

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231-2573 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	24
22***08	Holder-Bit	24
23***73	Drum Group-Cold Planer	1

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231-2585 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	48
22***08	Holder-Bit	48
23***85	Drum Group-Cold Planer	1

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224-7359 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	42
22***59	Drum Group-Cold Planer	1
22***08	Holder-Bit	42
22***40	Bit As-Cutter; (Concrete Applications)	42

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224-7360 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	48
22***60	Drum Group-Cold Planer	1
22***08	Holder-Bit	48
22***40	Bit As-Cutter; (Concrete Applications)	48

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231-2584 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	42
22***08	Holder-Bit	42
23***84	Drum Group-Cold Planer	1

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231-2583 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	42
22***08	Holder-Bit	42
23***83	Drum Group-Cold Planer	1

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231-2586 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	48
22***08	Holder-Bit	48
23***86	Drum Group-Cold Planer	1

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231-2576 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	42
22***08	Holder-Bit	42
23***76	Drum Group-Cold Planer	1

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231-2582 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	36
22***08	Holder-Bit	36
23***82	Drum Group-Cold Planer	1

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231-2572 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	24
22***08	Holder-Bit	24
23***72	Drum Group-Cold Planer	1

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224-7384 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	60
22***84	Drum Group-Cold Planer	1
22***08	Holder-Bit	60
22***40	Bit As-Cutter; (Concrete Applications)	60

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231-2580 Drum Gp-Cold Planer

21***06	Bit As-Cutter; (Standard)	28
22***08	Holder-Bit	28
23***80	Drum Group-Cold Planer	1

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231-2590 Spray Gp-Water

11***19	Bolt-Socket Head; (M4x0.7x25-mm)	2
12***56	Clamp-Hose	6
17***92	Coupling	1
23***90	Spray Group-Water	1

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231-2591 Spray Gp-Water

11***19	Bolt-Socket Head; (M4x0.7x25-mm)	2
12***56	Clamp-Hose	8
17***92	Coupling	1
23***91	Spray Group-Water	1

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231-2592 Spray Gp-Water

11***19	Bolt-Socket Head; (M4x0.7x25-mm)	4
12***56	Clamp-Hose	12
17***92	Coupling	1
23***92	Spray Group-Water	1

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PC205 serial number reference

The serial plate sits on the attachment frame near the mounting plate or hydraulic hose connections, a metal tag riveted to the top or side of the housing. It reads as a 3-letter prefix followed by a sequential number (for example RBG00274 or PCS00599); the letters identify the specific model/configuration build, the digits are the individual unit sequence. Always match the full prefix, not just the digits, when ordering parts or pulling service literature.

Prefix	Identifies	Notes
RBG	PC205 (original/legacy series), high-flow cold planer	450mm (18 in) working-width drum, driven directly by a variable-speed radial-piston motor. Passive attachment, no onboard engine - runs entirely off the carrier's high-flow hydraulic circuit, 80-117 L/min (21-31 gpm). Part of the legacy PC203/PC204/PC205/PC206/PC210 cold planer line covered under one factory parts catalog. The PC204 shares the same 450mm drum but runs on standard-flow hydraulics (80-125 L/min) under its own RDG prefix - the two are not interchangeable. RBG-prefix units show up in dealer resale listings from the mid-to-late 2000s into the early 2010s; confirm exact build year with a dealer against the serial.
PCS	PC205B (B-series update), high-flow cold planer	Same 450mm (17.7-18 in) drum as the original PC205, still high-flow only: 80-117 L/min (21-31 gpm) at 160-240 bar (2320-3480 psi). Passive attachment, no engine - runs off the carrier's hydraulics, built for Cat's high-flow B-series skid steer loaders and compact wheel loaders. Covered in the B-series cold planer parts book as the updated generation of the RBG-prefix PC205; treat as a separate prefix family, not a continuation of RBG numbering.

Frequently asked questions

What engine does the Caterpillar PC205 use?

None. The PC205 and PC205B are passive hydraulic attachments with no onboard engine or ECM. Both run off the host carrier's high-flow hydraulic circuit through a radial-piston motor, roughly 220 rpm fixed on the base PC205 and 142-250 rpm variable on the PC205B, so the actual power source is whatever engine drives the skid steer, track loader, or backhoe loader underneath it.

What is the operating weight of the Caterpillar PC205?

Around 730-750 kg (1,609-1,654 lb), depending on series and bit configuration. The base PC205 runs slightly heavier at roughly 750 kg (1,654 lb); the PC205B is closer to 730 kg (1,609 lb). Treat this as a range rather than a fixed figure since it shifts with the bit package and any optional narrower drum installed.

What replaced the Caterpillar PC205?

Caterpillar updated the base PC205 with the PC205B, which adds a variable-speed radial-piston drive motor, mechanical self-leveling independent depth control, and hydraulic sideshift with tilt over the fixed-speed original. Both keep the same 450 mm (18 in) drum class. The PC205B is not the same model as the PC204, a separate standard-flow sibling that shares the drum width but carries its own identity and was never a PC205 predecessor or successor.

What PC205 owners discuss

What hydraulic flow and pressure does the PC205 need from the carrier?

Optimum flow runs about 60-80 L/min (16-21 gpm) at roughly 230 bar (3,330 psi) — this is the high-flow spec, matched to high-flow skid steers, compact track loaders and compact wheel loaders. Running it on a standard-flow carrier below that range starves the drum motor and slows cutting; running it with the relief set too high risks the case-drain seal. Confirm the carrier's flow class matches the high-flow PC205 designation before hooking up — the shorter-flow PC204 sibling shares the same 450 mm (18 in) drum but is tuned for standard-flow carriers, so the two get mixed up at trade-in time.

How long do the drum bits/picks last, and what's the typical wear pattern?

Picks run roughly 50-150 hours in asphalt and drop to 10-30 hours in abrasive concrete milling — actual life varies a lot with material hardness, cut depth and travel speed. Outer picks on the drum wear first since they sweep the widest arc. Rotate outer and inner picks as they flatten to spread wear evenly, and replace a missing pick right away — a bare holder rides directly on the surface and can gall or reshape, turning a routine pick change into a welding repair on the drum.

What's the most common drive-motor failure owners run into?

Case-drain restriction on the radial-piston drum motor. A kinked or crushed case-drain hose, or a coupler that isn't fully seated, lets back-pressure build on the drain side and blows the motor shaft seal — it shows up as a hydraulic leak at the motor on a unit that was running fine days before. Flat-face couplers also pick up dirt that gets driven into the case-drain circuit if not wiped clean before connecting. Have your dealer verify the motor seal and case-drain circuit if you spot oil weeping around the motor housing.

Does the water kit matter, or is it only for dust control?

Both. It's sold primarily as a dust-suppression option, but the reported side benefit is longer pick life — water-cooled cutting is credited with adding up to roughly 30% more life to the picks by keeping the tool steel from overheating during hot, high-speed cuts. Worth running on extended dry-asphalt jobs even where dust regulations aren't the driver.

How does depth control work on the PC205B — does the operator have to level it manually?

The PC205B is self-leveling: two wear-resistant skid plates ride the ground and stay parallel to it automatically, holding cut depth steady without the operator re-leveling the frame. Left and right depth settings adjust independently at each skid, and depth control on this frame is mechanical (gauge/adjuster at the skids) rather than hydraulic — hydraulic independent depth control only shows up on the larger PC305B-and-up cold planer frames. Depth gauges are readable from the cab.

What about side-shift and coupler wear on this attachment?

Hydraulic side shift lets the drum slide left or right to trim tight to curbs and walls without repositioning the carrier, and the side-shift rods/flat bars are a listed grease point that develops play on higher-hour units. Separately, check the attachment's own quick-attach coupler interface for slop — a worn mounting coupler causes drum chatter or misalignment under cutting load even when the drum bearings themselves are fine, so don't mistake one for the other.

What should I check before buying a used PC205?

Walk the drum first: uneven or heavily flattened picks, especially on the outer row, point to overdue rotation and possible holder damage — look for galled or reshaped holders. With the machine off and pressure relieved, check for play in the drum's support bearing on the non-motor side. Inspect all hoses for cracking, abrasion or soft spots, and check the case-drain coupler for a full seat and no leak staining around the motor. Look at the planetary drive housing for weeping oil, which is a dealer-level repair rather than a simple seal swap. Cycle the side shift and depth skids to confirm smooth, play-free travel, and check the spec plate to confirm it's the high-flow (PC205) build rather than a mismatched standard-flow variant. Have your dealer verify motor and planetary condition before finalizing purchase on any higher-hour unit.

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

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