Caterpillarwork toolcold planer

Caterpillar PC206

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar PC206 is a cold-planer work tool, not a self-powered machine. It is a passive, hydraulically driven pavement-milling attachment built around a 600 mm (24 in) cutting drum, mounted through a universal skid-steer style quick-attach coupler to compact carriers running a high-flow or high-flow XPS auxiliary hydraulic circuit, including skid steer loaders, compact track loaders, multi-terrain loaders, compact wheel loaders, and backhoe loaders. It carries the factory serial prefix DDG and has no onboard engine, ECM, undercarriage, or transmission of its own; a carrier-fed hydraulic piston motor drives the drum directly. The PC206 sits toward the upper end of a legacy Cat cold-planer lineup that also includes the narrower PC203 (350 mm / 14 in drum) and PC204/PC205 (450 mm / 18 in drum), plus the PC210, which runs the widest drum in the family and needs the highest hydraulic flow of the group, spanning curb-and-gutter trim work up to wider lane-edge milling. No documentation ties the PC206 to a confirmed distinct generation split or a fixed production-year window; Caterpillar later carried the same 24 in drum class forward in its current lineup under the B-series naming as the PC306 and PC306B.

Within its own lineup, the PC206 is distinguished mainly by drum width and depth capacity rather than by a documented feature or engine change: it cuts wider and deeper than the PC205 but is built for smaller carriers than the PC210, and it carries independent left/right depth gauges, self-leveling skid shoes, and roughly 650 mm (26 in) of side-shift travel for working tight to curbs and walls. Because it has no engine or driveline of its own, the attachment's durability and resale value in the used and parts market ride almost entirely on wear items: cutting picks and holders, skid shoes, hydraulic hose and quick-disconnect condition, the coupler and mounting pins, and the internal condition of the hydraulic piston motor. A used PC206 is best judged by drum bearing play, pick and skid-shoe wear, and whether its hydraulic flow, pressure, and connector configuration still match the carrier it will run on.

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 PC206 specifications

Engine

Power source	No onboard engine. PC206 is a passive hydraulic work tool driven entirely by the carrier machine's hydraulic system (skid steer, multi-terrain loader, compact track loader, compact wheel loader, or backhoe loader).
Drive method	Piston motor, planetary drum drive
Required carrier hydraulics	High-flow or high-flow XPS auxiliary hydraulic circuit; compatible carriers include Cat 246C/256C/262C/272C/277C/287C/297C/279C/289C/299C skid steer, multi-terrain and compact track loaders, plus 906H/908H compact wheel loaders
Emissions tier	Not applicable — no engine on the attachment itself

Weights

Operating weight

906 kg (1,998 lb)

Dimensions

Overall width	1,720 mm (68 in)
Overall length	1,265 mm (50 in)
Overall height	approx. 930-950 mm (37 in); minor rounding variance between sources on the metric conversion
Maximum drum (cutting) width	600 mm (24 in)
Sideshift travel	650 mm (26 in)
Tilt angle range	±16°

Performance

Maximum cutting depth (standard)	170 mm (7 in)
Drum speed at maximum flow	160 rpm
Drum torque at maximum pressure	3,720 N·m (837 lb-ft)
Optimal hydraulic flow range	95-140 L/min (25-37 gpm)
Optimal hydraulic pressure range	160-300 bar (2,320-4,350 psi)
Bit configuration	Conical, all-purpose bits arranged around the drum

Service capacities (summary)

Fuel tank	Not applicable — attachment has no engine or fuel system
Hydraulic system	No independent hydraulic reservoir; runs off the carrier machine's own hydraulic oil supply and cooling system
Engine oil	Not applicable
Cooling system	Not applicable — cooling handled by carrier machine hydraulic cooling circuit

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

PC206 fluids & capacities

System	Capacity	Recommended fluid
Engine crankcase (with filter)	Not applicable	The PC206 cold planer is a passive hydraulically driven work tool with no onboard engine. All power comes from the carrier machine's hydraulic system, so no engine oil chart exists for this attachment.
Cooling system	Not applicable	No engine, no radiator or coolant circuit on the attachment itself.
Fuel tank	Not applicable	No fuel system; the attachment is fully hydraulically actuated from the host carrier.
Transmission / drum drive	Not documented as a separate fill point	The cutting drum is driven directly by a variable-speed hydraulic motor with no chain case or gearbox reservoir called out in the maintenance chart. No standalone gear-oil capacity or spec is listed for this drive.
Final drives / axles	Not applicable	No final drives or axles; drum rotation is direct hydraulic-motor drive, not a geared final drive.
Hydraulic system and tank	Supplied by carrier machine; no dedicated reservoir or capacity on the attachment	The planer has no hydraulic tank of its own. It runs on the host skid steer, compact track loader, compact wheel loader, or backhoe loader's high-flow (or high-flow XPS) hydraulic circuit, so fluid type and capacity follow that carrier's own fluid chart (typically Cat HYDO Advanced 10 or the carrier's specified multi-viscosity hydraulic oil, chosen for the season and climate per the carrier OMM).
Grease points (drum bearings, depth-control cylinder pins, control shafts, skid-shoe pivots)	Grease spec only, no fill volume given	NLGI 2 multipurpose grease with extreme-pressure/moly additive, applied on a weekly service interval along with a visual check of the skid shoes and drum frame and a hose-leak inspection before use.

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

Caterpillar PC206 maintenance schedule

Service interval	Tasks
Every 50 h	Inspect cutting picks for wear, chipping, and free rotation in the holder; replace any pick that will not spin by hand. Check skid shoes for even wear side to side; swap before a taper shows up in the cut. Grease the drum bearings, depth-control cylinder pins, control shafts, and skid-shoe pivots with NLGI 2 EP/moly grease. Inspect hydraulic hoses, quick-disconnects, and fittings for leaks, chafing, or loose connections before hookup. Check the coupler and mounting plate/pins for cracking, elongation, or looseness. Clear packed asphalt or debris from the drum, pick holders, and skid shoes at the end of each shift.
Every 250 h	Re-torque coupler and mounting-plate fasteners to spec. Raise the attachment and hand-rotate the drum to check for bearing play or noise. Inspect depth-control cylinder rod seals for leakage or scoring. If the water kit is fitted, check the tank, lines, and spray manifold for cracks or clogging. Inspect the high-flow electrical connector and wiring for corrosion or damage.
Every 500 h	Inspect the hydraulic motor case-drain line and fittings for wear or seepage. Check drum-drive motor mounting bolts for looseness and retorque as needed. Inspect side-shift and tilt pivots and bushings for wear or play. Verify carrier hydraulic flow and pressure still match the attachment's rating with a flow-meter check at the coupler.
Every 1,000 h	Inspect the drum shaft and bearing housing for play; replace bearings that show wear. Check the piston motor for internal leakage or a drop in drum speed or torque under load. Inspect all pick holders and blocks for wear or cracking; replace worn holders. Replace worn depth-control cylinder pins and bushings.
Every 2,000 h	Pull and inspect, or rebuild, the hydraulic piston motor if drum speed or torque has fallen off. Inspect the drum housing and end plates for cracking or heat distortion from heavy milling. Tear down and inspect the skid-shoe frames and self-leveling linkage. Replace drum bearings and seals as a set regardless of visual wear at this milestone.
Every 4,000 h	Fully strip the drum assembly and inspect the shaft, splines, and drive coupling for wear beyond service limits. Replace all drum seals, bearings, and pick holders as part of a scheduled rebuild. Inspect and resurface or replace the mounting plate and coupler wear surfaces. Pressure-test the hydraulic motor and depth-control cylinders before returning the attachment to service.

Servicing the PC206 beyond the schedule

Predictive Maintenance & Fluid Analysis

The PC206 has no engine, so predictive maintenance tracks the carrier's hydraulic supply and the drum itself rather than oil samples from the attachment. Log drum speed and torque under a known cut to catch piston-motor wear before it fails outright, and flow/pressure-check the coupler periodically to spot a drifting hydraulic supply. Sample the carrier's own hydraulic oil per its OMM schedule, since that fluid is what actually drives the PC206. Rising pick-wear rates or uneven skid-shoe wear are early warning signs of drum-bearing or alignment trouble worth tracking over time.

Corrective & Common Repairs

Most PC206 repairs are wear-item swaps rather than driveline work. Expect frequent cutting-pick replacement, especially milling concrete or heavy asphalt, and confirm each replacement pick spins freely in its holder. Skid shoes wear as a pair and should be replaced together to keep the cut flat rather than tapered. Leaking hoses, worn quick-disconnects, and a mismatched 8-pin high-flow connector round out the common fixes; check connector pinout against the carrier's harness before assuming a used unit is plug-and-play, and have hydraulic compatibility verified before it goes into regular service.

Overhaul & Rebuild Points

Rebuild work on the PC206 centers on the drum and its hydraulic piston motor, not a powertrain teardown. Drum bearings, seals, and pick holders wear as a set and are usually replaced together once play or leakage shows up. A motor that no longer holds rated drum speed or torque with correct carrier flow and pressure supplied needs internal inspection or rebuild. Depth-control cylinder pins, bushings, and rod seals, along with the self-leveling skid-shoe linkage, are the other recurring rebuild points on this attachment as hours accumulate.

Seasonal & Environment Servicing

Cold weather affects the PC206 mainly through the carrier's hydraulic oil viscosity: cold, thick fluid slows drum response and can starve the motor until it warms up, so match the carrier's cold-weather hydraulic oil grade. Grease points stiffen in low temperatures too, so shorten the lube interval in winter. In hot weather or on abrasive aggregate asphalt, pick wear accelerates, so check picks more often. If the optional water kit is fitted for dust suppression and bit cooling, drain the tank and lines before freezing weather to prevent cracking.

PC206 attachments & work tools

Identity and host-machine compatibility

PC206 is a Cat cold planer (asphalt/pavement milling) work tool, not a standalone machine. It mounts to skid steer loaders, multi-terrain loaders, compact track loaders, compact wheel loaders, and backhoe loaders, and is also fitted to comparable competitor skid steers. It is the 24 in (600 mm) drum-class unit in a legacy line alongside PC203, PC204, PC205 and PC210; the 24 in class was later carried forward under the B-series name PC306/PC306B.

Coupler and mounting system

Uses the universal skid-steer style quick-attach coupler common to Cat work tools, with an opposing-edge locking design that lets the operator swap tools without leaving the cab. The planer is self-pivoting so the drum sits flat on the ground regardless of coupler tilt when attached.

Hydraulic circuit requirement

Runs on a high-flow auxiliary circuit; optimum flow is in the region of 95-140 L/min (25-37 gpm) with working pressure around 160-300 bar (2,320-4,350 psi), figures that vary somewhat by source and by whether the host is a base high-flow or XPS/XHP circuit. Standard-flow-only host machines typically need a high-flow or case-drain conversion kit to run this class of planer.

Cutting drum and depth capacity

Maximum drum/cutting width is about 24 in (600 mm), with maximum depth of cut around 170 mm (7 in). Drum speed at max flow runs roughly 160 rpm with drum torque near 3,700 N·m (about 2,550 lb-ft) class, driven by a piston-motor planetary or direct-drive arrangement depending on flow configuration.

Bit and drum options

Standard configuration uses all-purpose conical bits sized to the drum. Optional concrete-rated bits are available for the family for cutting rigid pavement, in addition to the standard asphalt/all-purpose bit set.

Dust and water control options

An optional water sprinkler kit is offered across this cold planer family for dust suppression and bit cooling during dry milling passes; it is a bolt-on option rather than a standard fitting.

Depth control, side-shift, and tilt features

Independent left/right depth gauges allow the operator to set drum depth per side, with self-leveling skid shoes for consistent cut depth. Side-shift travel is about 650 mm (26 in) for close work along curbs and walls. Tilt angle range for angled cuts is reported anywhere from about 8 to 16 degrees depending on the specific generation/series documentation, so treat the exact figure as varying by configuration.

All PC206 assemblies by section

Every catalogued assembly group for the Caterpillar PC206. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Frame And Body

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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224-7393 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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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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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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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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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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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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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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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

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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219-5434 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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224-7402 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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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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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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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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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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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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219-5455 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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224-7366 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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248-3076 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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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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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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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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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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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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231-6146 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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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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231-4185 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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231-9853 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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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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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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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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231-5255 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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231-5221 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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231-9854 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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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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231-4018 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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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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227-7034 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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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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224-7398 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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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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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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232-3555 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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232-3554 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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232-3553 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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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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Work Tool Arrangement

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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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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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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246-7314 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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224-7395 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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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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224-7390 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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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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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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224-7361 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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220-4768 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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224-7383 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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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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224-7363 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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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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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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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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231-2577 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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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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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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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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231-2585 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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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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231-2579 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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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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231-2576 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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231-2586 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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231-2572 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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231-2582 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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231-2574 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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231-2583 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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231-2580 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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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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231-2581 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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231-2590 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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231-2592 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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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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PC206 serial number reference

The PIN/serial plate on this cold planer work tool is mounted on the attachment frame itself, near the mount plate or drive housing, not on the carrier machine. Read the 3-letter prefix as the model/arrangement code and the digits that follow as the sequential unit number (for example, a DDG-prefixed unit numbered in the low hundreds). The prefix does not encode a build date directly, so confirm exact production span and configuration with a dealer parts lookup.

Prefix	Identifies	Notes
DDG	PC206 cold planer, high-flow hydraulic work tool (610 mm / 24 in class drum)	DDG1-Up. Passive hydraulically driven attachment with no engine or ECM of its own; runs off the carrier's high-flow or high-flow XPS hydraulic circuit through a radial piston drive motor. Parts documentation is shared across the cold planer work-tool line (PC203, PC204, PC205, PC210), but the DDG prefix itself is listed specifically against the PC206. No PC206B or other suffix variant is documented; only one prefix/generation is confirmed for this model.

Frequently asked questions

What powers the Caterpillar PC206?

The PC206 has no engine of its own. It is a passive cold-planer work tool driven entirely by the carrier machine's high-flow (or high-flow XPS) auxiliary hydraulic circuit through a hydraulic piston motor turning the cutting drum.

What is the PC206's operating weight?

The PC206 has an operating weight of about 906 kg (1,998 lb).

What replaced the Cat PC206?

No source ties the PC206 directly to a named successor model. Caterpillar continued the same 600 mm (24 in) drum class in its current lineup under the B-series naming as the PC306 and PC306B, but that is a line continuation rather than a confirmed direct engineering replacement for the PC206 specifically.

What PC206 owners discuss

Does the PC206 need the carrier's high-flow hydraulic package, or will standard flow work?

Owners are consistent on this: the PC206 drum is sized for the high-flow (or high-flow XPS) auxiliary circuit, not the base standard-flow setup. Running it on a carrier that only has standard flow leaves the drum starved for horsepower - it bogs in anything but the thinnest skim cut, chatters instead of cutting clean, and chews through picks faster because they're dwelling in the material too long per rotation. The general guidance from people who run this class of drum attachment is to pick a carrier that sits at the high end of its flow range for the attachment, not the bare minimum, and to confirm both flow and pressure match - a lower-flow, higher-pressure circuit can out-perform a higher-flow, lower-pressure one, so GPM alone doesn't tell the whole story.

How often do the cutting picks/bits actually need replacing?

Consensus from people running drum-style planers in this size class is that pick life is short and highly condition-dependent - on heavy asphalt or any concrete work, expect to be pulling and swapping picks every day or two, not weeks. The wear driver operators point to most often is picks that stop rotating freely in their holders; a pick that's seized in its socket wears a flat on one side instead of wearing evenly and fails much sooner. Keeping the holders clean and checking that each pick spins by hand is treated as routine, not optional maintenance.

What's the normal wear pattern on the skid shoes, and do they need attention often?

Skid shoes are a wear item by design - they're the sacrificial surface that rides the ground and holds the drum at a consistent depth, so they're expected to wear down and get swapped periodically rather than last the life of the machine. The practical point owners make is to keep the shoes even side-to-side; if one wears faster than the other the drum starts cutting a taper instead of a flat pass. Like picks, skid shoes are treated as a normal consumable and are excluded from warranty coverage.

Is it better to take the PC206 down to max cutting depth in one pass, or work in shallower passes?

The shared advice across cold-planer operators is to avoid running at full depth in a single pass. A shallower cut - commonly cited around 38-50 mm (1.5-2 in) - gives each pick enough time out of the material on every drum rotation to shed heat and clear debris before it re-enters the cut. Forcing the full available cutting depth on every pass keeps the carbide tips hot and loaded longer, which shows up as faster pick wear and a rougher-looking mill. Where the carrier offers depth feedback in the cab, operators use it to dial in a repeatable shallow pass rather than eyeballing the ski/shoe position.

What electrical or mounting quirks come up connecting this attachment to a skid steer or track loader?

The PC206 left the factory wired with an 8-pin connector for its high-flow control circuit. Carriers or older harness setups built around a 14-pin high-flow scheme aren't a direct plug-in - people have had to run a conversion adapter or rewire the connector to match before the attachment will talk to the carrier's controls correctly. Before assuming a used unit is plug-and-play on a given carrier, check the connector pin count and function against the carrier's harness. Have your dealer or a qualified technician verify the wiring/pinout match before putting the attachment into service.

What should a buyer check when looking at a used PC206?

Direct owner commentary naming this exact model is thin online, since it's a passive work tool rather than a machine people write long ownership threads about - but the checks that matter follow directly from how it's built and used. Walk the drum for bearing play or noise when spun by hand, check remaining pick length and confirm each one still rotates freely in its holder, and compare skid-shoe wear side to side. Inspect the mounting plate and coupler for cracking or elongated pin holes from repeated attach/detach, and check hoses and quick-disconnects for leaks or worn threads. If the unit has a water kit fitted, check the tank, lines, and spray manifold for cracking or clogging. Finally, confirm the connector type (8-pin vs. converted) and that the flow/pressure rating lines up with the carrier you intend to run it on before doing a test cut. Have your dealer verify hydraulic compatibility and coupler condition before the attachment goes into regular use.

Does matching GPM to the attachment's rating guarantee good performance?

No - operators and product specialists who deal with this class of drum attachment repeatedly point out that flow rate alone is not the whole spec. Cutting power comes from flow multiplied by pressure, so a carrier running lower flow at higher system pressure can drive the drum as well as or better than one with higher flow at lower pressure. The practical takeaway is to check both numbers against the attachment's rating, not just the GPM figure on a spec sheet, and to size the carrier toward the top of its flow range rather than the bare minimum needed to spin the drum.

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

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