Caterpillarpaving compactorvibratory compactor
Caterpillar CP-653
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar CP-653 is a single-drum vibratory soil compactor: a padfoot drum shell up front on an articulated frame, paired with a differential-driven, rubber-tired rear axle, built for subgrade, embankment, and fill compaction ahead of paving rather than as a tandem asphalt roller. Power comes from a Cat 3304 turbocharged diesel, an inline four-cylinder engine of roughly 7.0 L displacement rated at approximately 100 kW (134 hp) gross. Operating weight runs around 18.5 tonnes (about 40,800 lb) for the padfoot CP-653, slightly above its smooth-drum CS-653 sibling on the same chassis at roughly 17.1 tonnes (37,700 lb); exact figures move with tires, ballast, and cab or canopy fitment. The CP-653 belongs to Caterpillar's older single-drum compactor family alongside the smaller-frame CP-643/CS-643 pair, dating to the 1980s into the early 1990s production era (confirm exact build year against the machine's own serial prefix). Factory configurations centered on drum shell choice (padfoot CP versus smooth CS), open ROPS canopy or enclosed cab, and standard versus high-amplitude vibratory settings.
Within this family, the CP-653 and CS-653 share chassis, 3304 engine, axle, and final-drive architecture, differing mainly in drum shell and resulting ballast weight, while the smaller CP-643/CS-643 covered lighter compaction duty. Caterpillar subsequently moved this weight class onto later C-series and E-series single-drum compactors (the CS/CP-563 through CS/CP-663 range and beyond), which added electronic engine management, cab climate control, and dual-amplitude vibratory systems the mechanical CP-653 never had. That makes the CP-653 a legacy machine today: it is essentially absent from current dealer new/used listings, but running units and cannibalized parts stock still circulate in general earthmoving and site-prep fleets, where its simple mechanical-injection engine and non-electronic hydraulics keep it cheap to diagnose and repair. Parts demand on these machines is concentrated on wear items - drum scrapers, isolation mounts, axle and final-drive seals, and 3304 fuel-system components - rather than complete assemblies, since factory support has migrated to the E-series machines that followed it.
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 CP-653 specifications
Engine
| Engine model | Cat 3304 diesel, inline-4 (turbocharged variant shared with the CP-643/CS-643/CS-653 vibratory compactor line) |
| Gross power | 134.2 hp (100 kW) |
| Net power | Not published separately from gross rating in available spec data |
| Displacement | 7.0 L (427 cu in) |
| Cylinders | 4, inline |
| Emissions tier | Pre-emissions mechanical diesel; no EPA/EU tier certification published for this model era |
Weights
| Operating weight | 18,500 kg (40,786 lb) |
| Shipping weight | Not published separately from operating weight in available spec data |
| Ground pressure | Not published |
Dimensions
| Overall length (without blade) | 6.15 m (20.18 ft) |
| Width over tires | 2.46 m (8.08 ft) |
| Height to top of cab | 3.70 m (12.14 ft) |
| Drum diameter | 1.70 m (66.93 in) |
| Drum width | 2.20 m (86.62 in) |
| Wheelbase / track gauge | Not published |
| Ground clearance | Not published |
Performance
| Maximum travel speed | 15.6 km/h (9.7 mph) |
| Vibration frequency | 32.5 Hz |
| Centrifugal force, high amplitude | 217.9 kN (48,995 lbf) |
| Gradeability | Not published |
| Tire size | 20.5x25, XRA tread rear tires (steel drum front) |
Service capacities (summary)
| Fuel tank | 230 L (60.8 gal) |
| Hydraulic system | 130 L (34.4 gal) |
| Engine oil | 22.3 L (5.9 gal) |
| Cooling system | Not published |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
CP-653 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase, with filter (Cat 3304 diesel) | 22.3 L (5.9 US gal) | Cat DEO diesel engine oil. Viscosity grade is picked from the standard Cat engine-oil chart by minimum start-up and maximum operating ambient temperature: lighter multigrades (SAE 0W-30/0W-40/5W-30) for cold climates, SAE 10W-30 or 15W-40 for temperate/variable climates, straight SAE 30 in consistently hot climates. The exact grade table printed for this engine prefix was not recovered from an accessible source; confirm the current chart with a dealer. |
| Cooling system | Not documented in accessible sources for this exact model/configuration - varies by radiator and cab option; verify with dealer | Cat antifreeze/coolant (Cat ELC extended-life coolant or an equivalent Cat DEAC-type coolant), mixed to the concentration Cat specifies for the expected ambient range. |
| Fuel tank | 230 L (60.8 US gal) | No. 2-D diesel fuel for normal temperatures; No. 1-D diesel fuel is preferred in cold ambient conditions. |
| Hydraulic system (reservoir and circuit, combined) | 130 L (34.4 US gal) | Cat hydraulic oil from the Cat HYDO/TDTO family, graded by ambient temperature same as engine oil practice. Specific viscosity table for this legacy machine prefix not recovered; verify grade with dealer before top-off or change. |
| Rear axle differential | Not documented in accessible sources for this exact model - verify with dealer | Cat TDTO (Transmission/Drive Train Oil), per standard Cat axle lubrication practice for this machine class. |
| Final drive planetary, each rear wheel | Not documented in accessible sources for this exact model - verify with dealer | Cat TDTO, matched to ambient temperature per standard Cat drive-train oil practice. |
| Vibratory drum bearing / eccentric weight housing | Not documented in accessible sources for this exact model - verify with dealer | Cat TDTO or a full-synthetic gear-and-bearing lubricant with no viscosity improvers, per standard Cat practice for vibratory-drum support bearings; API GL-4/GL-5 gear oils are not suited to this location. |
| Grease points (spec only) | N/A - serviced via grease fittings, no reservoir capacity | Cat multipurpose grease (Cat MPGM) or an equivalent NLGI-graded multipurpose grease, applied at the machine's scheduled grease points. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar CP-653 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 3,000 h |
|
Servicing the CP-653 beyond the schedule
Predictive Maintenance & Fluid Analysis
Run scheduled oil sampling on the CP-653's Cat 3304 engine, rear-axle differential, hydraulic tank, and eccentric-weight (vibratory support) housing at the intervals in the OMM - these are the wear points that show trouble first on this chassis. Track coolant condition even though the mechanical 3304 predates extended-life coolant management practices used on later machines. Watch for turbocharger shaft play and injection-pump wear, since both surface as power loss and blue exhaust smoke well before a failure strands the roller in the field.
Corrective & Common Repairs
Typical CP-653 repairs center on the vibratory drum: worn isolation mounts, cracked eccentric-weight-housing seals, and packed-material buildup that chews up drum scrapers. On the drivetrain, expect rear-axle differential seal leaks and final-drive planetary wear on the axle and drum ends alike. The mechanical 3304 fuel system - injection pump and injectors - is the other common repair area; rough idle or hard starting usually traces back to pump timing or worn injector tips rather than the turbocharger itself.
Overhaul & Rebuild Points
A CP-653 overhaul focuses on the vibratory system and final drives rather than the engine top end. Rebuild candidates include the eccentric-weight-housing bearings and seals, drum isolation mounts, and both final drive planetaries once oil samples start showing metal. On the 3304, a mid-life overhaul typically covers the turbocharger, injection pump, and valve train, alongside a full cooling-system flush and water pump inspection to keep the mechanical diesel from overheating under sustained vibratory load.
Seasonal & Environment Servicing
Before winter lay-up, drain the fuel-water separator, bring coolant up to full antifreeze protection, and check heater and wiper circuits if the machine carries an enclosed cab. In hot, dusty compaction work, service the air cleaner elements and radiator core more often than the standard interval, and check drum-scraper adjustment daily - packed fines built up around the padfoot shell accelerate isolation-mount wear fastest in dry, abrasive fill material.
CP-653 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Engine Oil Pressure lamp (red, oil-can icon) | Engine oil pressure has dropped below the safe minimum for the 3304 mechanical diesel | Low oil level, worn oil pump, plugged oil filter, or a failed pressure sender/switch | Shut the engine down immediately, check oil level and filter condition, verify pressure with a mechanical gauge before restarting |
| Coolant Temperature lamp / gauge in red zone | Engine coolant temperature has exceeded normal operating range | Low coolant level, blocked radiator core, slipping or broken fan belt, or thermostat stuck closed | Stop and idle down, check coolant level and belt tension once cool, inspect radiator fins and hoses |
| Alternator / Battery Charge lamp (amber, battery icon) | Charging system is not putting current back into the batteries | Broken or slipping alternator belt, failed alternator, or a loose/corroded wiring connection | Check belt tension and condition first, then test alternator output and battery connections |
| Air Cleaner Restriction indicator | Engine intake air filter has reached its service restriction limit | Dirt-loaded primary air filter element or a collapsed/torn element allowing false readings | Inspect and clean or replace the air filter element, reset the restriction indicator |
| Hydraulic Oil Temperature / Filter Bypass lamp | Hydraulic system oil is running hot or the filter has gone into bypass | Low hydraulic fluid level, plugged return filter, or a fouled hydraulic oil cooler | Check fluid level and filter condition, clean cooler fins, let system cool before continued operation |
| Parking Brake indicator lamp | Parking/drum brake is applied or the brake release circuit has a fault | Operator left park brake engaged, or low brake-release pressure in the drum brake circuit | Confirm brake control position first, then check brake release pressure if the lamp stays on with the brake released |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
CP-653 attachments & work tools
Padfoot drum & pad configuration
CP-653 is the padfoot-drum member of a legacy large single-drum vibratory soil compactor platform (sibling smooth-drum model: CS-653), drum width around 2.2 m (86.6 in) and diameter around 1.7 m (66.9 in). Pads are welded rows of tapered/oval feet on the shell for kneading semi-cohesive and cohesive soils; on this generation the pad feet are integral to the drum shell rather than a field-swappable bolt-on kit, and individual pad tips are the normal wear-replacement item.
Dozer blade attachment
A front-mounted, hydraulically operated dozer blade is offered as a factory-fit option across this compactor family, used for spreading and rough grading ahead of compaction passes. Fitting the blade adds to overall machine length and draws off the machine's own hydraulic circuit rather than a separate power pack.
Scraper / cleaner bars
Adjustable, individually replaceable scraper bars mount front and rear of the drum to strip soil buildup from the pads and shell. Standard equipment across the CP/CS compactor lineup, treated as a wear item rather than an optional work tool.
Vibratory drum arrangement
Single vibratory drum driven by an eccentric weight system; one data source lists a vibration frequency near 32.5 Hz with a high-amplitude centrifugal force rating around 218 kN (49,000 lbf) for the CP-653, but selectable dual-amplitude arrangements are common elsewhere in this compactor class, so exact amplitude/frequency steps vary by configuration/series and should be confirmed against the specific serial-number build.
Operator station / ROPS-FOPS configuration
Offered from the factory with either an open ROPS/FOPS canopy or an enclosed cab (air conditioning available on some regional builds), a build configuration choice rather than a bolt-on work tool, consistent with the wider CP/CS compactor lineup of this era.
Coupler / mounting system
No skid-steer-style quick coupler is used on this class of single-drum compactor. Drum-mounted components (pad shells/tips, scraper bars, blade) attach via bolted brackets and the machine's own hydraulic and fastener hardware rather than an interchangeable tool coupler.
Tire and undercarriage options
Rear axle runs on rock/service-rated tires (one source lists a 20.5x25 tread pattern); tire compound and tread selection is a factory/dealer configuration choice for the operating surface rather than a work-tool attachment.
All CP-653 assemblies by section
Every catalogued assembly group for the Caterpillar CP-653. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
1w7919 Air Cleaner Gp
| 1W***19 | Air Cleaner Group | 1 |
1w5832 Air Cleaner Gp
| 1W***32 | Air Cleaner Group | 1 |
1w3793 Fastener Gp-Exhaust Manifold
| 1W***93 | Fastener Group-Exhaust Manifold; Exhaust Manifold Fastener Group | 1 |
1w7742 Lines Gp-Air
| 1W***42 | Lines Group-Air; Air Lines Group | 1 |
1w7743 Lines Gp-Air
| 1W***43 | Lines Group-Air; Air Lines Group | 1 |
1w0558 Lines Gp-Turbocharger Oil
| 1W***58 | Lines Group-Turbocharger Oil; Turbocharger Oil Lines Group | 1 |
2p6571 Manifold Gp-Exhaust
| 2P***71 | Manifold Group-Exhaust; Exhaust Manifold Group | 1 |
1w3404 Mounting Gp-Muffler
| 1W***04 | Mounting Group-Muffler; Muffler Mounting Group | 1 |
4w1488 Muffler Gp
| 4W***88 | Muffler Group; Muffler Group | 1 |
7n4651 Turbocharger Gp*R
| 7N***51 | Turbocharger Group | 1 |
7n4650 Turbocharger Gp
| 7N***50 | Turbocharger Group | 1 |
Basic Engine
1w2872 Balancer Gp
| 1W***72 | Balancer Group; Balancer Group | 1 |
1n4436 Camshaft Gp-Single
| 1N***36 | Camshaft Group-Single; Single Camshaft Group | 1 |
2w0102 Cover Gp-Cylinder Block
| 2W***02 | Cover Group-Cylinder Block; Cylinder Block Cover Group | 1 |
2p6530 Cover Gp-Cylinder Head
| 2P***30 | Cover Group-Cylinder Head; Cylinder Head Cover Group | 1 |
2p6528 Cover Gp-Front Housing
| 2P***28 | Cover Group-Front Housing; Front Housing Cover Group | 1 |
2p6514 Cover Gp-Valve Mechanism
| 2P***14 | Cover Group-Valve Mechanism; Valve Mechansim Cover Group | 1 |
6n8080 Crankshaft Gp
| 6N***80 | Crankshaft Group; Crankshaft Group | 1 |
7n6552 Cylinder Block As
| 7N***52 | Cylinder Block As | 1 |
7n6553 Cylinder Block Gp
| 7N***53 | Cylinder Block Group; Cylinder Block Group | 1 |
7n8874 Cylinder Head Gp
| 7N***74 | Cylinder Head Group; Cylinder Head Group | 1 |
1w1393 Drive Gp-Fan
| 1W***93 | Drive Group-Fan; Fan Drive Group | 1 |
7n9534 Fastener Gp-Cylinder Head
| 7N***34 | Fastener Group-Cylinder Head; Cylinder Head Fastener Group | 1 |
8n0872 Fastener Gp-Front Housing
| 8N***72 | Fastener Group-Front Housing; Front Housing Fastener Group | 1 |
7n4824 Fastener Gp-Oil Pan
| 7N***24 | Fastener Group-Oil Pan; Oil Pan Fastener Group | 1 |
2p0976 Flywheel Gp
| 2P***76 | Flywheel Group; Flywheel Group | 1 |
1w5634 Gear Gp-Front Timing
| 1W***34 | Gear Group-Front Timing; Front Gear Group--Timing | 1 |
2w5741 Housing Gp-Flywheel
| 2W***41 | Housing Group-Flywheel | 1 |
8n0303 Housing Gp-Front
| 8N***03 | Housing Group-Front; Front Housing Group | 1 |
6n8336 Lifting Gp-Engine
| 6N***36 | Lifting Group; Lifting Eye Gp-Engine | 1 |
2p6175 Pan Gp-Engine Oil
| 2P***75 | Pan Group-Oil; Pan Gp-Engine Oil | 1 |
2w1177 Rod & Piston Gp
| 2W***77 | Piston & Rod Group; Connecting Rod And Piston Group | 1 |
7n8152 Pulley Gp
| 7N***52 | Pulley Group; Pulley Group | 1 |
7n1142 Pulley Gp-Crankshaft
| 7N***42 | Pulley Group-Crankshaft; Crankshaft Pulley Group | 1 |
2p6224 Seal Gp-Crankshaft
| 2P***24 | Seal Group-Crankshaft; Crankshaft Seal Group | 1 |
5e6630 Support Gp-Engine
| 5E***30 | Support Group | 1 |
4c1764 Support Gp-Engine
| 4C***64 | Support Group-Engine | 1 |
8n4913 Support Gp-Engine
| 8N***13 | Support Group-Engine; Engine Support Group | 1 |
8n0107 Trunnion Gp-Engine
| 8N***07 | Trunnion Group-Engine; Engine Trunnion Group | 1 |
7n8024 Valve-Mechanism Gp
| 7N***24 | Valve Mechanism Group; Valve Mechanism Group | 1 |
Braking System
8r0826 Brake Gp-Hyd Caliper Service
| 8R***26 | Brake Group-Hydraulic Caliper Service | 1 |
5e6653 Brake Gp-Parking
| 5E***53 | Brake Group-Parking | 1 |
5e7570 Brake Gp-Parking
| 5E***70 | Brake Group-Parking | 1 |
Cooling System
8n4457 Base Gp-Oil Filter
| 8N***57 | Base Group-Oil Filter; Base Group-Engine Oil Filter | 1 |
2w6953 Cooler Gp-Filter Base & Engine Oil
| 2W***53 | Cooler Group-Filter Base & Eng Oil | 1 |
2w6954 Cooler Gp-Filter Base & Engine Oil
| 2W***54 | Cooler Group-Filter Base & Eng Oil | 1 |
6a9622 Cooler Gp-Hydraulic Oil
| 6A***22 | Cooler Group-Hydraulic Oil | 1 |
7n4701 Fan Gp-Blower
| 7N***01 | Fan Group-Blower | 1 |
4w1340 Regulator & Housing Gp
| 4W***40 | Housing & Regulator Group; Housing And Regulator Group | 1 |
2w6779 Lines Gp-Water
| 2W***79 | Lines Group-Water | 1 |
5e7566 Lines Gp-Water
| 5E***66 | Lines Group-Water | 1 |
5e6643 Lines Gp-Water
| 5E***43 | Lines Group-Water | 1 |
8n4112 Lines Gp-Water
| 8N***12 | Lines Group-Water; -Bypass Relief | 1 |
7n5909 Pump Gp-Water
| 7N***09 | Pump Group-Water; Water Pump Group | 1 |
2w8001 Pump Gp-Water*R
| 2W***01 | Pump Group-Water | 1 |
1w4557 Radiator Gp
| 1W***57 | Radiator Group; Radiator Group | 1 |
4c1827 Radiator Gp-Part 2 Of 2
| 4C***27 | Radiator Group | 1 |
4c1827 Radiator Gp-Part 1 Of 2
| 4C***27 | Radiator Group | 1 |
Electrical System
9g9813 Alarm Gp
| 9G***13 | Alarm Group; -Action-Action, Engine Overspeed | 1 |
4c1825 Battery & Wiring Gp-Part 3 Of 4
| 4C***25 | Battery & Wiring Group | 1 |
4c1825 Battery & Wiring Gp-Part 1 Of 4
| 4C***25 | Battery & Wiring Group | 1 |
4c1825 Battery & Wiring Gp-Part 4 Of 4
| 4C***25 | Battery & Wiring Group | 1 |
4c1825 Battery & Wiring Gp-Part 2 Of 4
| 4C***25 | Battery & Wiring Group | 1 |
6w5798 Door Gp-Battery
| 6W***98 | Door Group-Battery | 1 |
3v0327 Door Gp-Battery
| 3V***27 | Door Group-Battery | 1 |
4c1826 Lighting Gp-Part 2 Of 2
| 4C***26 | Lighting Group | 1 |
4c1826 Lighting Gp-Part 1 Of 2
| 4C***26 | Lighting Group | 1 |
6w7071 Lighting Gp-Part 2 Of 2
| 6W***71 | Lighting Group-2 Lamp; Lighting Gp-Auxiliary Cab | 1 |
6w7071 Lighting Gp-Part 1 Of 2
| 6W***71 | Lighting Group-2 Lamp; Lighting Gp-Auxiliary Cab | 1 |
5e6665 Lighting Gp-Road
| 5E***65 | Lighting Group-Road | 1 |
5e6671 Sensor Gp (Back-Up)
| 5E***71 | Sensor Group | 1 |
7n0718 Switch As-Disconnect
| 7N***18 | Switch As-Disconnect; -Battery-Ground Level | 1 |
5e6664 Wiring Gp-Cab
| 5E***64 | Wiring Group-Cab | 1 |
8v1182 Wiring Gp-Cab
| 8V***82 | Wiring Group-Cab | 1 |
Engine Arrangement
4c1821 Engine Ar-Part 1 Of 2
| 1N***36 | Camshaft Group-Single; Single Camshaft Group | 1 |
| 1P***44 | Breather Group | 1 |
| 1W***72 | Balancer Group; Balancer Group | 1 |
4c1821 Engine Ar-Part 2 Of 2
| 1W***58 | Lines Group-Turbocharger Oil; Turbocharger Oil Lines Group | 1 |
| 1W***42 | Lines Group-Air; Air Lines Group | 1 |
| 2P***84 | Pump Group-Engine Oil; Engine Oil Pump Group | 1 |
Frame And Body
5e6667 Canopy Gp
| 5E***67 | Canopy Group | 1 |
5e6670 Counterweight Gp
| 5E***70 | Counterweight Group | 1 |
4c1742 Fender Gp-Rear
| 4C***42 | Fender Group-Rear | 1 |
8v1076 Firewall Gp
| 8V***76 | Firewall Group | 1 |
4c1835 Frame Gp
| 4C***35 | Frame Group | 1 |
5e7571 Frame Gp-Front
| 5E***71 | Frame Group-Front | 1 |
5e6660 Frame Gp-Front
| 5E***60 | Frame Group-Front | 1 |
5e6659 Frame Gp-Front
| 5E***59 | Frame Group-Front | 1 |
4c1822 Guard Gp-Radiator
| 4C***22 | Guard Group-Radiator | 1 |
5e6662 Hitch Gp (Osc)
| 5E***62 | Hitch Group | 1 |
4c1848 Hitch Gp-Articulated
| 4C***48 | Hitch Group-Articulated | 1 |
4c1823 Hood & Guard Gp
| 4C***23 | Hood & Guard Group | 1 |
4c1824 Ladder Gp
| 4C***24 | Ladder Group | 1 |
5e6661 Scraper Gp-Drum
| 5E***61 | Scraper Group-Drum | 1 |
5e7195 Support Gp-Axle
| 5E***95 | Support Group-Axle | 1 |
Fuel System
2w0262 Camshaft As
| 2W***62 | Camshaft As | 1 |
8v1072 Lines & Fuel Filter Gp
| 8V***72 | Filter & Lines Group-Primary Fuel | 1 |
1w9532 Filter Gp-Secondary
| 1W***32 | Filter Group-Fuel; Filter Gp-Secondary Fuel | 1 |
8n4124 Gov & Fuel Inj Pump Gp
| 8N***24 | Gov & Fuel Inj Pump Group | 1 |
7e7301 Gov & Fuel Inj Pump Gp
| 7E***01 | Gov & Fuel Inj Pump Group; Governor & Fuel Injection Pump Gp | 1 |
8n4123 Gov & Fuel Inj Pump Gp
| 8N***23 | Gov & Fuel Inj Pump Group; Governor And Fuel Injection Pump Group | 1 |
2w2410 Governor Gp-Part 2 Of 2
| 2W***10 | Governor Group | 1 |
2w4107 Governor Gp-Part 2 Of 2
| 2W***07 | Governor Group | 1 |
2w2410 Governor Gp-Part 1 Of 2
| 2W***10 | Governor Group | 1 |
2w4107 Governor Gp-Part 1 Of 2
| 2W***07 | Governor Group | 1 |
7c5160 Lines Gp-Fuel Injection
| 7C***60 | Lines Group-Fuel Injection | 1 |
7c5170 Lines Gp-Fuel Injection
| 7C***70 | Lines Group-Fuel Injection | 1 |
8n8170 Lines Gp-Fuel Injection
| 8N***70 | Lines Group-Fuel Injection | 1 |
4p9960 Lines Gp-Fuel Injection
| 4P***60 | Lines Group-Fuel Injection | 1 |
8n2772 Lines Gp-Fuel Injection
| 8N***72 | Lines Group-Fuel Injection; Fuel Injection Lines Group | 1 |
4p9950 Lines Gp-Fuel Injection
| 4P***50 | Lines Group-Fuel Injection | 1 |
2w0263 Pump Gp-Fuel Injection
| 2W***63 | Pump Group-Fuel Injection | 1 |
1w6539 Pump Gp-Fuel Injection
| 1W***39 | Pump Group-Fuel Injection | 1 |
1w3790 Pump Gp-Fuel Prime & Prim Fltr
| 1W***90 | Pump Group-Fuel Prime & Prim Filter; Fuel Priming Pump & Primary Filter Group | 1 |
7n6831 Pump Gp-Fuel Transfer
| 7N***31 | Pump Group-Fuel Transfer | 1 |
1w1695 Pump Gp-Fuel Transfer*R
| 1W***95 | Pump Group-Fuel Transfer | 1 |
2w4160 Fuel Transfer Pump & Mtg Gp
| 2W***60 | Pump Group-Fuel Transfer & Mtg; Fuel Transfer Pump And Mounting Group | 1 |
5e6631 Tank Gp-Fuel (230l)
| 5E***31 | Tank Group-Fuel | 1 |
5e6632 Tank Gp-Fuel (230l)
| 5E***32 | Tank Group-Fuel | 1 |
8n7276 Torque Control Gp
| 8N***76 | Torque Control Group | 1 |
Hydraulic System
4c1859 Cylinder & Mounting Gp
| 4C***59 | Cylinder & Mounting Group | 1 |
4v1446 Cylinder & Seal Gp
| 4V***46 | Cylinder & Seal Group | 1 |
3g5110 Cylinder Gp-Steer
| 3G***10 | Cylinder Group-Steering | 1 |
5e6644 Filter Gp-Oil
| 5E***44 | Filter Group-Oil | 1 |
5e7564 Lines Gp-Vibration
| 5E***64 | Lines Group | 1 |
5e7211 Lines Gp
| 5E***11 | Lines Group | 1 |
5e6639 Lines Gp-Vibration
| 5E***39 | Lines Group | 1 |
5e6651 Lines Gp (Steering)
| 5E***51 | Lines Group | 1 |
5e6654 Lines Gp-Brake
| 5E***54 | Lines Group-Brake | 1 |
8v9945 Lines Gp-Drain
| 8V***45 | Lines Group-Drain | 1 |
5e7395 Lines Gp-Propel-Part 2 Of 2
| 5E***95 | Lines Group-Propel | 1 |
5e7536 Lines Gp-Propel
| 5E***36 | Lines Group-Propel | 1 |
5e7395 Lines Gp-Propel-Part 1 Of 2
| 5E***95 | Lines Group-Propel | 1 |
5e6634 Lines Gp-Propel
| 5E***34 | Lines Group-Propel | 1 |
5e7569 Lines Gp (Steering)
| 5E***69 | Lines Group-Steering | 1 |
5e7404 Lines Gp-Steering
| 5E***04 | Lines Group-Steering | 1 |
5e6641 Motor Gp-Piston (Vibration)
| 5E***41 | Motor Group-Piston | 1 |
5e6638 Motor Gp-Piston (Slipper)
| 5E***38 | Motor Group-Piston | 1 |
5e6637 Motor Gp-Piston
| 5E***37 | Motor Group-Piston | 1 |
8v1110 Mounting Gp-Hydraulic Tank
| 8V***10 | Mounting Group-Hydraulic Tank | 1 |
5e6635 Pump Gp-Piston-Part 2 Of 2
| 5E***35 | Pump Group-Piston | 1 |
5e7561 Pump Gp-Piston-Part 1 Of 2
| 5E***61 | Pump Group-Piston | 1 |
5e7561 Pump Gp-Piston-Part 2 Of 2
| 5E***61 | Pump Group-Piston | 1 |
5e6635 Pump Gp-Piston-Part 1 Of 2
| 5E***35 | Pump Group-Piston | 1 |
4t3108 Tank & Filter Gp
| 4T***08 | Tank & Filter Group | 1 |
5e6642 Valve Gp-Divider
| 5E***42 | Valve Group-Divider | 1 |
Lubrication System
1p4244 Breather Gp
| 1P***44 | Breather Group | 1 |
2p6855 Filler Gp-Oil
| 2P***55 | Filler Group-Oil | 1 |
1w6399 Fumes Disposal Gp
| 1W***99 | Fumes Disposal Group; Fumes Disposal Group | 1 |
2p6491 Gauge Gp-Engine Oil Level
| 2P***91 | Gauge Group-Oil Level (Dipstick) | 1 |
2p6512 Lines Gp-Engine Oil
| 2P***12 | Lines Group-Engine Oil; Engine Oil Lines Group | 1 |
4w2448 Pump Gp-Engine Oil*R
| 4W***48 | Pump Group-Engine Oil; Pump Gp-Engine Oil Gear | 1 |
6i1346 Pump Gp-Engine Oil*R
| 6I***46 | Pump Group-Engine Oil | 1 |
6n2642 Pump Gp-Engine Oil
| 0S***90 | Bolt; (3/8-16x2in)(Clip Thru Spacer To Bracket As) | 1 |
| 1P***46 | Washer-Hard; (10.2x35x6-mm Thk) | 1 |
| 4P***20 | Pump Group-Engine Oil; Pump Group-Engine Oil | 1 |
2p1784 Pump Gp-Engine Oil
| 2P***84 | Pump Group-Engine Oil; Engine Oil Pump Group | 1 |
4p4020 Pump Gp-Engine Oil
| 4P***20 | Pump Group-Engine Oil; Pump Group-Engine Oil | 1 |
5c9434 Screen Gp
| 5C***34 | Screen Group; Test Screen Group | 1 |
Operator Station
8v1177 Adjuster Gp-Seat
| 8V***77 | Adjuster Group-Seat | 1 |
4c1847 Cab Gp-Part 2 Of 2
| 4C***47 | Cab Group | 1 |
4c1847 Cab Gp-Part 1 Of 2
| 4C***47 | Cab Group | 1 |
5e6666 Cab Gp
| 5E***66 | Cab Group | 1 |
5e6656 Control Gp-Forward & Reverse
| 5E***56 | Control Group | 1 |
5e6657 Control Gp-Forward & Reverse
| 5E***57 | Control Group | 1 |
2w0097 Drive Gp-Tachometer
| 2W***97 | Drive Group-Tachometer; Tachometer Drive Group | 1 |
5e6658 Gauge Gp
| 5E***58 | Gauge Group | 1 |
4c1834 Gauge Gp-Fuel
| 4C***34 | Gauge Group-Fuel | 1 |
5e6672 Gauge Gp-Tachograph
| 5E***72 | Gauge Group-Tachograph | 1 |
5e6668 Heater Gp-Cab
| 5E***68 | Heater Group-Cab | 1 |
4c1903 Installation Gp-Controls
| 4C***03 | Installation Group-Controls | 1 |
6c1679 Mirror Gp-Lh
| 6C***79 | Mirror Group-Lh | 1 |
8v1169 Mirror Gp-Rear View
| 8V***69 | Mirror Group-Rear View | 1 |
6c1315 Mirror Gp-Rh
| 6C***15 | Mirror Group-Rh | 1 |
8v1184 Mounting Gp-Cab
| 8V***84 | Mounting Group-Cab | 1 |
5e7699 Mounting Gp-Platform
| 5E***99 | Mounting Group-Platform | 1 |
8v1174 Panel Gp-Instrument
| 8V***74 | Panel Group-Instrument | 1 |
8v1173 Panel Gp-Instrument-Part 2 Of 2
| 8V***73 | Panel Group-Instrument; Instrument Panel Group | 1 |
8v1173 Panel Gp-Instrument-Part 1 Of 2
| 8V***73 | Panel Group-Instrument; Instrument Panel Group | 1 |
6v6561 Wiper Pivot Gp-Sensor
| 6V***61 | Pivot Group-Wiper Arm; (Wiper Arm) | 1 |
4c1745 Platform Gp
| 4C***45 | Platform Group | 1 |
6c1239 Rops Gp-Part 2 Of 2
| 6C***39 | Rops Group | 1 |
6c1239 Rops Gp-Part 1 Of 2
| 6C***39 | Rops Group | 1 |
8v1176 Seat Gp
| 8V***76 | Seat Group | 1 |
5e6663 Seat Gp
| 5E***63 | Seat Group | 1 |
8v1175 Seat Gp-Adjustable
| 8V***75 | Seat Group-Adjustable | 1 |
8v1181 Support Gp-Seat
| 8V***81 | Support Group-Seat | 1 |
7n8001 Switch As
| 7N***01 | Switch As-Toggle; -Prelubrication Override-Crank Override | 1 |
9g7641 Switch Gp-Start
| 9G***41 | Switch Group-Start; -Engine, Key-Vims Service | 1 |
5e6655 Throttle Gp
| 5E***55 | Throttle Group | 1 |
9v9849 Visor Gp-Cab
| 9V***49 | Visor Group-Cab | 1 |
9c1517 Washer Gp
| 9C***17 | Washer Group | 1 |
9c1518 Washer Gp
| 9C***18 | Washer Group | 1 |
9c1519 Washer Gp
| 9C***17 | Washer Group | 1 |
| 9C***18 | Washer Group | 1 |
| 9C***19 | Washer Group | 1 |
9c1521 Washer Gp
| 9C***21 | Washer Group-Windshield; Washer Gp-Nippondenso | 1 |
9c1522 Washer Gp
| 9C***20 | Washer Group-Windshield | 1 |
| 9C***21 | Washer Group-Windshield; Washer Gp-Nippondenso | 1 |
| 9C***22 | Washer Group-Windshield | 1 |
9c1520 Washer Gp
| 9C***20 | Washer Group-Windshield | 1 |
6w7333 Washer & Wiper Gp-Rear
| 6W***33 | Wiper & Washer Group | 1 |
6w7332 Washer & Wiper Gp
| 6W***32 | Wiper & Washer Group | 1 |
7x1982 Wiper Gp
| 7X***82 | Wiper Group; Wiper Group (Robert Bosch) | 1 |
7x1983 Wiper Gp
| 7X***83 | Wiper Group; Wiper Group (Nippondenso) | 1 |
3t7064 Wiper Gp-Sensor
| 3T***64 | Wiper Group-Sensor | 1 |
| 7X***82 | Wiper Group; Wiper Group (Robert Bosch) | 1 |
| 7X***83 | Wiper Group; Wiper Group (Nippondenso) | 1 |
Power Train
4c1739 Axle Gp
| 4C***39 | Axle Group | 1 |
5e6633 Coupling Gp-Pump
| 5E***33 | Coupling Group-Pump | 1 |
4c1920 Differential Gp
| 4C***20 | Differential Group | 1 |
6s6342 Differential Gp
| 6S***42 | Differential Group; Differential Group-No Spin-------------- | 1 |
4c1678 Differential Gp
| 4C***78 | Differential Group | 1 |
5e6647 Drum Gp-Front
| 5E***47 | Drum Group-Front | 1 |
5e6646 Reducer Gp-Speed
| 5E***46 | Reducer Group | 1 |
5e7567 Reducer Gp-Speed
| 5E***67 | Reducer Group | 1 |
5e6929 Reducer Gp-Speed
| 5E***29 | Reducer Group | 1 |
4c1740 Wheel & Final Drive Gp
| 4C***40 | Wheel & Final Drive Group | 1 |
4v7927 Wheel & Final Drive Gp
| 4V***27 | Wheel & Final Drive Group; Final Drive And Brake Wheel Group | 1 |
5e7212 Wheel Gp (2 Required)
8v6939 Wheel Gp-Final Drive & Brake
| 8V***39 | Wheel Group-Final Drive & Brake | 1 |
Service Equipment And Supplies
5e6673 Decal Gp
| 5E***73 | Decal Group | 1 |
5e6674 Tool Gp
| 5E***74 | Tool Group | 1 |
Starting System
9x4453 Starting Motor Gp-Electric-24 Volt
| 9X***53 | Starting Motor Group-Electric | 1 |
8n2145 Starting Motor Gp-Electric
| 8N***45 | Starting Motor Group-Electric; Electric Starting Motor Group--24 Volt | 1 |
1w3851 Starting Motor Gp-Electric
| 1W***51 | Starting Motor Group-Electric | 1 |
4n3181 Starting Motor Gp-Electric*R
| 3T***05 | Starting Motor Group-Electric; Starting Motor Group (Robert Bosch) | 1 |
| 4N***81 | Starting Motor Group-Electric | 1 |
| 8C***51 | Starting Motor Group-Electric; Starting Motor Gp-Electric-Delco-Remy | 1 |
9x4447 Starting Motor Gp-Electric-24 Volt
| 9X***47 | Starting Motor Group-Electric; Electric Starting Motor Group (Nippondenso) | 1 |
8c3651 Starting Motor Gp-Electric
| 8C***51 | Starting Motor Group-Electric; Starting Motor Gp-Electric-Delco-Remy | 1 |
8c3650 Starting Motor Gp-Electric
| 8C***50 | Starting Motor Group-Electric | 1 |
3t4586 Starting Motor Gp-Electric
| 3T***86 | Starting Motor Group-Electric | 1 |
| 8C***50 | Starting Motor Group-Electric | 1 |
| 8N***45 | Starting Motor Group-Electric; Electric Starting Motor Group--24 Volt | 1 |
3t6305 Starting Motor Gp-Electric
| 3T***05 | Starting Motor Group-Electric; Starting Motor Group (Robert Bosch) | 1 |
1005045 Alternator Gp-Charging-24 Volt, 50 Ampere
| 10***45 | Alternator Group-Charging; (Nippondenso) | 1 |
4w1489 Alternator Gp-Charging
| 4W***89 | Alternator Group-Charging | 1 |
3t1888 Alternator Gp-Charging
| 3T***88 | Alternator Group-Charging; Alternator Group Delco-Remy 24 Volt, 50 Ampere | 1 |
3e7578 Alternator Gp-Charging*R
| 3E***78 | Alternator Group-Charging; Charging Alternator Group (Delco Remy) | 1 |
1005046 Alternator Gp-Charging-24 Volt, 50 Ampere
| 10***46 | Alternator Group-Charging; -24-Volt, 50-Ampere | 1 |
6t7223 Alternator Gp-Charging
| 6T***23 | Alternator Group-Charging; Alternator Group-Nippondenso -- 24 Volt, 50 Ampere | 1 |
1005047 Alternator Gp-Charging-24 Volt, 50 Ampere*R
| 10***45 | Alternator Group-Charging; (Nippondenso) | 1 |
| 10***46 | Alternator Group-Charging; -24-Volt, 50-Ampere | 1 |
| 10***47 | Alternator Group-Charging; -24-Volt, 50-Ampere | 1 |
9g9538 Alternator Gp-Charging
| 9G***38 | Alternator Group-Charging | 1 |
5s9088 Alternator Gp-Charging*R
| 3E***78 | Alternator Group-Charging; Charging Alternator Group (Delco Remy) | 1 |
| 3T***88 | Alternator Group-Charging; Alternator Group Delco-Remy 24 Volt, 50 Ampere | 1 |
| 5S***88 | Alternator Group-Charging | 1 |
Steering System
4c1828 Column Gp-Steering-Adjustable
| 4C***28 | Column Group-Steering-Adjustable | 1 |
4c1744 Control Gp-Steering
| 4C***44 | Control Group-Steering | 1 |
5e6652 Valve Gp-Steering
| 5E***52 | Valve Group | 1 |
Vibratory System
5e6640 Pump Gp-Piston (Vibration)
| 5E***40 | Pump Group-Piston | 1 |
5e7565 Pump Gp-Piston (Vibration)
| 5E***65 | Pump Group-Piston | 1 |
5e6649 Vibrator Gp
| 5E***49 | Vibrator Group | 1 |
5e6650 Vibrator Gp
| 5E***50 | Vibrator Group | 1 |
5e6648 Vibrator Gp
| 5E***48 | Vibrator Group | 1 |
CP-653 serial number reference
On the CP-653 the PIN/serial plate is a riveted metal tag on the main frame, usually near the articulation joint or on the frame rail close to the operator's platform. Check there first, then the frame area near the engine compartment if it is not visible. The plate reads as an 8-character PIN: the first three characters are the letter/digit prefix (e.g. 7JD) identifying the model and build series, followed by a 5-digit sequence number unique to that unit. Match the 3-character prefix against the model before using the sequence number to narrow down build date or running changes, and confirm turbocharged vs naturally aspirated 3304 fitment from the engine's own tag since both were used across this family.
| Prefix | Identifies | Notes |
|---|---|---|
| 7JD | CP-653 padfoot vibratory soil compactor, shared prefix with CS-653 smooth-drum sibling | Parts and service literature file this prefix under a combined CS-643, CP-643, CS-653, CP-653 listing rather than a per-model code, so 7JD covers both drum types on the 653-size chassis. Engine is the Cat 3304 diesel; the 3304B turbocharged version is also cited for this same family, so confirm which block your unit carries off the engine tag rather than assuming. No CP-653C or later-letter version of this model was found, so there is no successor generation to confuse this prefix with. Exact PIN start/end serial breakpoints are not published anywhere public; confirm the specific range with a dealer SIS lookup. |
Frequently asked questions
What engine powers the Caterpillar CP-653?
The CP-653 runs a Caterpillar 3304 turbocharged diesel - an inline four-cylinder engine of roughly 7.0 L displacement rated at approximately 100 kW (134 hp) gross. It uses a mechanical fuel-injection system, not the electronic engine controls fitted to later Cat compactors.
What is the operating weight of the CP-653?
Operating weight runs approximately 18.5 tonnes (about 40,800 lb) for the padfoot CP-653 per factory spec sheets. Its smooth-drum CS-653 sibling on the same chassis runs slightly lighter, around 17.1 tonnes (37,700 lb). Actual weight varies with tires, ballast, and cab or canopy fitment - verify against your specific unit's build sheet.
What replaced the Caterpillar CP-653?
Caterpillar never published a direct one-for-one replacement listing for the CP-653. The single-drum family it belonged to was phased out as Caterpillar moved this weight class onto later single-drum soil compactors (the CS/CP-563 through CS/CP-663 range and their successors), which added electronic engine controls and cab comfort features the CP-653 lacked. For a serial-specific factory cross-reference, check with a Cat dealer.
What CP-653 owners discuss
What engine and size class is the Cat CP-653, and does it share parts with later Cat compactors?
The CP-653 runs the Cat 3304 diesel, rated near 100 kW (134 hp) at rated speed, in a self-propelled single-drum articulated frame with a padfoot shell (the CS-653 is the same chassis with a smooth drum instead). Operating weight varies by configuration: roughly 18,500 kg (about 40,800 lb) with pad shells fitted, closer to 17,100 kg (about 37,700 lb) in smooth-drum trim. Drum width runs about 2.2 m (86.6-86.7 in), vibration frequency is about 32.5 Hz, and high-amplitude centrifugal force falls in the 218-222 kN (48,990-49,000 lbf) range. This puts the 653 in the same size bracket Cat later filled with its 563/663-series soil compactors, but those later machines moved to a different engine family. Don't assume parts interchange across generations without checking the parts book against your unit's serial number.
What are the classic complaints about the 3304 in a machine like this?
Owners of 3304-powered equipment consistently report the same handful of headaches: hard starting or a no-start after the machine has sat idle for weeks, usually traced to sticking injectors or a gummed-up injection pump; injection pump timing that creeps out of spec over time, showing up as black smoke, flat power, and low turbo boost; and coolant-side overheating from a plugged radiator core or a tired water pump. None of it is exotic - keep fuel clean, cycle the machine regularly, and stay ahead of cooling system service, and the engine tends to go the distance.
The vibration cuts in and out, or feels rough - what's usually behind it?
Two different fault families produce similar symptoms. An intermittent vibration on/off condition usually lives in the simple wiring and switch/relay circuit that engages the vibratory pump - this generation predates electronic vibration sensors, so check fuses, corroded connectors, and relay condition before anything more serious. A harsh, grinding feel, or a machine that won't reach full vibrations-per-minute, points the other direction: worn eccentric-weight shaft bearings, low exciter oil, or a drum isolator/mount that has broken down. Check exciter oil level and drum mounts before assuming a bearing teardown is needed.
What wear shows up on the drum and pads over time?
Padfoot shells wear at the pad tips first, especially when compacting abrasive or rocky fill, and the shell attachment hardware works loose under vibration if it isn't re-torqued on schedule. Clay and wet fines pack between the pads and load up the scraper bar - a scraper set too tight or too loose either scores the shell or lets the drum clog. Weeping grease or oil at the drum end plates is the early warning sign of drum bearing wear, well before any play shows up by hand.
Any known issues with the articulation joint or propel drive?
The oscillation/articulation joint bushings and pins wear with hours and show up as play or a clunk when the machine steers, and missed grease intervals accelerate it. On the propel side, a hydrostatic pump or motor that has lost internal efficiency shows up as sluggish or one-sided propel power rather than a hard failure - it fades in gradually rather than quitting outright. Because this affects steering and propel control on a large articulated machine, have your dealer verify articulation joint play and propel pump output against spec before returning a suspect unit to service.
Does the CP-653 have the electronic fault codes or sensors later Cat compactors have?
No - this generation is pre-electronic-monitoring. There is no diagnostic display or fault-code system to lean on, so troubleshooting comes down to basic checks: fuses, grounds, switch continuity, and gauge readings. Treat any intermittent electrical complaint as a wiring and connector inspection job first, not a sensor replacement.
What should I check before buying a used CP-653?
Given how long this model has been out of production, assume the specific unit has an unknown maintenance history and inspect accordingly: engine compression and exhaust smoke color under load, injector condition and cold/overnight starting behavior, drum end plates for grease or oil weep (a bearing wear sign), exciter noise and vibrations-per-minute at both amplitude settings, articulation joint play, tire condition and wear pattern (20.5x25 tires), and the hour meter reading cross-checked against overall wear rather than taken at face value. Because the vibratory, propel, and steering systems all tie into operator safety on a machine this size, have your dealer verify hydraulic pressures and articulation/steering function before putting a used unit to work.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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