Caterpillar CB-525
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar CB-525 is a tandem/combination paving compactor: a single smooth steel vibratory drum up front (about 1.70 m / 67 in wide) paired with a dual pneumatic-tire rear axle for finish rolling. It carries a naturally aspirated, air-cooled Deutz F5L912 five-cylinder diesel of roughly 4.7 L displacement, rated near 83 hp (62 kW) gross, driving the machine through a hydrostatic transmission - not a Caterpillar-branded engine. Operating weight runs about 13,199 kg (29,101 lb), varying somewhat with ballast and tire choice. Caterpillar built the model in the late 1980s as part of the CB-500 series (CB-521 through CB-525), inherited through its 1987 acquisition of the Raygo/CMI compaction business, and later carried the design forward as an updated "B" series (CB-523B, CB-525B) with the same Deutz-powered drum-and-tire layout.
Across the series the core recipe stayed the same: air-cooled Deutz power, hydrostatic drive, one vibratory drum and one pneumatic axle. The B-series update refined hydraulics, controls, and serviceability rather than swapping engines or configuration, so parts and service knowledge carry across most of the production run. No CB-525 variant has electronic engine control - diagnosis is mechanical and manual, which is exactly why the machine still has a following. In the used and parts market, the CB-525's value is its simplicity: no ECM to fail, a widely supported industrial Deutz engine with strong aftermarket parts availability, and a rugged hydrostatic driveline that keeps running well past the point a newer, electronically controlled compactor would need dealer diagnostics. Buyers mainly weigh drum bearing and hydrostatic pump condition, since those two areas carry the highest rebuild cost.
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 CB-525 specifications
Engine
| Engine model | F5L912 naturally aspirated, air-cooled diesel (single generation documented for this model) |
| Gross power | 83 hp (61.9 kW) |
| Net power | Not published for this model |
| Displacement | 4.7 L (286.9 cu in) |
| Cylinders | 5, inline, air-cooled |
| Emissions tier | Not published; naturally aspirated air-cooled design predates modern emissions-tier certification |
Weights
| Operating weight | 13,199 kg (29,101 lb) — single configuration documented |
| Shipping weight | Not published |
| Ground pressure | Not published |
Dimensions
| Overall width | 1.96 m (6.44 ft) |
| Height to top of cab | 3.00 m (9.85 ft) |
| Overall length | Not reliably published — available source figures for this dimension are inconsistent and appear truncated; verify with dealer |
| Drum width | 1.70 m (67 in) |
| Drum diameter | 1.35 m (53.2 in) |
| Tire size | 17/80 R24 |
| Wheelbase / ground clearance | Not published |
Performance
| Max travel speed | 13.0 km/h (8.1 mph) |
| Vibration frequency | 42 Hz (2,520 vpm) |
| Centrifugal force, high amplitude | 103.4 kN (23,260 lbf) |
| Gradeability | Not published |
Service capacities (summary)
| Fuel tank | 100.3 L (26.5 gal) |
| Hydraulic system | 95.0 L (25.1 gal) |
| Engine oil | 12.1 L (3.2 gal) |
| Cooling system | Not applicable — air-cooled engine, no liquid cooling circuit |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
CB-525 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase, with filter (Deutz F5L 912, 5-cyl. air-cooled diesel) | 12.1 L (3.2 US gal) | Cat DEO (Diesel Engine Oil), API CD/CE-class multigrade. Grade by ambient air temperature per Cat's standard chart: SAE 10W-30 for climates from about -18 C to 40 C (0 F to 104 F); SAE 15W-40 for warmer bands, roughly -9.5 C to 50 C (15 F to 122 F). Use the heaviest grade that still allows a clean cold start. |
| Cooling system | Not applicable - Deutz F5L 912 is a direct-injection, air-cooled engine with no liquid coolant circuit. No antifreeze/coolant fill is listed for this power unit. | Not applicable (air-cooled engine). Engine oil cooler, if fitted, shares the crankcase fill. |
| Fuel tank | 100.3 L (26.5 US gal) | No. 2-D diesel fuel for normal operation; switch to No. 1-D (or a winter-blended No. 2-D) in cold weather to keep pour/cloud point below ambient and avoid fuel waxing. |
| Hydraulic system and tank (propel + vibratory drive, single hydrostatic circuit - no separate transmission, final drive, or axle compartments on this drum-driven roller) | 95.0 L (25.1 US gal), system total including tank | Cat TDTO (Transmission/Drive Train Oil) is the standard fill for this hydrostatic circuit; Cat HYDO is an acceptable alternate where specified. Viscosity selected by ambient temperature the same way as engine oil - lighter monograde/multigrade for cold starts, heavier for sustained high heat. Do not mix TDTO families beyond a small top-off percentage. |
| Transmission / final drive / axle compartments | Not applicable - the CB-525 has no separate mechanical transmission, final drive, or axle/differential housings. Both drums are driven directly by hydraulic motors fed from the single hydraulic reservoir above. | Not applicable; see hydraulic system entry. |
| Drum vibratory bearing housings and chassis grease points (spec only, no fill quantity published) | Spec only - no published fill volume | Cat TDTO for the vibratory bearing housing in each drum, matched to the same climate-based viscosity guidance as the hydraulic system. Cat multipurpose grease (NLGI 2, EP/moly-fortified) for articulation joint, drawbar, and cylinder pin grease points; shorten intervals in wet or abrasive paving conditions. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar CB-525 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the CB-525 beyond the schedule
Predictive maintenance & fluid analysis
Sample engine oil, hydraulic fluid, and hydrostatic drive oil at each service interval to track the Deutz F5L912's ring and bearing wear and the hydrostatic pump's internal condition before failure. Because the engine is air-cooled, cylinder head temperature and blower belt tension substitute for coolant analysis - watch for scorched paint or discoloration near the cylinders as an early overheating flag. Monitor hydrostatic case-drain flow and drum exciter bearing temperature; rising case-drain flow signals pump or motor wear well before loss of drive power.
Corrective & common repairs
Most CB-525 downtime traces to a few recurring areas: drum bearing seal leaks that let water and oil mix and score the eccentric shaft, cracked or clogged blower shrouding that starves the air-cooled Deutz F5L912 of cooling air, and worn rear-axle pneumatic tire bearings from the compactor's constant vibration loading. Hydrostatic drive sluggishness usually means a worn charge pump or contaminated fluid, not a bad motor - flush and refill before condemning components. Because there's no ECM, diagnosis stays manual: pressure gauges, compression tests, and visual inspection replace fault codes.
Overhaul & rebuild points
Plan a major rebuild window in the 4,000-6,000 hour range: the Deutz F5L912 typically needs a top-end or full inframe overhaul - rings, valves, injector pump recalibration - by then, and the hydrostatic pump-and-motor set often needs exchange or rebuild for the same wear reasons. Drum shell, bearings, and exciter weight assemblies wear together, so inspect and replace them as a set rather than piecemeal. Rear axle final drives and articulation pins and bushings are the other high-wear items worth budgeting for at overhaul time.
Seasonal & environment servicing
Cold starts stress the naturally aspirated, air-cooled Deutz F5L912 hard - use a block or oil-pan heater and a starting aid below freezing, and switch to a lighter-viscosity engine oil for winter service. Drain the drum's water spray/wetting system fully after each freezing-season shift to stop nozzle and tank cracking. In hot, dusty paving environments, clean the blower intake screen and cooling fins daily - the air-cooled design has no radiator to flush, but is more sensitive to fin and shroud blockage than a liquid-cooled engine.
CB-525 common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 081-4172 | Filter Element-Water | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
CB-525 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Engine Oil Pressure lamp (red, wrench/oil-can symbol) | Engine oil pressure switch has opened, signaling pressure below the safe threshold on the Deutz F5L912 | Low oil level, worn oil pump, clogged suction screen, or a failed pressure switch | Stop the engine immediately, check oil level and condition, then verify the switch and wiring before restart |
| Alternator/Charge lamp (battery symbol) | Charging circuit is not producing voltage above battery voltage | Broken or slipping fan/alternator belt, failed alternator, or a loose/corroded wiring connection | Check belt condition and tension, then check charging voltage at the battery with the engine running |
| Hydraulic Oil Temperature lamp | Hydrostatic system oil temperature switch has tripped on high temperature | Low hydraulic fluid level, a plugged oil cooler, or a stuck temperature switch | Idle the machine down, check fluid level, and inspect the cooler core for blockage before resuming work |
| Air Cleaner Restriction indicator | Air filter restriction switch shows intake vacuum past the service limit | Dirty or clogged primary air filter element | Inspect and clean or replace the air filter element, then reset the restriction indicator |
| Hydraulic Filter Bypass indicator | Return-line hydraulic filter bypass valve has opened, meaning oil is bypassing the filter element | Clogged filter element or cold, thick oil at startup | Let the machine warm up and recheck; replace the filter element if the indicator stays on after warm-up |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
CB-525 attachments & work tools
Compaction drum (primary work tool)
The CB-525 carries a single smooth steel vibratory drum at the front, about 1700 mm (67 in) wide and roughly 1350 mm (53 in) in diameter. The drum is fixed to the frame, not a swappable quick-coupler tool, so compaction performance depends on drum size and vibration settings rather than interchangeable work tools.
Rear axle / propulsion tires
Steering and propulsion at the rear use a dual pneumatic-tire axle, reported at 17/80 R24 in spec-sheet data for this model. This drum-plus-tire layout places the CB-525 in the combination roller class rather than the double-steel-drum tandem asphalt roller class; treat the tire size as indicative and confirm against the specific serial-range spec sheet.
Vibratory system (no separate attachment)
Vibration is generated by an internal eccentric weight in the drum, driven off the machine's own hydraulic system rather than a bolt-on kit. One published spec sheet lists roughly 42 Hz frequency with a high-amplitude centrifugal force in the 100 kN (about 23,000 lb) class; exact frequency/amplitude steps vary by configuration, so confirm with a dealer for the exact serial range.
Water spray system
An integral water/spray system for the drum is standard on compactors of this family, drawing on a hydraulically driven pump as reflected in the hydraulic-system parts grouping shared across the CB-521 through CB-525 line. This is factory-installed ancillary equipment rather than an optional attachment.
Operator protection (ROPS / cab)
The platform is fitted with a ROPS structure as standard; spec listings for this model include a distinct overall height to top of cab, indicating an enclosed operator cab was offered as a factory configuration alongside the open ROPS canopy. Exact cab options and glazing/heater content are not documented in available public sources.
Engine / power train configuration
The CB-521 through CB-525 family (parts group covering 6RD/6TD serial prefixes) is documented as using a Deutz F5L912 air-cooled diesel, rated in the low-80 hp (about 62 kW) gross class. This engine reference applies to the CB-521; whether the CB-525 (top of the five-model range) uses an identical or uprated version of the same engine is not documented, so verify against the specific serial number.
Later 'B' series variant
Service-manual listings reference a CB-523B and CB-525B as a second-generation update to this numeric range, implying the CB-525 platform was carried forward into a later series. Engine, drum, and attachment specifics for the B-series machines are not available in public documentation; verify configuration and any attachment compatibility directly with a Cat dealer using the machine's serial number.
Ballast and other options
Ballast kits, edge/curb-cutting attachments, and other bolt-on work tools are not documented for this model. Given its age and limited factory literature, check the original operation and maintenance manual or a Cat dealer parts lookup by serial number for confirmed options.
All CB-525 assemblies by section
Every catalogued assembly group for the Caterpillar CB-525. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
5e7589 Air Cleaner Gp
| 5E***89 | Air Cleaner Group | 1 |
5e7590 Intake Gp-Air
| 5E***90 | Air Cleaner Group | 1 |
5e7588 Exhaust Gp
| 5E***88 | Exhaust Group | 1 |
5e7587 Exhaust Gp
| 5E***87 | Exhaust Group | 1 |
Braking System
1g3670 Brake Gp-Parking (Unlock)
| 1G***70 | Brake Group-Parking | 1 |
5e7641 Lines Gp-Brake
| 5E***41 | Lines Group-Brake | 1 |
5e7640 Lines Gp-Brake
| 5E***40 | Lines Group-Brake | 1 |
5e7642 Lines Gp-Brake
| 5E***42 | Lines Group-Brake | 1 |
Cooling System
5e7616 Lines Gp-Cooler
| 5E***16 | Lines Group-Cooler | 1 |
5e7617 Lines Gp-Water
| 5E***17 | Lines Group-Water | 1 |
Electrical System
849059 Box Gp
| 08***59 | Box Group-Instrument | 1 |
7r2072 Box Gp
| 7R***72 | Box Group-Instrument | 1 |
5e7702 Electrical Gp
| 5E***02 | Electrical Group | 1 |
5e7744 Horn Gp-Electric
| 5E***44 | Horn Group-Electric | 1 |
5e7745 Horn Gp-Electric
| 5E***45 | Horn Group-Electric | 1 |
831124 Kit-Warning
| 08***37 | Button; (Warning Lights) | 1 |
| 08***24 | Kit-Warning | 1 |
| 08***41 | Wiring Harness; (Warning) | 1 |
1g3826 Light Gp-Warning
| 08***20 | Washer | 3 |
| 08***90 | Orange Control Lamp; (Diff Control) | 1 |
| 08***32 | Cord Eye | 1 |
852245 Lamp Gp
| 08***45 | Lamp Group | 1 |
852638 Lamp Gp
| 08***38 | Lamp Group | 1 |
1081029 Lamp Gp-Rotating Warning
| 10***29 | Lamp Group-Warning Beacon; (24-Volt, Amber) | 1 |
826747 Light Gp
| 08***47 | Lighting Group; (Rotating Beacon) | 1 |
1097259 Lighting Gp-Beacon
| 10***29 | Lamp Group-Warning Beacon; (24-Volt, Amber) | 1 |
| 10***59 | Lighting Group-Beacon | 1 |
848330 Module Ar
| 08***30 | Module Ar | 1 |
1g3854 Mounting Gp-Tachometer
| 1G***54 | Mounting Group | 1 |
1088201 Mounting Gp-Switch
| 10***01 | Mounting Group-Switch | 1 |
814135 Regulator As
| 08***35 | Regulator As | 1 |
1g3685 Warning Gp-Back-Up
| 1G***85 | Warning Group-Backup | 1 |
5e7017 Wiring Gp
| 5E***17 | Wiring Group | 1 |
5e7014 Wiring Gp-Console
| 5E***14 | Wiring Group; Wiring Gp-Console | 1 |
5e7015 Wiring Gp-Console
| 5E***15 | Wiring Group; Wiring Gp-Console | 1 |
1g4177 Wiring Gp
| 1G***77 | Wiring Group | 1 |
5e7012 Wiring Gp-Console
| 5E***12 | Wiring Group; Wiring Gp-Console | 1 |
5e7009 Wiring Gp-Console
| 08***43 | Counter-Hour | 1 |
| 08***85 | Blinker Central | 1 |
| 08***58 | Meter; (Vib. Tachometer) | 1 |
5e7263 Wiring Gp-Console
| 5E***63 | Wiring Group-Console | 1 |
5e7701 Wiring Gp-Instrument
| 5E***01 | Wiring Group-Instrument | 1 |
5e7700 Wiring Gp-Instrument
| 5E***00 | Wiring Group-Instrument | 1 |
5e7711 Wiring Gp-Main
| 5E***11 | Wiring Group-Main | 1 |
5e7715 Wiring Gp-Main
| 5E***15 | Wiring Group-Main | 1 |
5e7713 Wiring Gp-Main
| 5E***13 | Wiring Group-Main | 1 |
5e5122 Wiring Gp-Pivot
| 5E***22 | Wiring Group-Pivot | 1 |
Engine Installation
5e7586 Engine Gp
| 5E***86 | Engine Group | 1 |
5e7585 Support Gp-Engine
| 5E***85 | Support Group-Engine | 1 |
Frame And Body
1g4174 Articulation Gp
| 1G***74 | Articulation Group | 1 |
| 5E***22 | Wiring Group-Pivot | 1 |
| 5E***06 | Pivot Group-Steering | 1 |
5e7742 Ballast Gp
| 5E***42 | Ballast Group | 1 |
5e7723 Canopy Gp
| 5E***23 | Canopy Group | 1 |
5e7724 Canopy Gp
| 5E***24 | Canopy Group | 1 |
5e7652 Frame Gp (Front)
| 5E***52 | Frame Group | 1 |
5e7650 Frame Gp
| 5E***50 | Frame Group | 1 |
5e7706 Pivot Gp-Steering (Offset Articulation)
| 5E***06 | Pivot Group-Steering | 1 |
5e7656 Pivot Gp-Steering
| 5E***56 | Pivot Group-Steering | 1 |
5e7655 Scraper Gp-Drum (Rear)
| 5E***55 | Scraper Group-Drum | 1 |
5e7654 Scraper Gp-Drum (Front)
| 5E***54 | Scraper Group-Drum | 1 |
5e7743 Shield Gp
| 5E***43 | Shield Group | 1 |
Fuel System
5e7591 Tank Gp-Fuel
| 5E***91 | Tank Group-Fuel | 1 |
5e7592 Tank Gp-Fuel
| 5E***92 | Tank Group-Fuel | 1 |
Hydraulic System
5e7638 Cylinder Gp-Hydraulic (Rear)(Chg 00)
| 5E***38 | Cylinder Group-Hydraulic | 1 |
5e7639 Cylinder Gp-Hydraulic (Rear)(Chg 00)
| 5E***39 | Cylinder Group-Hydraulic | 1 |
812443 Flange Gp
| 08***43 | Flange Group | 1 |
5e7710 Lifting Gp (Cab)
| 5E***10 | Lifting Group | 1 |
5e7637 Lines Gp (Suspension Lifting)
| 5E***37 | Lines Group | 1 |
5e7746 Lines Gp-Offset Articulation
| 5E***46 | Lines Group | 1 |
5e7746 Lines Gp (Offset Articulation)
| 5E***46 | Lines Group | 1 |
1g3662 Lines Gp-Control
| 1G***62 | Lines Group-Control | 1 |
5e7594 Lines Gp-Hydraulic (Traction)
| 5E***94 | Lines Group-Hydraulic | 1 |
5e7597 Lines Gp-Hydraulic (Traction)
| 5E***97 | Lines Group-Hydraulic | 1 |
5e7599 Lines Gp-Hydraulic (Traction)
| 5E***99 | Lines Group-Hydraulic | 1 |
5e7598 Lines Gp-Hydraulic (Traction)
| 5E***98 | Lines Group-Hydraulic | 1 |
5e7609 Lines Gp-Vibratory
| 5E***09 | Lines Group-Vibratory | 1 |
5e7718 Lines Gp (Vibratory)
| 5E***18 | Lines Group-Vibratory | 1 |
5e7273 Motor As-Hydraulic (Front Traction)
| 5E***73 | Motor As-Hydraulic | 1 |
5e6960 Motor As-Hydraulic (Traction-Front & Rear)
| 5E***60 | Motor As-Hydraulic | 1 |
5e7293 Motor As-Hydraulic (Rear Traction)
| 5E***93 | Motor As-Hydraulic | 1 |
5e7272 Motor As-Hydraulic (Front Traction)
| 5E***72 | Motor As-Hydraulic | 1 |
832077 Motor As-Hydraulic (Rear Traction)
| 08***77 | Motor Group-Hydraulic | 1 |
826396 Pump Gp-Hydraulic
| 08***96 | Pump Group-Cab Tilt | 1 |
1g3659 Pump Gp-Hydraulic
| 1G***59 | Pump Group-Hydraulic | 1 |
5e7601 Pump Gp-Traction
| 5E***01 | Pump Group-Traction | 1 |
5e7618 Tank Gp-Hydraulic
| 5E***18 | Tank Group-Hydraulic | 1 |
851684 Valve Gp (Flow Divider)
| 08***84 | Valve Group | 1 |
832582 Valve As
| 08***82 | Valve Group-Relief; (Pressure Limiter) | 1 |
Operator Station
5e7704 Cab Gp
| 5E***04 | Cab Group | 1 |
5e7719 Cab Gp (Rops)
| 5E***19 | Cab Group | 1 |
5e7721 Cab Gp (Rops)
| 5E***21 | Cab Group | 1 |
5e7705 Cab Gp
| 5E***05 | Cab Group | 1 |
0830710 Cab Gp
| 08***10 | Cab Group | 1 |
5e7645 Control Gp-Acceleration
| 5E***45 | Control Group-Acceleration | 1 |
5e7646 Control Gp-Forward/Reverse
| 5E***46 | Control Group-Forward/Reverse | 1 |
5e7648 Dash Gp-Instrument Control
| 5E***48 | Dash Group | 1 |
1g3843 Heater Gp
| 1G***43 | Heater Group | 1 |
5e7725 Heater Gp-Cab
| 5E***25 | Heater Group-Cab | 1 |
828678 Heater Gp-Cab
| 08***78 | Heater Group-Cab | 1 |
5e7649 Indicator Gp
| 5E***49 | Indicator Group | 1 |
5e7741 Insulation Gp-Heat
| 5E***41 | Insulation Group-Heat | 1 |
1103928 Module Gp
| 11***28 | Module Group-Speed & Vibratory | 1 |
5e7747 Panel Gp-Instrument
| 5E***47 | Panel Group-Instrument | 1 |
1283805 Seat Gp
| 12***05 | Seat Group | 1 |
1g3688 Seat Gp
| 1G***88 | Seat Group | 1 |
5e7707 Seat Gp
| 5E***07 | Seat Group | 1 |
1032113 Seat Gp
| 10***13 | Seat Group | 1 |
5e7708 Seat Gp
| 5E***08 | Seat Group | 1 |
1283804 Seat Gp
| 12***04 | Seat Group | 1 |
Power Train
5e7593 Coupling Gp-Pump
| 5E***93 | Coupling Group-Pump | 1 |
5e7619 Drum Gp-Front
| 5E***19 | Drum Group-Front | 1 |
5e7621 Drum Gp-Front
| 5E***21 | Drum Group-Front | 1 |
5e7625 Drum Gp-Rear
| 5E***25 | Drum Group-Rear | 1 |
5e7623 Drum Gp-Rear
| 5E***23 | Drum Group-Rear | 1 |
5e7729 Inflation Gp-Tire
| 5E***29 | Inflation Group-Tire | 1 |
832177 Stop Gp-Wheel
| 08***77 | Stop Group-Wheel | 1 |
0827040 Tire Gp-Smooth
| 08***40 | Tire Group; (Central) | 1 |
5e7521 Wheel As-Ribbed
| 5E***21 | Tire Group; (Scultured)(16-00-20xs) | 1 |
1g2973 Valve Gp-Solenoid
| 1G***73 | Valve Group-Solenoid | 1 |
1g3932 Wheel Gp-Ribbed
| 1G***32 | Wheel Group | 1 |
5e7728 Wheel Gp
| 5E***28 | Wheel Group | 1 |
1g3931 Wheel Gp
| 1G***31 | Wheel Group | 1 |
1g3929 Wheel Gp
| 1G***29 | Wheel Group | 1 |
5e7727 Wheel Gp
| 5E***27 | Wheel Group | 1 |
5e7622 Wheel Gp-Rear
| 5E***22 | Wheel Group-Rear | 1 |
Service Equipment And Supplies
1g3104 Film Gp-Portuguese
| 1G***04 | Film Group | 1 |
| 3E***55 | Film-Instruction | 1 |
| 3E***68 | Plate-Warning | 2 |
1g3103 Film Gp-Italian
| 1G***03 | Film Group | 1 |
| 3E***56 | Film-Instruction | 1 |
| 3E***69 | Plate-Warning | 2 |
1g3102 Film Gp-Spanish
| 1G***02 | Film Group | 1 |
| 3E***67 | Plate-Warning | 2 |
| 3E***42 | Film-Instruction | 1 |
1g3101 Film Gp-German
| 1G***01 | Film Group | 1 |
| 3E***51 | Plate-Warning | 2 |
| 5P***70 | Plate-Warning; (Read Omm) | 1 |
1g3877 Film Gp-French
| 1G***77 | Film Group | 1 |
| 3E***52 | Plate-Warning | 2 |
| 5P***67 | Plate-Warning; (Read Omm) | 1 |
5e7749 Decal Gp
| 5E***49 | Film Group | 1 |
Steering System
0815270 Block Gp-Control
| 08***70 | Block Group-Control | 1 |
5e7644 Control Gp-Steering
| 5E***44 | Control Group-Steering | 1 |
5e7643 Control Gp-Steering
| 5E***43 | Control Group-Steering | 1 |
5e7081 Cylinder Gp
| 5E***81 | Cylinder Group | 1 |
5e7636 Cylinder Gp-Hydraulic (Steering) (Chg 00)
| 5E***36 | Cylinder Group-Hydraulic | 1 |
5e7636 Cylinder Gp-Hydraulic (Steering) (Chg 02)
| 5E***36 | Cylinder Group-Hydraulic | 1 |
5e7635 Cylinder Gp-Hydraulic (Steering) (Chg 00)
| 5E***35 | Cylinder Group-Hydraulic | 1 |
5e7631 Lines Gp-Steering
| 5E***31 | Lines Group-Steering | 1 |
5e7630 Lines Gp-Steering
| 5E***30 | Lines Group-Steering | 1 |
826511 Pump Gp-Steering
| 08***11 | Pump Group-Steering | 1 |
5e7633 Pump Gp-Steering
| 5E***33 | Pump Group-Steering | 1 |
5e7634 Valve Gp (Distributor)
| 5E***34 | Valve Group | 1 |
0826900 Valve Gp
| 08***00 | Valve Group | 1 |
Vibratory System
0814446 Mat As
| 08***46 | Mat As | 1 |
814456 Motor Gp-Vibratory
| 08***56 | Motor Group | 1 |
5e7613 Motor Gp-Piston (Vibratory)
| 5E***13 | Motor Group-Piston | 1 |
5e7614 Motor Gp-Piston (Vibratory)
| 5E***14 | Motor Group-Piston | 1 |
813965 Pump As
| 08***65 | Pump Group | 1 |
832078 Pump Gp-Hydraulic (Vibratory)
| 08***78 | Pump Group-Hydraulic | 1 |
830420 Pump Gp-Hydraulic (Vibratory)
| 08***20 | Pump Group-Vibratory | 1 |
813326 Valve Gp-Pressure Limiter
| 08***26 | Valve Group | 1 |
813660 Valve Gp-Solenoid
| 08***60 | Valve Group | 1 |
5e7627 Vibrator Gp (3 Amplitude)
| 5E***27 | Vibrator Group | 1 |
5e7626 Vibrator Gp (1 Amplitude)
| 5E***26 | Vibrator Group | 1 |
Water Spray System
5e7740 Mat Gp-Water
| 5E***40 | Mat Group-Water | 1 |
1g3825 Mounting Gp
| 1G***25 | Mounting Group | 1 |
814502 Pump Gp-Water Spray
| 08***02 | Pump Group | 1 |
5e7738 Pump Gp-Water Spray
| 5E***38 | Pump Group | 1 |
814502 Pump Gp-Water Spary
| 08***02 | Pump Group | 1 |
813450 Pump Gp (Water Spray)
| 08***50 | Pump Group-Water | 1 |
5e6962 Spray Bar As
| 08***48 | Nozzle | 6 |
| 08***63 | Cap | 6 |
| 08***65 | Seal | 6 |
0832587 Spray Bar As
| 08***87 | Spray Bar As; (Rear)(Cb521 & 523) | 1 |
5e7736 Water Spray Gp
| 5E***36 | Spray Group-Water | 1 |
5e7730 Water Spray Gp
| 5E***30 | Spray Group-Water | 1 |
5e7735 Water Spray Gp
| 5E***35 | Spray Group-Water | 1 |
5e7732 Water Spray Gp
| 5E***32 | Spray Group-Water | 1 |
5e7733 Water Spray Gp
| 5E***33 | Spray Group-Water | 1 |
0812909 Strainer Gp-Water
| 08***09 | Strainer Group-Water | 1 |
1g3228 Water Spray Gp
| 1G***28 | Water Spray Group | 1 |
CB-525 serial number reference
On this generation of Cat single-drum compactor the serial/PIN tag is a riveted metal plate on the machine frame, typically near the front articulation joint or on the frame rail under the operator platform - check there, and on the engine or vibratory drum housing if the frame tag is missing. Read the first three characters as the prefix, which identifies the specific model and production series; the digits that follow are the sequential unit number within that prefix run. These are pre-2001 Cat machines, so the plate shows the short prefix-plus-sequence format rather than a full 17-character PIN.
| Prefix | Identifies | Notes |
|---|---|---|
| 6XD | CB-525 first-generation single-drum vibratory compactor (Raygo-derived platform, part of the CB-521/522/523/524/525 family Caterpillar built after acquiring the former Raygo compactor line from CMI in 1987) | Powered by a Deutz F5L912 air-cooled diesel, rated 83 hp (62 kW) gross, driving a 1.7 m (67 in) smooth drum. Operating weight is about 13.2 t (29,100 lb). Shares its parts/service literature with sibling prefixes 6RD (CB-521), 6SD (CB-522), 6TD (CB-523) and 6WD (CB-524) - one family, one catalog, each model with its own distinct prefix. Dates to the late-1980s Raygo-lineage production era. |
| 7FK | CB-525B (B-series update) | Main production run for this variant (unit 1-and-up). Documented in the same parts catalog as CB-523B. Engine fitment for the B-series is not confirmed in available documentation - do not assume it carries over the Deutz F5L912 from the non-B CB-525; verify with dealer before ordering engine-specific parts. |
| 1NL | CB-525B - early/limited production run preceding the 7FK series (units 1 through roughly 80) | Appears consistently in CB-525B parts-catalog listings paired with the 7FK1-and-up range, suggesting a short pre-production or early batch immediately ahead of it. Range is thin - confirm with dealer before relying on this prefix for parts lookup. |
Frequently asked questions
What engine does the Caterpillar CB-525 use?
The CB-525 runs a Deutz F5L912 - a naturally aspirated, air-cooled 5-cylinder diesel of about 4.7 L displacement rated around 83 hp (62 kW) gross. It is not a Cat-branded engine; Caterpillar inherited the design through its 1987 acquisition of the Raygo/CMI compaction line, and the F5L912 stayed in place through the later CB-525B update.
What is the operating weight of the CB-525?
Operating weight is about 13,199 kg (29,101 lb) for the standard smooth-drum/pneumatic-tire configuration. Figures can vary a bit by ballast, tire selection, and series update, so treat this as a working baseline rather than an exact figure for every serial range.
What replaced the Caterpillar CB-525?
Caterpillar first updated the model in place as the CB-525B, keeping the same Deutz-powered, drum-and-pneumatic-tire layout with revised hydraulics and controls. The CB-500 series was eventually phased out as Cat moved to its modern weight-class naming (CB2.5, CB2.7, and up), which uses Cat's own diesel engines rather than Deutz power. There is no single one-for-one direct successor - later tandem/combination compactors replaced the whole model family over time.
What CB-525 owners discuss
What's the biggest complaint operators have about the Deutz F5L912 engine in the CB-525?
Does the hydrostatic drive on the CB-525 creep or drift, and is that normal?
What wear pattern shows up first on the front drum's bearings and seals?
What should I know about the rear pneumatic-tire axle on this machine?
Does the CB-525 have the sensor and ECM problems people complain about on newer Cat equipment?
What causes vibration problems on the drum, and are they dangerous?
What should I check before buying a used CB-525?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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