Caterpillar CB-514
Caterpillarpaving compactorvibratory compactor

Caterpillar CB-514

Maintenance schedule, common problems & OEM parts breakdown

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The Caterpillar CB-514 is a tandem vibratory smooth-drum asphalt compactor. It sits in Caterpillar's early CB-series paving-compactor lineup, alongside sibling sizes such as the CB-434, CB-524, CB-534, CB-583, CB-614 and CB-634. The machine runs a mechanically governed diesel with no electronic control module, typical of Cat's pre-electronic compactor generation. The factory-original engine for this exact nameplate is not confirmed in available documentation. One documented unit carried a GM/Detroit Diesel 3-53N two-stroke, but this may be a field-installed replacement rather than the original factory fit. Operating weight on the one documented configuration is about 9,730 kg (21,450 lb), with a drum roughly 1.73 m (68 in) wide and a water tank near 416 L (110 US gal) for drum-cooling spray. Other ballast or width combinations for this model are undocumented. Exact production years for this nameplate are not published, but the mechanical governor and lack of ECM place it in Caterpillar's older compactor generation, built as a basic ROPS/canopy roller ahead of the cab and electronic-control options Cat later added to the line.

Across the CB-series lineup, Caterpillar moved from third-party mechanical diesels to its own standardized engines, then added electronic amplitude and frequency control, compaction meters and enclosed cabs on later tandem rollers. None of that applies to this earlier, mechanically governed generation. Caterpillar eventually replaced the original CB-series naming with unit-designated tandem vibratory rollers built around Cat engine platforms, and today's lineup runs from small utility compactors up through the larger CB13-CB16 class. The CB-514 itself is a low-circulation, vintage unit with almost no footprint in today's spec databases or resale listings. It turns up mainly in older parts catalogs and the occasional used-equipment listing, so treat any weight, drum or engine figure tied to it as configuration-specific, not a confirmed factory spec sheet. Verify the actual engine and serial off the machine's dataplate before ordering parts or planning a rebuild.

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-514 specifications

Engine

Engine identityNot documented in any available factory spec sheet or equipment database for this legacy single-drum paving compactor. Verify the engine make/model from the machine nameplate or the parts book for serial prefix 6YD before ordering parts.
Gross/net powerNot published in available sources.
Displacement / cylindersNot published in available sources.
Emissions tierNot applicable — this is a pre-emissions-regulation era model; no tier rating published.

Weights

Operating weightAbout 9,730 kg (21,450 lb) as listed for a specific used unit. No factory spec sheet for this model was found to confirm this as a standard base-configuration rating, so treat it as representative rather than a confirmed factory figure.
Shipping weightNot published in available sources.
Ground pressureNot published in available sources.

Dimensions

Drum widthAbout 1,727 mm (68 in), from the same used-unit listing referenced above.
Transport length/width/heightNot published in available sources.
Wheelbase / axle spacingNot published in available sources.
Ground clearanceNot published in available sources.

Performance

Travel speedNot published in available sources.
GradeabilityNot published in available sources.
Vibration frequency / amplitudeNot published in available sources.

Service capacities (summary)

Water tank (sprinkler system)About 416 L (110 US gal), from the same used-unit listing referenced above.
Fuel tankNot published in available sources.
Hydraulic systemNot published in available sources.
Engine oilNot published in available sources.
Cooling systemNot published in available sources.

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

CB-514 fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter)Not documented for this exact machine in available sources. The factory-original engine for this nameplate is not confirmed; one documented unit carried a GM (Detroit Diesel) 3-53N, a naturally aspirated 3-cylinder two-stroke diesel, but this may be a field-installed replacement rather than the original factory powertrain. Confirm the actual engine and fill capacity against the machine's own dataplate or a dealer before servicing.If the engine matches the one documented reference (a Detroit Diesel two-stroke, not a Cat-built engine), no Cat DEO spec applies — Series 53 two-stroke practice of this vintage calls for a heavy-duty, ash-controlled diesel engine oil suited to two-stroke service; SAE 30 for warm-climate operation, 15W-40 or 10W for cold-weather starts, graded to ambient temperature. Verify against the confirmed engine before selecting oil.
Cooling systemNot documented for this exact machine in available sources.Not documented for this model. A fully-formulated heavy-duty diesel coolant/antifreeze (Cat ELC-class or equivalent) is standard practice for a mechanically governed diesel of this era; verify against the machine's own cooling system and confirmed engine before filling.
Fuel tankNot documented for this exact machine in available sources.No. 2-D diesel fuel (No. 1-D or a winter blend in cold climates).
Water tank (drum spray system)Approximately 416 L (110 US gal) per period equipment records for this machine. This is the drum-wetting tank used to keep the smooth steel drum wet and prevent asphalt pickup during paving; it is not an engine fluid.Clean water. Add a water-tank biocide/anti-freeze additive in cold or algae-prone conditions per standard paving-compactor practice.
Hydraulic system and tank (propel, vibratory, steering)Not documented for this exact machine in available sources.Not documented for this model. Cat compactors of this class typically specify an anti-wear hydraulic oil (Cat HYDO-class) or Cat TDTO, graded to ambient temperature; confirm against the CB-514's own OMM before filling.
Rear axle differential / final drivesNot documented for this exact machine in available sources.Not documented for this model. Typically a GL-5 gear oil or Cat TDTO-class drivetrain oil, graded to ambient temperature.
Vibratory drum drive housingNot documented for this exact machine in available sources.Not documented for this model. Typically shares the same gear/drivetrain oil spec as the axle final drives on machines of this class.
Grease (spec only)Not applicable — chassis grease points, no fill volume specified.Multipurpose chassis grease, NLGI 2, per standard Cat lubrication practice for pins, bushings, articulation joint, and drum bearings.

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

Caterpillar CB-514 maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil and coolant levels before starting each shift.
  • Inspect the water tank, spray bar and nozzles for leaks, clogging or uneven flow, and clear or flush lines as needed.
  • Check drum scraper wear and adjust scraper-to-drum clearance.
  • Listen for unusual vibratory-drum bearing noise or play and check for oil or grease leaks around the bearing housing.
  • Drain sediment and water from the fuel tank sump (weekly).
  • Grease the articulation joint and steering-hinge pivot points (weekly).
Every 250 h
  • Change engine oil and filter; this mechanically governed diesel needs shorter oil intervals than a modern common-rail engine.
  • Service or replace the air cleaner element and check for intake restriction.
  • Check vibratory drive belt or coupling condition and tension.
  • Grease all drum-bearing and eccentric-weight grease points.
  • Check propel and steering hydraulic oil level and inspect hoses and fittings for chafing or seepage.
Every 500 h
  • Replace the fuel filter and drain the fuel-water separator.
  • Check and adjust engine valve lash, typical service on a mechanically governed diesel of this class.
  • Inspect vibratory-drum bearing seals and check eccentric-housing oil level.
  • Inspect the propel pump, drive motor and any drive-chain or gear case for leaks and correct oil level.
  • Inspect the frame, articulation joint and steering-cylinder pins and bushings for wear.
Every 1,000 h
  • Change hydraulic oil and the hydraulic filter.
  • Change the vibratory-drum bearing and eccentric-housing oil.
  • Check and re-torque drum-bearing housing bolts and scraper mounting hardware.
  • Inspect engine mounts, exhaust and radiator or oil-cooler fins for damage or blockage.
  • Test coolant condition and freeze point and inspect hoses and clamps.
Every 2,000 h
  • Have the injector pump and governor linkage inspected, typical major service for a mechanical-injection diesel at this service life.
  • Inspect the drum shell for cracks or excess wear and check vibratory-bearing clearance.
  • Inspect articulation-joint bushings for wear and plan replacement if play is present.
  • Inspect alternator, starter and wiring for corrosion given the machine's age.
  • Sample engine and hydraulic oil for wear-metal analysis to gauge internal wear before deciding on a major component rebuild.
Every 4,000 h
  • Plan for engine top-end or full overhaul depending on oil-analysis trends and compression or blow-by condition.
  • Rebuild or exchange the vibratory-drum bearing and eccentric-weight assembly.
  • Overhaul the propel and steering hydraulic pumps and motors.
  • Replace aging rubber hoses, engine and cab mounts, and seals regardless of apparent condition.
Every 6,000 h
  • Evaluate the drum shell and scraper assembly for replacement if worn through or repeatedly repaired.
  • Rebuild the engine block and liners, or source a reconditioned exchange engine matched to the confirmed dataplate engine.
  • Rebuild or replace articulation-joint bushings, pins and steering-cylinder seals as a set.
  • Weigh rebuild cost against replacement given the machine's age and parts scarcity before committing to a major overhaul.

Servicing the CB-514 beyond the schedule

Predictive Maintenance & Fluid Analysis

Because the factory engine on this nameplate isn't confirmed, match oil, filter and injection-pump service to whatever mechanically governed diesel is on the dataplate, not a standard Cat schedule. Run periodic oil sampling on the engine and on the vibratory-drum bearing/eccentric housing to catch ring or bearing wear early on a unit deep into its service life. Check water-tank level, spray-bar flow and drum-bearing sound every shift; with no ECM fault log, listening and visual checks are the diagnostics on this machine.

Corrective & Common Repairs

Typical failures on a compactor this old center on the vibratory-drum bearing and eccentric-weight assembly, worn drum scrapers, and cracked or clogged water-spray lines and nozzles. Articulation-joint bushing play at the center steering hinge is another common wear point on tandem rollers of this size. Because the engine is mechanically governed, injector-pump wear and governor-linkage drift, not electronic fault codes, drive most no-start or rough-running complaints. Expect brittle fuel lines, hardened hoses and leaking gaskets on a machine this age; replace them outright rather than reusing them.

Overhaul & Rebuild Points

A rebuild candidate at this age typically needs the vibratory-drum bearing and eccentric housing reconditioned or exchanged, plus engine block and liner work sized to whichever mechanical diesel is actually fitted, since the factory engine for this nameplate isn't confirmed. Source rebuild kits off the engine serial and dataplate, not off the CB-514 model number alone. Inspect the drum shell and scraper mounts for wear before committing to a bearing rebuild, and plan on overhauling the propel and steering hydraulic pumps and motors.

Seasonal & Environmental Servicing

Winterize the water-tank and spray-bar system fully; a mechanically governed diesel this old has no block-heater electronics, so cold starts depend on battery condition and correct fuel and oil viscosity for ambient temperature. In hot paving-season use, watch drum-bearing temperature and spray-water flow closely, since baked-on asphalt buildup accelerates scraper and bearing wear. Store the machine with the water system fully drained between seasons to prevent freeze-cracking in a tank and line design that predates the freeze-protection features built into later Cat compactors.

CB-514 attachments & work tools

Drum / compaction package

Twin smooth steel drums (one front, one rear) form the whole compaction package; no interchangeable buckets, blades, or other pin-on work tools mount to this chassis. The one documented unit for this model shows drums about 1727 mm (68 in) wide with an operating weight near 9730 kg (21,450 lb) - treat width and weight as configuration-specific rather than one fixed figure for the whole model run.

Vibratory exciter / static-vibratory mode

Each drum carries an eccentric-weight exciter driven off the machine's own hydraulic system, and the operator selects static or vibratory compaction from the console. Frequency and amplitude are not documented for this exact model - they vary by configuration/series within the tandem-roller class, so confirm against the specific unit's plate or dealer records rather than assuming a single value.

Water spray / sprinkler system

A spray bar with filtered nozzles wets each drum face to stop hot mix from sticking to the steel during rolling; this is standard factory equipment on the machine, not a bolt-on kit. Documented water-tank supply for this model is about 416 L (110 US gal).

Drum scrapers

Adjustable scraper blades ride against each drum face to clear tack and mix buildup. They are purely mechanical, spring- or bolt-adjusted with no hydraulic circuit, and are standard fitment rather than an option.

Coupler / mounting system

This roller class has no quick-coupler or pin-on work-tool interface like a loader or excavator. Drums, scraper blades, spray bar, and guarding are fixed factory assemblies bolted or pinned directly to the front and rear frame halves - nothing on this machine is swapped in the field the way a work tool is.

Articulated oscillating frame joint

The front and rear drum frames join through a center articulation/oscillation joint so both drums keep contact with uneven grade and cross-slope. This is a structural feature common to tandem vibratory rollers in this size class, not a selectable option.

Operator guarding

Tandem rollers of this size/class and era typically shipped with an open ROPS canopy over the operator's station rather than an enclosed cab; enclosed-cab options became common on later, redesigned tandem-roller generations. This is class-typical information - the exact guarding fitted to a given serial number should be checked against its build record, since no CB-514-specific guarding spec was found.

Ballast / weight options

Some tandem rollers in this weight class offer added ballast or extra water-tank capacity as a factory option to raise operating weight within the same drum width. No model-specific ballast kit is documented for this unit, so treat this as a class-typical option to verify with dealer parts records rather than a confirmed factory offering for this nameplate.

All CB-514 assemblies by section

Every catalogued assembly group for the Caterpillar CB-514. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Brake Group
Brake Assembly
C1***19Brake Assembly1
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Brake System
Brake System Lines & Fittings
Drum Group
Front Drum Mounting Assembly
Front Drum Scraper Assembly
Front/Rear Drum Weight Assembly
Rear Drum Mounting Assembly
Rear Drum Scraper Assembly
Engine Group
Air Cleaner Assembly
13***88Air Cleaner Assembly1
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Battery Assembly
Engine Air Cleaner Assembly
Engine And Oil Cooling Assembly
Engine Exhaust System
Engine Fuel System
Engine Mounting Assembly
Engine Throttle Control & Shutdown Assembly
Pump Drive System Assembly
Frame Group
Articulation Lock Assembly
Engine Compartment Assembly
Front Frame Assembly
Rear Frame Assembly
Steer Pivot Assembly
Instrument Group
Instrument Panel Assembly
Miscellaneous
Decals
Hardware Identification
Wire Harnesses
01***41Harness - Back-Up Alarm1
02***86Harness Assembly., Working Lights1
02***87Harness Assembly., Working Lights1
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Options
Back-Up Alarm Assembly
Feet Per-Minute Indicator Assembly
Rops Assembly
Working Lights Assembly
Platform Group
Platform Assembly
Seat Assembly
06***79Seat Assembly1
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Propel Group
Front Propel System Lines & Fittings
Hydraulic Motor
06***14Hydraulic Motor1
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Hydraulic Pump
12***26Hydraulic Pump1
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Propel Drive Wheel
10***27Propel Drive Wheel1
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Propel System
Propulsion Control Assembly
Pump Drive Assembly
12***24Pump Drive Assembly1
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Rear Propel System Lines & Fittings
Right Angle Drive - Front Drum
10***30Right Angle Drive1
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Transmission Valve - Old Style
12***27Transmission Valve1
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Transmission Valve - New Style
06***20Transmission Valve1
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Steering Group
Steering Cylinder
12***20Steering Cylinder1
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Steering Pump
12***18Steering Pump1
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Steering System
Steering System Lines & Fittings
Steering Valve
13***40Steering Valve1
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Vibratory Group
Hydraulic Valve
12***57Control Group-Steering1
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Front Vibratory System Lines & Fittings
Hydraulic Motor
12***21Hydraulic Motor1
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Hydraulic Pump
12***20Hydraulic Pump1
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Relief Valve
12***61Idler Group-Belt1
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Rear Vibratory System Lines & Fittings
Vibratory System
Water Spray Group
Water Pump
26***06Water Pump1
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Water Spray System
6Y***18Water Spray System1
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Water Spray System Lines & Fittings
Water Spray System Lines And Fittings

CB-514 serial number reference

The PIN plate on a CB-514 sits on the machine frame, typically near the front articulation hitch or on the frame rail under the operator's platform; the number is also usually stamped into the frame itself near that plate as a backup. Read the first three characters as the prefix, which identifies the model/version and build series; the digits that follow are the sequential unit number for that prefix run.

PrefixIdentifies
6YDCB-514 vibratory/paving compactor (single smooth-drum roller)

Frequently asked questions

What engine does the Caterpillar CB-514 use?

The factory-original engine for this nameplate is not confirmed in available documentation. One documented unit carried a mechanically governed, two-stroke GM/Detroit Diesel 3-53N, but this may be a field-installed replacement rather than the original factory fit. Confirm the actual engine off the machine's dataplate or with a Cat dealer before ordering parts.

What is the operating weight of the Caterpillar CB-514?

The only documented configuration lists an operating weight of about 9,730 kg (21,450 lb), with a drum roughly 1.73 m (68 in) wide. That figure comes from a single equipped unit rather than a published factory spec sheet, so treat it as configuration-specific and confirm actual weight for any given machine against its own dataplate or a scale ticket.

What replaced the Caterpillar CB-514?

No single documented one-for-one successor exists for this exact nameplate. Caterpillar's compactor lineup moved on from the early CB-series to tandem rollers built around Cat's own diesel engines with electronic amplitude and frequency control, and today that lineage runs from small utility compactors through the larger CB13-CB16 class.

What CB-514 owners discuss

What engine is actually in a CB-514, and does it have any known quirks?
Documentation for this exact model and serial range (prefix 6YD) is thin, so confirm the engine off the tag on your own unit rather than assuming it matches a later C-suffix sibling of similar size. Machines of this vintage and weight class from Caterpillar's compactor line generally ran naturally aspirated, mechanically governed mid-range diesels with no electronic fuel control and no fault-code system to lean on. Expect the usual pre-electronic quirks: a slight hesitation on cold start until the mechanical governor settles, sensitivity to injection timing drift, and diagnosis that relies on manual pressure and timing checks rather than a scan tool. If the engine has been swapped over the machine's life, that's common on machines this old and worth verifying against the plate rather than the parts book alone.
Why does the drum lose vibration or run at reduced amplitude?
On this class of smooth-drum compactor, loss of vibration traces to a handful of repeat causes: worn or damaged eccentric-weight-shaft bearings inside the drum, a splined coupling or drive shaft that has broken and lets the vibratory motor spin without turning the weight shaft, or simply a low or contaminated vibratory bearing lube reservoir. Reduced amplitude (vibrating, but weaker than it should) is often the counterweight locking fasteners working loose and letting the eccentric weights rotate toward a lower-amplitude position rather than a hydraulic fault. Check reservoir oil level and condition first — milky or metallic-looking oil points to bearing wear inside the drum, not just a top-off situation.
What propel and hydraulic behavior is normal versus a warning sign?
Hydrostatic propel systems on tandem rollers this size are simple but drift with age. A gradual drop in top ground speed, or uneven speed between forward and reverse, usually points to pump swashplate calibration drift rather than a failed component, and it will show up as inconsistent compaction (over-rolled spots next to cold spots) before it shows up as an obvious fault. Sluggish response only when the machine is cold, that clears up once hydraulic oil warms, is normal for this style of drive. Response that stays sluggish or one-sided after warm-up, or a machine that creeps on a grade with the propel lever centered, is not normal and points to pump or motor wear — have your dealer or a hydraulics shop verify before returning it to service on any grade work.
What undercarriage and articulation wear should I expect on a machine this age?
The articulation and oscillation joint is the main wear point on any tandem roller of this vintage. As the oscillation joint wears, thrust ring clearance opens up and you'll feel increased side-to-side play in the joint; the usual fix is shimming the thrust washers to take up the gap, and the ring bearing tends to wear at a different rate than the washers so uneven wear there is normal, not a red flag by itself. Weekly greasing of the articulation and oscillation bearings is expected maintenance on machines of this age (later designs moved toward sealed, maintenance-free joints, but this generation is not one of them). Inspect the joint welds visually for stress cracking, since that's the early warning sign of a joint headed for failure rather than just ordinary bushing wear.
What causes an oily or wet-looking drum, and is it serious?
An oily film on the drum surface, separate from the water spray system, is commonly a level plug that has worked loose or fallen out of the drum's internal cooling-oil compartment (the reservoir that lubricates the vibratory bearings). It shows up as oil weeping from the drum rather than a leak you can trace to a hose or fitting. Check that the plug is present and torqued and confirm the reservoir is at the correct level before assuming a seal has failed — a genuinely failed drum seal will keep losing oil after the plug is confirmed tight and should be treated as a bearing-and-seal job, not a top-off.
What electrical or sensor faults commonly stop the vibratory system from engaging?
Most no-vibration complaints on this style of machine are electrical, not hydraulic: a blown instrument-panel fuse, corroded or loose connectors at the vibratory switch and solenoid valve, or general moisture and vibration-induced wiring damage (broken loom supports, worn-through insulation at chafe points) are the first things to check. On machines with a vibration or amplitude sensor, a faulty sensor can fail to initiate or regulate vibration even though the motor and drum bearings are fine — verify sensor wiring and connector condition before condemning the sensor itself. Work the fuse and switch/solenoid wiring first; it resolves more no-vibration complaints than any single component failure.
What should I check before buying a used CB-514?
Confirm the serial prefix and plate data match what the seller claims, since this model spans a narrow, low-volume serial range and parts availability depends on getting that right. Walk the articulation/oscillation joint for play and check the welds for stress cracking. Run the vibratory system through its full amplitude range and watch for a slow build or drop-off, and check the vibratory bearing reservoir oil for a milky or metallic look. Check the drum surface for oil weeping (loose cooling-oil compartment plug versus a genuine seal failure) and confirm the water spray system clears and covers evenly, since a clogged or dead spray system is one of the most common causes of downtime on double-drum asphalt compactors and will cause asphalt pickup on the drum if ignored. Test propel in both directions on a grade, not just flat ground, to catch swashplate drift. Because this is an older, mechanically governed machine with no fault-code diagnostics, have your dealer or a qualified technician verify brake holding capacity, ROPS structure condition, and any hydraulic pressure specs against the service manual before putting it into daily production work.

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

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