Question 1

What engine powers the Caterpillar CB-314?

Accepted Answer

The parts catalog confirms a dedicated engine installation on the CB-314, but the specific engine model is not documented in available public specification literature for the 6HD serial range. Check the engine nameplate on the unit or your Cat dealer's serial lookup to confirm the exact engine for a given machine.

Question 2

What is the operating weight of the Caterpillar CB-314?

Accepted Answer

Factory operating weight is not published in available documentation for this model. Based on its frame and drum architecture it falls in the compact, light tandem vibratory roller class; confirm actual weight from the machine's data plate before planning transport or load-out.

Question 3

What replaced the Caterpillar CB-314?

Accepted Answer

No direct, one-to-one factory successor is documented for the CB-314. It predates Caterpillar's current CB-series naming and generation-suffix system; the nearest modern equivalents in this compaction class are the CB14/CB24 utility compactors and the CB214-series tandem vibratory rollers, though these are separate model lines rather than a named replacement.

Question 4

Is there much owner or mechanic discussion of the CB-314 specifically on forums and community sites?

Accepted Answer

Very little turns up under this exact model name. The CB-314 is a 1990s-era Cat tandem vibratory asphalt compactor (serial prefix 6HD) built before the current CB14/CB214/CB334 naming scheme, and it was a low-volume machine even when new. Searches on equipment forums and enthusiast Q&A sites mostly return the unrelated Cat 314 excavator or newer CB-series compactors that happen to share similar numbering. What follows draws on general wear and maintenance patterns reported for small-to-mid tandem vibratory rollers of this era as a class, not confirmed CB-314-specific anecdotes. Treat it as a starting point and confirm against the machine's own service literature and a dealer familiar with vintage Cat paving equipment.

Question 5

What propel and hydraulic behaviors get reported for compactors in this size and vintage class?

Accepted Answer

Across small tandem rollers of this generation, the most common propel complaint is a gradual loss of drive response: sluggish takeoff, creeping when parked on a grade, or drive that fades as the machine warms up. Operators and techs most often trace this to worn hydrostatic pump or motor internals, a weak charge pump, or contaminated hydraulic fluid rather than one single failed part. Overheated fluid is a recurring theme in the wider class: a clogged or undersized oil cooler lets fluid run hot, which accelerates seal and hose degradation and can trigger an unplanned shutdown. Routine fluid and filter changes on schedule, plus keeping the cooler core clean, are the standard fix cited across this machine type. Any loss-of-drive or runaway-creep condition that could let the machine move unexpectedly should have your dealer verify the hydrostatic charge pressure and brake-release circuit before the machine goes back to work.

Question 6

What wear patterns typically show up on the drum and scraper hardware for this class of roller?

Accepted Answer

The drum eccentric (vibratory) shaft bearings are the highest-wear item reported across small tandem compactors generally. A failed shaft seal lets vibratory oil weep into the drum shell with no visible external sign, and by the time it shows up as noise or play the bearing is usually already damaged. Techs recommend checking vibratory oil level and looking for water or metal contamination at every service interval rather than waiting for a noise complaint. Scraper bars are the other commonly cited wear item: a loose or worn scraper lets asphalt build up on the drum surface, which then tears or marks the finished mat, so daily scraper adjustment checks are the standard advice rather than a fixed hour interval.

Question 7

What engine does the CB-314 use, and are there known quirks for it?

Accepted Answer

Available documentation confirms the CB-314 designation and its 6HD serial prefix, but nothing found ties a specific engine family to this exact model with confidence. Later, similarly-numbered Cat compactors are documented with 3000-series industrial diesel engines, but that association was not found tied specifically to the CB-314 and should not be assumed. A machine of this vintage almost certainly predates Cat's electronic engine control era, meaning fueling and governing are mechanical rather than sensor-driven - which also means engine quirks on machines this old typically trace to the injection pump, lift pump, or fuel quality rather than to any electronic fault. Confirm the actual engine model and rating from the engine serial plate or the machine's own parts book. Have your dealer verify the engine identity before ordering any engine parts or service kits.

Question 8

What electrical issues are typical for compactors of this age?

Accepted Answer

Machines from this era don't carry the sensor networks of modern compactors, so electrical issues mean basic harness and switch problems rather than diagnostic fault codes. Patterns reported across older paving and compaction equipment generally include heat-cycled wiring insulation cracking at connectors, corrosion building up in terminal contacts after years of wash-down and weather exposure, and vibration working connectors loose over time. These show up as intermittent no-start conditions, flickering gauges, or a vibratory or propel function that cuts in and out. Seat safety-interlock switches and the vibration on/off switch or relay are common suspects when a function won't engage even though the pump and motor test out fine. Any intermittent fault tied to a safety interlock, parking-brake release, or vibration cutout circuit should have your dealer verify the wiring and switch logic rather than being bypassed.

Question 9

What should a buyer check on a used CB-314 or similar-age small tandem compactor?

Accepted Answer

Start with the serial plate: confirm the 6HD prefix and serial number match the paperwork before evaluating anything else, since a machine this old with a title or history mismatch is a bigger risk than any single wear item. Start the engine cold and check that smoke color and starting behavior are consistent with a mechanically-injected diesel of that generation. With the machine running, cycle the vibratory function at idle and at working speed and listen for bearing noise or excessive drum-shell vibration transmitted into the frame. Check the articulation joint and steering cylinders for play, inspect drum scraper adjustment and wear, and look for oil weeping from the eccentric shaft seals at each drum end. Test the water spray system across all nozzles for even coverage, since clogged nozzles are common on machines that sat with untreated water left in the tank. Parts support for a model this old is limited, so budget time for sourcing before committing. Have your dealer verify hydrostatic drive performance and brake-release function on a test drive before purchase.

System	Capacity	Recommended fluid
Engine crankcase (with filter)	Not published in accessible sources for this exact model/serial range - verify with dealer or the machine's own OMM	Caterpillar diesel engine oil (Cat DEO family), viscosity grade selected by ambient temperature per Cat's standard multigrade chart; exact grade not confirmed for this model
Cooling system	Not published in accessible sources for this exact model/serial range - verify with dealer or the machine's own OMM	Caterpillar coolant, either Extended Life Coolant (Cat ELC) or Diesel Engine Antifreeze/Coolant (Cat DEAC), per Cat's standard cooling system spec; exact product not confirmed for this model
Fuel tank	Not published in accessible sources for this exact model/serial range - verify with dealer or the machine's own OMM	Diesel fuel meeting Caterpillar's engine fuel specification; no model-specific capacity figure located
Hydraulic system and tank (propel and vibratory circuits)	Not published in accessible sources for this exact model/serial range - verify with dealer or the machine's own OMM	Caterpillar hydraulic fluid from the Cat TDTO or Cat HYDO family, consistent with Cat's practice on this era of vibratory compactor; exact grade not confirmed for this model
Grease (all fittings)	Not a refill capacity - serviced by interval per grease point, not a fluid volume	NLGI 2 multipurpose grease (Cat Multipurpose Grease or Cat Advanced 3Moly family); exact spec not confirmed for this model

Service interval	Tasks
Every 10 h	Check engine oil level and coolant level before start-up each shift. Fill the water spray tank and test spray bars and nozzles on both drums for even, unclogged coverage. Inspect front and rear vibratory drum scrapers for contact and wear; adjust clearance. Walk around and check for hydraulic leaks at propel motors, vibratory motors, and steering cylinders. Check the ROPS structure, seat belt, and operator station controls for damage before operating. Drain fuel tank water and sediment and top off fuel weekly.
Every 250 h	Change engine oil and filter. Replace the fuel filter element. Check torque hub and drum drive oil level and top off as needed. Inspect front and rear vibratory bearing housings for oil leakage or aeration. Grease the articulation/steering joint and oscillation pivot. Inspect the water pump drive and spray hoses for wear or cracking.
Every 500 h	Change the hydraulic system filter element. Change torque hub/final-drive oil. Inspect brake bands or discs and adjust as needed. Check front and rear vibratory exciter bearing oil condition. Inspect electrical wiring, connectors, and battery terminals for corrosion.
Every 1,000 h	Change hydraulic tank oil (full system service). Sample or replace engine coolant and pressure-test the cooling system. Inspect drum shells for cracks and dents and retorque scraper mounting hardware. Function-test front and rear vibratory systems independently for correct amplitude and frequency engagement. Inspect the propel pump and drive motors for external wear or leakage.
Every 2,000 h	Change vibratory drum bearing/exciter oil, front and rear. Inspect torque hub and drive-train gearing for wear. Pressure-test hydraulic relief valves and the propel circuit. Inspect frame, articulation joint, and oscillation-pivot bushings for wear and replace as needed. Perform a full brake system teardown, inspection, and adjustment. Inspect operator station mounts/isolators and ROPS fasteners for fatigue.
Every 4,000 h	Evaluate the engine for in-frame overhaul based on compression and blow-by readings. Rebuild or replace vibratory drum bearings and seals, front and rear. Rebuild or replace torque hub gear sets and worn drive-train components. Overhaul or replace the hydraulic pump and propel motors. Rebuild the articulation/oscillation joint and replace worn bushings and pins.

Code	Meaning	Likely cause	What to do
Engine Oil Pressure warning lamp (red dash icon, no alphanumeric code)	Warning lamp only, not a stored diagnostic code; indicates engine oil pressure below the safe minimum sensed by the mechanical sender switch.	Low oil level, clogged oil filter, worn oil pump, or a failed pressure sender/switch.	Stop the engine immediately, check oil level and filter condition before restarting.
Coolant Temperature warning lamp (red dash icon, no alphanumeric code)	Warning lamp only, not a stored diagnostic code; indicates engine coolant temperature above the normal operating range.	Low coolant level, blocked radiator fins, slipping or broken fan belt, or a failed thermostat.	Idle down, let it cool, verify coolant level, inspect belt and radiator before continuing work.
Charging System (alternator) warning lamp (dash icon, no alphanumeric code)	Warning lamp only, not a stored diagnostic code; indicates the alternator is not charging the battery.	Broken or slipping alternator belt, loose or corroded wiring, or a failed alternator/regulator.	Shut down promptly to avoid battery drain, inspect belt tension and charging circuit wiring.

09***20	Control Group-Propel	1
5E***78	Control Group-Propel	1
7R***48	Mount; (Propel Control)	1

Caterpillar CB-314

Caterpillar CB-314 specifications

Engine

Weights

Dimensions

Performance

Service capacities (summary)

CB-314 fluids & capacities

Caterpillar CB-314 maintenance schedule

Servicing the CB-314 beyond the schedule

Predictive Maintenance & Fluid Analysis

Corrective & Common Repairs

Overhaul & Rebuild Points

Seasonal & Environment Servicing

CB-314 fault codes & troubleshooting

All CB-314 assemblies by section

CB-314 serial number reference

Frequently asked questions

What CB-314 owners discuss

Need a specific CB-314 part?