Caterpillarpaving compactorvibratory compactor
Caterpillar CB-634D
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar CB-634D is a tandem-drum vibratory asphalt compactor in Cat's mid-size paving compactor class, built for breakdown, intermediate, and finish rolling on asphalt mats. It runs a Cat 3116T turbocharged diesel rated at roughly 108 kW (145 hp) gross and 103 kW (138 hp) net across the D-series. Operating weight runs about 12,200-12,800 kg (26,900-28,200 lb) depending on ROPS, water-tank, and ballast configuration. Factory literature for the D-series dates to the early-to-mid 2000s, following the CB-634C of the 1990s and preceding the CB64 platform introduced around 2009. Configurations included standard smooth-drum machines with an integrated water spray system for asphalt pickup control, plus ROPS canopy options.
The move from C-series to D-series kept the 3116T diesel platform but updated hydrostatic propel and vibratory controls and cab ergonomics, ahead of Cat's later shift to electronic C4.4 power in the CB64. For today's used and parts market, the CB-634D sits in a practical middle ground: mechanically simpler than later Tier 3/4 machines, with engine components shared across Cat truck, marine, and generator applications that keep supply healthy, while compactor-specific vibratory bearings, drum scrapers, and propel components grow scarcer as the fleet ages. That combination keeps running, low-hour D-series units and parted-out machines steady sellers for contractors extending older paving fleets.
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-634D specifications
Engine
| Engine model | Cat 3116T, four-stroke, six-cylinder turbocharged diesel |
| Gross power | 108 kW (145 hp) at 2,200 rpm |
| Net power | 103 kW (138 hp) at 2,200 rpm, rated per EEC 80/1269, ISO 9249, and SAE J1349 JUN95 |
| Displacement | 6.6 L (403 in³); bore 105 mm (4.12 in), stroke 127 mm (5.0 in) |
| Emissions certification | Certified to model-year nonroad diesel requirements under 40 CFR 89.102 (period-correct certification basis for this generation; not labeled with a later Tier/Stage designation on the factory sheet) |
Weights
| Operating weight, with ROPS | 12,800 kg (28,160 lb) |
| Operating weight, without ROPS | 12,389 kg (27,255 lb) |
| Shipping weight, with ROPS | 11,937 kg (26,260 lb) |
| Shipping weight, without ROPS | 11,525 kg (25,355 lb) |
| Drum weight split (front/rear) | Front 6,129 kg (13,515 lb); rear 6,642 kg (14,645 lb) — 48%/52% distribution |
| Static linear load (PLI) | With ROPS: 30 kg/cm (168 lb/in); without ROPS: 29 kg/cm (162 lb/in) |
Dimensions
| Overall length | 4,953 mm (16 ft 3 in) |
| Overall width | 2,311 mm (7 ft 7 in) |
| Height at steering wheel | 2,362 mm (7 ft 9 in) |
| Height at top of ROPS | 3,113 mm (10 ft 3 in) |
| Wheelbase | 3,150 mm (10 ft 4 in) |
| Drum width | 2,130 mm (84 in) |
| Drum diameter | 1,300 mm (51 in) |
| Drum shell thickness (nominal) | 22 mm (0.87 in) |
| Curb clearance (vertical) / side clearance | Curb clearance 394 mm (15.15 in); side clearance 89 mm (3.5 in) |
| Minimum turning radius | Inside drum edge 4,318 mm (14 ft 2 in); outside drum edge 6,655 mm (21 ft 10 in) |
Performance
| Travel speed, low range | 0-6.4 km/h (0-4 mph), forward and reverse |
| Travel speed, high range | 0-12.2 km/h (0-7.6 mph), forward and reverse |
| Vibration frequency | 44 Hz (2,640 vpm) |
| Nominal amplitude, 5-position selectable | High 1.04 mm (0.041 in), mid-high 0.90 mm (0.035 in), mid 0.73 mm (0.029 in), mid-low 0.56 mm (0.022 in), low 0.36 mm (0.015 in) |
| Centrifugal force per drum, 5-position selectable | High 159 kN (35,745 lbf), mid-high 138 kN (31,024 lbf), mid 111 kN (24,954 lbf), mid-low 85 kN (19,109 lbf), low 58 kN (13,039 lbf) |
| Steering / articulation | ±32° steering angle, ±10° frame oscillation, 60/40 off-center articulation (60% of machine length behind pivot) |
| Gradeability | Not published on the factory spec sheet for this model — verify with dealer if required |
Service capacities (summary)
| Fuel tank | 250 L (66 gal) |
| Hydraulic tank (full level) | 60 L (15 gal) |
| Engine oil, with filter | 17 L (4.5 gal) |
| Cooling system | 31 L (8.2 gal) |
| Vibratory bearing lubrication | 11 L (2.9 gal) |
| Drum water spray tanks | 2 x 600 L (2 x 158.5 gal) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
CB-634D fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase, with filter (Cat 3116T turbocharged diesel) | 17 L (4.5 US gal) | Cat DEO (Diesel Engine Oil). SAE 15W-40 covers most ambient ranges; step down to SAE 10W-30 for colder starts, SAE 5W-40 or 0W-40 for sustained sub-zero climates. Match viscosity to the coldest expected start-up temperature, not just average ambient. |
| Cooling system | 31 L (8.2 US gal) | Cat ELC (Extended Life Coolant), premixed 50/50 ethylene-glycol/water, gives the longest service interval and best water-pump/radiator protection. Cat DEAC (Diesel Engine Antifreeze/Coolant) is the conventional alternative with a shorter change interval. Mix ratio adjusted for local freeze-protection requirement. |
| Fuel tank | 250 L (66 US gal) | No. 2-D diesel (ULSD). Switch to a No. 1-D winter blend or use a cold-flow additive in cold climates to prevent fuel waxing/gelling. |
| Vibratory (exciter) bearing lubrication | 11 L (2.9 US gal) | Cat TDTO (Transmission/Drive Train Oil), SAE 30 for normal/warm ambient; drop to SAE 10W in cold climates for easier cold start of the exciter housing. |
| Hydraulic system and tank | 60 L (15 US gal) at tank full mark; total system volume including lines and drive motors is higher | Cat TDTO, SAE 10W as the standard fill (shared spec across hydrostatic drive motors and hydraulic circuit); SAE 30 recommended where sustained high ambient temperatures call for a heavier grade. Circuit is protected by a 10-micron charge oil filter. |
| Water (spray) tank, drum wetting system | 2 x 600 L (2 x 158.5 US gal) | Clean water for drum wetting/anti-stick spray. Add a proprietary wetting agent as needed; in below-freezing ambient, add the recommended anti-freeze concentrate or drain the system to prevent line and nozzle icing. |
| Grease (spec only, no reservoir capacity) | Not applicable - lubricated at individual grease points | Cat Multipurpose Grease (MPGM), NLGI Grade 2 lithium-complex EP grease, for articulation joint, drawbar, and cylinder pins. Cat Ultra 5 Moly grease is the extended-service alternative for high-load pivot points. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar CB-634D 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 |
|
| Every 6,000 h |
|
Servicing the CB-634D beyond the schedule
Predictive Maintenance & Fluid Analysis
Run scheduled oil sampling on the 3116T engine, hydraulic system, and vibratory bearing oil at every service interval. Wear metals in the vibratory sample flag eccentric shaft bearing fatigue before it reaches the drum shell. Track coolant condition on the turbocharged diesel to catch head gasket or oil cooler seepage early. Watch hydraulic oil cleanliness closely, since the propel and vibratory circuits share the same tank and fluid spec, so contamination migrates fast between drum drive and steering functions.
Corrective & Common Repairs
Expect HEUI fuel system wear on the 3116T. Injector and pump issues show up as hard starts and power loss and are the most common engine complaint on this platform. Drum scrapers and water spray nozzles wear or clog quickly on asphalt duty and need frequent adjustment or replacement. Propel pump and motor case-drain leaks, articulation joint bushing wear, and ROPS mount fatigue cracking from continuous vibratory loading round out the recurring repair list on working D-series units.
Overhaul & Rebuild Points
High-hour CB-634D units typically need an inframe overhaul of the 3116T before the vibratory system does. Turbocharger, injectors, and the HEUI pump wear out ahead of the block on most machines. Vibratory exciter bearings and eccentric shaft seals are the second major rebuild point; leaking seals let water into the bearing oil and accelerate failure. Drum bearings, propel motor seals, and articulation pins are the remaining wear items worth budgeting for on any rebuild-candidate machine.
Seasonal & Environment Servicing
Cold-weather starts on the 3116T HEUI system need fresh fuel, a working ether or grid heater, and a block heater below freezing to avoid hard starts and injector stress. In hot asphalt-paving conditions, keep the water spray system flowing and nozzles clear, since drum pickup accelerates scraper wear and drum shell damage if spray fails. Clean the radiator and hydraulic oil cooler of asphalt dust and debris regularly to prevent overheating during summer paving seasons.
CB-634D common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 112-6523 | Insert-Fuel Filter | Fuel system service | Check fitment → |
| 1R-0753 | Filter-Fuel | Fuel system service | Check fitment → |
| 1R-0751 | Filter-Fuel | Fuel system service | Check fitment → |
| 7E-5189 | Valve As | Fuel system service | Check fitment → |
| 117-4089 | Element-Water Separator | Fuel system service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
CB-634D fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Coolant Temperature warning lamp (gauge in red zone) | Engine coolant temperature has exceeded normal operating range | Low coolant level, blocked radiator fins, failed thermostat, slipping or broken fan belt | Stop in a safe spot, let engine cool, check coolant level and radiator for debris, inspect fan belt tension before restarting |
| Engine Oil Pressure warning lamp | Engine oil pressure has dropped below the safe minimum | Low oil level, worn oil pump, plugged oil filter, failed oil pressure sending unit or switch | Shut engine down immediately, check oil level and look for leaks, test the oil pressure switch before restarting |
| Alternator / Battery Charge warning lamp | Charging system is not maintaining battery voltage | Loose or worn belt, failed alternator, corroded or loose battery terminals | Check belt tension and condition, clean and tighten battery connections, test alternator output |
| Hydraulic Oil Temperature warning lamp | Hydraulic system oil temperature above normal operating range | Low hydraulic fluid, clogged oil cooler fins, extended high-load operation in hot ambient conditions | Idle machine to allow cooling, check fluid level, clean cooler core, inspect cooling fan drive |
| Air Cleaner Restriction indicator | Intake air filter restriction has reached the service limit | Clogged primary or secondary air filter element from dusty jobsite conditions | Inspect and service or replace the air filter element, reset the restriction indicator |
| Forward Propel fault (no digital code at the operator station; logged in the ground-drive controller and read with Cat ET) | Machine will not propel forward, or propel is intermittent, traced by the controller to the propel circuit | Propel joystick position sensor out of calibration or faulty, open/short in wiring between the ground-drive ECM and propel solenoid, or a sticking propel solenoid valve | Verify the joystick returns to and reads correct neutral/detent position, inspect wiring and connectors between the ECM and propel solenoid for damage or corrosion, recalibrate propel control through the machine's test mode |
| Secondary/Parking Brake warning lamp flashing | Brake circuit or brake-release interlock not satisfied; machine stays in brake-applied, propel-disabled state | Low hydraulic charge pressure preventing brake release, faulty brake pressure switch, or a fault in the brake solenoid circuit | Check hydraulic charge pump pressure at the brake release port, inspect the brake pressure switch and wiring, verify the brake release solenoid operates when commanded |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
CB-634D attachments & work tools
Machine type and work-tool scope
The CB-634D is a double-drum vibratory asphalt compactor, not an attachment-based carrier. It has no quick-coupler or work-tool mounting system like a skid steer or excavator; its front and rear steel drums are fixed, integral compaction modules rather than swappable tools.
Drum/compaction package
Twin machined-steel smooth drums, drum width 2130 mm (84 in), drum diameter 1300 mm (51 in), nominal shell thickness about 22 mm (0.87 in). Weight split is roughly 48% front / 52% rear on this class, giving static linear load around 29-30 kg/cm (162-168 lb/in) depending on ROPS configuration.
Vibratory amplitude system
Five selectable amplitudes (low, mid-low, mid, mid-high, high) let one machine cover breakdown, intermediate and finish passes without swapping equipment. Frequency is about 44 Hz (2640 vpm), with per-drum centrifugal force ranging roughly 58 kN at low amplitude up to about 159 kN at high amplitude, vibration selectable independently per drum.
Water spray / drum-wetting kit
Standard corrosion-proof dual-tank, dual-pump spray system (two polyethylene tanks, about 600 L / 158.5 gal each) with continuous or intermittent spray and auto front/rear tank alternation for even weight distribution. Optional add-ons include water distribution mats and coco mats to keep drums wetted in hot, dry or windy conditions, plus a freeze-protection kit with an in-line antifreeze bottle for overnight protection.
Drum scrapers and drum covers
Drum scrapers are factory-fitted to strip asphalt buildup from the drum surface during operation. Drum covers are an optional guarding item that cap both drum ends to shield internal drum components (bearings, spray plumbing) from contamination; distribution mats also give secondary cleaning of minor asphalt residue the scrapers miss.
ROPS/canopy configuration
Offered both with and without ROPS canopy; this changes operating weight (about 12,800 kg / 28,160 lb with ROPS versus about 12,389 kg / 27,255 lb without) and overall height. Lighting and beacon options can be installed on either configuration.
Lighting and warning options
Optional high-intensity discharge (HID) xenon lighting kit adds forward- and rear-facing lights for night work, functional at high and low idle. A rotating amber beacon light is available as a separate option for ground-personnel visibility around the machine.
Steering and articulation configuration
Standard 60/40 off-center articulation (60% of machine length behind the pivot, 40% forward) combined with priority-demand hydraulic power-assist steering; this is a factory frame/steering arrangement rather than a work tool, aimed at curb and object clearance during compaction passes.
All CB-634D assemblies by section
Every catalogued assembly group for the Caterpillar CB-634D. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
6i-2551 Air Cleaner Gp
| 6I***99 | Filter Element As-Air; (Primary) | 1 |
| 6I***00 | Filter Element As-Air; (Secondary) | 1 |
| 6I***51 | Air Cleaner Group | 1 |
209-1295 Air Cleaner Gp
| 13***78 | Hose | 1 |
| 16***87 | Cap-Air Cleaner | 1 |
| 1P***86 | Adapter | 1 |
7w-9248 Manifold Gp-Exhaust
| 10***38 | Manifold-Exhaust | 1 |
| 11***00 | Gasket-Manifold | 3 |
| 14***48 | Bolt; (M10x1.5x65-mm)(M10x1.50x65mm) | 12 |
4w-3480 Manifold Gp-Inlet
| 11***50 | Gasket | 1 |
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 3 |
| 4W***80 | Manifold Group-Inlet; Inlet Manifold Group | 1 |
209-1433 Muffler Gp
| 09***88 | Bolt; (M14x2x30-mm) | 2 |
| 11***38 | Tube As | 1 |
| 11***90 | Tube | 1 |
135-6635 Turbocharger Gp
| 10***64 | Cartridge Group-Turbocharger | 1 |
| 11***59 | Housing; (Turbine) | 1 |
| 12***39 | Housing (Compressor) | 1 |
141-8274 Turbocharger Gp
| 13***35 | Turbocharger Group | 1 |
| 14***74 | Turbocharger Group | 1 |
| 3E***17 | Locknut; (M10x1.5-Thd)(Spiralock) | 4 |
Basic Engine
108-5759 Camshaft Gp
| 10***94 | Plate-Thrust | 1 |
| 10***59 | Camshaft Group; (Single) | 1 |
| 13***76 | Camshaft Assem. | 1 |
4w-3462 Carrier Gp-Seal
| 23***83 | Gasket | 1 |
| 24***76 | Seal | 1 |
| 2W***46 | Cover | 1 |
105-1699 Cover Gp-Cylinder Block
| 10***99 | Cover Group-Cylinder Block | 1 |
| 11***18 | Bolt As; (M8x1.25x16-mm) | 4 |
| 13***40 | Spacer; (9x15x15-mm Thk) | 1 |
7l-0004 Cover Gp-Front Housing
| 10***20 | Cover As-Front | 1 |
| 13***19 | Seal-Integral; (Integral) | 1 |
| 1U***46 | Sealant (For Locations A) | 0 |
4w-2172 Cover Gp-Valve Mechanism
| 11***40 | Gasket; (Valve Cover) | 1 |
| 11***60 | Cover | 1 |
| 4W***72 | Cover Group-Valve Mechanism; Valve Mechanism Cover Group | 1 |
4w-2197 Crankshaft Gp
| 10***08 | Bearing-Main; (Standard) | 6 |
| 14***62 | Bearing; (0.25mm Undersize) | 0 |
| 14***64 | Bearing; (0.5mm Undersize) | 0 |
149-5403 Cylinder Block Gp
| 14***02 | Pin, Cylinder Block As | 1 |
| 14***03 | Cylinder Block Group | 1 |
| 21***86 | Bearing-Sleeve; (Camshaft) | 1 |
2w-9746 Cylinder Block Gp
| 14***03 | Cylinder Block Group | 1 |
| 1W***07 | Sleeve | 2 |
| 2W***46 | Cylinder Block Group | 1 |
190-9066 Cylinder Head As
| 11***61 | Sleeve | 6 |
| 16***63 | Insert-Valve Seat; (Inlet) | 6 |
| 19***66 | Cylinder Head As | 1 |
140-7371 Cylinder Head Gp
| 11***36 | Seal-Valve Stem | 12 |
| 13***19 | Valve-Exhaust | 6 |
| 14***71 | Cylinder Head Group | 1 |
159-0305 Cylinder Head Gp
| 10***32 | Gasket; (1.61mm Thk) | 1 |
| 12***36 | Bolt-Hex Head; (M20x2.5x160mm) | 14 |
| 14***71 | Cylinder Head Group | 1 |
7c-2428 Damper & Pulley Gp
| 10***50 | Pulley; (3 Groove) | 1 |
| 20***88 | Damper Assem. | 1 |
| 6V***30 | Bolt; (M10x1.5x60-mm) | 8 |
7c-4532 Drain Gp-Engine Oil
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 1 |
| 6V***38 | Valve-Shutoff; (Engine Oil Pan Drain) | 1 |
| 7C***32 | Drain Group-Oil Pan; Oil Pan Drain Group | 1 |
158-2203 Drive Gp-Accessory
| 10***69 | Adapter | 1 |
| 13***19 | Seal-Integral; (Integral) | 1 |
| 15***03 | Drive Group-Accessory | 1 |
7c-0044 Drive Gp-Fan
| 4W***03 | Cup-Roller Bearing | 2 |
| 4W***04 | Cone-Roller Bearing | 2 |
| 4W***42 | Spacer; (35.3x45.5x38.331-mm Thk) | 1 |
106-4856 Drive Gp-Pump
| 10***33 | . Pedestal, Flange-Nylon | 1 |
| 10***70 | Adapter | 1 |
| 10***56 | Drive Group-Pump | 1 |
7c-6998 Drive Gp-Water Pump
| 10***67 | Plate As-Idler | 1 |
| 11***04 | Pulley As-Idler | 1 |
| 11***38 | Pulley As-Idler | 1 |
9y-2755 Flywheel Gp
| 1W***64 | Gear-Flywheel Ring; (126-Teeth) | 1 |
| 20***82 | Flywheel As | 1 |
| 5P***45 | Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate) | 8 |
101-4540 Gear Gp-Front
| 10***07 | Shaft-Cam Idler | 1 |
| 10***08 | Plate-Retaining | 1 |
| 10***40 | Gear Group-Front | 1 |
9y-4856 Housing Gp-Flywheel
| 1B***70 | Plug-Pipe; (Drain) | 1 |
| 1B***74 | Plug,Pipe Base Assembly,Engine Oil Filter Assembly | 1 |
| 2P***94 | Plug-Sealing | 1 |
101-4539 Housing Gp-Front
| 10***39 | Housing Group-Front | 1 |
| 10***11 | Plug | 2 |
| 13***42 | Housing-Front | 1 |
4w-2515 Lifting Gp-Engine
| 4W***82 | Plate-Lifting; (Rear)(Rear) | 1 |
| 4W***83 | Plate-Lifting; (Front) | 1 |
| 4W***15 | Lifting Group | 1 |
122-2275 Mounting Gp-Engine Flexible
| 10***38 | Mount As | 2 |
| 12***28 | Mount As | 1 |
| 12***75 | Mounting Group-Engine Flexible | 1 |
4w-0269 Pan Gp-Oil -Engine
| 11***77 | Pan-Oil | 1 |
| 11***19 | Plug-Magnetic; (Engine Oil Pan Drain) | 1 |
| 26***16 | Gasket-Oil Pan; (Engine) | 1 |
108-5758 Piston & Rod Gp
| 10***63 | Body As-Piston | 1 |
| 10***87 | Ring-Piston (Top-Chrome) | 1 |
| 10***58 | Piston & Rod Group | 1 |
4w-5429 Pulley Gp-Crankshaft
| 2W***81 | Plate-Clamp; (Pulley Clamp) | 1 |
| 4W***29 | Pulley Group-Crankshaft; Crankshaft Pulley Group | 1 |
| 7W***73 | Pulley-Crankshaft; (1-Groove) | 1 |
107-7722 Rocker Arm Gp
| 0L***26 | Plug -13mm(.512 In.) Outside Dia. | 1 |
| 10***91 | Seat-Wear | 1 |
| 10***76 | Rocker Arm As; (Unit Injector) | 1 |
115-4203 Seal Gp-Crankshaft
| 11***03 | Seal Group-Crankshaft | 1 |
| 22***09 | Seal Group-Crankshaft; (Rear) | 1 |
| 24***39 | Seal-Crankshaft; (Front)(Front) | 1 |
4p-4372 Mechanism Gp-Fuel Pump & Valve
| 10***22 | Rocker Arm Group-Valve | 6 |
| 14***47 | Arm As-Lifter | 4 |
| 2D***42 | Ball 6.35 mm(.25 In.)Diameter | 2 |
Braking System
208-9812 Lines Gp-Brake & Shift
| 10***03 | Plate-Cover | 5 |
| 10***16 | Hose As | 1 |
| 10***35 | Hose As | 1 |
209-1292 Pump & Mtg Gp-Brake
| 08***35 | Tee | 1 |
| 11***88 | Pump Group-Brake; -Parking Brake Release | 1 |
| 14***25 | Connector As. | 1 |
115-8488 Pump Gp-Hand -Parking Brake Release
| 11***88 | Pump Group-Brake; -Parking Brake Release | 1 |
| 11***20 | Pump | 1 |
| 11***21 | Valve-Check | 2 |
195-7542 Valve & Mtg Gp-Brake & Shift
| 08***35 | Tee | 1 |
| 11***75 | Valve-Needle | 1 |
| 14***05 | Adapter Group | 1 |
279-6525 Valve & Mtg Gp-Solenoid -Auxiliary
| 24***81 | Flange | 1 |
| 27***66 | Manifold | 1 |
| 27***23 | Valve Group-Solenoid; -Auxiliary | 1 |
196-1966 Valve Gp-Brake & Shift
| 11***48 | Kit-Seal | 1 |
| 13***78 | Kit-Seal | 1 |
| 19***66 | Valve Group-Brake & Shift | 1 |
279-6523 Valve Gp-Solenoid -Auxiliary
| 24***81 | Flange | 1 |
| 24***12 | Kit-Seal; (Solenoid Valve) | 1 |
| 27***23 | Valve Group-Solenoid; -Auxiliary | 1 |
Cooling System
7c-5467 Adapter Gp-Fan
| 6I***37 | Adapter; (Fan) | 1 |
| 7C***67 | Adapter Group-Fan | 1 |
| 8T***77 | Bolt-Plt; (M8 X 1.25 X 90) | 6 |
115-6951 Cooler Gp-Engine Oil
| 11***51 | Cooler Group-Engine Oil | 1 |
| 23***54 | Gasket | 1 |
| 23***55 | Gasket | 1 |
121-9533 Fan Gp-Blower
| 12***33 | Fan Group-Blower | 1 |
| 12***78 | Fan-Blower | 1 |
| 12***11 | Guard As-Fan | 1 |
4w-6620 Lines Gp-Water
| 12***47 | Housing-Water Regulating | 1 |
| 12***69 | Regulator-Water Temperature; (94-Deg C) | 1 |
| 14***95 | Plug As | 2 |
159-3142 Pump Gp-Water
| 14***88 | Seal As; (Water Pump) | 1 |
| 15***52 | Impeller-Pump | 1 |
| 15***42 | Pump Group-Water | 1 |
7c-7030 Pump Gp-Water
| 2M***53 | Seal--To Seal Brake Housing To Main Housing | 1 |
| 4J***24 | Seal 46.99 mm(1.85 In.) I.D. | 1 |
| 7C***38 | Pump Group-Water | 1 |
7c-6438 Pump Gp-Water
| 15***42 | Pump Group-Water | 1 |
| 1J***71 | Seal (10.52 Degrees I.D.); Seal-O-Ring -- To Adapter | 1 |
| 3D***24 | O-Ring - For Oil Drain & Level Plug (Items 3 & 7) | 1 |
203-7108 Radiator & Hyd Oil Cooler Gp
| 12***43 | Shroud As | 1 |
| 12***25 | Mount As | 1 |
| 14***57 | Elbow As. | 1 |
Electrical And Starting System
244-1090 Alarm Gp
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 2 |
| 24***90 | Alarm Group; -Backup | 1 |
105-2813 Alternator Gp-Charging
| 10***13 | Alternator Group-Charging | 1 |
| 11***57 | Pulley-Alternator | 1 |
| 11***59 | Frame As-Alternator | 1 |
195-7546 Alternator Gp-Charging
| 10***13 | Alternator Group-Charging | 1 |
| 19***46 | Alternator Group-Charging | 1 |
| 3P***11 | Spacer (11.13mm Thk); (11.13-mm Thk) | 2 |
195-7536 Battery & Wiring Gp
| 03***97 | Boot | 1 |
| 10***00 | Terminal As-Battery; (Remote Jump Start, Positive) | 1 |
| 11***24 | Cable As | 1 |
195-7535 Electrical Ar
| 12***28 | Warning Group-Backup | 1 |
| 19***35 | Electrical Ar | 1 |
| 19***36 | Battery & Wiring Group | 1 |
206-1311 Lamp Gp-Flood
| 20***11 | Lamp Group-Flood | 1 |
| 20***38 | Lamp-Halogen; (12/24-Volt, 35-Watt) | 1 |
| 21***82 | Lens; (Floodlight) | 1 |
9x-9484 Lamp Gp-Flood -Roading Lights
| 8T***37 | Screw; (Machine) (M4x0.7x12mm) | 2 |
| 8T***21 | Washer-Hard; (11x21x2.5-mm Thk)(M10x1.50x30mm) | 1 |
| 8T***33 | Nut (M10x1.50 Thd) | 1 |
144-9933 Lamp Gp-Panel Illumination -Backlight
| 10***04 | Kit-Receptacle; (4-Pin)(Start Switch) | 1 |
| 14***33 | Lamp Group-Panel Illumination; -Backlight | 1 |
| 18***10 | Lamp; (12-Volt)(Miniature) | 2 |
185-7016 Lamp Gp-Warning Beacon -Magnetic Mount
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***16 | Lamp Group-Warning Beacon; -Magnetic Mount | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 2 |
211-4902 Lighting Gp-Flood
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 2 |
| 15***70 | Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness) | 6 |
| 15***74 | Kit-Connecting Plug; (6-Pin)(Cat Electronic Display Harness) | 1 |
195-7587 Lighting Gp-Flood
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 12***10 | Support As | 4 |
| 13***47 | Harness As-Lighting; (Floodlights) | 4 |
210-0162 Lighting Gp-Warning Beacon -Platform
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 11***99 | Gasket; (Air Conditioner Control) | 1 |
| 15***84 | Clamp-Half | 4 |
210-0161 Lighting Gp-Warning Beacon -Rops
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***16 | Lamp Group-Warning Beacon; -Magnetic Mount | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 1 |
7c-7695 Solenoid Gp-Shutoff
| 15***51 | Solenoid As; (Fuel Shutoff) | 1 |
| 4B***74 | Washer (Required Only When Bosch Alternator Is Fitted) | 1 |
| 4K***88 | Seal; Adapter To Oil Pump Outlet Manifold | 1 |
196-8900 Starting Aid Gp
| 10***58 | Cover-Inlet Manifold | 1 |
| 10***62 | Elbow | 1 |
| 12***42 | Gasket | 2 |
151-8090 Starting Motor Gp-Electric
| 03***23 | Bolt; (1/4-28x1-In) | 5 |
| 10***02 | Housing As | 1 |
| 15***90 | Starting Motor Group-Electric; -12-Volt | 1 |
195-7554 Starting Motor Gp-Electric
| 11***73 | Bolt-12 Point Head; (M10x1.5x35-mm) | 3 |
| 13***30 | Wire As | 1 |
| 15***90 | Starting Motor Group-Electric; -12-Volt | 1 |
7n-0718 Switch Gp-Disconnect -Battery
| 2H***22 | Lockwasher | 2 |
| 6F***45 | Nut-Full; (3/8-24-Thd) | 2 |
| 7N***18 | Switch As-Disconnect; -Battery-Ground Level | 1 |
175-2303 Switch Gp-Magnetic
| 01***80 | Lockwasher | 2 |
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 17***03 | Switch Group-Magnetic; -Air Inlet Heater | 1 |
175-2302 Switch Gp-Magnetic
| 01***80 | Lockwasher | 2 |
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 17***02 | Switch Group-Magnetic; -Starting Motor | 1 |
3e-7278 Switch Gp-Magnetic
| 17***02 | Switch Group-Magnetic; -Starting Motor | 1 |
| 17***03 | Switch Group-Magnetic; -Air Inlet Heater | 1 |
| 3E***78 | Switch Group-Magnetic; -Starting Motor | 1 |
120-0128 Warning Gp-Backup
| 12***28 | Warning Group-Backup | 1 |
| 3T***15 | Alarm Group; (Backup)(Back-Up) | 1 |
| 7X***38 | Bolt-Plt; (M8 X 1.25 X 100) | 2 |
283-7519 Wiring Gp-Console
| 10***06 | Receptacle Kit; (Includes Wedge And Receptacle Assem.) | 1 |
| 11***92 | Terminal-Receptacle; (18-Ga To 20-Ga) | 12 |
| 11***93 | Terminal-Receptacle | 1 |
291-1829 Wiring Gp-Console
| 13***40 | Resistor As-Connection; (3-Pin) | 1 |
| 17***00 | Suppressor-Arc | 1 |
| 29***94 | Harness As-Console | 1 |
195-7537 Wiring Gp-Engine
| 09***26 | Lockwasher-Tooth; (M4 Id) | 3 |
| 09***43 | Packing | 1 |
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
216-7930 Wiring Gp-Machine
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 3 |
| 10***05 | Kit-Receptacle; (6-Pin)(Display Monitor Harness) | 1 |
| 10***06 | Receptacle Kit; (Includes Wedge And Receptacle Assem.) | 1 |
293-1030 Wiring Gp-Platform
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 4 |
| 10***05 | Kit-Receptacle; (6-Pin)(Display Monitor Harness) | 4 |
| 11***99 | Gasket; (Air Conditioner Control) | 1 |
195-7570 Wiring Gp-Platform
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 4 |
| 10***05 | Kit-Receptacle; (6-Pin)(Display Monitor Harness) | 1 |
| 11***99 | Gasket; (Air Conditioner Control) | 1 |
283-6677 Wiring Gp-Rear
| 13***89 | Clip; (Ladder) | 6 |
| 18***58 | Suppressor-Arc | 1 |
| 28***77 | Wiring Group-Rear | 1 |
Engine Arrangement
196-8903 Engine Ar
| 10***39 | Housing Group-Front | 1 |
| 10***40 | Gear Group-Front | 1 |
| 10***95 | Control Group-Fuel Injection | 1 |
195-7545 Installation Ar-Engine
| 10***08 | Valve Group-Fluid Sampling; -Coolant | 1 |
| 10***56 | Drive Group-Pump | 1 |
| 12***33 | Fan Group-Blower | 1 |
Frame And Body
195-7538 Bumper Gp
| 08***45 | Clamp | 8 |
| 19***38 | Bumper Group | 1 |
| 21***43 | Bumper As | 1 |
251-4687 Door Gp-Access
| 08***82 | Retainer | 2 |
| 08***08 | Handle | 1 |
| 11***35 | Latch As | 1 |
197-3652 Door Gp-Access
| 08***82 | Retainer | 2 |
| 08***08 | Handle | 1 |
| 10***86 | Hinge | 1 |
197-3651 Door Gp-Access
| 08***82 | Retainer | 2 |
| 08***08 | Handle | 1 |
| 10***86 | Hinge | 1 |
195-7529 Enclosure Gp-Engine
| 08***83 | Catch | 4 |
| 12***14 | Support | 4 |
| 19***29 | Enclosure Group-Engine | 1 |
233-9625 Frame As-Rear
| 10***04 | Plate As | 4 |
| 10***06 | Plate As | 3 |
| 10***66 | Plate | 2 |
195-7530 Frame Gp-Main
| 12***86 | Plate | 1 |
| 12***48 | Plate As; (Lh) | 1 |
| 12***49 | Plate As; (Rh) | 1 |
208-8402 Guard Gp-Drum
| 20***02 | Guard Group-Drum | 1 |
| 22***66 | Cover | 8 |
| 7X***29 | Washer; (11x25x3-mm Thk) | 80 |
116-6679 Guard Gp-Platform
| 08***95 | Suspension Pad | 4 |
| 11***65 | Handrail As; (Front) | 1 |
| 11***66 | Plate As | 4 |
223-3351 Hitch Gp-Oscillating
| 09***07 | Bolt; (M16x2x120-mm) | 1 |
| 10***41 | Spacer; (0.8-mm Thk) | 2 |
| 10***46 | Spacer; (0.25-mm Thk) | 2 |
125-1347 Scraper Gp-Smooth Drum
| 12***31 | Plate | 4 |
| 12***32 | Plate | 4 |
| 12***47 | Scraper Group-Smooth Drum | 1 |
Fuel System
129-1102 Base Gp-Fuel Filter
| 11***23 | Insert-Fuel Filter | 1 |
| 12***01 | Valve Group-Check; -Fuel-Fuel Filter | 1 |
| 12***02 | Base Group-Fuel Filter | 1 |
164-4858 Cap Gp-Fuel Filler -Extreme Service, Lockable
| 16***58 | Cap Group-Fuel Filler; -Extreme Service, Lockable | 1 |
| 19***75 | Cover As-Filter; (Fuel Cap) | 1 |
| 9X***00 | Seal-O-Ring | 1 |
105-1695 Control Gp-Fuel Injection
| 10***95 | Control Group-Fuel Injection | 1 |
| 16***56 | Control Group-Fuel Injection | 1 |
| 6V***83 | Bolt (16mm Long); (M6x1x16-mm) | 4 |
7e-9429 Control Gp-Governor
| 5C***53 | Bolt (M6x1.00x16mm); (M6x1x16mm Thk) | 1 |
| 6I***82 | Lever As | 1 |
| 6I***83 | Spring | 2 |
210-0002 Control Gp-Governor
| 09***66 | Washer; (Hard) (4.5x9x1mm Thk) | 2 |
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 11***18 | Clip | 2 |
7e-8794 Drive Gp-Gov & Transfer Pump
| 10***68 | Gear As-Drive; (44-Teeth), . Body | 1 |
| 10***85 | Lever-Shutoff; (Output) | 1 |
| 1W***65 | Ring-Retaining | 1 |
7w-4812 Fastener Gp-Fuel Inj Pump
| 1T***68 | Seal-O-Ring; (Fuel Injection Pump) | 1 |
| 6F***73 | Seal--To Top Cover On Selector Valve | 1 |
| 6V***18 | Bolt (M8x1.25x45mm); (M8x1.25x35-mm) | 3 |
1r-0753 Filter-Fuel
| 1R***53 | Filter-Fuel | 1 |
133-3062 Governor Gp-Unit Injector
| 10***90 | Spring-Air Side | 1 |
| 10***92 | Spring-Servo | 1 |
| 10***93 | Spring-Return | 1 |
133-3960 Governor Gp-Unit Injector
| 10***91 | Spring-Oil Side | 1 |
| 10***89 | Cam As | 1 |
| 13***62 | Governor Group-Unit Injector | 1 |
132-5238 Governor Gp-Unit Injector
| 13***38 | Governor Group-Unit Injector | 1 |
| 13***60 | Governor Group-Unit Injector | 1 |
| 7W***12 | Fastener Group-Governor; Fastener Group(Governor) (~1c K5811) | 1 |
209-1358 Lines Gp-Drain
| 14***40 | Adapter; (Straight) (-8 Orb X -8 Orfs) | 1 |
| 14***57 | Union Bulkhead; (Orfs) | 2 |
| 16***79 | Connector Group | 1 |
196-3167 Lines Gp-Fuel
| 10***03 | Plate-Cover | 1 |
| 10***34 | Plate | 1 |
| 11***88 | Hose As | 1 |
142-2915 Lines Gp-Fuel Filter
| 00***64 | End; (Hose) | 2 |
| 09***61 | Strap; (Cable) | 1 |
| 10***29 | Hose; (60-cm) | 0 |
107-7731 Lines Gp-Fuel Ratio Control
| 10***80 | Tube Assem. | 1 |
| 10***31 | Lines Group-Fuel Ratio Control; Air Fuel Ratio Control Lines Group, Angle | 1 |
| 3J***54 | Packing,Preformed Part Of Kit P/N 5r***27 | 1 |
7w-8434 Lines Gp-Governor Oil
| 3J***54 | Packing,Preformed Part Of Kit P/N 5r***27 | 2 |
| 4J***77 | Seal - O - Ring (11.23mm Od) | 2 |
| 6V***28 | Elbow-Face Seal (For 6.35mm Od Tube) | 1 |
107-7732 Pump Gp-Fuel Injection
| 10***32 | Pump Group-Fuel Injection | 1 |
| 11***18 | Seal-O-Ring; (26.64mm Id) | 1 |
| 12***16 | Fuel Injector Group | 1 |
127-6449 Pump Gp-Fuel Prm & Water Sep
| 11***01 | Bowl As-Water Collection | 1 |
| 11***89 | Element-Water Separator; (Water/Fuel Seperator) | 1 |
| 11***61 | Base Assem. | 1 |
196-2379 Tank Gp-Fuel
| 16***58 | Cap Group-Fuel Filler; -Extreme Service, Lockable | 1 |
| 19***23 | Adapter; (Fuel Cap) | 1 |
| 19***79 | Tank Group-Fuel | 1 |
129-1101 Valve Gp-Check -Fuel
| 03***33 | Seal-O-Ring; (12.42mm Id) | 1 |
| 12***01 | Valve Group-Check; -Fuel-Fuel Filter | 1 |
| 6V***23 | Ring; (Backup) (13.16mm Id) | 1 |
Hydraulic System
177-6949 Actuator Gp-Pump -Propel
| 11***73 | Seal-O-Ring | 2 |
| 14***10 | Cover | 1 |
| 14***11 | Cover | 1 |
190-7633 Actuator Gp-Pump
| 11***58 | Ring; (5.77mm Thk) | 1 |
| 11***59 | Ring; (5.82mm Thk) | 1 |
| 11***60 | Ring; (5.87mm Thk) | 1 |
214-9032 Cylinder Gp-Hydraulic
| 03***69 | Bearing | 1 |
| 21***32 | Cylinder Group-Hydraulic | 1 |
| 22***93 | Kit-Seal | 1 |
209-2334 Filter & Mtg Gp-Hydraulic
| 14***07 | Adapter As | 1 |
| 14***28 | Connector Assem. | 1 |
| 14***47 | Elbow; (-12 Orb/Orfs) | 2 |
215-7317 Head Gp-Pump
| 08***72 | Plug-O-Ring | 3 |
| 11***79 | Bushing; (External) | 1 |
| 11***80 | Bushing; (Internal) | 1 |
190-7635 Head Gp-Pump
| 08***72 | Plug-O-Ring | 1 |
| 10***98 | Sleeve | 1 |
| 11***28 | Screw | 2 |
195-7539 Hydraulic Ar
| 19***39 | Hydraulic Ar | 1 |
| 19***40 | Lines Group-Propel | 1 |
| 19***41 | Pump & Mtg Group-Propel | 1 |
209-1281 Hydraulic Ar-Auxiliary
| 20***91 | Lines Group-Steering | 1 |
| 20***84 | Pump & Mtg Group-Steering | 1 |
| 20***85 | Lines Group-Hydraulic Filter | 1 |
190-5226 Kit-Pump Support
| 19***26 | Kit-Pump Support | 1 |
208-9785 Lines Gp-Hydraulic Filter
| 10***05 | Plate | 2 |
| 10***15 | Hose As | 1 |
| 10***18 | Hose As | 1 |
208-9798 Lines Gp-Hydraulic Oil Cooler
| 10***44 | Hose As | 1 |
| 11***85 | Hose As | 1 |
| 11***21 | Hose As | 1 |
135-3260 Motor Gp-Piston -Propel
| 10***17 | Seal-O-Ring | 1 |
| 10***03 | Seal-O-Ring | 1 |
| 12***98 | Seat | 3 |
197-6465 Motor Gp-Piston -Vibratory
| 12***59 | Bearing-Roller | 1 |
| 14***93 | Pin | 2 |
| 19***65 | Motor Group-Piston; -Vibratory | 1 |
150-4398 Motor Gp-Piston -Propel
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 13***61 | Motor Group-Piston | 1 |
| 15***98 | Motor Group-Piston; -Propel | 1 |
135-3261 Motor Gp-Piston
| 03***28 | Seal-O-Ring | 1 |
| 10***17 | Seal-O-Ring | 1 |
| 10***03 | Seal-O-Ring | 1 |
215-4721 Pump Gp-Gear
| 00***11 | Seal | 1 |
| 03***73 | Key; (Piston Motor) | 1 |
| 11***49 | Kit-Seal | 1 |
196-2246 Pump Gp-Piston
| 03***28 | Seal-O-Ring | 2 |
| 09***46 | Ring; (Retaining) | 1 |
| 12***94 | Plug; (Break Off) | 2 |
194-3253 Pump Gp-Piston
| 09***45 | Plug-Hex; (9/16-18 Thd) | 1 |
| 11***29 | Screw | 1 |
| 11***30 | Screw; (1-5/16-Thd) | 1 |
269-3128 Pump Gp-Piston -Propel
| 09***45 | Plug-Hex; (9/16-18 Thd) | 1 |
| 11***29 | Screw | 1 |
| 11***30 | Screw; (1-5/16-Thd) | 1 |
280-3457 Pump Gp-Piston
| 11***29 | Screw | 1 |
| 11***30 | Screw; (1-5/16-Thd) | 1 |
| 12***94 | Plug; (Break Off) | 2 |
226-2756 Rotating Gp-Motor
| 08***98 | Bearing | 1 |
| 10***65 | Circlip | 1 |
| 12***67 | Disc-Slip | 1 |
137-4581 Rotating Gp-Motor -Propel
| 11***16 | Screw | 14 |
| 13***81 | Rotating Group-Motor; -Propel | 1 |
| 13***83 | Pin-Center | 1 |
280-7343 Rotating Gp-Motor -Implement
| 12***32 | Piston | 9 |
| 12***33 | Spring-Cup | 1 |
| 12***38 | Plate-Retainer | 1 |
276-8206 Rotating Gp-Pump -Propel
| 10***65 | Circlip | 1 |
| 11***51 | Bearing | 1 |
| 19***83 | Seal-Shaft | 1 |
212-4487 Rotating Gp-Pump -Piston
| 10***65 | Circlip | 1 |
| 11***51 | Bearing | 1 |
| 11***52 | Cage | 1 |
190-7632 Rotating Gp-Pump
| 09***41 | Ring-Retaining | 1 |
| 11***57 | Pin | 1 |
| 11***40 | Cradle | 1 |
151-8877 Shaft Gp-Motor
| 13***29 | Bearing As | 1 |
| 14***35 | Shim; (2.65-mm Thk) | 1 |
| 14***36 | Shim; (2.70mm Thk) | 1 |
195-7534 Tank & Mtg Gp-Hydraulic & Fuel
| 09***47 | Bolt; (M10x1.5x36-mm) | 2 |
| 09***14 | Seal-O-Ring (Id=9.80mm) | 4 |
| 09***17 | Seal-O-Ring (Id=13.80mm) | 4 |
276-3410 Tank Gp-Hydraulic
| 14***37 | Cap As-Filler; (Hydraulic Tank) | 1 |
| 27***09 | Tank As-Hydraulic | 1 |
| 27***10 | Tank Group-Hydraulic | 1 |
283-1485 Valve & Mtg Gp-Auxiliary
| 11***18 | Clip | 1 |
| 14***36 | Adapter; (Straight) (-6 Orb X -6 Orfs) | 1 |
| 14***53 | Elbow, 45,-6 Orb To-6 Orfs-Drum Clutch Port | 2 |
215-9638 Valve Gp-Control
| 10***68 | Connector | 1 |
| 10***70 | Connector | 1 |
| 11***16 | Seal | 1 |
119-2066 Valve Gp-Flushing
| 11***66 | Valve Group-Flushing | 1 |
| 12***46 | Body-Valve | 1 |
| 2U***58 | Seal Kit Comprises: | 1 |
215-7328 Valve Gp-Pump Control -Propel
| 19***50 | Spacer | 2 |
| 19***51 | Cover | 1 |
| 19***52 | Spring | 1 |
270-1776 Valve Gp-Pump Control -Propel
| 09***45 | Plug-Hex; (9/16-18 Thd) | 1 |
| 16***57 | Plug | 2 |
| 19***50 | Spacer | 2 |
215-6861 Valve Gp-Relief -Piston
| 11***14 | Spring | 1 |
| 12***34 | Ring-Backup | 1 |
| 17***25 | Pin-Threaded | 1 |
152-1811 Valve Gp-Relief -Pressure Override
| 12***63 | Kit-Seal; (Contains Parts Marked J) | 1 |
| 15***11 | Valve Group-Relief; -Pressure Override-Hydrostatic Pump | 1 |
| 6E***07 | Locknut-Sealing | 1 |
Lubrication System
131-4810 Breather Gp -Crankcase
| 13***10 | Breather Group; -Crankcase | 1 |
| 2W***62 | Breather As-Crankcase; (Engine) | 1 |
| 4P***36 | Base | 1 |
108-8527 Filler Gp-Engine Oil
| 10***26 | Tube As | 1 |
| 10***27 | Filler Group-Oil | 1 |
| 5L***52 | Cap Assembly, Including:-; (Engine) | 1 |
7c-0271 Filter Gp-Engine Oil
| 1R***39 | Filter As-Engine Oil; (Standard Efficiency) | 1 |
| 24***64 | Spring; (Yoke) | 1 |
| 2M***80 | Seal--To Connector Pump Outlet | 1 |
7w-8420 Fumes Disposal Gp
| 4D***88 | Clip-(Slot To Fit Fastener M10 Or 3/8) | 1 |
| 6V***18 | Bolt (M8x1.25x50mm); (M8x1.25x50-mm) | 1 |
| 7C***52 | Hose-Disposal; (Fumes)(Fumes) | 1 |
107-1308 Gauge Gp-Oil Level (Dipstick)
| 10***08 | Gauge Group-Oil Level (Dipstick) | 1 |
| 10***04 | Tube As-Oil Gauge Guide | 1 |
| 1F***67 | Clip 7t***28 Cable As To Fan Shroud | 1 |
4w-2914 Lines Gp-Engine Oil
| 3P***56 | Seal-O-Ring; (21.82mm Id) | 2 |
| 4W***32 | Elbow-Outlet | 1 |
| 4W***14 | Lines Group-Engine Oil | 1 |
1w-6030 Lines Gp-Turbocharger Oil
| 1S***57 | Gasket; (Turbocharger-Oil Supply) | 1 |
| 1W***30 | Lines Group-Turbocharger Oil | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 1 |
142-2916 Mounting Gp-Engine Oil Filter
| 10***19 | Tube As | 1 |
| 14***16 | Mounting Group-Engine Oil Filter | 1 |
| 14***34 | Tube As | 1 |
200-4497 Pump Gp-Engine Oil
| 18***77 | Pump Group-Engine Oil | 1 |
| 20***97 | Pump Group-Engine Oil | 1 |
| 7W***37 | Shaft-Oil Pump | 1 |
4w-2195 Pump Gp-Engine Oil
| 20***97 | Pump Group-Engine Oil | 1 |
| 4W***95 | Pump Group-Engine Oil; Engine Oil Pump Group | 1 |
| 6V***15 | Bolt; (M10x1.5x75-mm) | 2 |
103-9408 Valve Gp-Fluid Sampling
| 10***08 | Valve Group-Fluid Sampling; -Coolant | 1 |
| 1J***71 | Seal (10.52 Degrees I.D.); Seal-O-Ring -- To Adapter | 1 |
| 3J***54 | Packing,Preformed Part Of Kit P/N 5r***27 | 1 |
Machine Arrangement
195-7528 Chassis Ar
| 12***47 | Scraper Group-Smooth Drum | 1 |
| 19***28 | Chassis Ar | 1 |
| 19***29 | Enclosure Group-Engine | 1 |
195-7526 Common Ar
| 19***26 | Common Ar | 1 |
| 19***28 | Chassis Ar | 1 |
| 19***35 | Electrical Ar | 1 |
Operator Station
190-4195 Console Gp-Instrument
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 11***98 | Connector | 1 |
| 11***60 | Kit-Service Meter; (Panel) | 1 |
190-4196 Console Gp-Operator
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 11***38 | Knob-Control | 1 |
| 11***99 | Gasket; (Air Conditioner Control) | 1 |
190-4204 Control Gp-Direction & Speed -Electronic
| 19***04 | Control Group-Direction & Speed; -Electronic | 1 |
| 21***43 | Film; (Direction And Speed Control) | 1 |
| 26***64 | Control Group-Handle; -Direction, Speed | 1 |
285-3596 Control Gp-Direction & Speed
| 11***18 | Clip | 1 |
| 21***43 | Film; (Direction And Speed Control) | 1 |
| 26***10 | Plate As-Cover | 1 |
226-2762 Control Gp-Handle
| 03***43 | Nut; (5/16-18 Thd) | 1 |
| 12***78 | Locknut; (M6x1-Thd) | 1 |
| 16***74 | Washer; (5.2x11.2x1.6-mm Thk)(5.2x11.2x1.5mm Thk) | 4 |
285-3590 Control Gp-Handle -Direction, Speed
| 03***43 | Nut; (5/16-18 Thd) | 1 |
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 12***84 | Tube-Heat Shrink; (3.2-mm Dia)(6.5-cm Each) | 0 |
234-9723 Control Gp-Handle
| 03***43 | Nut; (5/16-18 Thd) | 1 |
| 12***78 | Locknut; (M6x1-Thd) | 1 |
| 16***74 | Washer; (5.2x11.2x1.6-mm Thk)(5.2x11.2x1.5mm Thk) | 4 |
262-7164 Control Gp-Handle -Direction, Speed
| 03***43 | Nut; (5/16-18 Thd) | 1 |
| 12***78 | Locknut; (M6x1-Thd) | 1 |
| 16***74 | Washer; (5.2x11.2x1.6-mm Thk)(5.2x11.2x1.5mm Thk) | 4 |
284-0971 Control Gp-Handle
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 12***84 | Tube-Heat Shrink; (3.2-mm Dia)(6.5-cm Each) | 0 |
| 23***82 | Screw-Flat Head; (4-40x12.7-mm) | 1 |
214-0631 Control Gp-Speed -Direction
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 12***74 | Tube-Heat Shrink; (5.72-mm Dia)(950-cm) | 0 |
| 13***09 | Tube-Heat Shrink; (32-mm Dia)(16-cm) | 0 |
211-6834 Cylinder & Mtg Gp-Tilt
| 08***19 | Seal-Rubber | 2 |
| 08***72 | Lever | 1 |
| 12***19 | Cylinder As-Tilt | 1 |
205-5249 Gauge Gp-Vibratory -Vpm
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 11***80 | Sensor As-Speed; (Engine) | 2 |
190-4199 Guard Gp-Vandalism
| 15***93 | Screw-Button Head; (M4x0.7x12-mm) | 4 |
| 19***99 | Guard Group-Vandalism | 1 |
| 20***63 | Cover | 1 |
196-1906 Horn Gp-Electric
| 13***23 | Plate | 1 |
| 16***25 | Horn As; (24-Volt, Low Tone) | 1 |
| 19***06 | Horn Group-Electric | 1 |
144-9930 Module Gp-Warning Indicator -With Alarm, Function Lights
| 10***01 | Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge) | 1 |
| 14***30 | Module Group-Warning Indicator; -With Alarm, Function Lights | 1 |
| 14***34 | Gasket; (Indicator Module) | 1 |
223-6539 Module Gp-Warning Indicator -With Alarm
| 10***01 | Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge) | 1 |
| 18***35 | Pin-Connector; (16-Ga To 18-Ga) | 10 |
| 22***39 | Module Group-Warning Indicator; -With Alarm | 1 |
195-7556 Operator Ar
| 15***80 | Steering Wheel Group | 1 |
| 19***95 | Console Group-Instrument | 1 |
| 19***96 | Console Group-Operator | 1 |
195-7568 Platform Gp-Operator
| 10***39 | Wheel | 1 |
| 12***74 | Latch-Spring | 1 |
| 14***77 | Knob; (Steering Column Tilt) | 1 |
195-7569 Platform Gp-Tilt
| 11***57 | Insulation | 1 |
| 11***59 | Insulation | 1 |
| 11***61 | Insulation | 2 |
195-7571 Rops Gp
| 11***65 | Handrail As; (Front) | 1 |
| 11***66 | Plate As | 4 |
| 11***92 | Handrail As | 1 |
219-2648 Rops Gp
| 11***92 | Handrail As | 1 |
| 11***93 | Handrail As | 2 |
| 12***05 | Insulation | 1 |
191-5351 Seat Gp-Suspension -Vinyl
| 19***50 | Seat Group-Suspension; -Vinyl | 1 |
| 19***51 | Seat Group-Suspension; -Vinyl-Literature Lanyard | 1 |
| 23***67 | Seat Belt Group; (Retractable, 76-mm)(Vinyl) | 1 |
191-5350 Seat Gp-Suspension -Vinyl
| 19***50 | Seat Group-Suspension; -Vinyl | 1 |
| 23***30 | Cover-Seat; (Back, Vinyl) | 1 |
| 23***32 | Cover-Seat; (Bottom, Vinyl) | 1 |
205-5250 Speedometer Gp
| 11***48 | Lamp; (24-Volt, 3-Watt)(Clear)(Fuel Level Gauge) | 1 |
| 19***94 | Speedometer As | 1 |
| 20***50 | Speedometer Group | 1 |
Power Train
195-7574 Drive Gp-Drum
| 10***79 | Nut; (M22x1.5-mm Thd) | 10 |
| 14***25 | Connector As. | 1 |
| 19***74 | Drive Group-Drum | 1 |
195-7573 Drive Gp-Drum
| 10***79 | Nut; (M22x1.5-mm Thd) | 10 |
| 14***25 | Connector As. | 1 |
| 14***51 | Elbow Group | 1 |
195-7575 Drum Gp-Drive & Vibratory
| 18***08 | Plate | 1 |
| 18***09 | Plate | 1 |
| 19***84 | Drum As | 1 |
195-7540 Lines Gp-Propel
| 10***94 | Hose As | 1 |
| 10***03 | Plate-Cover | 3 |
| 10***41 | Clamp | 2 |
209-1283 Motor & Mtg Gp-Propel
| 10***03 | Kit; (Receptacle) (3-Pin) (Includes Receptacle As & Wedge) | 1 |
| 11***52 | Seal-O-Ring | 1 |
| 14***68 | Elbow Group | 1 |
208-9943 Motor & Mtg Gp-Propel
| 11***52 | Seal-O-Ring | 1 |
| 13***60 | Motor Group-Piston; -Propel | 1 |
| 14***68 | Elbow Group | 1 |
211-0251 Planetary Gp-Final Drive -Rear
| 09***52 | Ring | 1 |
| 09***31 | Bolt; (Socket Head) (M10x1.5x120mm) | 32 |
| 13***64 | Disc-Friction | 4 |
234-1649 Planetary Gp-Final Drive
| 09***52 | Ring | 1 |
| 09***31 | Bolt; (Socket Head) (M10x1.5x120mm) | 32 |
| 13***64 | Disc-Friction | 4 |
195-7572 Power Train Ar
| 19***72 | Power Train Ar | 1 |
| 19***73 | Drive Group-Drum | 1 |
| 19***74 | Drive Group-Drum | 1 |
195-7541 Pump & Mtg Gp-Propel
| 11***01 | Orifice | 2 |
| 11***66 | Valve Group-Flushing | 1 |
| 12***01 | Hub As-Coupling; (Propel Pump) | 1 |
121-0870 Shaft Gp-Drive
| 11***80 | Kit-Dust Cap; (Drive Shaft)(Drive Shaft) | 1 |
| 12***70 | Shaft Group-Drive | 1 |
| 12***43 | Kit-Slip Yoke | 1 |
Service Equipment And Supplies
195-7586 Film Gp
| 16***75 | Plate-Warning; (Read Operation Manual) | 1 |
| 19***86 | Film Group | 1 |
| 1G***77 | Tack-Fastener | 4 |
210-2679 Film Gp
| 16***73 | Plate-Warning; (Read Operation Manual) | 1 |
| 16***17 | Film; (Engine Starting) | 1 |
| 1G***77 | Tack-Fastener | 4 |
195-7585 Film Gp
| 16***99 | Plate-Warning; (Read Operation Manual) | 1 |
| 19***85 | Film Group | 1 |
| 1G***77 | Tack-Fastener | 4 |
216-8853 Film Gp
| 16***74 | Plate-Warning; (Read Operation Manual) | 1 |
| 1G***77 | Tack-Fastener | 4 |
| 21***29 | Film-Notice; (Engine Starting) | 1 |
195-7532 Plate & Film Gp
| 12***70 | Film-Instruction; (Sight Gauge) | 1 |
| 13***58 | Film; (Identification) (On Radiator Filler Cap) (On Near Of Radiator Filler Cap) | 1 |
| 15***33 | Film-Identification; (12-Volt) | 1 |
Steering System
195-7559 Control Gp-Steering
| 14***54 | Elbow; (45) (-8/-8 Orb/Orfs) | 1 |
| 14***63 | Elbow Group | 1 |
| 14***74 | Elbow As | 2 |
218-3179 Cylinder & Mtg Gp-Steering
| 03***69 | Bearing | 2 |
| 10***40 | Spacer; (10.74x17.14x7-mm Thk) | 4 |
| 10***84 | Pin As | 4 |
153-7369 Knob Gp-Steering
| 15***69 | Knob Group-Steering | 1 |
| 5C***61 | Nut (M8x1.25 Thd); (M8x1.25 Thd) | 1 |
| 8T***24 | Washer-To Assemble Valve As And Plates | 1 |
208-9691 Lines Gp-Steering
| 10***05 | Plate | 2 |
| 10***06 | Plate As | 1 |
| 10***12 | Hose As | 1 |
195-7562 Lines Gp-Steering
| 10***88 | Bar | 1 |
| 10***05 | Plate | 2 |
| 12***48 | Hose As | 1 |
208-9784 Pump & Mtg Gp-Steering
| 14***23 | Connector As. | 1 |
| 14***53 | Elbow, 45,-6 Orb To-6 Orfs-Drum Clutch Port | 1 |
| 14***81 | Elbow Group | 1 |
153-9580 Steering Wheel Gp
| 14***91 | Steering Wheel As | 1 |
| 15***68 | Plug | 1 |
| 15***80 | Steering Wheel Group | 1 |
Vibratory System
196-4201 Housing Gp-Eccentric Weight
| 08***47 | Key-Woodruff | 1 |
| 12***70 | Shaft Group-Drive | 1 |
| 16***63 | Weight Group-Eccentric | 1 |
196-4200 Housing Gp-Eccentric Weight
| 08***47 | Key-Woodruff | 1 |
| 12***70 | Shaft Group-Drive | 1 |
| 16***63 | Weight Group-Eccentric | 1 |
195-7543 Hydraulic Ar-Vibratory
| 19***43 | Hydraulic Ar-Vibratory | 1 |
| 19***44 | Valve & Mtg Group-Vibratory | 1 |
| 19***45 | Pump & Mtg Group-Vibratory | 1 |
209-0498 Lines Gp-Vibratory
| 10***41 | Clamp | 2 |
| 10***91 | Hose As | 1 |
| 10***92 | Hose As | 1 |
196-5397 Motor & Mtg Gp-Vibratory
| 11***33 | Washer; (11x50x6-mm Thk) | 1 |
| 11***16 | Coupling | 1 |
| 14***47 | Elbow; (-12 Orb/Orfs) | 1 |
196-2245 Pump & Mtg Gp-Vibratory
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 14***25 | Connector As. | 1 |
| 14***51 | Elbow Group | 1 |
196-4107 Support Gp-Vibratory
| 18***22 | Bearing As; (Drum) | 1 |
| 19***07 | Support Group-Vibratory | 1 |
| 20***17 | Shim; (12-mm Thk) | 2 |
195-7544 Valve & Mtg Gp-Vibratory
| 14***13 | Adapter Group | 1 |
| 14***16 | Connector Group | 1 |
| 14***27 | Connector Group | 1 |
196-1987 Valve Gp-Vibratory
| 08***89 | Valve; (Charge Relief) | 1 |
| 08***35 | Kit-Seal | 1 |
| 11***52 | Valve-Pressure | 1 |
195-7577 Weight Gp-Eccentric
| 19***77 | Weight Group-Eccentric | 1 |
| 19***00 | Housing Group-Eccentric Weight | 1 |
| 19***01 | Housing Group-Eccentric Weight | 1 |
164-3163 Weight Gp-Eccentric
| 08***92 | Pin | 2 |
| 08***64 | Seal-O-Ring | 2 |
| 08***85 | Bushing | 1 |
Water System
195-7580 Bar Gp-Spray
| 08***65 | Seal | 9 |
| 11***47 | Pipe As | 1 |
| 14***38 | Strainer; (Water Spray Nozzle) | 9 |
141-2140 Filter Gp-Water
| 01***24 | Bushing To Supply Port | 2 |
| 14***40 | Filter Group-Water | 1 |
| 16***11 | Filter Group-Water | 1 |
161-8211 Filter Gp-Water
| 14***46 | Filter-Water | 1 |
| 16***11 | Filter Group-Water | 1 |
| 2K***99 | Seal-Interface Between Inlet Manifold | 2 |
229-1577 Lines Gp-Water Spray
| 00***43 | Elbow 5wd342 - Up Including 5wd329 - 335, 5wd337 - 340 | 2 |
| 00***70 | Tee-Pipe | 1 |
| 00***83 | Nipple-Pipe; (Hexagon) | 4 |
229-1578 Lines Gp-Water Spray
| 00***43 | Elbow 5wd342 - Up Including 5wd329 - 335, 5wd337 - 340 | 2 |
| 00***70 | Tee-Pipe | 1 |
| 00***83 | Nipple-Pipe; (Hexagon) | 4 |
120-0230 Lines Gp-Water Spray
| 00***70 | Tee-Pipe | 1 |
| 12***30 | Lines Group-Water Spray | 1 |
| 12***74 | Clip-Loop; (12.7mm Id) | 1 |
120-0137 Mat & Mtg Gp-Water
| 09***92 | Locknut; (M6x1-Thd) | 24 |
| 10***42 | Mat-Water | 4 |
| 11***22 | Plate | 2 |
127-4730 Mat & Mtg Gp-Water
| 09***92 | Locknut; (M6x1-Thd) | 24 |
| 11***22 | Plate | 2 |
| 12***05 | Support | 12 |
123-0134 Nozzle Gp-Water
| 12***26 | Nozzle | 18 |
| 12***34 | Nozzle Group-Water | 1 |
276-3408 Nozzle Gp-Water
| 08***48 | Nozzle | 14 |
| 12***26 | Nozzle | 4 |
| 27***08 | Nozzle Group-Water | 1 |
195-7581 Pump Gp-Water Spray
| 10***05 | Plate | 1 |
| 12***04 | Clamp-Half | 2 |
| 19***81 | Pump Group-Water Spray | 1 |
199-4393 Pump Gp-Water Spray
| 19***93 | Pump Group-Water Spray | 1 |
195-7578 Spray Ar-Water
| 12***25 | Tank Group-Water | 2 |
| 12***30 | Lines Group-Water Spray | 1 |
| 14***40 | Filter Group-Water | 2 |
141-5792 Tank Gp-Water
| 11***33 | Fitting | 1 |
| 13***75 | Tank As-Water | 1 |
| 14***92 | Tank Group-Water | 1 |
120-0125 Tank Gp-Water
| 08***67 | Screw | 4 |
| 08***49 | Gasket | 1 |
| 09***92 | Locknut; (M6x1-Thd) | 2 |
CB-634D serial number reference
On the CB-634D the PIN plate is a riveted metal tag on the machine frame, on tandem-frame compactors normally near the front articulation joint / steering console, visible from the operator platform. Read the first three characters as the PIN prefix (identifies the model and build series), followed by the sequential unit number. Do not confuse this frame PIN with the separate engine dataplate serial number riveted to the 3116T engine block, which uses its own unrelated prefix.
| Prefix | Identifies | Notes |
|---|---|---|
| CDF | CB-634D double-drum vibratory asphalt compactor, powered by the Cat 3116T turbocharged diesel engine | Only machine PIN prefix documented for this model (build range CDF1/CDF00001 and up). Model line dates to the early-to-mid 2000s. No second or later prefix, and no XW-style width-variant prefix, found tied to this model; if your plate does not start CDF, confirm with dealer. |
Frequently asked questions
What engine does the Caterpillar CB-634D use?
The CB-634D runs a Cat 3116T turbocharged diesel, rated at roughly 108 kW (145 hp) gross and 103 kW (138 hp) net, powering both the propel and vibratory hydraulic systems.
What is the operating weight of the CB-634D?
Operating weight runs about 12,200-12,800 kg (26,900-28,200 lb). The exact figure varies by configuration, since ROPS, water tank, and ballast all shift it within that range.
What replaced the Caterpillar CB-634D?
The CB-634D was succeeded by the CB64 platform, introduced around 2009, which moved to a Cat C4.4 engine. The CB-634D itself followed the CB-634C of the 1990s in Cat's tandem compactor lineup.
What CB-634D owners discuss
What engine is actually in the CB-634D, and does it have a reputation for trouble?
The D-series CB-634D runs the Cat 3116T, a turbocharged inline-six diesel rated around 108 kW / 145 hp gross (103 kW / 138 hp net). It's a durable block, but high-hour units commonly show two age-related quirks: injector tip/cup o-rings hardening and leaking combustion gas past the injector, which gets misread as a blown head gasket or ring blowby, and oil cooler o-ring seepage since the cooler is sealed on only two rings. Turbo failure on these engines is almost always tied to oil starvation or heat soak rather than a design flaw, so oil change intervals and cool-down idling before shutdown matter more than on later common-rail engines. None of this is unique to the compactor application, it's the same pattern owners report across every 3116T-powered machine.
Is the vibratory system reliable, and what wears out first?
The drum vibratory system on this class of tandem roller runs a fixed frequency near 44 Hz with a multi-position amplitude selector. The eccentric weight bearings inside each drum are gear-oil lubricated through a sight glass, and the recurring complaint across double-drum machines like this one is owners skipping that check because it's easy to forget versus engine oil. Low or contaminated drum oil is the leading cause of premature bearing failure. The other classic wear item is the rubber drum isolator mounts that separate the vibrating drum from the frame — once they crack or shear, vibration transmits straight into the frame, operator station, and wiring harness, accelerating unrelated electrical faults and operator fatigue.
What do owners say about the water spray system?
Standard complaint on this type of asphalt compactor: spray nozzles clog with mineral deposits or dried asphalt film faster than the pump itself ever fails outright. Routine nozzle cleaning and a clean inlet strainer solve the majority of no-spray or weak-spray complaints; a genuinely dead pump or float switch is the less common cause. In freezing climates, owners flag that the spray tank and lines need to be drained or treated before storage, since a cracked tank or split line from freeze damage is a frequent and avoidable repair.
Any patterns with hydraulics or propel behavior?
The hydraulic system on this machine is a modest-capacity circuit (roughly 60 L / 15.9 gal reservoir), so fluid condition and filter service matter more than on larger loaders or excavators — a clogged filter or cold, thick fluid shows up as sluggish creep speed or hesitant propel response before anything mechanical is actually wrong. Beyond that, hydrostatic drive motor wear and minor propel drift on grade are the typical age-related complaints reported for this roller class generally, not anything reported as unique to the D-series.
What electrical or sensor issues come up most?
The most consistent gripe for vibratory rollers as a category is wiring harness chafe and connector corrosion caused by the constant drum vibration working connectors loose over years of service — this shows up as intermittent grounds, flickering gauges, or an amplitude selector that stops responding. Safety interlocks (seat switch, neutral start, park brake circuit) are also vibration-sensitive and can false-trip or fail to engage as connectors degrade. Because these interlocks are safety-relevant, have your dealer verify proper interlock function and wiring integrity rather than just clearing the fault and moving on.
What causes the drum edges and articulation joint to wear out?
Drum shell pitting and scarring on the smooth steel drums is normal high-hour wear and mainly affects finish quality, not structural integrity. The costlier wear point reported across this roller type is the articulation joint — pin and bushing wear there shows up as noticeable front-to-back play or looseness when the machine is worked hard on grade, and left unaddressed it turns into a major frame repair. Scraper bars also wear and need periodic adjustment to keep the drums clean; a rattling or scraping drum is usually just an adjustment, not a failure.
What should I check before buying a used CB-634D?
Pull service records and confirm the 3116T's turbo, injectors, and oil cooler o-rings have had attention if the machine is high-hour — these are the known wear items, not deal-breakers on their own. Run the vibratory system through every amplitude setting on both drums and listen for bearing noise; check the drum oil sight glass level and color. Flex the articulation joint for play and inspect the isolator mounts for cracking or collapse. Test the water spray system for even coverage from all nozzles. Check for hydraulic weeping at hose fittings and cylinder seals, and confirm the hour meter reading is consistent with overall wear. Because articulation integrity, ROPS/canopy condition, and safety interlocks are all safety-critical on a machine this size, have your dealer verify these before you put it back to work.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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