Caterpillar CS-433B
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar CS-433B is a self-propelled, single-drum vibratory soil compactor in the roughly 6 to 7 tonne operating class, built for subgrade, embankment, and utility-trench compaction work. It pairs a 1,680 mm (66 in) smooth steel drum up front with an articulated frame and a rubber-tired rear axle, steered through the articulation hitch rather than the drum. Built roughly from the late 1980s into the mid-1990s under serial prefixes 1MG and then 4FK, the B-series runs a Perkins T4.236 naturally aspirated four-cylinder diesel rated around 76 kW (102 hp) gross, driving a hydrostatic system that shares one hydraulic circuit across propel, steering, and vibration. Operating weight runs roughly 6,400 to 6,700 kg (14,200 to 14,700 lb) depending on canopy and ballast, with a 254 L fuel tank and a 132 L hydraulic reservoir. Caterpillar built the same chassis as the smooth-drum CS-433B, the padfoot CP-433B, and the lighter CS-431B, all covered by one factory service manual, with a ROPS canopy as standard operator protection. The B-series followed the original CS-433 and was itself succeeded by the CS-433C in the mid-to-late 1990s and later the turbocharged CS-433E/CP-433E generation.
Across generations the core layout changed little: single vibratory drum, articulated steering, hydrostatic drive. What moved forward was the powertrain and emissions compliance. The B-series' naturally aspirated, all-mechanical Perkins 4.236 gave way to Caterpillar's own turbocharged 3054C in the E-series, adding altitude-compensating boost, adjustment-free direct injection, and Stage II emissions certification at a similar power rating rather than a large output jump. Because the CS-433B predates any onboard electronics, it carries none of the sensor or scan-tool dependency that complicates diagnostics on later compactors; it is tested and adjusted with gauges and factory pressure specifications alone. That mechanical simplicity keeps it in demand today as an affordable, easy-to-diagnose entry point for smaller compaction contractors and rental fleets. The shared CS-431B/CS-433B/CP-433B service platform also means parts and technique cross over between all three models, which matters for anyone sourcing this machine or its components secondhand.
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 CS-433B specifications
Engine
| Engine model | Perkins T4.236 (4.236), naturally aspirated 4-cylinder diesel |
| Displacement | 3.9 L (236 cu in) |
| Gross power | 76.1 kW (102 hp) |
| Net power | Not published in available spec listings |
| Emissions tier | Not published for this generation; predates the formal emissions-tier labeling used on later compactor generations |
Weights
| Operating weight (smooth-drum, ROPS) | 6,448 kg (14,215 lb) |
| Shipping weight | Not separately published; the operating weight figure is the only weight carried across spec listings |
Dimensions
| Transport length | 4,864 mm (15.96 ft / 191.5 in) |
| Transport width | 1,905 mm (6.25 ft / 75 in) |
| Height to top of ROPS/cab | 3,050 mm (10.01 ft); some equipment-spec listings show transport height up to roughly 3.7 m depending on ROPS/canopy configuration |
| Drum width | 1,680 mm (66.2 in) |
| Drum diameter | 1,220 mm (48.1 in) |
| Rear tire size | 14.9x24 |
| Wheelbase / ground clearance | Not published in available spec listings |
Performance
| Max travel speed | 13.3 km/h (8.3 mph) |
| Vibration frequency | 30 Hz |
| Centrifugal force, high amplitude | 110.1 kN (24,746 lbf) |
| Centrifugal force, low amplitude | 86 kN (19,333 lbf) |
| Gradeability | Not published in available spec listings |
Service capacities (summary)
| Fuel tank | 254 L (67.1 US gal) |
| Hydraulic system | 132 L (34.9 US gal) |
| Engine oil | 15.1 L (4.0 US gal) |
| Cooling system | Not published in available spec listings |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
CS-433B fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase, with filter | 15.1 L (4.0 US gal) | Cat DEO (Diesel Engine Oil). Grade selection follows the standard Cat viscosity-by-ambient-temperature chart for the naturally aspirated Perkins-built diesel fitted to this machine: SAE 10W-30 covers the broadest range (roughly -18°C to 40°C / 0°F to 104°F); SAE 15W-40 for warmer climates; a lighter multigrade for sustained sub-zero cold-starts. Confirm against the climate chart printed in the O&M manual before topping off. |
| Cooling system | Not documented in sources reviewed for this exact serial range — verify capacity with your dealer or the printed O&M manual. | Premixed permanent-type antifreeze/coolant with clean, low-mineral water; factory fill protects to about -28°C (-20°F). Given the machine's build era, this is conventional Cat diesel engine antifreeze/coolant (DEAC-type) topped up with the recommended supplemental coolant additive on schedule, rather than long-life OAT coolant. |
| Fuel tank | 254 L (67.1 US gal) | No. 2-D diesel fuel meeting current Cat fuel specifications; use a winterized blend or fuel conditioner in cold climates to prevent waxing. |
| Hydraulic system (reservoir and circuit, supplies propel, steering, and vibratory drive) | 132 L (34.9 US gal) | Caterpillar Hydraulic Oil (Cat HYDO), viscosity grade selected from the machine's ambient-temperature chart. This single reservoir also feeds the hydrostatic propel drive, so oil condition and level matter for both travel and vibration performance. |
| Grease points (drum bearing and pivot lubrication) | Not a refill capacity — service by grease gun to purge old grease at each fitting. | Cat Multipurpose Grease (or an equivalent NLGI 2 lithium-complex grease); apply on the manual's short lubrication interval. Vibratory-drum bearings themselves run in a sealed oil bath and are not part of this grease schedule. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar CS-433B maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the CS-433B beyond the schedule
Predictive Maintenance & Fluid Analysis
With no ECM or onboard diagnostics, condition monitoring relies on scheduled fluid sampling and gauge checks. Pull engine oil samples from the Perkins 4.236 to catch mechanical pump and injector wear early. One hydrostatic circuit drives propel, steering, and vibration, so hydraulic oil contamination shows up across all three at once; sample that reservoir on schedule. Watch the vibratory bearing reservoir level between checks - a rising level often means a failing eccentric shaft seal. Track coolant conditioner concentration with test strips to protect the extended drain interval.
Corrective & Common Repairs
Typical CS-433B repairs track age and hours, not electronics. Vibratory dampener mounts and drum isolators harden and crack over time, transmitting vibration into the frame; replace them as a set, not one at a time. Hydrostatic pump and motor wear shows up as sluggish propel or drum creep on grade - a flow and pressure test with a gauge kit isolates pump from motor. Drum-end bearing seals weep after years of vibration loading. On the Perkins 4.236, governor linkage wear and injector timing drift explain rough idle or power loss.
Overhaul & Rebuild Points
Machines pushing toward 4,000-5,000 hours are candidates for a drum-end rebuild: eccentric weight shaft bearings, seals, and dampener mounts wear as a set, best addressed together rather than piecemeal. The hydrostatic pump and drive motor are the next overhaul point once flow tests show output below factory spec. On the engine side, the Perkins 4.236's mechanical injection pump and injectors respond to bench testing and reconditioning rather than outright replacement. Rear axle final drive and oscillation bearings are the last overhaul item on higher-hour machines still in full duty cycles.
Seasonal & Environment Servicing
Cold-weather starts on the mechanically injected Perkins 4.236 depend on a working ether-assist system and correct block heater use; check the injection pump cold-start advance before winter work. Match hydraulic oil viscosity to ambient temperature since the same fluid drives propel, steering, and vibration, and thick cold oil slows all three at once. In hot, dusty compaction environments, clean the radiator and oil cooler fins more often than the standard interval and drain the fuel/water separator more frequently, since jobsite dust and condensation both concentrate around the drum end.
CS-433B fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Charging system warning lamp (battery symbol) | Alternator output low or absent; battery not being charged | Slipping or broken fan/alternator belt, corroded battery or wiring connections, failed alternator or regulator | Check belt tension and condition, inspect battery terminals and cabling, test alternator output before returning machine to service |
| Engine oil pressure warning lamp | Engine oil pressure has dropped below the safe minimum | Low oil level, clogged oil filter, worn oil pump, failed oil pressure switch | Shut engine down immediately, check oil level and look for leaks, verify actual pressure with a gauge and test the pressure switch before restarting |
| Engine coolant temperature warning lamp/gauge | Coolant temperature has risen above normal operating range | Low coolant level, blocked radiator core, slipping or broken belt, stuck thermostat, faulty temperature sender | Stop and let the engine cool, check coolant level and radiator fins for debris, inspect belt and thermostat, confirm sender reading before resuming work |
| Air cleaner restriction indicator | Intake air filter has reached its service restriction limit | Dirty or clogged primary air filter element, damaged intake ducting causing a false reading | Inspect and clean or replace the filter element, reset the indicator, and check intake hoses and clamps for leaks |
| Secondary/parking brake pressure switch warning lamp | Hydraulic release pressure for the secondary/parking brake circuit is below the switch setpoint, so the brake stays applied or the lamp flags a fault | Low hydraulic charge pressure, low hydraulic fluid, faulty pressure switch, or a brake release solenoid valve problem | Check charge pressure at the designated test port against the testing-and-adjusting spec, verify the pressure switch continuity/resistance, and replace the switch only if measured pressure is correct but the lamp still indicates a fault |
| Propel/vibratory speed sensor signal loss | Magnetic pickup sensor for the propel or vibratory drive is not producing the expected AC signal, so ground speed or vibration output is missing or erratic | Sensor air gap out of adjustment, debris on the sensor tip, damaged wiring or connector, failed magnetic sensor | Disconnect the sensor and check AC output with a voltmeter on its lowest AC range while the system is driven, then adjust the gap or replace the sensor if no signal is present |
| Hydraulic oil filter restriction indicator | Return or case-drain hydraulic filter has reached its bypass/restriction limit | Clogged filter element, cold high-viscosity oil at startup giving a false trigger, or internal hydraulic wear generating excess debris | Let the machine reach normal operating temperature before judging the indicator, replace the filter element, and investigate further if the indicator trips again quickly after service |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
CS-433B attachments & work tools
Drum designation (CS vs CP)
The CS prefix marks the factory smooth-drum configuration and CP the factory padfoot-drum configuration on the same chassis and engine platform. Cat documents this model together with the smaller CS-431B in one factory service manual, confirming the pair shares running gear and optional-equipment fitment.
Padfoot shell kit (drum conversion)
Bolt-on curved shell segments convert the smooth steel drum to a padfoot (sheepsfoot) drum for cohesive or clay soils, sized to the roughly 1.67 m (66 in) drum width used across this compactor's drum class. Both Cat-pattern and aftermarket shell kits are sold against the CS/CP-433 drum family; confirm exact bolt pattern and pad style against the specific machine's drum before fitting.
Leveling / strike-off blade
A hydraulically raised and lowered blade mounts at the front of the machine as a factory option, used to push and strike off high spots ahead of the drum during site work. Machines fitted with this blade get a modified propel-lever with dedicated blade-up, blade-down, and float controls, meaning the blade option changes the operator control layout, not just the front end.
Coupler / mounting system
Work-tool changes on this drum-roller platform are bolt-on rather than quick-coupler: padfoot shells clamp around the existing drum shell with mounting hardware, and the leveling blade mounts to the front frame with its own hydraulic cylinder. There is no skid-steer-style quick-attach interface on this machine class.
Operator protection / cab
Factory station options are an open ROPS/FOPS canopy with perimeter handrails and footrests, or an enclosed ROPS/FOPS cab with available air conditioning and large-glass visibility. The choice affects only the operator station; drum, blade, and propulsion hardware are unchanged either way.
Vibratory system modes
The drum vibratory system runs in high- and low-amplitude modes selectable from the operator station, letting one drum suit different lift thicknesses and soil types without a hardware change. Reported frequency and centrifugal-force figures vary by source, so verify against the specific machine's data plate rather than a generic spec sheet.
Rear axle tires
Propulsion comes from a rubber-tired rear axle paired with the single steel front drum. Tire sizing commonly quoted for this compactor size class is around 14.9-24, but exact fitment should be confirmed against the machine's axle and rim spec before ordering replacements.
All CS-433B assemblies by section
Every catalogued assembly group for the Caterpillar CS-433B. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
776598 Air Cleaner Gp
| 07***98 | Air Cleaner Group | 1 |
7r4430 Kit-Exhaust
| 06***10 | Clamp-Tubing | 1 |
| 08***80 | Muffler; S/N 1mg27-Up | 1 |
| 08***81 | Tube; S/N 1mg27-Up | 1 |
7w2565 Manifold Gp-Exhaust
| 7W***65 | Manifold Group-Exhaust | 1 |
7w2585 Manifold Gp-Inlet
| 7W***85 | Manifold Group-Inlet | 1 |
9y3096 Manifold Gp-Inlet
| 9Y***96 | Manifold Group-Inlet | 1 |
7r7439 Muffler Gp
| 7R***39 | Muffler Group | 1 |
7r8055 Muffler Gp
| 7R***55 | Muffler Group | 1 |
7w2584 Turbocharger Gp
| 7W***84 | Turbocharger Group | 1 |
7w2573 Turbocharger Gp
| 7W***73 | Turbocharger Group | 1 |
Basic Engine
9y5861 Camshaft Gp
| 9Y***61 | Camshaft Group | 1 |
7c3102 Camshaft Gp
| 7C***02 | Camshaft Group | 1 |
7w6206 Cover Gp-Valve Mechanism
| 7W***06 | Cover Group-Valve Mechanism | 1 |
7c8213 Crankshaft Gp
| 7C***13 | Crankshaft Group | 1 |
7c9259 Cylinder Block As-Part 1 Of 2
| 7C***59 | Cylinder Block As | 1 |
7c9259 Cylinder Block As-Part 2 Of 2
| 7C***59 | Cylinder Block As | 1 |
9y5858 Cylinder Block Gp
| 9Y***58 | Cylinder Block Group | 1 |
7c9258 Cylinder Block Gp
| 7C***58 | Cylinder Block Group | 1 |
9y2629 Cylinder Block Gp
| 9Y***29 | Cylinder Block Group | 1 |
7c3188 Cylinder Head Gp
| 7C***88 | Cylinder Head Group | 1 |
7c3750 Cylinder Head Gp
| 7C***50 | Cylinder Head Group | 1 |
7w2517 Cylinder Head Gp
| 7W***17 | Cylinder Head Group | 1 |
7c9257 Cylinder Head Gp
| 7C***57 | Cylinder Head Group | 1 |
7w2521 Cylinder Head Gp
| 7W***21 | Cylinder Head Group | 1 |
7c3108 Flywheel Gp
| 7C***08 | Flywheel Group | 1 |
9y5003 Gear Gp-Front
| 9Y***03 | Gear Group-Front; Gear Gp-Front Idler | 1 |
1w7878 Gear Gp-Front
| 1W***78 | Gear Group-Front; Gear Gp-Front Idler | 1 |
7c3103 Housing Gp-Flywheel
| 7C***03 | Housing Group-Flywheel | 1 |
7w1143 Housing Gp-Front
| 7W***43 | Housing Group-Front | 1 |
9y5045 Housing Gp-Front
| 9Y***45 | Housing Group-Front | 1 |
7w2537 Lifting Gp
| 7W***37 | Lifting Group-Engine; Lifting Eye Gp-Engine | 1 |
9y3094 Mounting Gp-Engine
| 9Y***94 | Mounting Group-Engine | 1 |
7c3104 Pan Gp-Oil
| 7C***04 | Pan Group-Oil; Pan Gp-Engine Oil | 1 |
7w2511 Piston & Rod Gp
| 7W***11 | Piston & Rod Group; Rod & Piston Gp | 1 |
7r7194 Power Gp-Part 1 Of 3
| 7R***94 | Power Group | 1 |
7r7194 Power Gp-Part 2 Of 3
| 7R***94 | Power Group | 1 |
7r7194 Power Gp-Part 3 Of 3
| 7R***94 | Power Group | 1 |
7c8209 Pulley Gp-Crankshaft
| 7C***09 | Pulley Group-Crankshaft | 1 |
7w2531 Valve-Mechanism Gp
| 7W***31 | Valve Mechanism Group | 1 |
Braking System
6r1506 Brake Ar
| 6R***06 | Brake Ar | 1 |
Cooling System
9y3095 Fan Gp
| 9Y***95 | Fan Group | 1 |
7c3112 Lines Gp-Water
| 7C***12 | Lines Group-Water; Lines Gp-Engine Water | 1 |
9y3097 Pump Gp-Water
| 9Y***97 | Pump Group-Water | 1 |
4w7684 Pump Gp-Water
| 4W***84 | Pump Group-Water | 1 |
Electrical System
871266 Back-Up Gp-Alarm
| 08***66 | Alarm Group-Backup | 1 |
7r7913 Electrical Gp-Part 2 Of 2
| 7R***13 | Electrical Group | 1 |
7r7913 Electrical Gp-Part 1 Of 2
| 7R***13 | Electrical Group | 1 |
7r7913 Electrical Gp-Part 2 Of 3
| 7R***13 | Electrical Group | 1 |
7r7913 Electrical Gp-Part 3 Of 3
| 7R***13 | Electrical Group | 1 |
7r7913 Electrical Gp-Part 1 Of 3
| 7R***13 | Electrical Group | 1 |
5e8032 Horn Gp
| 5E***32 | Horn Group | 1 |
8c7479 Light Gp
| 8C***79 | Lighting Group | 1 |
7c9252 Mounting Gp-Alternator
| 7C***52 | Mounting Group-Alternator | 1 |
7c9269 Mounting Gp-Starting Motor
| 7C***69 | Mounting Group-Starting Motor; Mounting Gp- Starting Motor | 1 |
780622 Motor As-Starter
| 07***22 | Starting Motor As-Electric | 1 |
7c4622 Starting Motor Gp-Electric
| 7C***22 | Starting Motor Group-Electric | 1 |
Engine Arrangement
9y3100 Engine Ar
| 1W***78 | Gear Group-Front; Gear Gp-Front Idler | 1 |
| 7C***02 | Camshaft Group | 1 |
| 7C***03 | Housing Group-Flywheel | 1 |
9y5859 Engine Ar-Primary-Part 2 Of 2
| 7C***99 | Pump Group-Fuel | 1 |
| 7C***04 | Pan Group-Oil; Pan Gp-Engine Oil | 1 |
| 7C***06 | Pump Group-Engine Oil | 1 |
9y5859 Engine Ar-Primary-Part 1 Of 2
| 4P***36 | Gauge Group-Oil Level (Dipstick) | 1 |
| 7C***03 | Housing Group-Flywheel | 1 |
| 7C***05 | Gauge Group-Oil Level (Dipstick) | 1 |
Frame And Body
871198 Cab Gp
| 08***98 | Cab Group | 1 |
871408 Cab Gp-Part 1 Of 2
| 08***08 | Cab Group | 1 |
871408 Cab Gp-Part 2 Of 2
| 08***08 | Cab Group | 1 |
7r9090 Door Gp-Lh
| 7R***90 | Door Group-Lh | 1 |
7r9089 Door Gp-Rh
| 7R***89 | Door Group-Rh | 1 |
0868886 Fan Gp
| 08***86 | Fan Group | 1 |
871199 Frame Gp-Compactor-Part 2 Of 2
| 08***99 | Frame Group-Compactor | 1 |
871199 Frame Gp-Compactor-Part 3 Of 3
| 08***99 | Frame Group-Compactor | 1 |
6r0738 Frame Gp-Compactor-Part 1 Of 2
| 6R***38 | Frame Group-Compactor | 1 |
871199 Frame Gp-Compactor-Part 1 Of 2
| 08***99 | Frame Group-Compactor | 1 |
6r0738 Frame Gp-Compactor-Part 2 Of 3
| 6R***38 | Frame Group-Compactor | 1 |
6r0738 Frame Gp-Compactor-Part 2 Of 2
| 6R***38 | Frame Group-Compactor | 1 |
6r0738 Frame Gp-Compactor-Part 1 Of 3
| 6R***38 | Frame Group-Compactor | 1 |
871199 Frame Gp-Compactor-Part 1 Of 3
| 08***99 | Frame Group-Compactor | 1 |
871199 Frame Gp-Comactor-Part 2 Of 3
| 08***99 | Frame Group-Compactor | 1 |
6r0738 Frame Gp-Compactor-Part 3 Of 3
| 6R***38 | Frame Group-Compactor | 1 |
7r8053 Grill Gp-Sound Suppression
| 7R***53 | Grill Group-Sound Suppression | 1 |
7r8051 Guard Gp-Oil Pan
| 7R***51 | Guard Group-Oil Pan | 1 |
7r9099 Panel Gp-Lh
| 7R***99 | Panel Group-Sound Suppression | 1 |
7r8120 Plate Gp-Sound Suppression
| 7R***20 | Plate Group-Sound Suppression | 1 |
871269 Rops Gp
| 08***69 | Rops Group | 1 |
7r8222 Sheet Metal Gp-Part 2 Of 2
| 7R***22 | Sheet Metal Group | 1 |
5e9285 Sheet Metal Gp-Part 1 Of 2
| 5E***85 | Sheet Metal Group | 1 |
7r8222 Sheet Metal Gp
| 7R***22 | Sheet Metal Group | 1 |
5e9285 Sheet Metal Gp-Part 2 Of 2
| 5E***85 | Sheet Metal Group | 1 |
7r8222 Sheet Metal Gp-Part 1 Of 2
| 7R***22 | Sheet Metal Group | 1 |
0869422 Step Gp
| 08***22 | Step Group | 1 |
7r7981 Suppression Ar-Sound
| 7R***81 | Suppression Ar-Sound | 1 |
Fuel System
7c3115 Filter Gp-Fuel
| 7C***15 | Filter Group-Fuel | 1 |
9y3316 Lines Gp-Fuel Filter
| 9Y***16 | Lines Group-Fuel Filter | 1 |
7w2588 Lines Gp-Fuel Injection
| 7W***88 | Lines Group-Fuel Injection | 1 |
7c2799 Pump Gp-Fuel
| 7C***99 | Pump Group-Fuel | 1 |
7n6422 Pump Gp-Fuel
| 7N***22 | Pump Group-Fuel | 1 |
7c3139 Pump Gp-Fuel Injection
| 7C***39 | Pump Group-Fuel Injection | 1 |
7c3107 Pump Gp-Fuel Injection
| 7C***07 | Pump Group-Fuel Injection | 1 |
9n6519 Separator Gp-Water
| 9N***19 | Separator Group-Water | 1 |
7c8029 Separator Gp-Water
| 7C***29 | Separator Group-Water | 1 |
Hydraulic System
6r0731 Blade Gp-Part 1 Of 2
| 6R***31 | Blade Group | 1 |
6r0731 Blade Gp-Part 2 Of 2
| 6R***31 | Blade Group | 1 |
6r0727 Control Gp-Part 1 Of 3
| 6R***27 | Control Group | 1 |
6r0727 Control Gp-Part 3 Of 3
| 6R***27 | Control Group | 1 |
6r0727 Control Gp-Part 2 Of 3
| 6R***27 | Control Group | 1 |
780614 Cylinder Gp (Chg 00a)
| 07***14 | Cylinder Group | 1 |
1g7726 Cylinder Gp-Hydraulic
| 1G***26 | Cylinder Group-Hydraulic | 1 |
1219564 Cylinder Gp-Hydraulic
| 12***64 | Cylinder Group-Hydraulic | 1 |
6r0733 Filter Gp-Hydraulic Oil
| 6R***33 | Filter Group | 1 |
777187 Valve Gp-Hydraulic Control
| 07***87 | Valve Group-Control | 1 |
Lubrication System
7c9264 Cooler & Filter Gp
| 7C***64 | Cooler & Filter Group-Engine Oil | 1 |
7c9264 Cooler & Filter Gp-Engine Oil
| 7C***64 | Cooler & Filter Group-Engine Oil | 1 |
7w6220 Filler Gp-Oil
| 7W***20 | Filler Group-Oil; Filler Gp-Engine Oil | 1 |
7c3110 Fumes Disposal Gp
| 7C***10 | Fumes Disposal Group | 1 |
7c3105 Gauge Gp-Oil Level (Dipstick)
| 7C***05 | Gauge Group-Oil Level (Dipstick) | 1 |
4p3836 Gauge Gp-Oil Level (Dipstick)
| 4P***36 | Gauge Group-Oil Level (Dipstick) | 1 |
| 4P***37 | Tube As-Oil Level | 1 |
| 4P***38 | Gauge As-Oil Level (Dipstick); (Engine) | 1 |
7c3106 Pump Gp-Engine Oil
| 7C***06 | Pump Group-Engine Oil | 1 |
Operator Station
7r8369 Panel As-Instrument
| 7R***69 | Panel Group-Instrument | 1 |
7r8369 Panel Gp-Instrument
| 7R***69 | Panel Group-Instrument | 1 |
8y4032 Seat Belt Gp
| 8Y***32 | Seat Belt Group | 1 |
9g7641 Switch Gp-Start
| 9G***41 | Switch Group-Start; -Engine, Key-Vims Service | 1 |
Power Train
7x5281 Axle As-Part 2 Of 3
| 7X***81 | Axle Group | 1 |
7x5281 Axle As-Part 3 Of 3
| 7X***81 | Axle Group | 1 |
7x5281 Axle As-Part 1 Of 3
| 7X***81 | Axle Group | 1 |
6r0725 Drive Train Gp
| 6R***25 | Drive Train Group | 1 |
780591 Drive-Pump
| 07***91 | Drive-Pump | 1 |
8c9287 Drum Ar-Padded
| 07***32 | Tip | 16 |
| 07***33 | Pin-Flexible | 16 |
| 1D***38 | B. 1" N.C. X 3 1/2" | 6 |
8c9288 Drum Ar-Smooth
| 07***76 | Blade, Rubber Scraper | 2 |
| 1D***38 | B. 1" N.C. X 3 1/2" | 8 |
| 2H***91 | Nut | 8 |
871201 Drum As-Padded-Part 2 Of 2
| 08***01 | Drum As | 1 |
871201 Drum As-Part 1 Of 2
| 08***01 | Drum As | 1 |
871201 Drum As-Padded-Part 1 Of 2
| 08***01 | Drum As | 1 |
871201 Drum As-Part 2 Of 2
| 08***01 | Drum As | 1 |
1g7141 Drum As-Pad-Part 2 Of 2
| 1G***41 | Drum As-Padded | 1 |
7r6919 Drum As-Smooth-Part 2 Of 2
| 7R***19 | Drum As-Padded | 1 |
1g7141 Drum As-Pad-Part 1 Of 2
| 1G***41 | Drum As-Padded | 1 |
7r6919 Drum As-Smooth-Part 1 Of 2
| 7R***19 | Drum As-Padded | 1 |
871200 Drum As-Smooth-Part 1 Of 2
| 08***00 | Drum Group | 1 |
871200 Drum As-Smooth-Part 2 Of 2
| 08***00 | Drum Group | 1 |
871200 Drum Gp-Part 2 Of 2
| 08***00 | Drum Group | 1 |
871200 Drum Gp-Part 1 Of 2
| 08***00 | Drum Group | 1 |
0869216 Filter Gp
| 08***16 | Filter Group-Hydraulic; -Hydraulic | 1 |
7x5283 Gearbox Housing & Bearing As
| 7X***83 | Gearbox | 1 |
1g9442 Gearbox Gp
| 1G***42 | Gearbox Group | 1 |
780623 Motor As-Hydraulic
| 07***23 | Motor As-Hydraulic | 1 |
7r4493 Motor As-Hydraulic-Part 1 Of 2
| 7R***93 | Motor As-Hydraulic | 1 |
7r4493 Motor As-Hydraulic-Part 2 Of 2
| 7R***93 | Motor As-Hydraulic | 1 |
1123435 Motor Gp-Part 2 Of 2
| 11***35 | Motor Group | 1 |
1123435 Motor Gp-Part 1 Of 2
| 11***35 | Motor Group | 1 |
780590 Motor Gp*R
| 07***90 | Motor Group | 1 |
6r0724 Propel Gp-Part 1 Of 4
| 6R***24 | Propel Group | 1 |
6r0724 Propel Gp-Part 2 Of 4
| 6R***24 | Propel Group | 1 |
6r0724 Propel Gp-Part 2 Of 2
| 6R***24 | Propel Group | 1 |
6r0724 Propel Gp-Part 3 Of 4
| 6R***24 | Propel Group | 1 |
6r0724 Propel Gp-Part 4 Of 4
| 6R***24 | Propel Group | 1 |
6r0724 Propel Gp-Part 1 Of 2
| 6R***24 | Propel Group | 1 |
780588 Pump Gp-Tandem-Part 1 Of 2*R
| 07***88 | Pump Group | 1 |
780588 Pump Gp-Tandem-Part 2 Of 2*R
| 07***88 | Pump Group | 1 |
1g7577 Pump Gp-Tandem-Part 1 Of 2
| 1G***77 | Pump Group-Tandem | 1 |
1g7577 Pump Gp-Tandem-Part 2 Of 2
| 1G***77 | Pump Group-Tandem | 1 |
7x8557 Reducer As-Gear-Part 1 Of 2
| 7X***57 | Reducer As-Gear | 1 |
780592 Reducer As-Gear-Part 1 Of 2
| 07***92 | Reducer As-Gear | 1 |
780599 Reducer As-Gear-Part 1 Of 2
| 07***99 | Reducer As-Gear | 1 |
780599 Reducer As-Gear-Part 2 Of 2
| 07***99 | Reducer As-Gear | 1 |
7x8557 Reducer As-Gear-Part 2 Of 2
| 7X***57 | Reducer As-Gear | 1 |
780592 Reducer As-Gear-Part 2 Of 2
| 07***92 | Reducer As-Gear | 1 |
822785 Valve Gp
| 08***85 | Valve Group | 1 |
822784 Valve Gp
| 08***84 | Valve Group | 1 |
780593 Valve Gp
| 07***93 | Valve Group | 1 |
7r6615 Valve Gp-Solenoid
| 7R***15 | Valve Group-Solenoid | 1 |
6r0739 Wheel & Tire Gp
| 6R***39 | Wheel & Tire Group | 1 |
6r0728 Wheel & Tire Gp
| 6R***28 | Wheel & Tire Group | 1 |
Service Equipment And Supplies
Hardware Chart
| 7H***00 | Chart-Hardware | 1 |
O-Ring Chart
| 7R***00 | Chart-O-Ring | 1 |
1g9490 Finish Gp
| 1G***90 | Finish Group | 1 |
7r7193 Finish Gp
| 7R***93 | Finish Group | 1 |
7r7192 Finish Gp
| 7R***92 | Finish Group | 1 |
1g9492 Finish Gp
| 1G***92 | Finish Group | 1 |
6r0712 Finish Gp
| 6R***12 | Finish Group | 1 |
6r0711 Finish Gp
| 6R***11 | Finish Group | 1 |
Steering System
773197 Cylinder Gp-Hydraulic (Steering)(Chg 00)
| 07***97 | Cylinder Group-Hydraulic | 1 |
7x5311 Filter Gp-Oil
| 7X***11 | Filter Group-Oil | 1 |
773806 Pump Gp-Hydraulic (Steering)
| 07***06 | Pump Group-Hydraulic | 1 |
7r7191 Steering Gp-Part 1 Of 4
| 7R***91 | Steering Group | 1 |
7r7191 Steering Gp-Part 1 Of 2
| 7R***91 | Steering Group | 1 |
7r7191 Steering Gp-Part 2 Of 2
| 7R***91 | Steering Group | 1 |
7r7191 Steering Gp-Part 3 Of 4
| 7R***91 | Steering Group | 1 |
7r7191 Steering Gp-Part 4 Of 4
| 7R***91 | Steering Group | 1 |
7r7191 Steering Gp-Part 2 Of 4
| 7R***91 | Steering Group | 1 |
780356 Valve Gp-Steering
| 07***56 | Valve Group-Steering | 1 |
Vibratory System
780589 Pump As-Hydraulic*R
| 07***89 | Pump As-Hydraulic | 1 |
1g7579 Pump Gp-Hydraulic
| 1G***79 | Pump Group-Hydraulic | 1 |
6r0726 Vibration Gp
| 6R***26 | Vibration Group | 1 |
6r0726 Vibration Gp-Part 2 Of 2
| 6R***26 | Vibration Group | 1 |
6r0726 Vibration Gp-Part 1 Of 2
| 6R***26 | Vibration Group | 1 |
CS-433B serial number reference
The PIN/serial plate on a CS-433B is a riveted metal tag on the main frame, typically near the articulation joint or front frame area, separate from the engine's own serial tag under the hood. On this pre-2001 machine the plate shows an 8-character serial: a 3-character prefix identifying the model/production series, followed by a 5-digit sequential unit number. Read the first 3 characters as the prefix (1MG or 4FK for this model) to identify the production series and approximate build year.
| Prefix | Identifies | Notes |
|---|---|---|
| 1MG | CS-433B smooth-drum vibratory compactor (shares chassis and manual coverage with the CP-433B padfoot variant) | Earliest CS-433B/CP-433B production run. Calendar-year breakout by serial: 35-208 built 1988, 209-323 built 1989, 324-405 built 1990, 406-537 built 1991. Fitted with a Perkins 4.236 diesel (about 76 kW / 102 hp) driving a 1676 mm (66 in) smooth drum. |
| 4FK | CS-433B smooth-drum vibratory compactor (shares chassis and manual coverage with the CP-433B padfoot variant) | Follow-on run after 1MG. Documented machines in this range date to 1992-1993 (exact closing serial not found in available records). Same Perkins 4.236 diesel as the 1MG run. Production of the B-series ended by the mid-1990s when the CS-433C (different prefix) took over. |
Frequently asked questions
What engine does the Caterpillar CS-433B use?
The CS-433B runs a Perkins T4.236 (4.236), a naturally aspirated four-cylinder diesel rated at roughly 76 kW (102 hp) gross. It is a fully mechanical engine with an inline injection pump and no electronic engine controls, so it is tested and adjusted with gauges rather than a diagnostic scan tool.
What is the operating weight of the Caterpillar CS-433B?
Operating weight runs approximately 6,400 to 6,700 kg (14,200 to 14,700 lb) depending on canopy and ballast. The padfoot CP-433B sharing this chassis can run heavier, toward 6,800 kg (15,000 lb), so treat weight as configuration-dependent and check the plate for your specific machine.
What replaced the Caterpillar CS-433B?
Caterpillar moved the smooth-drum lineup to the CS-433C in the mid-to-late 1990s, then to the turbocharged CS-433E generation (Cat 3054C engine, Stage II emissions) in the 2000s. Both successors kept the same single-drum, articulated, hydrostatic layout as the B-series.
What CS-433B owners discuss
What's the most common complaint about the drive system on a CS-433B?
Why does the vibratory system quit working or run weak?
What engine quirks show up on the Perkins that powers this machine?
What steering behavior should raise concern?
What wear patterns are typical for the undercarriage and running gear on this class of machine?
What electrical or sensor problems come up on this model?
What should a buyer check on a used CS-433B before purchase?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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