Caterpillar 224B
Caterpillarexcavator

Caterpillar 224B

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar 224B is a wheel excavator designed for versatile earthmoving applications. This machine belongs to the mid-size excavator class, featuring a 100 kW (135 hp) Cat 3116 DIT engine and an operating weight of approximately 20.3 t (20.3 tonnes). Produced within the 1989–2021 timeframe, it is part of a lineage that includes predecessors like the 214B and successors in the larger excavator segments. Available configurations include various bucket capacities, such as a 1.2 m³ option, and extended wheelbase designs for improved stability.

Across its production life, the 224B transitioned through different series, notably incorporating redesigned control systems and an extended wheelbase to enhance operator maneuverability and machine stability. In today's used equipment and parts market, the 224B remains a significant asset due to its reliance on proven components like the Cat 3116 engine family. Its value is driven by high parts availability for wear items and mechanical simplicity that allows for cost-effective maintenance compared to modern, sensor-heavy electronic architectures.

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 224B specifications

Engine

Model3116 / 3116 DIT
Gross Power135 hp (100 kW)
Displacement402.8 cu in

Weights

Operating Weight20.3 t (approx. 44,750 lb) to 21.44 t

Dimensions

Transport Length9.34 m
Transport Width2.66 m (104.72 in)
Transport Height3.19 m
Wheelbase9.03 ft
Ground Clearance1.12 ft
Height to Top of Cab10.47 ft
Width - Outriggers Down12.7 ft

Performance

Max Digging Depth4.61 m (15.12 ft) to 6.43 m (21.1 ft) varies by stick configuration
Max Cutting Height6.85 m (22.47 ft) to 8.49 m (27.86 ft) varies by stick configuration
Max Loading Height4.61 m (15.12 ft) to 5.46 m (17.91 ft) varies by stick configuration
Max Reach Along Ground7.55 m (24.77 ft) to 10.75 m (35.27 ft) varies by stick configuration
Max Vertical Wall Dig Depth2.94 m (9.65 ft) to 3.84 m (12.60 ft) varies by stick configuration
Hydraulic Pump Flow Capacity87.2 gal/min
Hydraulic System Relief Valve Pressure4641.3 psi

Service capacities (summary)

Fuel Capacity87.2 gal
Hydraulic System Fluid Capacity103.1 gal

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

224B fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter)6 L to 7.1 L (1.6-1.9 US gal) - varies by series/configuration (D-series 3013 NA engine: 7.1 L / 1.9 gal; E-series 3013C engine: 6 L / 1.6 gal)Cat DEO or Cat DEO-ULS multigrade diesel engine oil (meets Cat ECF-1-a, ECF-2, or ECF-3). By climate: SAE 10W-30 for -18°C to 40°C (0°F to 104°F); SAE 15W-40 for -9.5°C to 50°C (15°F to 122°F) in warmer regions; SAE 5W-40 or 0W-40 where cold starts down to -30°C/-40°C (-22°F/-40°F) are expected. Standard oil service interval is 500 hours.
Cooling systemNot published in the factory spec sheets reviewed for this small liquid-cooled 3-cylinder roller engine - capacity varies by series/radiator configuration; confirm exact fill volume in the machine-specific OMM or with a Cat dealerCat ELC (Extended Life Coolant), 1:1 premix with water, giving freeze protection to about -37°C (-34°F); concentrate can be blended for arctic protection to -52°C (-62°F). Cat DEAC conventional antifreeze/coolant is an acceptable alternative. Minimum 30 percent glycol is required in the mix regardless of type.
Fuel tankNot documented for this exact serial range — verify with your dealerNot documented for this exact serial range — verify with your dealer
Hydraulic system total AND hydraulic tank26 L (6.9 US gal) tank capacity; 30 L (7.9 US gal) total system capacity - consistent across D and E seriesCat HYDO Advanced 10 (SAE 10W) is the preferred fluid for the hydrostatic drive and implement hydraulic circuit, best suited from -20°C to 40°C (-4°F to 104°F). Cat HYDO, Cat TDTO, Cat DEO, Cat DEO-ULS, or Cat MTO are acceptable alternates depending on ambient temperature.
Grease (spec only)Cat Advanced 3Moly Grease (NLGI 2, lithium complex with 3 percent moly) for articulation, steering cylinder pin, and pivot points under moderate-to-high load, effective roughly -20°C to 40°C (-4°F to 104°F). Cat Multipurpose Grease (NLGI 2, no moly) is an acceptable lower-load, wider-range alternative (-30°C to 40°C / -22°F to 104°F). Cat Ultra 5Moly Grease is the step-up choice for the most heavily

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

Caterpillar 224B maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level and condition
  • Inspect hydraulic fluid level via sight glass
  • Verify coolant level and cap integrity
  • Drain water from fuel water separator
  • Check air filter restriction indicator
  • Inspect all hydraulic hoses for cracks or leaks
  • Check pins, bushings, and attachment points
  • Test all controls for smooth response
Every 250 h
  • Change engine oil and filter
  • Grease boom, stick, bucket, and swing points
  • Drain fuel filter/water separator
  • Perform visual inspection of all components
  • Check air filter primary element
  • Inspect belts, hoses, and clamps
Every 500 h
  • Replace fuel filter
  • Replace hydraulic return filter
  • Perform battery service and terminal inspection
  • Conduct detailed undercarriage inspection
  • Test coolant SCA levels
  • Check engine valve lash
Every 1,000 h
  • Perform hydraulic oil sample analysis (S.O.S)
  • Change final drive oil
  • Inspect turbocharger
  • Check ROPS bolt torque
  • Measure undercarriage wear
  • Inspect front and rear drum bearing pods if applicable to configuration
Every 2,000 h
  • Change hydraulic system oil
  • Perform coolant flush and replacement
  • Conduct comprehensive structural inspection of boom and stick welds
  • Evaluate major components
  • Replace worn belts and hoses

Servicing the 224B beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize Cat S.O.S Services to monitor engine oil, hydraulic fluid, and coolant. Analyze engine oil for wear metals like iron or copper and contaminants such as silicon. Monitor hydraulic fluid for particle count (ISO cleanliness) and oxidation levels. Regular coolant analysis is critical to check pH levels and SCA concentration, preventing internal liner pitting and radiator corrosion before major failures occur.

Corrective & Common Repairs

Address hydraulic failures by inspecting return filters and checking for pump or valve contamination. If sluggish propulsion response is noted, inspect the hydrostatic drive circuit for air or debris. Monitor hydraulic hoses for abrasions or leaks that require immediate replacement. For engine issues, check the fuel water separator regularly to prevent injector damage from water contamination in the diesel fuel.

Overhaul & Rebuild Points

Plan major interventions around the 2,000-hour mark, focusing on hydraulic oil changes and coolant flushes. Conduct comprehensive structural inspections of boom and stick welds to identify fatigue. During engine overhauls, recheck cylinder head bolt torque and valve lash. Evaluate final drive and swing drive components for wear, replacing gear or bearing assemblies if significant play or noise is detected during operation.

Seasonal & Environment Servicing

In high-dust or quarry environments, check air filters daily and clean radiator fins frequently to prevent overheating. For cold-weather operations, utilize SAE 0W-40 or 5W-40 engine oil and ensure the cooling system has sufficient glycol for arctic protection. In warmer regions, use SAE 15W-40 engine oil. Always drain water from fuel separators before winter to prevent fuel waxing and filter blockage.

224B fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
110-0Engine Coolant Temperature — Above NormalLow coolant level, thermostat failureInspect cooling system, refill coolant, test thermostat
110-3Engine Coolant Temp Sensor — Voltage HighOpen circuit or sensor failureCheck wiring; replace sensor if confirmed faulty
174-3Engine Fuel Temperature — Voltage Above NormalOpen circuit in sensor wiringInspect harness and replace sensor if necessary
190-8Engine Speed — Abnormal FrequencySpeed sensor air gap, sensor failure, or tone ring damageCheck sensor gap; test speed sensor and tone ring
41-38-Volt DC Supply — Voltage Above NormalShort to power on 8V reference circuitInspect sensors sharing the 8V supply and isolate fault
41-48-Volt DC Supply — Voltage Below NormalShort to ground on 8V reference circuitDisconnect sensors one at a time to locate short
94-1Fuel Pressure — Low Fuel PressureFuel system restriction or supply issueCheck fuel filters and supply lines
100-11Oil Pressure Sensor — Very Low Oil PressureLow oil level or mechanical pump failureCheck engine oil level immediately

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

224B attachments & work tools

Buckets

Bucket capacity is 1.2 m³ (1.57 yd³). Options include various widths and configurations for different soil types.

Hydraulic hammers

Hammers are designed for hard-hitting jobs with automatic shut-off, silencing, and buffering features.

Quick couplers

Quick couplers allow one person to change work tools in seconds for maximum flexibility. Multiple configurations are available for Cat excavators.

Thumbs/grapples

Various thumb and grapple attachments are available to improve machine versatility and utility.

Rippers

Rippers/scarifiers are available as part of the attachment line for specialized earthmoving tasks.

Hydraulic-kit notes

The machine is equipped with a Cat 3116 DIT engine providing 100 kW (135 hp) of power.

All 224B assemblies by section

Every catalogued assembly group for the Caterpillar 224B. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Cooling System
8u3025 Frame Ar-Upper
8u7353 Radiator Gp
Electrical System
8u3138 Cont Gp-Stabilizer
8u3137 Cont Gp-Stabilizer
8u3132 Cont Gp-Stabilizer
8u2618 Alarm Gp-Travel-Type 2
8u2618 Alarm Gp-Travel-Type 1
8u1497 Harness Gp
8u2626 Harness Gp
8u1640 Harness Gp
8u1513 Harness Gp-Part 1 Of 2
8u2994 Harness Gp
8u2995 Harness Gp
8u1513 Harness Gp-Part 2 Of 2
5w5860 Horn Gp-Air
8u2139 Horn Gp-Warning (Addtl)
8u2140 Lighting Gp-Boom(1 Pc)(Addtl)
8u2620 Lighting Gp-Engine Compart
8u2141 Lighting Gp-Rear
8u1642 Switch Gp-Rotor
8u0932 Wiring Gp-Batt -Part 2 Of 3
8u0932 Wiring Gp-Batt -Part 1 Of 3
8u0932 Wiring Gp-Batt -Part 3 Of 3
Engine
9w3043 Alternator Gp
9W***43Alternator Group-Charging; (24-Volt, 52-Ampere)1
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7c1683 Alternator Gp
7C***83Alternator Group-Charging; Charging Alternator Group (24v, 55a)1
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1n3477 Breather Gp
2w9608 Camshaft Gp-Single
4w3462 Carrier Gp-Seal
4W***62Carrier Group-Seal; Carrier Group (Seal)1
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7c5624 Cartridge Gp-Turbocharger
7w6989 Control Gp-Fuel Injection
7W***89Control Group-Fuel Injection; Fuel Injection Control Group1
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7c5201 Control Gp-Governor
4w2913 Cooler Gp-Engine Oil
4w2108 Cover Gp-Cylinder Block
7l0004 Cover Gp-Front
7L***04Cover Group-Front; (Front Housing)1
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1n4877 Cover Gp-Inlet Manifold
9y7620 Cover Gp-Valve Mechanism
4w2197 Crankshaft Gp
4W***97Crankshaft Group; Crankshaft Group1
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2w9746 Cylinder Block Gp*R
7c5826 Cylinder Block Gp
9y6166 Cylinder Head As*R
9y8871 Cylinder Head Gp
9y8850 Cylinder Head Gp*R
4w1099 Cylinder Head Gp
4W***99Cylinder Head Group; Cylinder Head Group1
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4w0737 Cylinder Head Gp*R
7c2428 Pulley & Damper Gp
7C***28Damper & Pulley Group; Damper And Pulley Group1
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7c4532 Drain Gp-Oil Pan
7C***32Drain Group-Oil Pan; Oil Pan Drain Group1
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7c0044 Drive Gp-Fan
7C***44Drive Group-Fan; Fan Drive Group1
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7w8179 Governor & Transfer Pump Drive Gp
7W***79Drive Group-Gov & Transfer Pump1
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4p0666 Drive Gp-Governor & Transfer Pump
4P***66Drive Group-Gov & Transfer Pump1
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4w5428 Drive Gp-Water Pump
4W***28Drive Group-Water Pump; Water Pump Drive Group1
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7w4812 Fastener Gp-Governor
7W***12Fastener Group-Governor; Fastener Group(Governor) (~1c K5811)1
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7c0271 Filter Gp-Engine Oil
1n3476 Filter Gp-Fuel
7w9375 Flywheel Gp
7w8420 Fumes Disposal Gp
7W***20Fumes Disposal Group; Fumes Disposal Group1
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9y8240 Gauge Gp-Oil Level (Dipstick)
9Y***40Gauge Group-Oil Level (Dipstick); Oil Level Gauge Group(Dipstick) (~1c K4294)1
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2w8475 Gear Gp-Front
2W***75Gear Group-Front; Front Gear Group1
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7w5557 Governor Gp
7C***89Plug-Orifice1
7C***66Spring-Dashpot1
7C***89Plate-Governor Information1
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7c6951 Governor Gp
4p1581 Governor Gp-Unit Injector
7w8813 Housing Gp-Flywheel
7l0002 Housing Gp-Front
7c1685 Instrument Gp
4w2515 Lifting Eye Gp-Engine
1w6029 Lines Gp-Air
4w2914 Lines Gp-Engine Oil
7c9651 Lines Gp-Fuel Filter
7w8434 Lines Gp-Governor Oil
7W***34Lines Group-Governor Oil; Governor Oil Lines Group1
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1w6030 Lines Gp-Turbocharger Oil
7c1136 Lines Gp-Water
7w9248 Manifold Gp-Exhaust
7W***48Manifold Group-Exhaust; Exhaust Manifold Group1
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4w3480 Manifold Gp-Inlet
4W***80Manifold Group-Inlet; Inlet Manifold Group1
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4w0269 Pan Gp-Oil
9y5538 Rod & Piston Gp-6 Required
7c1684 Pulley Gp-Fan Belt
4w5429 Pulley Gp-Crankshaft
4W***29Pulley Group-Crankshaft; Crankshaft Pulley Group1
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2w8625 Pump Gp-Engine Oil*R
4w2195 Pump Gp-Engine Oil
4W***95Pump Group-Engine Oil; Engine Oil Pump Group1
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7c1500 Pump Gp-Fuel Injection
7C***00Pump Group-Fuel Injection; Fuel Injection Punp Group1
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4p0723 Pump Gp-Fuel Priming & Primary Filter
4P***23Pump Group-Fuel Prime & Prim Filter1
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4w7589 Pump Gp-Water
7c4508 Pump Gp-Water*R
7c6077 Rocker Arm Gp-Valve-6 Required
7c6077 Arm Gp-Valve Rocker-6 Required
4w1016 Seal Gp-Crankshaft
9x5524 Solenoid As
7c4028 Solenoid Gp-Shut-Off
8c4774 Starting Motor Gp-Electric
8C***73Starting Motor Group-Electric; Starting Motor Group (Robert Bosch)1
8C***74Starting Motor Group-Electric1
8C***75Starting Motor Group-Electric1
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9x3416 Starting Motor Gp-Electric
8c4773 Starting Motor Gp-Electric
8C***73Starting Motor Group-Electric; Starting Motor Group (Robert Bosch)1
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7c0747 Starting Motor Gp-Electric-24 Volt
7C***47Starting Motor Group-Electric; Starting Motor Group (Electric) (24v)1
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9x9995 Starting Motor Gp-Electric
3E***98Starting Motor Group-Electric; Starting Motor Group (Delco Remy)1
8C***73Starting Motor Group-Electric; Starting Motor Group (Robert Bosch)1
9X***95Starting Motor Group-Electric1
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8c4775 Starting Motor Gp-Electric
3e1944 Starting Motor Gp-Electric
7c1687 Support Gp-Engine
4w2107 Turbocharger Gp
7c2183 Turbocharger Gp*R
2w9607 Fuel Pump & Valve Mechanism Gp
2W***07Valve Mechanism Group; Fuel Pump And Valve Mechanism Group1
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Engine Arrangement
7c1135 Engine Ar-Part 2 Of 2
1W***29Lines Group-Air1
1W***30Lines Group-Turbocharger Oil1
4W***69Pan Group-Oil; -Engine1
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7c1135 Engine Ar-Part 1 Of 2
1N***76Filter Group-Fuel1
1N***77Breather Group; Breather Group1
1N***77Cover Group-Inlet Manifold1
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7c1686 Engine Ar
4P***23Pump Group-Fuel Prime & Prim Filter1
7C***47Starting Motor Group-Electric; Starting Motor Group (Electric) (24v)1
7C***52Clamp-Turbocharger Outlet1
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Engine Installation
8u3026 Installation Ar
8u3040 Pump Gp-Piston-Part 2 Of 2
8u3040 Pump Gp-Piston-Part 1 Of 2
8u3873 Regulator Gp/8u3874 Manifold Gp
8U***74Regulator Group, Manifold Group1
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8u3863 Valve Gp
8u1091 Aid Gp-Ether Starting
8u0950 Coupling Gp
Fuel System & Governors
8u4616 Cable Gp-Governor Control
8u3391 Control Gp-Governor
8u3029 Lines Gp-Pump
8u3034 Tank Gp-Fuel (335 L)
5w8633 Pump Gp-Fuel Filler
5W***33Pump Group-Fuel Filler; -Refueling1
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8u0871 Pump Gp-Refueling
Hydraulic System
8u3230 Boom Ar-Hoe (2 Piece)
8u3228 Boom Ar-Hoe (1 Piece)
8u3138 Cont Gp-Stabilizer
8u3132 Cont Gp-Stabilizer
8u3137 Cont Gp-Stabilizer
8u3055 Cyl Gp-Lines & -Part 2 Of 2
8u3055 Cyl Gp-Lines &- Part 1 Of 2
8u3227 Cyl Gp-Stick
8u4045 Cylinder Gp
8u4044 Cylinder Gp
8u3111 Cylinder Gp(Lh) (Without Check Valve)
8u3112 Cylinder Gp(Rh) (Without Check Valve)
8u3447 Cylinder Gp-Boom(Lh)(With Check Valve)
8u3448 Cylinder Gp-Boom(Rh)(With Check Valve)
8u3347 Cylinder Gp-Lines & (W/Check Valve)
8u3446 Cylinder Gp-Lines &-Part 1 Of 2 (Boom)(W/Chkvlv)
8U***46Cylinder Group-Lines & (Boom)(W/Chkvlv)1
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8u3446 Cylinder Gp-Lines &-Part 2 Of 2 (Boom)(W/Chkvlv)
8U***46Cylinder Group-Lines & (Boom)(W/Chkvlv)1
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8u3330 Lines Gp-Hammer (2 Pc Boom)
8u3334 Lines Gp-Hammer (1 Pc Boom)
8u3339 Lines Gp-Hmr (2300)
8u3346 Lines Gp-Hmr (2800)
8u4198 Lines Gp-Hmr(2pc Boom)(W/Blow Adj)
8u3341 Lines Gp-Hmr (2800)
8u3344 Lines Gp-Hmr (1800)
8u4197 Lines Gp-Hmr(1pc Boom)(W/Blow Adj)
8u3337 Lines Gp-Hmr (1800)
8u3345 Lines Gp-Hmr (2300)
8u3445 Lines Gp-Hyd (Add'L Func) (1800)
8u3443 Lines Gp-Hyd (Add'L Func) (2800)
8u3414 Lines Gp-Hyd (Add'L Func)(W/Bkt Cyl)
8u3399 Lines Gp-Hyd (Add'L Func) 1 Pc Boom
8u4149 Lines Gp-Hyd (Add'L Func)(3500)
8u3444 Lines Gp-Hyd (Add'L Func) (2300)
8u3239 Lines Gp-Hyd (2800)
8u3242 Lines Gp-Hyd (4000)
8u3402 Lines Gp-Hyd (Add'L Func) 2 Pc Boom
8u3406 Lines Gp-Hyd (Add'L Func) (4000)
8u3836 Lines Gp-Hyd (Add'L-Func)(W/O Bkt Cyl)
8u3236 Lines Gp-Hyd (2300)
8u3233 Lines Gp-Hyd (1800)
8u3029 Lines Gp-Pump-Part 1 Of 3
8u3029 Lines Gp-Pump-Part 3 Of 3
8u3029 Lines Gp-Pump-Part 2 Of 3
8u3030 Lines Gp-Pump (Brake & Steering)-Type 1
8U***30Lines Group-Pump (Brake & Steering)1
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8u3030 Lines Gp-Pump (Brake & Steering)-Type 2
8U***30Lines Group-Pump (Brake & Steering)1
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8u3061 Lines Gp-Stabilizer
8u4144 Lines Gp-Stick (3500)
8u3512 Lines Gp-Stick Chk Valve (1 Pc Boom)
8u3514 Lines Gp-Stick Chk Valve (2 Pc Boom)
8u3059 Lines Gp-U/C-Part 2 Of 4
8u3059 Lines Gp-U/C-Part 4 Of 4
8u3059 Lines Gp-U/C-Part 3 Of 4
8u3059 Lines Gp-U/C-Part 1 Of 4
8u3130 Lines Gp-Undercarriage
8u3129 Lines Gp-Undercarriage
8u0252 Pump Gp-Steering
8u7949 Pump Gp-Steering
8u3449 Tank Gp-Hydraulic
8u3031 Tank Gp-Valve & Lines-Part 2 Of 4
8u3031 Tank Gp-Valve & Lines-Part 3 Of 4
8u3031 Tank Gp-Valve & Lines-Part 3a Of 4
8u3031 Tank Gp-Valve & Lines-Part 1 Of 4
8u3031 Tank Gp-Valve & Lines-Part 4 Of 4
8u2262 Valve Gp (Travel Control)
8u6651 Valve Gp (Outrigger)
8u1328 Valve Gp
8u0339 Valve Gp
8u3450 Valve Gp
8u0190 Valve Gp
8u2651 Valve Gp
8u1068 Valve Gp
8u1650 Valve Gp (Creeper Speed)
5w9970 Valve Gp
8u0318 Valve Gp
5w9966 Valve Gp
8u0282 Valve Gp-Control
8u0358 Valve Gp
8u2270 Valve Gp (Boom)
8u1634 Valve Gp
8u0337 Valve Gp-Remote Control
8u2269 Valve Gp (Swing)
5w9968 Valve Gp
8u2284 Valve Gp (Pressure Cut Off)
8u2281 Valve Gp (Stick)
8u5568 Valve Gp
5w9967 Valve Gp
5w9422 Valve Gp
8u2282 Valve Gp (Bucket)
8u1067 Valve Gp
8u7221 Valve Gp-Check
8u7222 Valve Gp-Check
8u1847 Valve Gp
8u3415 Valve Gp-Diverter
8u2125 Connection Gp-Hammer (Krupp)
8u7188 Control Gp-Brake
8u0338 Control Gp-Brake
8u1649 Control Gp-Creeper Speed(Elec)(W/O Ind Cont)
8u1651 Control Gp-Creeper Speed(Elec)(W/Ind Cont)
8u0336 Control Gp-Hand
5w9803 Control Gp-Implement & Seat-Part 1 Of 6
5w9803 Control Gp-Implement & Seat-Part 3 Of 6
5w9803 Control Gp-Implement & Seat-Part 5 Of 6
5w9803 Control Gp-Implement & Seat-Part 6 Of 6
5w9803 Control Gp-Implement & Seat-Part 4 Of 6
5w9803 Control Gp-Implement & Seat-Part 2 Of 6
5w9803 Control Gp-Implement & Seat-Part 6a Of 6
8u4711 Control Gp-Lines & (Hammer)-Part 2 Of 2
8u4711 Control Gp-Lines & (Hammer)-Part 1 Of 2
8u2836 Cooler Gp-Hyd Oil
8u0189 Filter Gp
8u0198 Filter Gp
8u1340 Indicator Gp-Lift
8u1346 Indicator Gp-Lift
8u0357 Lines Gp-Additional Function
8U***57Lines Group-Additional Function1
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5w9802 Lines Gp-Pilot-Part 3 Of 3
5w9802 Lines Gp-Pilot-Part 1 Of 3
5w9802 Lines Gp-Pilot-Part 2 Of 3
8u1931 Manifold Gp-Filter &
5w9796 Platform Gp-Pilot Lines-Part 1 Of 4
5w9796 Platform Gp-Pilot Lines-Part 4 Of 4
5w9796 Platform Gp-Pilot Lines-Part 3 Of 4
5w9796 Platform Gp-Pilot Lines-Part 2 Of 4
8u1881 Pump Gp-Brake
8u0188 Pump Gp-Gear
8u3186 Pump Gp-Metering
5w4666 Seat Gp-Operator
8u2980 Steering Gp-Supplemental-Part 2 Of 2
8u2980 Steering Gp-Supplemental-Part 1 Of 2
8u2592 Switch Gp-Overload
5w5879 Switch Gp-Rotor
8u4023 Valve Gp-Selector (Work Mode)
5w5836 Valve Gp-Solenoid
8u0359 Valve Gp-Solenoid
8u4666 Valve-Accumulator
Intake & Exhaust System
8u2599 Filter Gp-Air
5w9925 Muffler Gp
Boom, Sticks, Linkage & Buckets
5w3474 Bkt Gp.-G.P. 1200mm W/Teeth (1005l)
5w3470 Bkt Gp.-G.P. 800mm W/Teeth (615l)
5w3473 Bkt Gp.-G.P. 1100mm W/Teeth (905l)
5w3469 Bkt Gp.-G.P. 700mm W/Teeth (520l)
5w3472 Bkt Gp.-G.P. 1000mm W/Teeth (810l)
5w3471 Bkt Gp.-G.P. 900mm W/Teeth (710l)
8u3230 Boom Ar-Hoe (2 Piece)
8u3228 Boom Ar-Hoe (1 Piece)
8u4133 Bracket Ar
5w3704 Bucket As.-Brg& (Ditch Clng) (2000)
5w3705 Bucket As.-Brg& (Ditch Clng) (2400)
5w7613 Bucket Gp-Rock (1100mm W/Teeth)(920l)
5w7612 Bucket Gp-Rock (850mm W/Teeth)(665l)
5w7614 Bucket Gp-Rock (1200mm W/Teeth)(1025l)
5w7615 Bucket Gp-Rock (1300mm W/Teeth)(1130l)
5w3726 Bucket Gp.(500 W/T 355l)
5w3727 Bucket Gp.-Brg & (600 W/T 425l)
5w3484 Bucket Gp.-Rock (750mm W/Teeth)(565l)
5w3486 Bucket Gp.-Rock (1000mm W/Teeth)(815l)
8u3507 Cylinder Gp
8u4046 Cylinder Gp
8u3681 Cylinder Gp
8u3235 Stick Gp-Hoe (2300)
8u3232 Stick Gp-Hoe (1800)
8u4141 Stick Gp-Hoe (3500)
8u3241 Stick Gp-Hoe (4000)
8u3238 Stick Gp-Hoe (2800)
8u3397 Valve Gp (W/Bkt Cyl)
5w3714 Bucket Gp-G.P. (1400mm W/Teeth)(1200l)
9j3167 Tip Gp -J 300
8j4955 Tip Gp -J 350
Cab, Gauges & Accessories
8u1495 Harness Gp/ 8u1494 Wire Gp/ 8u1493 Wire Gp
8u3067 Heater Gp-Cab-Part 2 Of 3
8u3067 Heater Gp-Cab-Part 1 Of 3
8u3067 Heater Gp-Cab-Part 3 Of 3
5w9656 Windshield Gp (For Glass Cab)-Part 2 Of 2
Windshield Gp (For Lexan Cab)-Part 1 Of 2
8u7748/8u7759 Windshield Gp
Windshield Gp (For Lexan Cab)-Part 2 Of 2
5w9656 Windshield Gp (For Glass Cab)-Part 1 Of 2
5w6255 Belt Gp-Seat
8u0181 Cap Gp (Laminated)-Part 5 Of 8
8u0543 Cap Gp (Lexan)-Part 2 Of 8
8u0543 Cap Gp (Lexan)-Part 5 Of 8
8u0181 Cab Gp (Laminated)-Part 1 Of 8
8u0181 Cap Gp (Laminated)-Part 2 Of 8
8u0181 Cab Gp (Laminated)-Part 3 Of 8
8u0181 Cab Gp (Laminated)-Part 8 Of 8
8u0181 Cab Gp (Laminated)-Part 4 Of 8
8u0543 Cab Gp (Lexan)-Part 7 Of 8
8u0183 Cab Gp (920) (Lexan Panes)
8u0183 Cab Gp (920)
8u0181 Cab Gp (Laminated)-Part 6 Of 8
8u0180 Cab Gp (920)
8u0543 Cab Gp (Lexan)-Part 3 Of 8
8u0543 Cab Gp (Lexan)-Part 4 Of 8
8u0181 Cab Gp (Laminated)-Part 7 Of 8
8u0543 Cab Gp (Lexan)-Part 8 Of 8
8u0543 Cab Gp (Lexan)-Part 6 Of 8
8u0543 Cab Gp (Lexan)-Part 1 Of 8
8u0180 Cab Gp (920) (Glass Panes)
8u7743 Cab Gp-Glass-Part 3 Of 8
8u7743 Cab Gp-Glass-Part 8 Of 8
8u7743 Cab Gp-Glass-Part 2 Of 8
8u7743 Cab Gp-Glass-Part 5 Of 8
8u7743 Cab Gp-Glass-Part 4 Of 8
8u7743 Cab Gp-Glass-Part 1 Of 8
8u7743 Cab Gp-Glass-Part 7 Of 8
8u7743 Cab Gp-Glass-Part 6 Of 8
8u7865 Cab Gp-Lexan-Part 5 Of 8
8u7865 Cab Gp-Lexan-Part 4 Of 8
8u7865 Cab Gp-Lexan-Part 2 Of 8
8u7865 Cab Gp-Lexan-Part 3 Of 8
8u7865 Cab Gp-Lexan-Part 1 Of 8
8u7865 Cab Gp-Lexan-Part 7 Of 8
8u7865 Cab Gp-Lexan-Part 6 Of 8
5w7308 Cable Gp-Operator Manual
8u0933 Gage Gp-Part 1 Of 4
8u0933 Gage Gp -Part 4 Of 4
8u0933 Gage Gp-Part 2 Of 4
8u0933 Gage Gp -Part 3 Of 4
8u1324 Gage Gp-Pilot Pressure
5w9255 Guard Gp-Roof (Fops)
5w9476 Guard Gp. - Vandalism (Glass Panes)
5w9775 Guard Gp.-Vandlism (For Use With Lexan Cab)
8u1489 Harness Gp
8u1490 Harness Gp
8u1488 Harness Gp
5w6001 Heater Gp-Water
8u4246 Heater Gp-Water
5w9239 Lighting Gp-Beacon
5w9475 Mirror Gp (Lh)
5w9809 Plug Gp-Heater
5w9250 Radio Gp
8u2511 Visor Gp - Rain
8u2138 Washer Gp-Windshield
Chassis
8u3108 Axle Ar-Front-Part 1 Of 4
8u3076 Axle Ar-Front
8u3108 Axle Ar-Front-Part 2 Of 4
8u3108 Axle Ar-Front-Part 3 Of 4
8u3108 Axle Ar-Front-Part 4 Of 4
8u3077 Axle Ar-Rear
8u3384 Carrier Gp-Differential-Part 3 Of 3
8u3384 Carrier Gp-Differential-Part 2 Of 3
8u3384 Carrier Gp-Differential-Part 1 Of 3
8u2452 Transmission Gp-Part 3 Of 4
8u2452 Transmission Gp-Part 2 Of 4
8u2452 Transmission Gp-Part 4 Of 4
8u2452 Transmission Gp-Part 1 Of 4
Chassis & Undercarriage
8u3062 Counterweight Gp (3350 Kg)
8u3070 Cover Gp
8u0508 Cover Gp
8u3083 Cylinder Gp
8u3109 Cylinder Gp
8u1983 Cylinder Gp
8u3032 Firewall Gp
8u3057 Frame Ar-U/C-Part 1 Of 3
8u3057 Frame Ar-U/C-Part 3 Of 3
8u3057 Frame Ar-U/C-Part 2 Of 3
8u3058 Frame Gp-Stabilizer
8u3126 Frame Gp-Stabilizer
5w3829 Guard Gp-Pinion
8u3121 Guard Gp-Pinion
8u3028 Hood Gp-Guard &-Part 1 Of 2
8u3028 Hood Gp-Guard &-Part 2 Of 2
8u3014 Plate Gp, 8u2197 Valve Gp
8u3027 Platform Gp
8u3078 Shaft Gp-Drive
5w2333 Shaft Gp-Drive
8u3060 Stabilizer Gp
8u2202 Valve Gp / 8u2212 Valve Gp
5w9910 Box Gp-Battery
8u1611 Box Gp-Tool
8u1618 Bracket Gp-Towing
8u1557 Brake Gp-Parking
8u1389 Brake-Gp
8u6848 Cylinder Gp-Oscillating Axle
8U***48Cylinder Group-Oscillating Axle1
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8u0507 Door Gp
8u0134 Door Gp
8u2721 Door Gp-Radiator Cap (Lockable)
8u2512 Drive Gp
5w9928 Drive Gp-Swing
8u3025 Frame Ar-Upper-Part 3 Of 3
8u3025 Frame Ar-Upper-Part 1 Of 3
8u3025 Frame Ar-Upper-Part 2 Of 3
5w4581 Guard Gp-Headlight
5w9806 Mirror Gp (Rh)
8u1575 Motor Gp-Part 2 Of 2
8u1575 Motor Gp-Part 1 Of 2
8u2556 Motor Gp-Swing
8u1806 Panel Gp
8u2831 Panel Gp
5w9796 Platform Gp-Pilot Lines
5w6259 Ring Gp-Tire
5w0942 Ring Gp.-Tire
5w7092 Solid Rubber Tire Gp-Rim &
8u1359 Swivel Gp-Part 1 Of 2
8u1359 Swivel Gp-Part 2 Of 2
5w0924 Tire Gp-Complete
5W***24Tire Group-Complete & 18-19.5 Xs - Super Single1
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5w0934 Tire Gp-Rim &
5W***34Tire Group-Rim & 10.00-20 New Tire1
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5w7089 Tire Gp-Rim &
5W***89Tire Group-Rim & 10.00-20 New Tire1
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5w7086 Tire Gp-Rim &
5W***86Tire Group-Rim & 10.00-20 New Tire1
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5w8283 Tire Gp-Rim &
5W***83Tire Group-Rim & 11.00-20 New Tire1
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8u1687 Tire Gp-Rim &
8u1682 Tire Gp-Rim &
5w0918 Tire Gp.-Rim &
5W***18Tire Group.-Rim & 10.00-20 Recondition1
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5w0935 Tire Gp.-Rim &
5W***35Tire Group.-Rim & 11.00-20 New Tire1
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5w0919 Tire Gp.-Rim &
5W***19Tire Group.-Rim & 11.00-20 Recondition1
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5w0930 Tire Gp.-Rim &
5W***30Tire Group.-Rim & 18-19.5 Xf - Super Single1
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8u4746 Warning Gp-Road
Decals
7x3243 Lubricant Gp-Paint & (French)
7x3242 Lubricant Gp-Paint & (English)
7x3248 Lubricant Gp-Paint & (Arabic)
7x3244 Lubricant Gp-Paint & (Spain)
8c6589 Lubricant Gp-Paint & (German)
7x3247 Lubricant Gp-Paint & (Italian)
7x3245 Lubricant Gp-Paint & (Portugeese)

Frequently asked questions

What engine powers the Caterpillar 224B?

The Caterpillar 224B is equipped with a Cat 3116 DIT engine, delivering approximately 100 kW (135 hp) of power.

What is the operating weight of this machine?

The Caterpillar 224B has an operating weight of approximately 20.3 t (20.3 tonnes).

What replaced the 224B in the Caterpillar lineup?

While specific direct successors vary by regional configuration, the 224B is part of a broader lineage of Caterpillar excavators that evolved into more advanced series like the 300-series models.

What 224B owners discuss

What engine is used in the Caterpillar 224B wheel excavator?
The machine is equipped with a Cat 3116 DIT engine, providing 100 kW (135 hp) of power.
How should I manage hydraulic oil contamination in the system?
Because the hydrostatic propel and vibratory functions share a single hydraulic circuit, contamination affects the entire system simultaneously. It is recommended to run hydraulic oil samples every 500 hours.
What are the common symptoms of electrical or sensor issues on this machine?
The gauge cluster uses analog gauges (oil pressure, coolant temperature, alternator, hydraulic oil temperature, and vibratory indicator) rather than digital diagnostics. Troubleshooting must be symptom-based; for example, a dead vibratory light typically indicates a faulty switch or solenoid rather than a control module error.
What is the typical operating weight for this model?
The machine weight is approximately 20.3 t (20.3 tonnes).
What should I check when buying a used 224B excavator?
Verify the exact serial-prefix specification sheet and the installed attachment package. Features such as a long stick, wide track shoes, quick couplers, or auxiliary hydraulics can significantly change the machine's weight, reach, and transport planning.

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

Need a specific 224B part?

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