Caterpillar 304.5
Caterpillarmini hydraulic excavator(no series)

Caterpillar 304.5

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar 304.5 is a mini hydraulic excavator designed for utility, landscaping, and demolition applications. This machine falls within the compact equipment class, featuring an operating weight range of approximately 9,866 lb (4,475 kg) to 10,130 lb (4,595 kg) depending on cab configuration. It is powered by a 3013 engine delivering 3-38 hp (28 kW) net power. The series includes various configurations such as standard stick and long stick options, with production noted between 2000 and 2002.

Across its production life, the 304.5 maintained a focus on versatility through available attachments and boom swing capabilities. In today's used market, this machine remains significant for operators seeking reliable performance in tight-access job sites. Its value is driven by the availability of Caterpillar parts and the durability of its hydraulic system, making it a staple for secondary fleet support and specialized utility work.

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 304.5 specifications

Engine

ModelCat C2.4
Net Power40.20 hp (30.00 kW)
Gross Power41.80 hp (31.20 kW)
Displacement2.40 L (146.00 in³)
Bore87.00 mm (3.40 in)
Stroke102.40 mm (4.00 in)
Emissions TierU.S. EPA Tier 4 Final / EU Stage IIIA

Weights

Operating Weight8996.00 lb (4080.00 kg)
Weight - Canopy, Standard Stick8655.00 lb (3925.00 kg)
Weight - Cab, Standard Stick8930.00 lb (4050.00 kg)
Weight - Canopy, Long Stick8721.00 lb (3955.00 kg)
Weight - Cab, Long Stick8996.00 lb (4080.00 kg)
Ground Pressure4.20 psi (28.70 kPa) to 4.30 psi (29.80 kPa) varies by configuration/series

Dimensions

Shipping Length190.00 in (4820.00 mm) to 194.00 in (4930.00 mm) varies by configuration/series
Shipping Height98.00 in (2500.00 mm)
Shipping Width77.00 in (1950.00 mm)
Tail Swing Radius38.00 in (975.00 mm)
Track Shoe Width14.00 in (350.00 mm)
Undercarriage Length87.00 in (2220.00 mm)
Ground Clearance1.08 ft (32.9 cm) - note: source value 1.08 ft provided for center clearance
Width - Upper Structure4.3 ft (131 cm)

Performance

Max Dig Depth123.00 in (3130.00 mm) to 135.00 in (3430.00 mm) varies by configuration/series
Max Reach at Ground206.00 in (5220.00 mm) to 215.00 in (5470.00 mm) varies by configuration/series
Max Dump Height141.00 in (3590.00 mm) to 145.00 in (3690.00 mm) varies by configuration/series
Max Cutting Height196.00 in (4980.00 mm) to 200.00 in (5070.00 mm) varies by/configuration/series
Swing Speed10.00 rpm
Travel Speed - High3.20 mph (5.10 km/h)
Travel Speed - Low1.90 mph (3.10 km/h)
Gradeability - Maximum30°
Maximum Traction Force - Low Speed31.00 kN (6969.00 lb)

Forces

Bucket Digging Force37.80 kN (8498.00 lb)
Stick Digging Force - Standard4856.00 lb (21.60 kN)
Stick Digging Force - Long4384.00 lb (19.50 kN)

Service capacities (summary)

Fuel Tank15.10 gal (57.00 L)
Hydraulic System58.00 L (15.30 gal)
Hydraulic Tank6.60 gal (25.00 L)
Engine Oil2.50 gal (9.50 L)
Cooling System1.50 gal (5.50 L)

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

304.5 fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter)7.4 l (2 gal (US))CAT DEO; SAE 15W-40 or SAE 10W-30
Cooling system6.3 l (1.7 gal (US))CAT ELC (50/50 Premix)
Fuel tank55 l (14.5 gal (US))Not specified
Hydraulic system total85 l (22.5 gal (US))CAT HYDO Advanced 10 or CAT HYDO Advanced 30 (for hot climates)
Hydraulic tank56 l (14.8 gal (US))CAT HYDO Advanced 10 or CAT HYDO Advanced 30 (for hot climates)
Grease (spec only)Not specifiedCAT Multipurpose, CAT Advanced 3Moly, CAT Ultra 5Moly, CAT Desert Gold (hot-weather), or CAT Arctic Platinum (cold-weather)

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

Caterpillar 304.5 maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level and condition
  • Verify hydraulic fluid level via sight glass
  • Inspect coolant level and cap
  • Drain water from fuel/water separator
  • Check air filter restriction indicator
  • Inspect for fluid leaks under machine
Every 250 h
  • Change engine oil and filter
  • Grease all boom, stick, bucket, and swing points
  • Perform visual inspection of machine
  • Check belt and hose condition
  • Drain fuel/water separator
Every 500 h
  • Replace fuel filter
  • Replace hydraulic return filter
  • Perform battery service
  • Conduct detailed undercarriage inspection
  • Test coolant additive/SCA levels
Every 1,000 h
  • Perform hydraulic oil sample analysis (S.O.S)
  • Inspect turbocharger
  • Check ROPS bolt torque
  • Measure undercarriage wear
  • Clean or replace primary air filter element
Every 2,000 h
  • Change hydraulic system oil
  • Perform coolant flush and replacement
  • Conduct comprehensive structural inspection of boom/stick welds
  • Evaluate major components
  • Replace worn belts and hoses

Servicing the 304.5 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. For the hydraulic system, track particle counts and water content to prevent pump cavitation. Regular sampling during 1,000-hour intervals allows for detecting degradation before component failure occurs.

Corrective & Common Repairs

Monitor hydraulic hoses for cracks or abrasion to prevent high-pressure leaks. Inspect the control valve assembly located under the left side floor plates for any signs of seepage. If hydraulic performance drops, check the spin-on return filter and O-ring face seals on fittings. Address any engine starting issues by inspecting electrical harnesses and Deutsch sealed connectors.

Overhaul & Rebuild Points

During major 2,000-hour services, perform a comprehensive structural inspection of boom and stick welds. Evaluate the condition of the 3013 engine components, specifically checking the turbocharger and cooling system integrity. Inspect final drive and swing drive oil for metal particles to determine if gear or bushing replacement is required during a full machine rebuild.

Seasonal & Environment Servicing

In dusty or quarry environments, check air filters daily and clean the radiator steel core fins frequently. For operation in cold climates, ensure use of appropriate fluids like Cat Arctic Platinum Grease. In urban settings using rubber-belted tracks, inspect for surface damage. Always verify track tension and shoe condition before seasonal transitions to maintain optimal ground pressure.

304.5 common service parts

Part numberPart
121-3661Filter Element As-AirCheck fitment →
171-0493Filter Element As-AirCheck fitment →
146-7472Filter Element As-AirCheck fitment →
146-6388Filter Element-Cab AirCheck fitment →
217-2456Filter Element As-OilCheck fitment →

Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.

304.5 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
E360Engine Coolant Temperature — HighLow coolant, failed thermostat, or water pump issueDiagnose cooling system; do not operate until resolved
E361Engine Coolant Temperature — Very High (Shutdown)Severe cooling system failurePerform full cooling system diagnosis; engine shutdown required

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

304.5 attachments & work tools

Buckets

Available in various capacities including 0.076 m³ (2.68 ft³) for older series. Options include MP buckets with cutting edges and pin-on or pin-grabber configurations.

Hydraulic hammers

Compatible with the machine's hydraulic system for breaking applications. The 304.5E2 XTC supports auxiliary circuits for work tools like hammers via mechanical or hydraulic quick couplers.

Quick couplers

Supports mechanical or hydraulic quick couplers for the excavator front linkage. The XTC configuration features a compact loader coupler interface for increased versatility.

Thumbs/grapples

Standard equipment includes a thumb-ready stick. Hydraulic utility thumbs and grapple rakes are available for material handling tasks.

Rippers

Compatible with the machine's hydraulic system for soil and surface breaking applications.

Hydraulic-kit notes

Equipped with load-sensing hydraulics and a variable displacement piston pump. Primary auxiliary circuit provides 70.00 L/min (18.50 gal/min) at 245 bar (3,553 psi).

All 304.5 assemblies by section

Every catalogued assembly group for the Caterpillar 304.5. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
163-6967 Air Cleaner Gp
09***92Clamp, Hose3
09***85Clamp; (Hose)1
09***77Valve (Evacuation)1
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153-7919 Gasket Gp-Exhaust Manifold
15***19Gasket Group-Exhaust Manifold1
15***20Gasket1
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160-3568 Manifold Gp-Exhaust
15***92Nut2
15***26Manifold-Exhaust1
15***27Gasket-Exhaust1
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154-1916 Manifold Gp-Inlet
15***62Bolt8
15***73Pin2
15***16Manifold Group-Inlet1
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253-4438 Muffler & Converter
163-6964 Muffler Gp
14***53Bolt; (M14x1.5x30-mm)2
14***25Clamp1
16***64Muffler Group1
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Basic Engine
192-0134 Camshaft Gp
15***92Key-Woodruff1
15***04Camshaft As1
15***05Bearing1
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154-1331 Cover Gp-Valve Mechanism
15***31Cap; (Engine Oil Filler)(Engine Oil Filler)1
15***33Seal; (Engine Oil Filler Cap)1
15***37Plate1
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192-0106 Crankshaft Gp
14***08Kit-Bearing; (Rod)1
15***18Key1
15***01Crankshaft Group1
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217-1447 Crankshaft Gp
15***02Dowel8
15***18Key1
15***81Cap As-Bearing1
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191-8528 Cylinder Block Gp
15***87Plug3
15***90Ball Bearing1
15***91Plug1
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217-7395 Cylinder Block Gp
15***87Plug3
15***91Plug1
15***94Dowel2
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183-1337 Cylinder Block Gp
15***82Plug2
15***84Plug5
15***86Plug3
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154-0884 Cylinder Head Gp
15***56Pin-Cotter16
15***57Cap8
15***58Spring8
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154-0881 Cylinder Head Gp
15***81Cylinder Head Group1
15***84Cylinder Head Group1
15***88Bolt14
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192-0115 Flywheel Gp
15***05Gear-Starter; (126-Teeth)1
15***06Bolt6
19***15Flywheel Group1
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192-0116 Housing Gp-Flywheel
13***01Housing-Flywheel1
13***02Bolt6
15***75Bolt10
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192-0129 Housing Gp-Front
15***60Nut1
15***62Bolt3
15***38Bolt2
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339-3014 Kit-Front Gear
15***48Cover1
15***49Spring1
15***50Collar1
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154-1877 Lifting Gp-Engine
15***75Bolt2
15***77Lifting Group-Engine1
19***73Plate; (Front)1
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163-6965 Mounting Gp-Engine
09***61Mount-Flexible4
09***62Mount-Flexible4
14***53Bolt; (M14x1.5x30-mm)8
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202-2704 Pan Gp-Oil
15***32Washer2
15***33Bolt30
15***35Seal-O-Ring1
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192-0107 Piston & Rod Gp
15***67Rod As-Connecting4
15***69Bushing1
15***70Bolt2
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217-1480 Piston & Rod Gp
14***08Kit-Bearing; (Rod)1
15***67Rod As-Connecting4
15***69Bushing1
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154-1878 Pulley Gp-Crankshaft
15***92Nut4
15***92Key-Woodruff1
15***94Gasket1
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154-1236 Valve Mechanism Gp
15***87Screw-Adjustment8
15***90Nut8
15***35Seal-O-Ring1
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Cooling System
191-0558 Fan Gp-Suction
15***40Bolt4
15***33Plate1
16***60Plate1
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225-8171 Liner Gp-Radiator
22***71Liner Group-Radiator1
22***72Liner1
22***73Liner1
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311-0053 Pump Gp-Water
15***17Plug1
15***18Plate1
15***20Bolt3
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191-9344 Pump Gp-Water
15***60Nut3
15***61Bolt4
15***56Bolt2
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163-6966 Radiator & Mounting Gp
09***85Clamp; (Hose)2
12***74Valve-Drain1
12***76Clamp-Hose2
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Electrical And Starting System
163-7703 Alarm Gp-Travel
14***40Screw-Machine; (M3x0.5x40-mm)(M3x0.5x40mm)2
16***39Alarm As1
16***03Alarm Group-Travel1
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163-6968 Alternator Gp-Charging
14***52Alternator Group-Charging1
14***57Bracket As1
15***47Strap1
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154-7807 Battery & Wiring Gp
0S***70Cap Screw (5/8" Long)2
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)3
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192-0104 Glow Plug Gp
15***76Nut1
15***77Washer1
17***85Glow Plug4
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146-6366 Lamp Gp-Flood
14***66Lamp Group-Flood; -12-Volt1
15***54Lens As; (Flood)1
15***55Body As1
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128-6985 Lamp Gp-Warning Beacon
12***85Lamp Group-Warning Beacon; -Amber, Magnetic Mount, Rotating1
9R***42Plug As1
9R***58Cord As1
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146-6419 Lighting Gp-Cab
14***66Lamp Group-Flood; -12-Volt2
14***19Lighting Group-Cab1
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163-7637 Lighting Gp-Flood
14***66Lamp Group-Flood; -12-Volt1
16***40Bracket As, Clamp; Cable Thimble, Clamp1
16***37Lighting Group-Flood; -Boom1
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191-2931 Lighting Gp-Flood
14***66Lamp Group-Flood; -12-Volt2
19***30Plate1
19***31Lighting Group-Flood1
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197-6806 Lighting Gp-Flood -Boom
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
14***66Lamp Group-Flood; -12-Volt1
16***40Bracket As, Clamp; Cable Thimble, Clamp1
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152-8151 Lighting Gp-Warning Beacon
10***50Switch As-Rocker; (Warning Beacon, Power Recep)(Warning Beacon)1
11***99Gasket; (Air Conditioner Control)1
12***85Lamp Group-Warning Beacon; -Amber, Magnetic Mount, Rotating1
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138-2219 Starting Motor Gp-Electric
13***19Starting Motor Group-Electric1
15***49Starting Motor Group-Electric1
8T***21Washer-Hard; (11x21x2.5-mm Thk)(M10x1.50x30mm)2
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161-8270 Switch Gp-Pressure -Oil
15***17Switch Group-Pressure; (Engine Oil)1
15***35Seal-O-Ring1
16***70Switch Group-Pressure; -Oil1
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145-8237 Wiring Gp-Cab
14***37Wiring Group-Cab1
15***91Harness As-Lighting1
15***87Grommet2
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145-8236 Wiring Gp-Cab
08***77Lamp Group-Dome; (12-Volt)1
14***36Wiring Group-Cab1
15***92Harness As-Cab1
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Engine Arrangement
231-7678 Engine Ar-Primary
15***19Gasket Group-Exhaust Manifold1
15***81Cylinder Head Group1
15***36Valve Mechanism Group1
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168-3313 Engine Ar-Primary
15***19Gasket Group-Exhaust Manifold1
15***81Cylinder Head Group1
15***36Valve Mechanism Group1
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163-6963 Installation Ar-Engine
13***19Starting Motor Group-Electric1
16***63Installation Ar-Engine1
16***64Muffler Group1
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Frame And Body
163-7679 Counterweight Gp
14***48Washer4
14***33Shim10
14***62Seal1
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163-9993 Cover Gp-Side
14***38Spring1
14***97Stay1
14***74Collar2
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172-2726 Cover Gp-Side
15***41Seal1
15***50Seal1
17***26Cover Group-Side1
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163-9994 Cover Gp-Side
14***54Plate As1
14***74Collar2
15***41Seal1
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172-2069 Firewall Gp
14***58Seal1
14***22Seal1
14***24Seal1
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163-9999 Frame Gp-Swing
14***34Collar6
14***30Shim; (1.2-mm Thk)1
14***52Bushing1
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169-1337 Frame Gp-Upper
09***65Grommet1
14***38Seal1
14***32Seal2
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172-0620 Guard Gp-Bottom
17***20Guard Group-Bottom1
17***21Plate As1
18***49Plate As1
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172-2742 Hood Gp
15***37Seal2
15***34Seal1
17***42Hood Group1
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154-7805 Hood Gp
14***14Bracket As1
15***05Hood Group1
17***27Hook As1
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146-5976 Lines Gp-Grease
14***76Lines Group-Grease1
15***79Adapter1
3B***86Fitting-Grease; (Hydraulic)2
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163-7705 Plate Gp-Firewall
14***95Hose; (650-cm Each)0
16***05Plate Group-Firewall1
17***69Firewall Group1
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Fuel System
172-0714 Control Gp-Governor
09***09Nut; (M16x2.0 Thd)2
09***35Washer-Hard3
13***04Washer-Bevel; (1.8mm Thk)4
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158-5726 Control Gp-Governor
14***11Cover As1
14***90Bracket1
14***92Cable As1
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154-7809 Filter & Lines Gp-Fuel
15***09Filter & Lines Group-Fuel1
15***75Bracket As1
16***14Tube As2
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144-9962 Filter Gp-Water Sep & Fuel
11***01Bowl As-Water Collection1
11***18Ring-Retaining1
11***19Nut1
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191-9301 Governor Gp
15***60Nut6
15***83Pin1
15***87Washer1
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176-7711 Pump & Mtg Gp-Fuel Transfer
15***73Bolt2
17***11Pump & Mtg Group-Fuel Transfer1
29***70Pump As-Fuel Transfer1
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191-9337 Pump Gp-Fuel Injection
19***37Pump Group-Fuel Injection1
20***18Seal-O-Ring4
20***21Washer4
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191-9340 Pump Gp-Fuel Injection
15***92Nut3
15***60Nut3
15***09Solenoid; (Fuel Shutoff)1
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306-6346 Pump Gp-Fuel Injection
20***26Bolt-Special; (Banjo)1
20***27Washer2
20***28Connector1
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176-9954 Pump Gp-Fuel Prm & Prim Filter
12***59Pump Group-Fuel Priming1
12***62Bladder1
14***62Filter Group-Water Sep & Fuel1
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154-2387 Pump Gp-Fuel Transfer
15***71Gasket1
15***72Bolt1
15***73Bolt1
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158-5722 Tank Gp-Fuel
12***11Valve-Ball1
14***53Seal2
14***36Shim1
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Hydraulic System
199-7447 Accumulator Gp-Hydraulic -Uncharged
19***47Accumulator Group-Hydraulic; -Uncharged-Pilot Oil1
4I***39Core1
4I***62Cap1
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087-4454 Accumulator Gp-Hydraulic -Charged
08***54Accumulator Group-Hydraulic; -Charged-Pilot Oil1
08***75Core1
08***76Cap1
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4i-1536 Accumulator Gp-Hydraulic -Charged
4I***36Accumulator Group-Hydraulic; -Charged-Pilot Oil1
4I***39Core1
4I***62Cap1
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5i-8416 Accumulator Gp-Hydraulic -Charged
08***54Accumulator Group-Hydraulic; -Charged-Pilot Oil1
4I***67Cap1
5I***16Accumulator Group-Hydraulic; -Charged-Pilot Oil1
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087-4456 Accumulator Gp-Hydraulic -Charged
08***56Accumulator Group-Hydraulic; -Charged-Pilot Oil1
4I***36Accumulator Group-Hydraulic; -Charged-Pilot Oil1
5I***16Accumulator Group-Hydraulic; -Charged-Pilot Oil1
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163-6962 Cooler Gp-Hydraulic Oil
16***62Cooler Group-Hydraulic Oil1
18***46Cooler As-Oil1
8T***21Washer-Hard; (11x21x2.5-mm Thk)(M10x1.50x30mm)2
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163-6973 Cylinder Gp-Blade
09***90Seal-U-Cup1
09***29Seal-Lip Type1
14***66Bushing2
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163-6970 Cylinder Gp-Boom
14***66Bushing2
16***70Cylinder Group-Boom1
19***95Bolt2
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163-6972 Cylinder Gp-Bucket
09***29Seal-Lip Type2
09***21Seal-O-Ring1
14***67Bushing1
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170-8945 Cylinder Gp-Stick
09***22Seal-O-Ring (Id=69.60mm)2
09***90Seal-U-Cup1
09***29Seal-Lip Type1
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163-6971 Cylinder Gp-Swing Boom
09***13Seal-O-Ring3
09***23Seal-O-Ring (Id=79.60mm)2
09***90Seal-U-Cup1
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161-2487 Drain Gp-Ecology
10***39Plug As-Drain; (Hydraulic Tank)1
15***27Tube As-Drain1
16***87Drain Group-Ecology1
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163-6950 Hydraulic Ar
14***59Control & Mtg Group-Joystick1
16***49Tank Group-Hydraulic1
16***50Hydraulic Ar1
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154-7826 Lines Gp-Blade
15***26Lines Group-Blade1
17***88Hose As1
17***89Hose As1
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164-0004 Lines Gp-Boom Cylinder
16***65Hose As2
16***04Lines Group-Boom Cylinder1
19***62Connector1
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154-2654 Lines Gp-Bucket Cylinder
15***96Fitting As; (Quick Disconnect, Male)(Quick Disconnect)2
15***97Fitting As; (Quick Disconnect, Female)2
15***54Lines Group-Bucket Cylinder1
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154-2655 Lines Gp-Bucket Cylinder
15***96Fitting As; (Quick Disconnect, Male)(Quick Disconnect)2
15***97Fitting As; (Quick Disconnect, Female)2
15***55Lines Group-Bucket Cylinder1
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164-0006 Lines Gp-Bucket Cylinder
14***18Clamp2
16***56Tube As1
16***58Hose As2
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163-7661 Lines Gp-Bucket Cylinder
14***18Clamp2
16***61Lines Group-Bucket Cylinder1
16***56Tube As1
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180-4179 Lines Gp-Connecting
15***94Coupler As-Quick Disconnect; (Female)(Quick Disconnect)1
15***95Fitting As; (Quick Disconnect, Male)1
16***79Adapter2
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163-6953 Lines Gp-Front
09***68Bolt, Hexagon Socket2
14***04Grommet1
14***02Collar2
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163-6955 Lines Gp-Hydraulic Pump
12***40Hose1
14***54Clamp2
14***76Plate1
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154-7841 Lines Gp-Load Control Valve
15***41Lines Group-Load Control Valve1
16***42Bolt; (M10x1.5x55-mm)1
16***27Valve Group-Load Control; -Tilt Cylinder1
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187-1892 Lines Gp-Pilot
16***74Valve Group-Selector; -Joystick Pattern1
17***35Film-Instruction; (Control Pattern)1
17***95Tube As1
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170-8946 Lines Gp-Pilot
09***79Tape-Color; (White)4
09***80Tape - Color; (Blue)4
15***45Connector3
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163-6957 Lines Gp-Pilot
08***56Accumulator Group-Hydraulic; -Charged-Pilot Oil1
14***69Valve Group-Solenoid; -Boom Lowering1
14***86Manifold Group-Control; -Pilot, Travel Speed1
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163-6954 Lines Gp-Return
09***90Clamp; (Hose) (26-39mm Id)10
14***70Hose2
14***71Hose2
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164-0001 Lines Gp-Stick Cylinder
16***52Tube As2
16***53Hose As2
16***01Lines Group-Stick Cylinder1
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163-6952 Lines Gp-Swing Motor
16***52Lines Group-Swing Motor1
17***24Hose As1
17***25Hose As1
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163-6951 Lines Gp-Travel Motor
09***85Tape-Color; (Red)4
14***20Grommet4
15***33Swivel Group1
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163-6976 Lines Gp-Work Tool
09***90Clamp, Single4
14***40Bracket1
14***36Bracket1
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144-5986 Manifold Gp-Control
09***19Seal-O-Ring (Id=15.80mm)2
09***22Bolt-Socket Head; (M5x0.8x10-mm)4
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)2
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163-6948 Motor & Mtg Gp-Swing
16***48Motor & Mtg Group-Swing1
17***21Motor Group-Swing1
8T***40Bolt-Plt; (M16 X 2.0 X 60)8
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171-0521 Motor Gp-Swing
09***19Ring-Retaining3
09***79Seal-O-Ring (Id=10.80mm)2
09***82Seal-O-Ring (Id=13.80mm)2
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171-0503 Motor Gp-Travel
09***74Seal-O-Ring (Id=6.8mm); (Id=6.80mm)1
09***80Seal-O-Ring (Id=11.80mm)2
09***90Seal-O-Ring (Id=21.80mm)2
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206-3927 Motor Gp-Travel
09***36Ring; (Retaining)1
15***23Block1
15***25Plate1
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163-6958 Pump & Mtg Gp-Piston & Gear
10***80Boss2
14***62Flange-Nylon1
15***03Hub1
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194-4630 Pump Gp-Gear
07***41Seal; (30.3mm Od)2
08***91Ring; (Square)2
09***78Seal-O-Ring (Id=9.80mm)1
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171-0492 Pump Gp-Piston & Gear
07***41Seal; (30.3mm Od)1
09***42Ring-Retaining1
09***43Seal-O-Ring1
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155-6933 Swivel Gp
09***23Seal-O-Ring (Id=79.60mm)1
09***13Seal-O-Ring; (Id=94.40mm)1
09***97Washer, Spring4
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163-6949 Tank Gp-Hydraulic
09***78Seal-O-Ring (Id=9.80mm)4
09***82Seal-O-Ring (Id=13.80mm)4
09***06Seal-O-Ring; (41.7mm Id )1
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163-7706 Valve & Mtg Gp-Bank
14***16Shim; (0.4-mm Thk)2
14***18Washer; (21x29x1-mm Thk)5
14***24Bushing2
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163-6956 Valve Gp-Bank
14***21Ring-Retaining5
14***09Link5
14***12Pin5
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171-0522 Valve Gp-Bank
14***71Spring3
14***72Seal13
14***73Bolt3
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207-0771 Valve Gp-Control
09***80Seal-O-Ring (Id=11.80mm)2
09***45Plug, Tapered3
09***95Pin, Dowel2
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166-8227 Valve Gp-Load Control
16***27Valve Group-Load Control; -Tilt Cylinder1
17***35Kit-Seal; (Load Control Valve)1
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163-7520 Valve Gp-Manual
09***76Seal-O-Ring1
09***85Seal- -O-Ring (17.80 mm Id)1
09***79Ring-Backup1
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164-2274 Valve Gp-Selector -Joystick Pattern
11***83Pin-Spring1
16***74Valve Group-Selector; -Joystick Pattern1
16***76Kit-Seal; (Select Valve)1
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143-2269 Valve Gp-Solenoid
09***19Seal-O-Ring (Id=15.80mm)1
09***22Bolt-Socket Head; (M5x0.8x10-mm)2
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
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Implements
169-1336 Boom Ar
16***70Cylinder Group-Boom1
16***71Cylinder Group-Swing Boom1
16***98Boom Group1
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163-9998 Boom Gp
14***63Cap2
14***80Washer; (10.5x32x3.2-mm Thk)1
14***66Bushing2
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168-8710 Bracket Gp-Mounting
16***10Bracket Group-Mounting1
16***11Bracket As1
7X***54Bolt; (M16x2x70-mm)8
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154-7823 Linkage Ar-Bucket
15***23Linkage Ar-Bucket1
16***72Cylinder Group-Bucket1
16***02Linkage Group-Bucket1
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164-0002 Linkage Gp-Bucket
14***41Shim; (1-mm Thk)4
14***68Bushing2
14***34Collar1
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204-4850 Linkage Gp-Bucket
09***29Seal-Lip Type6
14***41Shim; (1-mm Thk)6
14***68Bushing2
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204-4839 Linkage Gp-Bucket
09***29Seal-Lip Type2
09***30Seal-Lip Type4
14***41Shim; (1-mm Thk)4
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169-1325 Stick & Bearing As
14***66Bushing2
14***68Bushing2
14***04Bushing2
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164-0000 Stick Ar
16***00Stick Ar1
16***01Lines Group-Stick Cylinder1
17***45Cylinder Group-Stick1
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164-0005 Stick Ar
16***62Stick Group-Hoe1
16***05Stick Ar; -Long1
16***06Lines Group-Bucket Cylinder1
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163-7660 Stick Ar
16***60Stick Ar; -Standard1
16***61Lines Group-Bucket Cylinder1
16***13Stick Group-Hoe; -Standard1
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163-7662 Stick Gp-Hoe
14***66Bushing2
14***68Bushing2
14***34Collar2
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164-0013 Stick Gp-Hoe
09***30Seal-Lip Type2
14***66Bushing2
14***68Bushing2
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Lubrication System
202-2701 Filter Gp-Engine Oil
15***40Filter Element-Engine Oil; (Engine)1
15***36Washer4
15***79Stud-Hollow1
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Machine Arrangement
154-7803 Chassis Ar
14***76Lines Group-Grease1
15***03Chassis Ar1
15***05Hood Group1
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154-7810 Common Ar
15***02Operator Ar1
15***03Chassis Ar1
15***10Common Ar1
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Operator Station
165-2648 Cab Ar
14***14Filter Group-Cab Air1
16***47Washer Group-Window1
16***48Cab Ar1
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165-2700 Cab Gp-Enclosed Rops
14***36Wiring Group-Cab1
14***36Wiper Group-Window1
16***49Door Group-Cab1
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165-2704 Cab Gp-Enclosed Rops
10***43Seal; (32-cm Each)0
10***11Screw-Machine; (3/8-16x0.75-In)1
11***84Bumper2
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165-2660 Canopy Ar-Open Rops
16***58Mounting Group-Platform1
16***60Canopy Ar-Open Rops1
16***01Canopy Group-Open Rops1
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165-2701 Canopy Gp-Open Rops
14***37Wiring Group-Cab1
16***01Canopy Group-Open Rops1
16***03Canopy Group-Open Rops1
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165-2703 Canopy Gp-Open Rops
14***25Window1
14***68Plug10
15***50Handrail2
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163-7695 Console Gp-Operator
13***65Bushing-Plastic2
16***95Console Group-Operator; -Rh1
17***38Box As-Console1
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163-7696 Console Gp-Operator
11***77Latch As-Rotary; (Rh)1
13***65Bushing-Plastic2
14***05Link1
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149-3859 Control & Mtg Gp-Joystick
14***84Control Group-Joystick; -Lh1
14***85Control Group-Joystick; -Rh1
14***59Control & Mtg Group-Joystick1
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158-5744 Control Gp-Blade
14***80Cable As1
15***44Control Group-Blade1
17***60Rod End1
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158-5729 Control Gp-Hydraulic Hand
09***32Knob; (Lh Travel Lever)1
09***33Knob; (Rh Travel Lever)1
12***40Boot2
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144-5984 Control Gp-Joystick
14***84Control Group-Joystick; -Lh1
15***39Handle-Lh1
15***41Lever1
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144-5985 Control Gp-Joystick
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
12***52Kit-Cap1
14***85Control Group-Joystick; -Rh1
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199-5996 Door Gp-Cab
14***47Ring-Retaining2
14***48Pin2
14***54Hinge As4
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165-2649 Door Gp-Cab
14***47Ring-Retaining1
14***48Pin1
14***52Glass1
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147-3314 Filter Gp-Cab Air
14***88Filter Element-Cab Air; (Air)1
14***89Housing-Filter1
14***14Filter Group-Cab Air1
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203-2311 Gauge Gp-Cluster
09***78Screw; (Pan Head)2
10***01Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge)1
14***57Knob1
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176-5530 Guard & Mtg Gp-Cab
17***53Guard Group-Cab1
17***30Guard & Mtg Group-Cab; -Front Glass1
5P***76Washer Guard To Support Assembly And Guard Assembly6
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176-5531 Guard Gp-Cab
17***52Guard Group-Cab; (Front Screen)1
17***31Guard Group-Cab; -Front Screen1
5P***76Washer Guard To Support Assembly And Guard Assembly4
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176-1353 Guard Gp-Cab
17***53Guard Group-Cab1
17***55Glass; (Bottom)1
17***56Glass; (Top)1
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192-5485 Heater & Mtg Gp-Cab
14***35Heater Group-Cab1
19***85Heater & Mtg Group-Cab1
5D***26Clamp-Band; (9/16 To 1 1/16)2
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146-6335 Heater Gp-Cab
10***55Housing-Switch; (Lights)1
11***99Gasket; (Air Conditioner Control)1
11***19Switch As-Rocker; (Blower Fan Speed)(Heater Fan)1
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146-6387 Heater Gp-Cab
14***70Clip8
14***73Coil As1
14***74Valve As1
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149-7851 Installation Gp-Radio
10***81Cable As-Coaxial1
14***51Installation Group-Radio1
17***75Installation Group-Radio1
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165-2706 Liner Gp-Cab
14***43Hook-Coat1
14***25Cover1
16***34Cover1
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165-2705 Liner Gp-Cab
10***55Cover-Speaker1
12***51Screw-Pan Head4
13***13Nut; (M4x0.7-Thd)4
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163-7632 Lines Gp-Heater
09***79Tape-Color; (White)2
16***32Lines Group-Heater1
1L***79Elbow-Pipe; (3/8 In Pipe)1
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178-9525 Mirror Gp-Rear View
17***25Mirror Group-Rear View; -Lh1
18***78Mirror Group-Rear View1
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183-3883 Mirror Gp-Rear View
13***66Mirror Group-Rear View1
18***83Mirror Group-Rear View1
5P***16Washer; (Hard) (8.8x20.5x2mm Thk)2
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183-3878 Mirror Gp-Rear View
13***66Mirror Group-Rear View1
18***78Mirror Group-Rear View1
6R***89Bracket-Mounting1
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178-9526 Mirror Gp-Rear View
17***26Mirror Group-Rear View; -Rh1
18***83Mirror Group-Rear View1
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146-6431 Motor Gp-Window Wiper
10***05Kit-Receptacle; (6-Pin)(Display Monitor Harness)1
14***31Motor Group-Window Wiper; -12-Volt1
3E***83Wedge-Receptacle Lock; (6-Pin)1
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165-2659 Mounting Gp-Cab
09***59Bolt; (M14x2x60-mm)4
11***76Seal; (5.5-cm Each)0
14***95Mount As4
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172-2137 Mounting Gp-Control
09***30Pin, Spring1
14***24Bushing2
17***97Bracket As1
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165-2658 Mounting Gp-Platform
09***59Bolt; (M14x2x60-mm)4
14***96Lock Pin2
16***41Plate As1
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154-7802 Operator Ar
15***02Operator Ar1
15***15Platform Group1
15***29Control Group-Hydraulic Hand1
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172-0706 Pedal Gp-Foot
12***58Pedal-Rubber2
13***93Collar2
13***30Bushing2
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148-5165 Pedal Gp-Foot
14***65Pedal Group-Foot1
14***82Pedal As1
14***84Pedal As1
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154-7815 Platform Gp
13***41Hinge2
14***95Grommet1
15***15Platform Group1
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191-2023 Seat Belt Gp
16***54Spacer2
19***23Seat Belt Group1
8S***34Locknut; (Flange) (7/16-20 Thd)2
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191-2022 Seat Belt Gp
16***54Spacer2
19***22Seat Belt Group1
8S***34Locknut; (Flange) (7/16-20 Thd)2
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200-8084 Seat Belt Gp
0T***44Bolt (1.25" Long)2
20***84Seat Belt Group1
7X***07Washer-Hard; (12x22.5x5-mm Thk)2
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200-8085 Seat Belt Gp
0T***44Bolt (1.25" Long)2
20***85Seat Belt Group1
7X***07Washer-Hard; (12x22.5x5-mm Thk)2
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165-0231 Seat Gp
16***31Seat Group1
16***33Seat Group-Suspension1
8T***24Washer-To Assemble Valve As And Plates6
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165-0232 Seat Gp
16***32Seat Group1
16***35Seat Group-Suspension; -Vinyl1
8T***24Washer-To Assemble Valve As And Plates6
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165-0235 Seat Gp-Suspension
15***11Kit-Spring; (Adjustable Seat)1
15***12Kit-Cushion; (Adjustable Seat)1
15***15Kit-Damper; (Adjustable Seat)1
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165-0233 Seat Gp-Suspension
15***11Kit-Spring; (Adjustable Seat)1
15***13Kit-Cushion; (Adjustable Seat)1
15***15Kit-Damper; (Adjustable Seat)1
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158-5731 Support Gp-Seat
0L***13Nut-Special; (1/2unf)2
10***56Plug; (Switch)3
14***80Box-Console1
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163-7694 Support Gp-Seat
10***08Bumper; (Conical)1
13***52Shaft As2
14***76Cylinder As-Gas1
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150-9292 Tank Gp-Window Washer
15***92Tank Group-Window Washer1
15***00Pump As1
15***01Cap1
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165-2647 Washer Gp-Window
11***99Gasket; (Air Conditioner Control)1
12***36Connector1
15***92Tank Group-Window Washer1
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174-7777 Window Gp-Cab
14***87Cushion2
15***45Guide-Lh2
15***46Guide-Rh2
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174-7776 Window Gp-Cab
09***33Bolt-Socket Head; (M5x0.8x20-mm)2
13***70Seal; (326-cm)0
13***85Rivet-Pop2
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146-6436 Wiper Gp-Window
10***02Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness)1
13***94Nozzle As-Washer1
14***46Clip1
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Power Train
199-5148 Drive Gp-Final
09***75Seal - O-Ring (7.80 mm Id)1
09***80Seal-O-Ring (Id=11.80mm)2
09***82Seal-O-Ring (Id=13.80mm)3
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206-3926 Final Drive Gp
09***75Seal - O-Ring (7.80 mm Id)1
09***82Seal-O-Ring (Id=13.80mm)3
09***89Seal-O-Ring1
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163-6947 Motor & Mtg Gp-Travel
08***68Bolt; (M14x2x40-mm)18
16***47Motor & Mtg Group-Travel1
19***48Drive Group-Final2
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154-7822 Power Train Ar
15***22Power Train Ar1
16***47Motor & Mtg Group-Travel1
16***48Motor & Mtg Group-Swing1
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163-9997 Sprocket Gp
08***68Bolt; (M14x2x40-mm)9
15***95Sprocket1
16***97Sprocket Group1
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Service Equipment And Supplies
185-3338 Film Gp
13***30Film-Stripe; (Stripe)(218cm)0
18***41Film; (304.5)1
18***38Film Group; -Canopy1
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185-2739 Film Gp
13***52Film-Identification; (Cat, Rh)1
13***30Film-Stripe; (Stripe)(218cm)0
13***11Film-Cat; (Cat, Lh)1
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185-3339 Film Gp
12***73Film-Identification; (Caterpillar)1
13***30Film-Stripe; (Stripe)(218cm)0
18***39Film Group; -Canopy1
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185-2626 Film Gp
12***73Film-Identification; (Caterpillar)1
13***30Film-Stripe; (Stripe)(218cm)0
18***26Film Group; -Cab1
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175-4846 Plate & Film Gp
12***42Film-Warning; (Hot Fluid Under Pressure)1
15***22Film-Warning; (Universal)1
15***99Film-Warning; (Cable Connection)1
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165-6300 Plate & Film Gp
13***58Film; (Identification) (On Radiator Filler Cap) (On Near Of Radiator Filler Cap)1
15***79Plate-Identification; (Circuit Breaker)1
15***84Film-Instruction; (Blade)1
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175-4841 Plate & Film Gp
12***06Film-Warning; (Next To Radiator Fill Cap)1
15***37Film-Warning; (Read Omm, Qcplr, Radio, Ether)1
15***30Film-Warning; (Cable Connection)1
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175-4843 Plate & Film Gp
12***39Film-Warning; (Hot Fluid Under Pressure)1
15***16Film-Warning; (Machine Operation)(Universal)1
15***95Film-Warning; (Cable Connection)1
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175-4845 Plate & Film Gp
12***45Film-Warning; (Hot Fluid Under Pressure)1
15***25Film-Warning; (Universal)1
15***01Film-Warning; (Cable Connection)1
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175-4850 Plate & Film Gp
10***62Film-Warning; (Clearance)1
13***91Film-Warning; (Hot Fluid Under Pressure)1
15***30Film-Warning; (Universal)1
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175-4847 Plate & Film Gp
15***82Film-Warning; (Hot Fluid Under Pressure)1
16***00Plate & Film Group1
17***46Film-Warning; (Clearance)1
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175-4848 Plate & Film Gp
12***43Film-Warning; (Hot Fluid Under Pressure)1
15***20Film-Warning; (Machine Operation)(Universal)1
15***97Film-Warning; (Cable Connection)1
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175-4838 Plate & Film Gp
14***65Film-Warning; (Hot Fluid Under Pressure)1
16***00Plate & Film Group1
17***44Film-Warning; (Clearance)1
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175-4849 Plate & Film Gp
12***40Film-Warning; (Hot Fluid Under Pressure)1
15***18Film-Warning; (Machine Operation)(Universal)1
15***96Film-Warning; (Cable Connection)1
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175-4844 Plate & Film Gp
12***41Film-Warning; (Hot Fluid Under Pressure)1
15***21Film-Warning; (Universal)1
15***98Film-Warning; (Cable Connection)1
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175-4837 Plate & Film Gp
13***88Film-Warning; (Hot Fluid Under Pressure)1
15***27Film-Warning; (Universal)1
15***03Film-Warning; (Cable Connection)1
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175-4839 Plate & Film Gp
12***46Film-Warning; (Hot Fluid Under Pressure)1
15***23Film-Warning; (Universal)1
15***00Film-Warning; (Cable Connection)1
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175-4840 Plate & Film Gp
12***44Film-Warning; (Hot Fluid Under Pressure)1
15***26Film-Warning; (Universal)1
15***02Film-Warning; (Cable Connection)1
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175-4842 Plate & Film Gp
10***45Film-Warning; (Clearance)1
13***90Film-Warning; (Hot Fluid Under Pressure)1
15***40Film-Warning; (Universal)1
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154-7808 Plate & Film Gp
12***29Film; (Accum, High Press, Read Omm)1
15***08Plate & Film Group1
19***56Plate; (Product Identification)1
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Undercarriage
185-9232 Cylinder Gp-Idler -Lh
09***04Seal-O-Ring (Id=39.70mm)1
09***94Ring-Backup1
12***63Piston1
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185-9233 Cylinder Gp-Idler -Rh
09***04Seal-O-Ring (Id=39.70mm)1
09***94Ring-Backup1
12***63Piston1
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154-7818 Frame Gp-Undercarriage
15***86Frame As-Undercarriage1
15***87Cover As2
15***88Cover1
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163-9996 Gear & Bearing Gp-Swing
14***86Dowel1
16***69Plate As1
16***96Gear & Bearing Group-Swing1
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154-7820 Idler Gp-Front
15***81Spring Group-Recoil2
15***27Idler Group-Front; -Lh1
15***28Idler Group-Front; -Rh1
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154-2227 Idler Gp-Front -Lh
09***95Seal-O-Ring (Id=27.70mm)2
09***04Seal-O-Ring (Id=39.70mm)1
09***94Ring-Backup1
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154-2228 Idler Gp-Front -Rh
09***95Seal-O-Ring (Id=27.70mm)2
09***04Seal-O-Ring (Id=39.70mm)1
09***94Ring-Backup1
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218-4685 Idler Gp-Front -Lh
09***95Seal-O-Ring (Id=27.70mm)2
15***30Shaft1
15***31Support-Lh1
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218-4686 Idler Gp-Front -Rh
09***95Seal-O-Ring (Id=27.70mm)2
15***30Shaft1
15***31Support-Lh1
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158-4766 Link As-Track
15***66Link As-Track1
15***67Link-Track; (Rh)37
15***68Link-Track; (Lh)37
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154-7821 Roller Gp-Track
15***21Roller Group-Track1
17***64Roller As2
34***57Roller Group-Track-Center Flange10
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340-8957 Roller Gp-Track-Center Flange
15***13Seal-O-Ring2
15***14Bushing2
23***62Ring-Retaining2
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150-1081 Spring Gp-Recoil
12***36Nut; (M30x3-Thd)1
15***81Spring Group-Recoil1
15***82Spring1
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153-5984 Track Gp
14***13Guard As; (Lh)2
14***14Guard As; (Rh)2
15***84Track Group; -Steel1
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163-7659 Track Gp
15***81Track; (Rubber)2
16***59Track Group1
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155-6844 Track Gp
15***44Track Group1
15***66Link As-Track1
15***75Bolt; (M12x1.25x38-mm)152
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154-7817 Undercarriage Ar
15***17Undercarriage Ar1
15***18Frame Group-Undercarriage1
15***20Idler Group-Front1
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Work Tools
164-0003 Blade & Mounting Gp
14***43Seal-Dust4
14***34Collar4
14***40Bushing2
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154-7825 Blade Ar
15***25Blade Ar1
15***26Lines Group-Blade1
15***44Control Group-Blade1
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213-9634 Bucket Ar-General Purpose
13***06Tooth Group-Uni4
21***34Bucket Ar-General Purpose1
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213-9635 Bucket Ar-General Purpose
13***06Tooth Group-Uni4
21***35Bucket Ar-General Purpose1
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213-9633 Bucket Ar-General Purpose
13***06Tooth Group-Uni4
21***33Bucket Ar-General Purpose1
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188-4371 Bucket Ar-General Purpose
10***88Ring-Retaining4
18***27Bucket As-General Purpose1
18***67Pin2
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213-9632 Bucket Ar-General Purpose
13***06Tooth Group-Uni3
21***32Bucket Ar-General Purpose1
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180-3624 Bucket Ar-General Purpose
13***06Tooth Group-Uni4
18***24Bucket Ar-General Purpose1
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214-2152 Bucket Ar-General Purpose
13***06Tooth Group-Uni3
21***52Bucket Ar-General Purpose1
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213-9631 Bucket Ar-General Purpose
13***06Tooth Group-Uni3
21***70Pin As2
21***31Bucket Ar-General Purpose1
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180-3625 Bucket Ar-General Purpose
13***06Tooth Group-Uni4
18***25Bucket Ar-General Purpose1
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180-3622 Bucket Ar-General Purpose
13***06Tooth Group-Uni3
18***22Bucket Ar-General Purpose1
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180-3623 Bucket Ar-General Purpose
13***06Tooth Group-Uni3
18***23Bucket Ar-General Purpose1
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180-3626 Bucket Ar-General Purpose
13***06Tooth Group-Uni4
18***26Bucket Ar-General Purpose1
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213-9636 Bucket Ar-General Purpose
13***06Tooth Group-Uni4
21***36Bucket Ar-General Purpose1
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188-4369 Bucket Ar-General Purpose
18***22Bucket Ar-General Purpose1
18***69Bucket Ar-General Purpose1
21***70Pin As2
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180-1356 Bucket As-Ditch Cleaning
180-1355 Bucket As-Ditch Cleaning
180-1357 Bucket As-Ditch Cleaning
227-7270 Bucket Gp-Trenching
13***06Tooth Group-Uni5
22***70Bucket Group-Trenching1
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227-7268 Bucket Gp-Trenching
13***06Tooth Group-Uni4
22***68Bucket Group-Trenching1
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180-8534 Coupler Gp-Quick
18***34Coupler Group-Quick1
18***35Coupler1
18***36Follower1
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180-8533 Coupler Gp-Quick
17***17Shim; (1-mm Thk)4
17***18Shim; (0.5-mm Thk)4
18***33Coupler Group-Quick1
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184-4225 Lock Gp-Pin
09***81Pin-Spring1
17***42Boss As1
17***50Knob1
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184-4224 Lock Gp-Pin
09***81Pin-Spring1
17***50Knob1
17***52Shim; (2.0-mm Thk)1
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154-2653 Mounting Gp-Bucket
15***53Mounting Group-Bucket1
18***84Pin2
3B***89Fitting-Grease; (Fan And Alternator Drive)2
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188-4380 Mounting Gp-Bucket
18***84Pin2
18***80Mounting Group-Bucket1
3B***89Fitting-Grease; (Fan And Alternator Drive)2
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135-8206 Tooth Gp-Uni
13***03Tooth-Uni1
13***06Tooth Group-Uni1
4F***57Bolt-Plow; (5/8-11x2.75-In)2
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304.5 serial number reference

The PIN plate is a durable metal identification plate usually riveted to the machine frame, often on the right-hand side below the cab or near the boom base. To read it, identify the 3-character alphanumeric prefix followed by the sequence ID; for models built after 2001, the last 8 characters of the 17-character PIN represent the serial number.

PrefixIdentifies
304304E2 XTC / E2 Series
304.5304.5 / 304.5E2

Frequently asked questions

What engine is used in the Caterpillar 304.5?

The Caterpillar 304.5 is equipped with a 3013 engine model, providing 38 hp (28 kW) net power.

What is the operating weight of this machine?

The operating weight varies by configuration; it is approximately 4,475 kg (9,866 lb) for standard models and up to 4,595 kg (10,130 lb) when equipped with a cab.

What replaced the Caterpillar 304.5?

The provided documentation does not explicitly state which specific model directly replaced the 304.5, though it lists the 304.5 as part of a non-current product lineup.

What 304.5 owners discuss

What are the known hydraulic performance issues when operating both tracks simultaneously on a 304CR model?
Operators have reported that 304CR tracks may run slow or weak when both tracks are operated simultaneously.
What specific maintenance concern is noted regarding quick coupler hose routing on this machine type?
The quick coupler hose routing can allow hoses to be pinched, which leads to fluid seepage during bucket changes.
What are the common causes for hydraulic leaks found near the machine's O-rings?
Leaks have been attributed to improperly installed O-rings that were squished during installation.
Which engine model is used in the Caterpillar 304.5 mini excavator?
The 304.5 utilizes the 3013 engine model.
What undercarriage configuration is recommended for use on finished surfaces like blacktop?
Rubber-belted tracks are used when operating on blacktop or other finished surfaces to reduce damage.
What should be checked when inspecting a used 304.5 for potential hydraulic cylinder failure?
Inspect the machine for signs of defective hydraulic cylinders; have your dealer verify the condition via professional inspection.

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

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