Caterpillar 935C II
Caterpillartrack-type loadertrack loader

Caterpillar 935C II

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar 935C II is a crawler loader designed for heavy-duty earthmoving and material handling. This machine features a Caterpillar 3204 engine delivering 80 hp (59.7 kW) of net power. It operates within an operating weight range of approximately 19,310.3 lb (8759 kg). The series is characterized by its three-speed forward and one-speed reverse transmission and standard features such as pedal steer and sealed, lubricated tracks (SALT).

The 935C II represents a specific evolutionary step in the 935 lineage, produced between 1990 and 1993. It succeeded the 935B, which utilized a lower horsepower 3204 configuration. In today's used equipment market, this model remains a significant asset due to its robust undercarriage design and the availability of Caterpillar 3204 engine components. Its durability makes it a frequent choice for secondary applications where high-capacity modern machines are not required.

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 935C II specifications

Engine

Engine Model3204
Net Power80 hp (59.7 kW)
Displacement317.4 cu in (5.2 L)

Weights

Operating Weight19,310.3 lb (8,759 kg)
Static Tipping Load12,795.7 lb (5,804 kg)

Dimensions

Length With Bucket On Ground14.17 ft in (4,318 mm)
Width To Outside Of Tracks5.84 ft in (1,780 mm)
Height To Top Of Cab8.8 ft in (2,680 mm)
Ground Clearance1.03 ft in (312 mm)
Clearance At Full Height And Dump8.48 ft in (2,583 mm)
Reach At Dump Height2.85 ft in (866 mm)
Track Gauge55.91 in (1,420 mm)
Track Shoe Width13.98 in (355 mm)
Length Of Track On Ground6.24 ft in (1,900 mm)

Performance

Max Speed10.5 km/h (6.6 mph)
Ground Pressure8.56 psi (59 kPa)
Breakout Force - Std Bucket15,098 lb (67.2 kN)

Blades/Buckets

Bucket Capacity - Struck1.1 yd3 (0.9 m3)
Bucket Capacity - Heaped1.4 yd3 (1 m3)

Service Capacities

Fuel Capacity116 L (30.7 gal)
Hydraulic System Fluid Capacity15.1 gal (57 L)

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

935C II fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (w/ filter)Cat DEO/Motor Oil
Cooling system
Fuel tank30.6 gal (116 L) to 30.7 gal (116 L)
Transmission/powertrain (powershift transmission + bevel gear/steering compartments)Power train oil
Final drives (each)
Hydraulic system/tank15.1 gal (57 L)Cat HYDO Advanced Oils
Grease

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

Caterpillar 935C II 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
  • Inspect track tension and shoe condition
  • Check for visible fluid leaks under machine
Every 250 h
  • Change engine oil and filter
  • Grease all pivot points, boom, and bucket
  • Inspect air filter primary element
  • Check belt and hose condition
  • Perform visual inspection of machine
Every 500 h
  • Replace fuel filter
  • Replace hydraulic return filter
  • Perform battery service and terminal check
  • Conduct detailed undercarriage inspection
  • Test coolant additive/SCA levels
Every 1,000 h
  • Perform hydraulic oil sample analysis (S.O.S)
  • Inspect turbocharger for wear
  • Check torque on ROPS bolts
  • Measure undercarriage component wear
Every 2,000 h
  • Change hydraulic system oil
  • Perform coolant flush and replacement
  • Service transmission system
  • Conduct comprehensive structural inspection
  • Evaluate major machine components

Servicing the 935C II beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize Cat S.O.S Services to monitor engine oil, hydraulic fluid, and coolant. Analyzing wear metals like iron or copper and detecting contaminants such as silicon (dirt) or sodium (coolant) allows for early detection of component fatigue. Regular hydraulic oil sampling is critical during 1000-hour intervals to identify particle counts and oxidation levels before pump or valve failure occurs.

Corrective & Common Repairs

Monitor hydraulic hoses for cracks, abrasion, or leaks to prevent sudden pressure loss. Frequent inspections of pins, bushings, and attachment points are necessary to address wear in the loader linkage. If hydraulic return filters clog, replace them immediately to avoid damage to the pump and control valves. Ensure all track shoes and pads remain secure to prevent undercarriage instability.

Overhaul & Rebuild Points

Major component evaluation should be a priority during 2000-hour service intervals. Focus on the turbocharger, transmission, and hydraulic system integrity. When measuring undercarriage wear at 1000-hour intervals, prepare for sprocket or roller replacement if limits are exceeded. A complete hydraulic oil change and coolant flush at 2000 hours is essential to prevent internal engine corrosion and system degradation.

Seasonal & Environment Servicing

In high-dust or quarry environments, check the air filter daily and consider replacing it every 500 hours instead of the standard interval. Clean radiator and oil cooler fins daily to prevent overheating. For machines operating in extreme temperatures, monitor coolant integrity and ensure the fuel/water separator is drained frequently to prevent moisture-related fuel system issues.

935C II common service parts

Part numberPart
6V-2219Kit-GasketCheck fitment →

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935C II fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
110-0Engine Coolant Temperature — Above NormalLow coolant level or thermostat failureInspect cooling system and refill coolant
110-3Engine Coolant Temp Sensor — Voltage HighOpen circuit or sensor failureCheck wiring harness and replace sensor if faulty
174-3Engine Fuel Temperature — Voltage Above NormalOpen circuit in sensor wiringInspect fuel temperature sensor harness and replace sensor if necessary
190-8Engine Speed — Abnormal FrequencySpeed sensor air gap, sensor failure, or tone ring damageCheck sensor gap and test speed sensor/tone ring integrity
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.

935C II attachments & work tools

Blades

Standard configuration includes a front loader bucket with 1.1 yd³ (0.84 m³) struck capacity and 1.4 yd³ (1.07 m³) heaped capacity. Specific blade types such as S, SU, A, or VPAT are not documented for this model.

Rippers

The hydraulic valve group supports lift, tilt, and ripper functions. Specific single-shank versus multi-shank weight or configuration details are not documented.

Cab/ROPS guarding options

The machine features a ROPS structure and an optional guard group for vandalism protection. A heater group is available as part of the ROPS enclosure attachment.

Hydraulic arrangement notes

Hydraulic valve groups are available in 3-valve (lift, tilt, ripper) and 4-valve (lift, tilt, multi-purpose bucket, and ripper) configurations. Recommended fluid is Cat HYDO Advanced Oil.

All 935C II assemblies by section

Every catalogued assembly group for the Caterpillar 935C II. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Air Inlet And Exhaust System
7w8764 Air Cleaner Gp
7w8765 Air Cleaner Gp
7e0831 Extension Gp-Exhaust
1w5054 Lines Gp-Air
1W***54Lines Group-Air; Air Lines Group1
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7n4971 Manifold Gp-Exhaust
7N***71Manifold Group-Exhaust; Exhaust Manifold Group1
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7n4970 Muffler Gp
5m2735 Prescreener Gp
5M***35Prescreener Group; Prescreener Group----------------------.1
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Basic Engine
6n2393 Camshaft Gp-Single
6N***93Camshaft Group-Single; Camshaft Group-Single1
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2w7486 Cover Gp-Valve Mechanism
2W***86Cover Group-Valve Mechanism; Valve Mechanism Cover Group1
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7w3926 Crankshaft Gp
7W***26Crankshaft Group; Crankshaft Group1
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2w7902 Cylinder Block As
1w4327 Cylinder Block As
1w4326 Cylinder Block Gp
1W***26Cylinder Block Group; Cylinder Block Group1
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7w9390 Cylinder Head As
7c3805 Cylinder Head As*R
7c2296 Cylinder Head As
7w9392 Cylinder Head Gp*R
6n2467 Cylinder Head Gp*R
6N***67Cylinder Head Group; Cylinder Head Group1
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7n5141 Drive Gp-Fan
7N***41Drive Group-Fan; Water Pump Drive Group1
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7n6937 Flywheel Gp
1w1355 Gear Gp-Front
1W***55Gear Group-Front; Front Gear Group1
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7n6344 Housing Gp-Flywheel
7N***44Housing Group-Flywheel; Flywheel Housing Group1
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2w4384 Housing Gp-Front
2W***84Housing Group-Front; Front Housing Group1
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1w5554 Lifting Gp
6n8370 Pan Gp-Oil
8n4079 Piston & Rod Gp
8N***79Piston & Rod Group; Connecting Rod And Piston Group1
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2w8419 Piston Gp
7n5138 Pulley Gp-Crankshaft
7N***38Pulley Group-Crankshaft; Auxiliary Drive Pulley Group1
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7c7743 Support Gp-Engine & Transmission
1w5720 Valve Mechanism Gp
1W***20Valve Mechanism Group; Valve Mechanism Group1
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Cooling System
9n5659 Cooler Gp-Engine Oil
7c7744 Cooler Gp-Engine Oil
8y2535 Cooler Gp-Hydraulic Oil
7n9989 Fan Gp-Blower
4n2220 Fan Gp-Suction
4N***20Fan Group-Suction; Suction Fan Group1
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6n9739 Heater Gp-Jacket Water (750 Watt, 120 Volt)
6N***39Heater Group-Jacket Water; Jacket Water Heater Group1
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6n9125 Heater Gp-Jacket Water (750 Watt, 120 Volt)
4n0188 Lines Gp-Water
4N***88Lines Group-Water; Water Lines Group1
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4n0660 Pump Gp-Water
4N***60Pump Group-Water; Water Pump Group1
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7c7740 Radiator Gp
7c7741 Radiator Gp
Electrical System
1w4263 Alternator Gp-Charging
7n4784 Alternator Gp-Charging
8n2822 Alternator Gp-Charging
6V***78Nut; (10-32-Thd)2
8F***34Lockwasher; (External Teeth)2
8N***68Alternator Group-Charging1
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8n2268 Alternator Gp-Charging
8y5048 Battery & Wiring Gp-Part 1 Of 2
8y5048 Battery & Wiring Gp-Part 2 Of 2
6s3548 Battery Gp
9x7779 Lamp Gp-Flood
9X***79Lamp Group-Flood; -Roading Lights1
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9x9069 Lamp Gp-Flood
8y5070 Lighting Gp-3 Lamp
8y7146 Lighting Gp-3 Lamp
5g2541 Starting Aid Gp-Ether
4n0190 Starting Motor Gp-Electric
4N***90Starting Motor Group-Electric; Electric Starting Motor Group1
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3e1865 Starting Motor Gp-Electric
9x0354 Starting Motor Gp-Electric
9g5517 Switch As
8n0410 Switch Gp
9g7641 Switch Gp-Start
9G***41Switch Group-Start; -Engine, Key-Vims Service1
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8y5059 Warning Gp-Back-Up
Engine Arrangement
4p0911 Engine Ar-Part 1 Of 2
1N***24Filter Group-Oil; Oil Filter Group1
1W***67Gauge Group-Oil Level (Dipstick)1
1W***55Gear Group-Front; Front Gear Group1
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4p0911 Engine Ar-Part 2 Of 2
1W***54Lines Group-Fuel Injection; Fuel Injection Lines Group1
1W***54Lines Group-Air; Air Lines Group1
1W***54Lifting Group1
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Final Drive
8y0234 Final Drive Gp
6y2047 Segment Gp-Sprocket
Frame And Body
8y6570 Guard Gp-Brush
8Y***70Guard Group-Brush; Guard Gp-Brush1
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5g0796 Counterweight Gp
5g0797 Counterweight Gp
8y5650 Counterweight Gp
8y6123 Counterweight Gp
8y5644 Counterweight Gp-Front
5g0779 Drawbar Gp
8y2825 Frame Gp-Loader
5g1185 Guard Gp-Bottom
8y5039 Guard Gp-Radiator
8y5060 Hood & Guard Gp
6s3864 Hook Gp-Front Pull
8y5077 Sweep Gp
Fuel System
2w0262 Camshaft As
5g3612 Cap Gp-Protection-Fuel Tank
5G***12Cap Group-Protection; Fuel Filler Protection Cap Group1
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5g4866 Control Gp-Governor & Transmission
5G***66Control Group-Gov & Transmission1
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8y5035 Control Gp-Governor
7e3734 Filter Gp-Fuel
1w8730 Governor Gp
5g4583 Lines Gp-Fuel
7n0042 Lines Gp-Fuel Injection
1w1354 Lines Gp-Fuel Injection
1W***54Lines Group-Fuel Injection; Fuel Injection Lines Group1
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1w6539 Pump Gp-Fuel Injection
2w0263 Pump Gp-Fuel Injection
4n4314 Pump Gp-Fuel Priming
4N***14Pump Group-Fuel Priming; Fuel Priming Pump Group1
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1w0568 Pump Gp-Fuel Transfer
1006406 Pump Gp-Fuel Transfer
2w6309 Pump Gp-Fuel Transfer
2w4403 Pump Gp-Fuel Transfer
2W***03Pump Group-Fuel Transfer; Fuel Transfer Pump Group1
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7w0189 Govenor & Fuel Injection Pump Gp
7W***89Pump Group-Gov & Fuel Inj; Governor & Fuel Injection Pump Group1
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8y5045 Tank Gp-Fuel
4w5063 Torque Control Gp
Hydraulic System
5g1136 Brace Gp-Lift Cylinder
5G***36Brace Group-Lift Cylinder; Lift Cylinder Brace Group1
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5g0331 Control Gp-Hydraulic Hand
5g0332 Control Gp-Hydraulic Hand-Front
5g0333 Control Gp-Hydraulic Hand-Ripper
5G***33Control Group-Hydraulic Hand; Hydraulic Hand Control Group-Ripper1
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6y2216 Control Gp-Winch
6e0214 Cylinder Gp-Lift-Lh (Chg 00)
6E***14Cylinder Group; Cylinder Gp-Lift-Lh1
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6e0212 Cylinder Gp-Lift-Rh (Chg 00)
6E***12Cylinder Group; Cylinder Gp-Lift-Rh1
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5g3446 Cylinder Gp-Slider Lock
5G***46Cylinder Group; Slider Lock Cylinder Group1
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3g5767 Cylinder Gp-Backhoe Boom (Chgs 03-05)
3g5905 Cylinder Gp-Backhoe Bucket (Chg 05)
1u2655 Cylinder Gp-Backhoe Stabilizer-Rh (Chgs 00-03)
1U***55Cylinder Group-Backhoe Stabilizer; Cylinder Gp-Backhoe Stabilizer-R.H1
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1u2656 Cylinder Gp-Backhoe Stabilizer-Lh (Chgs 00-03)
1U***56Cylinder Group-Backhoe Stabilizer; Cylinder Gp-Backhoe Stabilizer-L.H1
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3g5771 Cylinder Gp-Backhoe Stick (Chg 04)
3g7365 Cylinder Gp-Multi-Purpose Bucket (Chgs 01-03)
3G***65Cylinder Group-Bucket; Cylinder Gp-Multi-Purpose Bucket1
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7j5893 Cylinder Gp-Lift-Rh (Chgs 07-09)
7j5894 Cylinder Gp-Lift-Lh (Chgs 07-09)
7j9920 Cylinder Gp-Ripper (Chg 08)
3g6792 Cylinder Gp-Stabilizer (Chgs 01-02)
3G***92Cylinder Group-Stabilizer; Stabilizer Cylinder Group1
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4t0963 Cylinder Gp-Tilt (Chgs 01-02)
5g2341 Gauge Gp-Hydraulic Oil Temperature
5G***41Gauge Group-Hydraulic Oil Temp; Hydraulic Oil Temperature Gauge Group1
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8y5072 Hydraulic Ar-3 Valve
5G***33Control Group-Hydraulic Hand; Hydraulic Hand Control Group-Ripper1
5G***43Lines Group-Rear Attachment; Lines Gp-Rear Attachment-Ripper1
6E***55Valve Group-Bank; Valve Gp-Bank 31
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8y5073 Hydraulic Ar-4 Valve
5G***32Control Group-Hydraulic Hand1
5G***33Control Group-Hydraulic Hand; Hydraulic Hand Control Group-Ripper1
5G***43Lines Group-Rear Attachment; Lines Gp-Rear Attachment-Ripper1
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8y5071 Hydraulic Ar-3 Valve
5G***32Control Group-Hydraulic Hand1
5G***50Mounting Group-Attachment; Mounting Gp-Attachment Lines1
5G***99Lines Group-Front; Lines Gp-Front-Mp Bucket1
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5g3529 Kickout & Positioner Gp-Bucket-Part 1 Of 2
5g3529 Kickout & Positioner Gp-Bucket-Part 2 Of 2
5g2612 Lines Gp-Boom Cylinder
5G***12Lines Group-Boom Cylinder; Boom Cylinder Lines Group1
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5g3669 Lines Gp-Boom Cylinder
5G***69Lines Group-Boom Cylinder; Room Cylinder Lines Group1
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5g3672 Lines Gp-Bucket Cylinder
5G***72Lines Group-Bucket Cylinder; Bucket Cylinder Lines Group1
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5g2619 Lines Gp-Bucket Cylinder
5G***19Lines Group-Bucket Cylinder; Bucket Cylinder Lines Group1
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5g9399 Lines Gp-Front-Hydraulic
5G***99Lines Group-Front; Lines Gp-Front-Mp Bucket1
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5g1652 Lines Gp-Hydraulic-Part 1 Of 2
5G***52Lines Group-Hydraulic; Hydraulic Lines Group1
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5g1652 Lines Gp-Hydraulic-Part 2 Of 2
5G***52Lines Group-Hydraulic; Hydraulic Lines Group1
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8y6782 Lines Gp-Hydraulic
5g5925 Lines Gp-Hydraulic-1 Circuit
5G***25Lines Group-Hydraulic; Lines Gp-Hydraulic-1 Circuit1
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5g0408 Lines Gp-Lift Cylinder
5g0443 Lines Gp-Pump
5g0543 Lines Gp-Rear
5G***43Lines Group-Rear Attachment; Lines Gp-Rear Attachment-Ripper1
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6s3559 Lines Gp-Ripper
6S***59Lines Group-Ripper; Ripper Lines Group1
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5g2216 Lines Gp-Stabilizer
5G***16Lines Group-Stabilizer; Stabilizer Lines Group1
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5g3682 Lines Gp-Stabilizer
5G***82Lines Group-Stabilizer; Lines Group-Stabilizer Cylinder1
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5g3675 Lines Gp-Stick
5G***75Lines Group-Stick; Stick Cylinder Lines Group1
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5g2618 Lines Gp-Stick
5G***18Lines Group-Stick; Stick Cylinder Lines Group1
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5g3679 Lines Gp-Swing Actuator
5G***79Lines Group-Swing Actuator; Swing Actuator Lines Group1
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5g2606 Lines Gp-Swing Actuator
5G***06Lines Group-Swing Actuator; Swing Actuator Lines Group1
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5g0407 Lines Gp-Tilt Cylinder
6y2111 Lines Gp-Winch
8y2272 Lock Gp-Hydraulic Hand Control
8Y***72Lock Group-Hydraulic Hand Control1
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6t2288 Manifold Gp-Filter Base & Pressure Control
5g8750 Mounting Gp-Attachment
5G***50Mounting Group-Attachment; Mounting Gp-Attachment Lines1
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6s5905 Mounting Gp-Cylinder
6S***05Mounting Group-Cylinder; Cylinder Mounting Group1
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5g2865 Pump & Lines Gp
5G***65Pump & Lines Group; Pump And Lines Group1
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5g8733 Pump & Lines Gp
2M***80Seal--To Connector Pump Outlet1
5G***80Pump & Lines Group; Pump & Lines Gp-Backhoe1
5G***33Pump & Lines Group1
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5g3774 Pump & Lines Gp
5g4580 Pump & Lines Gp-Backhoe
5G***80Pump & Lines Group; Pump & Lines Gp-Backhoe1
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8j4515 Pump Gp-Gear
8J***15Pump Group-Gear; Gear Pump Group-Tyrone1
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3g5046 Pump Gp-Gear
1u0414 Pump Gp-Gear
3g5386 Pump Gp-Gear
3G***86Pump Group-Gear; Gear Pump Group-Shimadzu Seisakusho1
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8j4514 Pump Gp-Gear
4t0384 Pump Gp-Piston
5g2987 Shield Gp-Heat
5G***87Shield Group-Heat; Shield Group--Heat1
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8y5317 Tank & Filter Gp-Hydraulic
8y5318 Tank Gp-Hydraulic
5g2582 Valve & Lines Gp
5G***82Valve & Lines Group; Valve And Lines Group1
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5g3692 Valve & Lines Gp
5G***92Valve & Lines Group; Lines And Valve Group--Sideshift Lock1
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5g3687 Valve & Lines Gp
5G***87Valve & Lines Group; Lines And Valves Group1
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8y5066 Valve & Mounting Gp
3g0777 Valve Gp-Control
6t2289 Valve Gp
6e2052 Valve Gp-Bank-2 Control Valve
6e2055 Valve Gp-Bank-3 Control Valve
6E***55Valve Group-Bank; Valve Gp-Bank 31
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6e2054 Valve Gp-Bank-3 Control Valve
6E***54Valve Group-Bank; Valve Gp-Bank 31
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1u2576 Valve Gp-Bank-6 Control Valve
6e2056 Valve Gp-Bank-4 Control Valve
6E***56Valve Group-Bank; Valve Gp-Bank 41
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6s4767 Valve Gp-Breaker Relief
8j9471 Valve Gp-Check
8J***71Valve Group-Check; -Lift Cylinder Circuit1
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6e3087 Valve Gp-Control (Auxiliary)
6e3086 Valve Gp-Control (Tilt)
6e3088 Valve Gp-Control (Auxiliary)
6s9822 Valve Gp-Control
1u4630 Valve Gp-Control
6e3085 Valve Gp-Control (Hoist)
3g0778 Valve Gp-Control
3G***78Valve Group-Control; (Rh Stabilizer)1
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3g2887 Valve Gp-Diverter
3G***87Valve Group-Diverter; -Towing, Parking Brake Release1
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6e3091 Valve Gp-Relief
4t2591 Valve Gp-Pitch Relief
6e3093 Valve Gp-Relief
6e3090 Valve Gp-Relief
6e3089 Valve Gp-Relief
6e3092 Valve Gp-Relief
9j0797 Valve Gp-Relief
9J***97Valve Group-Relief; (Pilot Operated)1
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9j0798 Valve Gp-Relief
6t2287 Valve Gp-Selector & Pressure Control
6T***87Valve Group-Selector & Press Cont1
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9t1076 Valve Gp-Servo
Implements
3y6885 Actuator Gp
4t0412 Actuator Gp-Rotary
3y6884 Actuator Gp-Rotary
5g2464 Actuator Gp-Swing
5G***64Actuator Group-Swing; Swing Actuator Group1
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5g3761 Actuator Gp-Swing
5G***61Actuator Group-Swing; Swing Actuator Group1
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5g2150 Backhoe Ar-Fixed Pivot
1U***55Cylinder Group-Backhoe Stabilizer; Cylinder Gp-Backhoe Stabilizer-R.H1
1U***56Cylinder Group-Backhoe Stabilizer; Cylinder Gp-Backhoe Stabilizer-L.H1
3G***67Cylinder Group-Backhoe Boom1
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5g3690 Backhoe Ar-Sideshift
3G***67Cylinder Group-Backhoe Boom1
3G***71Cylinder Group-Backhoe Stick1
3G***05Cylinder Group-Backhoe Bucket1
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9w9942 Bit & Cutting Edge Gp
5g2721 Boom Gp
8y6783 Bucket Ar-Multi-Purpose
3G***65Cylinder Group-Bucket; Cylinder Gp-Multi-Purpose Bucket2
6S***05Mounting Group-Cylinder; Cylinder Mounting Group1
8Y***71Bucket Group-Multipurpose; Bucket Gp-Multi-Purpose1
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8y5074 Bucket Ar-Multi-Purpose
3G***65Cylinder Group-Bucket; Cylinder Gp-Multi-Purpose Bucket2
5G***52Lines Group-Hydraulic; Hydraulic Lines Group1
6S***05Mounting Group-Cylinder; Cylinder Mounting Group1
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8y4996 Bucket As-General Purpose
5g0885 Bucket Gp-Hoe
5g0886 Bucket Gp-Hoe
5g0887 Bucket Gp-Hoe
5g0888 Bucket Gp-Hoe
8y5075 Bucket Gp-Multi-Purpose
8Y***75Bucket Group-Multipurpose; Bucket Gp-Multi-Purpose1
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8y2171 Bucket Gp-Multi-Purpose
8Y***71Bucket Group-Multipurpose; Bucket Gp-Multi-Purpose1
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6y1467 Case & Covers Gp
6y1906 Gear & Clutch Gp-Part 2 Of 2
6y1906 Gear & Clutch Gp-Part 1 Of 2
5g2543 Console Gp
5G***43Console Group; Backhoe Console Group1
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5g3594 Console Gp-Backhoe
5G***94Console Group-Backhoe; Console Group-Backhoe1
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5g2586 Control & Mounting Gp
5G***86Control & Mounting Group; Backhoe Mounting & Control Group1
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5g3960 Control Gp-Bucket
5g2636 Control Gp-Towing Winch
5G***36Control Group-Winch; Control Gp-Towing Winch1
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6y2048 Control Gp-Winch
5g4331 Control Gp-Towing Winch
5G***31Control Group-Winch; Control Gp-Towing Winch1
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5g3938 Control Gp-Towing Winch
5G***38Control Group-Winch; Control Gp-Towing Winch1
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6y2175 Conversion Ar-Winch
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***465
3T***80Cover As1
5G***38Control Group-Winch; Control Gp-Towing Winch1
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6y2176 Conversion Ar-Winch
0S***19Bolt,Machine Gear Retaining Part Of Kit P/N 1w***465
1A***83Bolt (4.75" Long-Location "B")2
3T***80Cover As1
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6y1959 Conversion Gp-Winch
6y2217 Conversion Gp-Winch
7g9447 Covers Gp-Shipping
2M***80Seal--To Connector Pump Outlet1
3T***85Cover-Shipping; Shipping Cover1
7G***47Cover Group-Shipping; Shipping Cover Group1
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5g2752 Drive Ar-Winch
5G***18Drive Group-Power Take-Off; Power Take-Off Drive Group1
5G***52Drive Ar-Winch1
5G***65Pump & Lines Group; Pump And Lines Group1
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5g1818 Drive Gp-Power Take-Off
5G***18Drive Group-Power Take-Off; Power Take-Off Drive Group1
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7g9470 Drive Gp-Winch
1H***97Ring-Retaining1
2S***63Seal 49.21 mm(1.9375 In.)I.D.1
7G***21Shaft1
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6y6754 Edge Gp-Segment
5g3260 Frame Gp
5G***60Frame Group; Frame Group-Backhoe1
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5g2235 Frame Gp
5G***35Frame Group; Backhoe Frame Group1
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5g3443 Frame Gp-Sliding
5G***43Frame Group-Sliding; Sliding Frame Group1
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5g2465 Frame Gp-Swing
5G***65Frame Group-Swing; Swing Frame Group1
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5g2695 Linkage Gp-Bucket
5G***95Linkage Group-Bucket; Bucket Linkage Group1
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7g6800 Manifold Gp-Filter Base & Pressure Control
5g2173 Mounting Ar-Backhoe
5G***73Mounting Ar-Backhoe1
5G***34Seat Group; Reversible Seat Group1
5G***41Gauge Group-Hydraulic Oil Temp; Hydraulic Oil Temperature Gauge Group1
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8y1128 Mounting Ar-Backhoe
5G***73Mounting Ar-Backhoe1
5G***33Pump & Lines Group1
8Y***28Mounting Ar-Backhoe1
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6s6371 Mounting Gp-Backhoe
6S***71Mounting Group-Backhoe; Backhoe Mounting Group1
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8j3294 Mounting Gp-Ripper
8J***94Mounting Group-Ripper; Ripper Mounting Group1
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7g9423 Mounting Gp-Winch
5g4320 Pad Gp-Street
6s7799 Pad Gp-Street
8j0631 Ripper Ar
6S***59Lines Group-Ripper; Ripper Lines Group1
7B***28Drive Screws-2 Required For Installing2
7J***20Cylinder Group-Ripper1
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8j3334 Ripper Gp
3y6893 Shaft Gp
3g4047 Sidecutter Gp
5g2979 Stabilizer Gp
5G***79Stabilizer Group; Stabilizer Group1
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5g2963 Step Gp
5g2717 Stick Gp-Hoe
5G***17Stick Group-Hoe; Backhoe Stick Group1
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9n4258 Tooth Gp
8j5313 Tooth Gp
9n4257 Tooth Gp-Short
5g1823 Universal Joint Gp
7g6861 Valve Gp
7g6799 Valve Gp-Selector & Pressure Control
7G***99Valve Group-Selector & Press Cont1
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6y2465 Winch Ar
5G***74Pump & Lines Group1
5G***31Control Group-Winch; Control Gp-Towing Winch1
6Y***55Winch Ar-Towing1
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6y2218 Winch Ar
5G***36Control Group-Winch; Control Gp-Towing Winch1
5G***74Pump & Lines Group1
6Y***55Winch Ar-Towing1
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6y2055 Winch Ar-Towing
4B***58Screw (Identification Plate) Mounting4
6V***27Plate, Serial Number; On Left Hand Side Of Winch1
6V***06Film (Instruction)1
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Lubrication System
6n3382 Breather Gp
1n3224 Filter Gp-Oil
1N***24Filter Group-Oil; Oil Filter Group1
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9y1898 Fumes Disposal Gp
9Y***98Fumes Disposal Group; Fumes Disposal Group1
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1w0367 Gauge Gp-Oil Level (Dipstick)
1W***67Gauge Group-Oil Level (Dipstick)1
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7w0332 Kit-Pcv Breather
2w6697 Pump Gp-Oil-Without Housing
Operator Station
6s9800 Cab Gp-Part 1 Of 4
6s9800 Cab Gp-Part 3 Of 4
6s9800 Cab Gp-Part 2 Of 4
6s9800 Cab Gp-Part 4 Of 4
8y5327 Dash Gp
5g0190 Door Gp-Lh-Part 1 Of 2
5g0190 Door Gp-Lh-Part 2 Of 2
5g0200 Door Gp-Rh-Part 1 Of 2
5g0200 Door Gp-Rh-Part 2 Of 2
8m7892 Gauge As-Ammeter
9x5715 Gauge Gp-Cluster
5g2342 Guard Gp-Brush-Side
5g2327 Guard Gp-Brush-Rear
8y5047 Guard Gp-Vandalism
5g2988 Handle Gp-Assist
5G***88Handhold Group; Handle Group--Assist1
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5g0537 Heater Gp-Cab
5G***37Heater Group-Cab; Cab Heater Group1
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8y1562 Horn Gp-Electric
8y5037 Instrument Gp
9w1490 Kit-Meter Service
8T***01Film; (Service Meter)1
9W***90Kit-Service Meter1
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9g6762 Meter-Service
9G***62Meter-Service1
9W***90Kit-Service Meter1
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8y5316 Mounting Gp-Cab
5g0460 Mounting Gp-Rops
5g2002 Pressurizer Gp-Cab
5G***02Pressurizer Group; Cab Pressurizer Group1
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5g2055 Pressurizer Gp-Part 2 Of 3
5g2055 Pressurizer Gp-Part 1 Of 3
5g2055 Pressurizer Gp-Part 3 Of 3
8y5312 Rollover Ar
5G***49Washer Group-Windshield; Windshield Washer Group1
5G***57Wiring Group-Cab; Cab Wiring Group1
5G***37Heater Group-Cab; Cab Heater Group1
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8y1561 Rops Ar-Open
5G***60Mounting Group-Rops1
5G***73Rops Group1
8Y***61Rops Ar-Open1
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5g0673 Rops Gp
8y1177 Seat & Support Gp
8y5044 Seat & Support Gp
8y4037 Seat Belt Gp
8y4029 Seat Belt Gp
6s7596 Seat Gp-Part 2 Of 2
1029924 Seat Gp
5g2334 Seat Gp-Reversible
5G***34Seat Group; Reversible Seat Group1
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8y5481 Seat Gp-Adjustable-Suspension
6s7596 Seat Gp-Part 1 Of 2
8y6713 Seat Gp-Vinyl
8y5480 Seat Gp-Adjustable-Suspension
8y6714 Seat Gp
2v7961 Suspension As-Seat
9c7161 Suspension Gp-Seat-Part 1 Of 2
9c7161 Suspension Gp-Seat-Part 2 Of 2
8y5482 Suspension Gp-Seat
5g0049 Washer Gp-Windshield
5G***49Washer Group-Windshield; Windshield Washer Group1
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5g0974 Wiper Gp
5g0457 Wiring Gp-Cab
5G***57Wiring Group-Cab; Cab Wiring Group1
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Service Equipment And Supplies
Name Plates & Films
03***91Pop - Rivet (To Secure Safety Lable)4
1P***07Film-Symbol; 2 On Bottom Of Upper Frame Below Engine. 2 On Front Of Upper Frame Above Boom Articulation4
3E***68Plate-Eec Certification1
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Steering And Braking System
8y5323 Brake Gp-Steering-Part 2 Of 2
8y5323 Brake Gp-Steering-Part 1 Of 2
5g6103 Case Gp-Steering Clutch
5g8725 Clutch Gp-Steering
5G***25Clutch Group-Steering; Clutch Gp-Steering Brake1
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8y5233 Control Gp-Steering Clutch-Part 2 Of 2
8y5233 Control Gp-Steering Clutch-Part 1 Of 2
8y6735 Valve Gp-Control
8y4011 Valve Gp-Control
8y4018 Valve Gp-Control
8y6734 Valve Gp-Control
Torque Converter
5g1378 Lines Gp-Torque Converter Cooler
1t1912 Torque Converter Gp
Transmission
9p6238 Case & Parts Gp-Part 2 Of 2
9p6238 Case & Parts Gp-Part 1 Of 2
8y5052 Control Gp-Transmission
9p5695 Control Gp-Transmission Hydraulic
9P***95Control Group-Transmission Hydraulic; Control Gp-Transmission Hydraulic1
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9p7244 Covers Gp-Shipping
9P***44Cover Group-Shipping; (Storage)1
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9p4540 Drive Gp-Pump
5g1239 Filler Gp-Power Train Oil
9p6277 Filter Gp-Transmission
9P***77Filter Group-Transmission; -Transmission1
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9w9485 Transfer Case & Gear Gp
9p7243 Transfer Case & Gear Gp
8y8146 Gear Gp-Bevel
5g1224 Gear Gp-Bevel
5g0905 Lines Gp-Power Train Oil
7g7601 Planetary Gp-Part 1 Of 2
7g7601 Planetary Gp-Part 2 Of 2
9p7239 Pump Gp-Gear
9p7240 Pump Gp-Gear
6i8656 Transmission Ar
1T***12Torque Converter Group1
6I***56Transmission Ar1
7G***01Planetary Group1
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6y6844 Transmission Ar
1T***12Torque Converter Group1
6V***14Kit-Gasket; (Hydraulic Control)0
6V***19Kit-Gasket; (Transmission Filter)0
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9p5694 Valve Gp-Selector & Pressure Control
9p5693 Valve Gp-Selector & Pressure Control
9P***93Valve Group-Selector & Press Cont1
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Undercarriage
6s9359 Cleaner Bar Gp
5g2628 Counterweight Gp-Sprocket
8y1103 Frame Gp-Track Roller
5g4371 Guard Gp-Recoil Mechanism
1038840 Guard Gp-Recoil Mechanism
1025937 Guard Gp-Rock
1081580 Guard Gp-Rock
8y0269 Guard Gp-Track Roller
1043605 Guard Gp-Track Roller-Rear
5g4380 Idler Gp-Front-Part 1 Of 2
5g4380 Idler Gp-Front-Part 2 Of 2
6y1511 Link As-Track
3t4352 Roller Gp-Track
3T***52Roller Group-Track; Single Flange Track Roller Group1
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3t4353 Roller Gp-Track
3T***53Roller Group-Track; Double Flange Track Roller Group1
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6s3609 Roller Gp-Track Carrier
6S***09Roller Group-Track Carrier; Track Carrier Roller Group1
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5g0377 Support Gp-Undercarriage
5g3575 Suppression Gp-Sound
9n4176 Track Gp
4K***38Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In)144
6Y***11Link As-Track1
7K***17Nut-Square; (9/16-18-Thd)144
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6y1671 Track Gp
4K***38Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In)144
5A***87Bolt-Track-( 9/16 X 18 X 3.0 In)4
6Y***11Link As-Track1
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6y1672 Track Gp
4K***38Bolt-Track (9/16-18 X 1.625 In); Bolt-Track-(9/16 X 18 X 1.6 In)144
5A***87Bolt-Track-( 9/16 X 18 X 3.0 In)4
6Y***11Link As-Track1
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935C II serial number reference

The Machine ID plate (including PIN/Serial Number) is typically located on the machine outer frame. The serial prefix consists of the first three alphanumeric characters of the Product Identification Number (PIN).

PrefixIdentifies
5DJ935C II
8CF935C II
SDJ935C II

Frequently asked questions

What engine powers the 935C II?

The Caterpillar 935C II is equipped with a Caterpillar 3204 engine, featuring a displacement of approximately 317.4 cu in (5.2 L) and producing 80 hp (59.7 kW) net power.

What is the operating weight of this machine?

The operating weight for the Caterpillar 935C II is approximately 19,310.3 lb (8759 kg).

What model replaced the 935C II?

The source text does not explicitly name a direct successor to the 935C II; however, it notes that production of the 935C II ended in 1993.

What 935C II owners discuss

What are the known engine performance issues for the 935C II series?
Users have reported instances of sudden, high-volume oil consumption (up to 3 or 4 gallons in less than one hour) without visible external leaks or exhaust smoke, which may indicate a broken piston ring. Additionally, some units exhibit engine noise or stalling shortly after startup.
What is the standard engine configuration for the Caterpillar 935C II?
The machine is powered by a Caterpillar 3204 engine. This engine features a displacement of approximately 5.2 L (317.3 cu in) and produces 80 hp (59.7 kW) net power.
What hydraulic system behaviors or maintenance concerns are common?
Sudden loss of hydraulic effectiveness in the boom and stick can occur due to low reservoir levels. For proper maintenance, ensure the hydraulic system fluid capacity (approximately 57 L [15.1 gal]) is monitored. Use Cat HYDO Advanced Oils to protect components and optimize drain intervals.
What undercarriage or steering components require inspection on this model?
The 935C II features a track gauge of 1420 mm (55.91 in) and includes 5 carrier rollers per side. For steering issues, check the brake bands for adjustment; worn bands can impact performance. In some similar series, flat spots on small rollers can also impede full movement.
How are electrical or sensor-related faults identified in this machine?
The system utilizes Module Identifier (MID), Component Identifier (CID), and Failure Mode Identifier (FMI) to communicate errors. For example, a flashing oil/coolant level light may indicate a relay problem even if levels appear full. Use specialized diagnostic tools to interpret these codes.
What should be checked when purchasing a used 935C II?
Inspect all major components for performance integrity. Specifically, check the transmission for smooth forward and reverse operation, verify the hydraulic system for leaks or pressure loss, and examine the undercarriage for wear on rollers and track shoes.

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

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