Caterpillarwork toolshear-demolition/scrap

Caterpillar S365C

Maintenance schedule, common problems & OEM parts breakdown

Search live S365C parts

The Caterpillar 365C is a large crawler excavator manufactured from 2007 to 2011, succeeding the 365B series. It is powered by a Caterpillar C15 ACERT engine, a 15.2-liter, six-cylinder unit producing 302 kW (404 hp) net power with mechanically actuated electronic fuel injection. Operating weight ranges from approximately 85,690 kg (188,936 lb) depending on configuration. The machine features a high-capacity side-by-side cooling system and Electric Power Control (EPC) for optimized fan speed. Configurations include standard and long-reach booms, various track shoe widths, and compatibility with work tools such as hammers, shears, rotators, grapples, and crushers.

The 365C introduced extended service intervals to reduce maintenance costs, notably moving engine oil and fuel filter changes to 500-hour intervals compared to previous generations. Its C15 ACERT engine utilized advanced combustion technology to meet emissions standards while maintaining high torque. In the used and parts market, the 365C remains significant due to its robust hydraulic system and durable undercarriage, with parts availability supported by its widespread use in bulk excavation and foundation work. The machine was succeeded by the 365F series, which further refined emissions compliance and operator comfort.

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 S365C specifications

Engine

ModelCat C15 ACERT
Net Power302 kW (404 hp)
Displacement15.2 l (928 in³)
Cylinders6
Emissions TierTier 3

Weights

Operating Weight65960 kg (the OEM part reference lb)
Shipping WeightNot documented for this exact serial range — verify with your dealer
Ground PressureNot documented for this exact serial range — verify with your dealer

Dimensions

Transport Length14.04 m (46 ft)
Transport Width3.5 m (11.5 ft)
Transport Height3.54 m (11.6 ft)
Track Gauge / Shoe Width650 mm (26 in) standard; 750 mm (30 in) and 900 mm (36 in) optional
Ground ClearanceNot documented for this exact serial range — verify with your dealer

Performance

Travel Speed4.1 km/h (2.6 mi/h)
Swing Speed6.5 r/min
Bucket Digging Force256 kN (57551.08 lb)
Stick Digging Force193 kN (43388.12 lb)
GradeabilityNot documented for this exact serial range — verify with your dealer

Service capacities (summary)

Fuel Tank800 l (211 gal US)
Hydraulic System670 l (177 gal US)
Engine Oil54 l (14.3 gal US)
Cooling System95 l (25 gal US)

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

S365C fluids & capacities

SystemCapacityRecommended fluid
Engine Crankcase (with filter)54 l (14.30 gal)Cat DEO or Cat DEO-ULS multigrade oil; viscosity selection depends on ambient temperature per the Caterpillar Machine Fluids Recommendations publication.
Cooling System95 l (25 gal)Caterpillar recommends using coolant meeting factory specifications for the C15 ACERT engine; specific brand name not listed in the provided service refill data.
Fuel Tank799 l (211 gal)Standard diesel fuel; no specific brand fluid recommendation provided in the service refill data.
Hydraulic System - Including Tank670 l (177 gal)Cat HYDO Advanced hydraulic oil; viscosity selection depends on ambient temperature per the Caterpillar Machine Fluids Recommendations publication.
Final Drive - Each15 l (4 gal)Caterpillar recommends the fluid specified in the Caterpillar Machine Fluids Recommendations publication for final drive applications.
Swing Drive12 l (3.20 gal)Caterpillar recommends the fluid specified in the Caterpillar Machine Fluids Recommendations publication for swing drive applications.

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

Caterpillar S365C maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level and condition.
  • Check hydraulic fluid level via sight glass.
  • Check coolant level and radiator cap integrity.
  • Drain water from fuel separator.
  • Inspect air filter restriction indicator.
  • Check for fluid leaks under the machine.
Every 250 h
  • Change engine oil and oil filter.
  • Grease all boom, stick, bucket, and swing pivot points.
  • Check hydraulic system oil level.
  • Inspect track tension and shoe/pad condition.
  • Inspect hydraulic hoses for cracks, abrasion, or leaks.
  • Check pins, bushings, and attachment points.
Every 500 h
  • Replace fuel filter and drain water separator.
  • Replace hydraulic return filter.
  • Test coolant with SCA (Supplemental Coolant Additive).
  • Inspect undercarriage for wear and measure components.
  • Check battery terminals and load.
  • Inspect belts, hoses, and clamps for wear.
Every 1,000 h
  • Change final drive oil (each side).
  • Check and top up swing drive oil.
  • Clean or replace air filter primary element.
  • Perform S.O.S fluid analysis on engine oil and hydraulic fluid.
  • Inspect turbocharger condition.
  • Torque ROPS/FOPS bolts to specification.
Every 2,000 h
  • Change hydraulic system oil.
  • Flush and replace coolant.
  • Replace air filter secondary element.
  • Perform comprehensive structural inspection of boom and stick welds.
  • Inspect and replace worn belts and hoses.
  • Evaluate major components for wear.

Servicing the S365C beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize S.O.S fluid analysis at 1,000-hour intervals to monitor engine oil wear metals and hydraulic fluid contamination. Check coolant SCA concentration at 500 hours to prevent liner pitting. Monitor hydraulic oil temperature via the EPC system to ensure cooling efficiency in ambient temperatures up to 52°C (126°F). Track ISO cleanliness levels in hydraulic fluid to protect pump and valve integrity. Analyze fuel dilution and soot loading in engine oil to predict C15 engine health. Inspect air filter restriction indicators daily to prevent dirt ingestion.

Corrective & Common Repairs

Address hydraulic hose leaks and abrasion during daily inspections to prevent system failure. Replace worn track shoes and pins to maintain undercarriage alignment and reduce ground pressure. Inspect boom and stick welds for stress cracks during structural checks. Replace fuel filters and water separators to protect the C15 ACERT injection system. Check swing drive oil levels and condition to prevent gear wear. Verify brake system function and parking brake engagement for safe operation on inclines.

Overhaul & Rebuild Points

Plan major component evaluation at 2,000-hour intervals, including hydraulic pump and cylinder inspection. Replace final drive oil and inspect gears for wear patterns. Check turbocharger vanes and center-section for wear or cracking. Evaluate engine piston rings and bearings via oil analysis trends. Inspect ROPS/FOPS structure and torque bolts to specification. Assess undercarriage wear measurements to determine sprocket, idler, and roller replacement needs.

Seasonal & Environment Servicing

In dusty or quarry environments, clean radiator and oil cooler fins daily to prevent overheating. Replace air filter elements at 500-hour intervals in high-dust conditions. Use Cat DEO-ULS engine oil and Cat HYDO Advanced hydraulic oil for optimal performance in extreme temperatures. Monitor coolant glycol content and pH levels to prevent freezing or corrosion in cold climates. Check battery condition and terminals regularly in cold weather to ensure reliable starts. Inspect hydraulic hoses for brittleness in cold conditions and replace as needed.

S365C fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
E360 (High)Engine Coolant Temperature — HighLow coolant level, failed thermostat, water pump issue, or blocked cooler coresDiagnose cooling system; do not operate until resolved
E361 (High)Engine Coolant Temperature — Very High (Shutdown)Severe cooling system failureEngine shutdown required; perform full cooling system diagnosis
110-0Engine Coolant Temp — Above NormalLow coolant level, thermostat failureInspect cooling system, refill coolant, test thermostat
110-3Engine Coolant Temp Sensor — Voltage HighOpen circuit, 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, tone ring damageCheck sensor gap; test speed sensor and tone ring
2458-2DPF #1 Differential Pressure — ErraticPlugged pressure ports, failing sensorClean pressure ports; test sensor; verify DPF soot load
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
2348-9SAE J1939 Data Link #2 — Abnormal Update RateCAN bus wiring damage, termination faultCheck CAN wiring and measure termination resistance

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

S365C attachments & work tools

Excavator Buckets

General Purpose, Light Material, Multi-Purpose, and Side Dump buckets are available for the Cat compact wheel loader class. All buckets are built to Caterpillar specifications and carry the Caterpillar brand.

Excavator Couplers

Quick couplers are the high-performance option for Cat excavators, allowing one person to change work tools in seconds for maximum performance and flexibility on the job site.

Excavator Work Tools

Choose from a variety of work tools such as hammers, shears, rotators, grapples, or crushers. Actual weights and ground pressures will depend on the final machine configuration.

Compact Wheel Loader Buckets

A variety of buckets are available for the Cat compact wheel loader, including General Purpose, Light Material, Multi-Purpose, and Side Dump buckets. All are built to exacting Caterpillar specifications.

Compact Wheel Loader Attachments

Rakes are designed to remove roots from the ground and are also used to pile up branches, logs, or roots during a land cleaning application. Rakes are versatile work tools for land clearing, brush piling, and site preparation.

Compact Track Loader Attachments

Augers, brooms, forks, hammers, and snow removal tools are featured work tools for compact track loaders. Augers are used for drilling holes for footings, fencing, signs, trees, and shrubs.

Skid Steer Attachments

Buckets for skid steer loaders and compact track loaders include General Purpose, Dirt, Utility, Light Material, Multi-Purpose, Industrial Grapple, and Utility Grapple. Forks are ideal for transporting palletized items.

Mini Excavator Attachments

Featured work tools for mini excavators include augers, grapples, hammers, thumbs, and tilt rotate systems. Tilt rotate systems are industry-first with fully integrated technology into the mini hydraulic excavator.

Hydraulic Fluids

Cat DEO-ULS and Cat DEO are multigrade oils. Cat HYDO Advanced oils protect hydraulic components, ensuring maximum efficiency from the hydraulic system.

Engine Specifications

The Caterpillar C15 with ACERT Technology is a 15.2 liter, six-cylinder, 302 kW (404 hp) engine with mechanically actuated electronic fuel injection (MEUI) and overhead camshaft.

All S365C assemblies by section

Every catalogued assembly group for the Caterpillar S365C. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Frame And Body
331-5232 Housing Gp-Shear
09***05Bolt-Socket Head; (M16x2x100-mm)8
15***19Lockwasher2
15***21Lockwasher12
See all parts with full part numbers in Heavy Parts AI →
360-0135 Housing Gp-Shear
09***05Bolt-Socket Head; (M16x2x100-mm)8
15***21Lockwasher14
16***12Clip; (Slot)2
See all parts with full part numbers in Heavy Parts AI →
308-0525 Housing Gp-Shear
15***19Lockwasher2
15***21Lockwasher14
16***12Clip; (Slot)2
See all parts with full part numbers in Heavy Parts AI →
Hydraulic System
344-7542 Cylinder & Valve Gp
14***06Bolt-Socket Head; (M20x2.5x140-mm)5
20***25Valve Group-Speed Control1
34***42Cylinder & Valve Group1
See all parts with full part numbers in Heavy Parts AI →
344-1185 Cylinder & Valve Gp
14***06Bolt-Socket Head; (M20x2.5x140-mm)5
20***25Valve Group-Speed Control1
34***85Cylinder & Valve Group1
See all parts with full part numbers in Heavy Parts AI →
344-7543 Cylinder Gp-Shear
16***16Seal1
17***21Adapter As1
1P***05Seal (Check Valve Outlet)2
See all parts with full part numbers in Heavy Parts AI →
344-1186 Cylinder Gp-Shear
16***16Seal1
17***21Adapter As1
1P***05Seal (Check Valve Outlet)2
See all parts with full part numbers in Heavy Parts AI →
344-7544 Cylinder Gp-Shear
09***48Nipple, Grease1
16***54Seal1
17***82Bolt-Socket Head; (M24x3x150-mm)29
See all parts with full part numbers in Heavy Parts AI →
344-1187 Cylinder Gp-Shear
09***48Nipple, Grease1
16***16Seal1
17***23Plug As4
See all parts with full part numbers in Heavy Parts AI →
170-2174 Manifold Gp-Control
14***20Bolt-Socket Head; (M6x1x75-mm)4
17***74Manifold Group-Control1
7Y***19Seal-O-Ring (Id=12.37mm)2
See all parts with full part numbers in Heavy Parts AI →
216-7650 Motor Gp-Gerotor
17***73Motor Group-Gerotor1
17***76Ring-Mounting1
17***77Gear-Drive; (15-Teeth)1
See all parts with full part numbers in Heavy Parts AI →
170-2173 Motor Gp-Gerotor
17***73Motor Group-Gerotor1
17***21Kit-Housing1
17***22Shaft-Output1
See all parts with full part numbers in Heavy Parts AI →
266-7382 Rotator Gp-Hydraulic
09***73Bolt; (Socket Head) (M12x1.75x60mm)16
12***28Adaptor - Includes:-4
12***24Seal-O-Ring; (12.37mm Id)4
See all parts with full part numbers in Heavy Parts AI →
243-1695 Rotator Gp-Hydraulic
09***73Bolt; (Socket Head) (M12x1.75x60mm)8
12***28Adaptor - Includes:-4
12***24Seal-O-Ring; (12.37mm Id)4
See all parts with full part numbers in Heavy Parts AI →
265-6468 Swivel Gp
16***43Seal1
17***57Plug As4
17***14Stator1
See all parts with full part numbers in Heavy Parts AI →
208-8451 Valve Gp-Control
13***54Plug As3
20***51Valve Group-Control1
20***87Slack Adjuster Group1
See all parts with full part numbers in Heavy Parts AI →
208-5125 Valve Gp-Speed Control
09***01Bolt-Socket Head; (M8x1.25x40-mm)4
17***55Seal-O-Ring2
20***74Bolt-Socket Head; (M16x2x55-mm)8
See all parts with full part numbers in Heavy Parts AI →
Service Equipment And Supplies
321-8390 Kit-Maintenance
20***41Washer; (21x63.5x22-mm Thk)2
24***85Ring1
24***86Wrench; (Lock, 140)1
See all parts with full part numbers in Heavy Parts AI →
332-0235 Kit-Maintenance
20***41Washer; (21x63.5x22-mm Thk)2
24***86Wrench; (Lock, 140)1
24***76Wrench; (Lock, 160)1
See all parts with full part numbers in Heavy Parts AI →
331-5230 Plate & Film Gp
13***55Setscrew; (M4x0.7x8-mm)2
15***96Film-Notice; (Lift Eye Location)5
22***69Film-Warning; (Do Not Operate, Read Omm)2
See all parts with full part numbers in Heavy Parts AI →
324-5509 Plate & Film Gp
13***55Setscrew; (M4x0.7x8-mm)2
15***96Film-Notice; (Lift Eye Location)5
22***69Film-Warning; (Do Not Operate, Read Omm)2
See all parts with full part numbers in Heavy Parts AI →
360-0209 Plate & Film Gp
13***55Setscrew; (M4x0.7x8-mm)2
15***96Film-Notice; (Lift Eye Location)5
22***69Film-Warning; (Do Not Operate, Read Omm)2
See all parts with full part numbers in Heavy Parts AI →
Work Tool Arrangement
331-5229 Shear Ar-Hydraulic
33***29Shear Ar-Hydraulic1
33***30Plate & Film Group, Decal1
33***31Shear Group-Hydraulic1
See all parts with full part numbers in Heavy Parts AI →
360-0137 Shear Ar-Hydraulic
33***35Kit-Maintenance1
36***36Shear Group-Hydraulic1
36***37Shear Ar-Hydraulic1
See all parts with full part numbers in Heavy Parts AI →
308-0522 Shear Ar-Hydraulic
30***22Shear Ar-Hydraulic1
30***24Shear Group-Hydraulic1
32***90Kit-Maintenance1
See all parts with full part numbers in Heavy Parts AI →
Work Tools
308-0526 Edge Gp-Cutting
22***62Shim; (1-mm Thk)4
22***63Shim; (1-mm Thk)3
22***64Shim; (1.5-mm Thk)1
See all parts with full part numbers in Heavy Parts AI →
331-5234 Edge Gp-Cutting
22***63Shim; (1-mm Thk)2
22***64Shim; (1.5-mm Thk)2
22***67Edge-Cutting2
See all parts with full part numbers in Heavy Parts AI →
360-0140 Edge Gp-Cutting
22***63Shim; (1-mm Thk)4
22***64Shim; (1.5-mm Thk)4
22***67Edge-Cutting1
See all parts with full part numbers in Heavy Parts AI →
308-0524 Shear Gp-Hydraulic
26***82Rotator Group-Hydraulic1
30***24Shear Group-Hydraulic1
30***25Housing Group-Shear1
See all parts with full part numbers in Heavy Parts AI →
331-5231 Shear Gp-Hydraulic
24***95Rotator Group-Hydraulic1
33***31Shear Group-Hydraulic1
33***32Housing Group-Shear1
See all parts with full part numbers in Heavy Parts AI →
360-0136 Shear Gp-Hydraulic
24***95Rotator Group-Hydraulic1
36***35Housing Group-Shear1
36***36Shear Group-Hydraulic1
See all parts with full part numbers in Heavy Parts AI →

Frequently asked questions

What engine does the Caterpillar 365C use?

The Caterpillar 365C uses a Caterpillar C15 ACERT engine, a 15.2-liter, six-cylinder diesel engine producing 302 kW (404 hp) net power.

What is the operating weight of the Caterpillar 365C?

The operating weight of the Caterpillar 365C varies by configuration, ranging from approximately 85,690 kg (188,936 lb).

What model replaced the Caterpillar 365C?

The Caterpillar 365C was succeeded by the Caterpillar 365F series excavator.

What S365C owners discuss

What engine powers the Caterpillar 365C and what are its key characteristics?
The Caterpillar 365C uses the Cat C15 ACERT engine. This is a 15.2-liter, six-cylinder, overhead camshaft engine with mechanically actuated electronic fuel injection (MEUI). Net flywheel power is 302 kW (404 hp) at 1800 rpm. The engine utilizes ACERT technology to reduce emissions at the point of combustion through optimized fuel, air, and electronics systems. It features a water-cooled, center-section waste-gated turbocharger for improved performance across low and high load conditions. Service intervals for engine oil, oil filter, and fuel filters are extended to 500 hours. Fluid specifications include Cat DEO or DEO-ULS multigrade engine oil meeting API CJ-4 category standards. Variations in emissions tier or specific power output may exist depending on the machine's configuration and regional regulations.
How does the hydraulic system behave and what are common failure points?
The 365C hydraulic system is known for precise control and high stick/bucket forces, but it is sensitive to fluid contamination and temperature. The system capacity is 177 gallons (670 liters) including the tank, with a pump flow of 212 gallons per minute (802 liters per minute). Hydraulic oil temperature high warnings are common if the cooling system is compromised. The high-capacity, side-by-side cooling system allows operation in ambient temperatures up to 52°C (126°F), with Electric Power Control (EPC) regulating fan speed based on coolant and hydraulic oil temperatures. Common issues include loss of pressure, jerky movement, and overheated oil due to internal leakage or contamination. Operators report that hydraulic degradation is slow but accelerates if oil breaks down. Use Cat HYDO Advanced hydraulic oil to protect components and optimize drain intervals; mixing with generic oils can cause sludge and valve clogging. Cross-contamination should remain below 10%.
What are the typical undercarriage wear patterns and maintenance needs?
The 365C is a large crawler excavator with an operating weight ranging from approximately 85,690 kg (188,936 lb) depending on the configuration (standard vs. L-series). Undercarriage wear is accelerated by the machine's mass and high ground pressure. Track width varies by configuration, with sources citing 600 mm and 650 mm options. Final drive fluid capacity is 4 gallons (15 liters) per side. Swing drive fluid capacity is 3.20 gallons (12 liters). Grinding noises or slow travel/swing movement often indicate internal bearing failure or lubricant breakdown in the final drives and swing systems. Regular inspection of ground engaging tools (GET) and track components is critical. Actual weights and ground pressures depend on the final machine configuration, including counterweight and track shoe selection.
What are the common electrical and sensor issues reported for this model?
Electrical instability is a frequent issue, often manifesting as intermittent ECM faults. These faults are exacerbated when the machine is on non-level ground or inclines, causing erratic behavior that may require the operator to track backwards to maintain control. Root causes include moisture intrusion into connectors, stressed wiring harnesses, loose or corroded grounds, and failing charging systems. A weak battery can cause the ECM to behave erratically, leading operators to mistakenly suspect control unit failure. The hydraulic activation control lever deactivates hydraulic functions during engine start-up to prevent unintentional operation; ensure this lever is functional. Diagnostic codes should be treated as real system issues rather than software glitches. Verify battery health and ground connections before replacing ECM components.
What are the critical fluid capacities and specifications for the 365C?
Cooling system capacity is 25 gallons (95 liters). Engine oil capacity is 14.30 gallons (54 liters). Fuel tank capacity is 211 gallons (799 liters). Hydraulic system fluid capacity (including tank) is 177 gallons (670 liters). Final drive fluid capacity is 4 gallons (15 liters) per unit. Swing drive fluid capacity is 3.20 gallons (12 liters). Use Cat DEO or DEO-ULS engine oil. For hydraulic systems, use Cat HYDO Advanced oil. In applications requiring fire-resistant fluids, consult the machine fluids recommendations guide. Biodegradable hydraulic oils are also available. Ensure oil levels are maintained above minimum marks to prevent oil starvation during high-load or incline operations, which can cause rapid bearing failure.
What are the key inspection points when buying a used Caterpillar 365C?
Verify the exact serial number prefix and sequence ID to confirm the build year and original configuration, as specs vary by series (e.g., 365C vs. 365C L). Check for intermittent ECM faults, especially when the machine is on an incline. Inspect the cooling system for blockage or leaks, as the side-by-side cooler is critical for preventing hydraulic overheating. Test the hydraulic pump flow and check for jerky movements or pressure loss. Examine the undercarriage for excessive wear, given the machine's high operating weight (approx. 85,690 kg / 188,936 lb). Verify the functionality of the hydraulic activation control lever. Check for signs of moisture in electrical connectors and ensure the battery and alternator are providing stable voltage. Confirm that engine oil and hydraulic oil have been changed at the recommended 500-hour intervals using correct specifications.
What safety-critical fixes or verifications are required for the 365C?
The hydraulic activation control lever must be verified to ensure it properly deactivates hydraulic functions during engine start-up to prevent unintentional machine operation. The Electric Power Control (EPC) fan system must be checked to ensure it responds correctly to coolant and hydraulic oil temperatures to prevent overheating in high ambient conditions. Any ECM faults related to hydraulic pressure or engine derating must be diagnosed and resolved by a dealer to ensure safe operation. Have your dealer verify the machine's build date and configuration via the official Service Information System (SIS) to ensure correct fluid specifications and service intervals are applied. Safety protocols and operating weights must be confirmed against the specific machine's data plate, as actual weights vary by configuration.

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

Need a specific S365C part?

Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.

Search parts in the app