Caterpillar 313D SR
Caterpillarexcavator

Caterpillar 313D SR

Maintenance schedule, common problems & OEM parts breakdown

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The Caterpillar 313D is a midi excavator in the small excavator class, produced from 2011 onward as a Tier 3 compliant machine for the Mainland China market (GCN1). It is powered by a Cat C4.2 ACERT diesel engine delivering 67 kW (89.9 hp) net power. The standard operating weight is 13,430 kg (29,608 lb). The 313D succeeded the 313C series and was later followed by the 313D2 generation. Configurations included a heavy-duty 2.5 m stick and a 4.65 m boom, with options for general duty or severe duty buckets and ground engaging tools.

Across the 313D to 313D2 transition, Caterpillar updated emissions compliance to meet stricter Tier 4 Final / EU Stage IV regulations, refined the hydraulic cross-sensing system for improved efficiency, and enhanced the operator station with a full-color LCD monitor. The 313D remains significant in the used and parts market due to its robust C4.2 engine architecture, widely available S∙O∙SSM sampling ports for predictive maintenance, and durable grease-lubricated track seals that reduce undercarriage wear. Its extended service intervals and ground-level service access make it a cost-effective choice for fleet operators managing midi excavator replacements.

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 313D SR specifications

Engine

ModelCat C4.2 ACERT
Gross Power96.6 hp (72 kW)
Net Power89.9 hp (67 kW)
Displacement259.4 cu in (4.25 L)
Cylinders4
Emissions TierTier 3 / Stage IIIA

Weights

Operating Weight29,608 lb (13,430 kg)
Ground PressureNot documented for this exact serial range — verify with your dealer
Transport Weight29,608 lb (13,430 kg)

Dimensions

Transport Length25.23 ft (7.69 m)
Transport Width8.17 ft (2.49 m)
Transport Height9.25 ft (2.82 m)
Tail Swing RadiusNot documented for this exact serial range — verify with your dealer
Track Shoe Width19.7 in (500 mm)
Ground ClearanceNot documented for this exact serial range — verify with your dealer
Undercarriage LengthNot documented for this exact serial range — verify with your dealer

Performance

Max Dig Depth16.86 ft (5.14 m)
Max Reach at Ground25.56 ft (7.79 m)
Max Dump HeightNot documented for this exact serial range — verify with your dealer
Max Cutting HeightNot documented for this exact serial range — verify with your dealer
Swing Speed12.4 rpm
Travel Speed3.4 mph (5.5 km/h)
GradeabilityNot documented for this exact serial range — verify with your dealer
Drawbar Pull25,628 lb (114 kN)

Forces

Bucket Digging Force19,118 lbf (85 kN)
Stick/Arm Digging ForceNot documented for this exact serial range — verify with your dealer

Service capacities (summary)

Fuel Tank66 gal (250 L)
Hydraulic System/Tank42.8 gal (162 L)
Engine Oil5.2 gal (19.5 L)
Cooling System4.7 gal (17.9 L)

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

313D SR fluids & capacities

SystemCapacityRecommended fluid
Engine crankcase (with filter)19.5 l (5.2 gal (US))Cat DEO or TDTO
Cooling system17.9 l (4.7 gal (US))Cat ELC
Fuel tank250 l (66 gal (US))ULSD
Hydraulic system total162 l (42.8 gal (US))Cat HYDO or equivalent
Hydraulic tank150 l (39.6 gal (US))Cat HYDO or equivalent
Final drive (each)3 l (0.79 gal (US))Cat TDF or equivalent
Swing drive3 l (0.79 gal (US))Cat TDF or equivalent
Grease (spec only)N/ACat Extreme Application Grease 1 or 2

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

Caterpillar 313D SR maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level and top up if necessary.
  • Check coolant level in the radiator and reserve tank.
  • Check hydraulic oil level in the tank.
  • Inspect track tension and check for loose bolts on undercarriage components.
  • Clean the air filter indicator and check the air filter element.
Every 250 h
  • Replace the engine oil and oil filter.
  • Replace the fuel filter.
  • Replace the hydraulic return filter element.
  • Lubricate all grease points on the boom, stick, and bucket linkage.
  • Check the condition of the track links and rollers.
Every 500 h
  • Replace the hydraulic oil in the tank.
  • Replace the pilot filter element.
  • Inspect the radiator and oil cooler fins for debris and clean if necessary.
  • Check the battery electrolyte level and terminal condition.
  • Inspect the fuel lines and hoses for wear or leaks.
Every 1,000 h
  • Replace the engine coolant and add new coolant supplement.
  • Replace the air filter primary and secondary elements.
  • Inspect the swing bearing and grease if required.
  • Check the travel motor oil levels in the final drives.
  • Inspect the hydraulic hoses and tubes for chafing or damage.
Every 2,000 h
  • Replace the hydraulic tank breather cap.
  • Inspect the engine valve clearance and adjust if necessary.
  • Check the alternator belt tension and condition.
  • Inspect the undercarriage components for excessive wear.
  • Perform a comprehensive inspection of the electrical system.

Servicing the 313D SR beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize the factory-installed S∙O∙SSM sampling ports for engine oil, coolant, and hydraulic system analysis. Monitor hydraulic tank oil levels every 500 hours and replace the oil at that interval to prevent contamination. Check the hydraulic return capsule filter for metal particles indicating pump or cylinder wear. Use Cat ET diagnostic tool via the test connection behind the cab to read fault codes and monitor pump pressure data. Analyze coolant supplement levels to maintain proper corrosion inhibition for the aluminum pistons and steel block.

Corrective & Common Repairs

Address frequent issues with the air filter warning system by cleaning the double-element air filter and checking the indicator plug. Replace the fuel filter and water separator to prevent injector issues in the C4.2 engine. Inspect the grease-lubricated track seals for wear; replace track links and bushings if inner wear exceeds limits to prevent derailment. Check the hydraulic snubbers at the boom cylinder rod end and stick cylinder ends for leaks or shock absorption failure. Verify the condition of the viscous rubber cab mounts to restore operator comfort and reduce vibration.

Overhaul & Rebuild Points

Plan major overhauls for the C4.2 engine at high hour intervals, focusing on the induction-hardened crankshaft and aluminum alloy pistons for wear. Rebuild the hydraulic pumps when cross-sensing system efficiency drops, indicated by slower implement speeds. Inspect the swing drive and swing bearing for backlash; replace bearings if play exceeds specifications. Overhaul the travel motors and final drives when drawbar pull decreases or oil levels drop frequently. Check the X-shaped box section carbody and robot-welded track roller frames for structural fatigue or cracks.

Seasonal & Environment Servicing

In cold climates, use Cat Extreme Application Grease - Arctic for lubrication points to ensure proper flow at low temperatures. Check the coolant freezing point before winter to prevent block damage. In hot environments, clean the radiator, oil cooler, and air-to-air-after-cooler fins regularly to prevent overheating. Inspect the fan guard and fan blades for damage. Use Cat Extreme Application Grease - Desert for high-temperature applications. Ensure the air filter is clean to prevent dust ingestion in arid conditions.

313D SR fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
110-0Engine Coolant Temperature — Above NormalLow coolant level, failed thermostat, or blocked radiator.Check coolant level immediately; inspect for leaks and test thermostat function.
110-3Engine Coolant Temperature Sensor — Voltage HighOpen circuit in sensor wiring or failed sensor.Inspect wiring harness for damage; replace sensor if confirmed faulty.
174-3Engine Fuel Temperature — Voltage Above NormalOpen circuit in fuel temperature sensor wiring.Inspect harness and replace sensor if necessary.
190-8Engine Speed — Abnormal FrequencySpeed sensor air gap issue, sensor failure, or tone ring damage.Check sensor gap; test speed sensor and tone ring.
41-38-Volt DC Supply — Voltage Above NormalShort to power on the 8V reference circuit.Inspect sensors sharing the 8V supply and isolate the fault.
41-48-Volt DC Supply — Voltage Below NormalShort to ground on the 8V reference circuit.Disconnect sensors one at a time to locate the short.
2348-9SAE J1939 Data Link #2 — Abnormal Update RateCAN bus wiring damage or termination fault.Check 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.

313D SR attachments & work tools

Buckets

The 313D class utilizes a standard pin-on mounting system; quick couplers are available as aftermarket or dealer-installed options for this size class. Bucket capacities vary by configuration and series, typically ranging from 0.15 to 0.30 cubic meters (0.20 to 0.40 cubic yards) for general duty applications. Widths generally align with the machine's 2.3-meter (7.5-foot) operating width, with standard digging buckets measuring approximately 1.2 to 1.4 meters (47 to 55 inches) across.

Hydraulic hammers

The 313D class is compatible with the 1.5 to 2.0 metric ton (3,300 to 4,400 lb) breaker weight class. Typical breaker models in this range include the 26mm to 30mm (1.0 to 1.2 inch) bore class hammers. The machine's auxiliary hydraulic system supports standard medium-pressure circuits required for these tools.

Quick couplers

Mechanical and hydraulic quick couplers are available for the 313D class, designed to match the standard pin spacing of the boom and stick. These couplers allow for rapid attachment changes without leaving the cab, provided the machine is equipped with the necessary auxiliary hydraulic lines and electrical connectors for power and control.

Thumbs/grapples

Hydraulic thumbs and grapples are available for the 313D class to enhance material handling and sorting capabilities. These attachments require auxiliary hydraulic flow and pressure, typically supplied via the machine's standard auxiliary circuits. Thumb kits are designed to bolt directly to the bucket side plates or use a universal mounting bracket.

Rippers

Single or multi-shank rippers are available for the 313D class to assist in breaking up hard soil or rock. These attachments mount to the stick pin and require auxiliary hydraulic power for depth control and shank adjustment. Ripper configurations vary by application, with shank counts and penetration depths dependent on the specific model and series.

Hydraulic-kit notes

The 313D class is powered by a Cat C3.6 or C4.2 engine depending on the specific model year and emission tier. Auxiliary hydraulic circuits are required for most work tools, including hammers, thumbs, and rippers. The machine supports standard medium-pressure auxiliary systems; high-flow options may be available for specific high-demand tools but are not standard.

All 313D SR assemblies by section

Every catalogued assembly group for the Caterpillar 313D SR. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Machine Arrangement
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See all parts with full part numbers in Heavy Parts AI →

313D SR serial number reference

The PIN plate is located on the right-hand side of the upper structure, near the swing mechanism or engine compartment access door. The prefix is the first three alphanumeric characters of the eight-character PIN; the remaining five digits are the sequence number.

PrefixIdentifies
KXD313D
WPK313D

Frequently asked questions

What engine does the Caterpillar 313D use?

The Caterpillar 313D uses a Cat C4.2 ACERT diesel engine with a displacement of 4.25 liters (259.35 in³), delivering 89.9 hp (67 kW) net power and 96.6 hp (72 kW) gross power.

What is the operating weight of the Caterpillar 313D?

The standard operating weight of the Caterpillar 313D is 13,430 kg (29,608 lb).

What model replaced the Caterpillar 313D?

The Caterpillar 313D was succeeded by the Caterpillar 313D2, which updated emissions compliance to Tier 4 Final / EU Stage IV and refined hydraulic and operator station features.

What 313D SR owners discuss

What are the known powertrain and hydraulic behaviors for the Caterpillar 313D SR regarding transmission and hydraulic flow interruption?
The machine may display an 'Eco' mode and reduce engine RPM, followed by a 'Powertrain Failure' warning during travel. This often correlates with a loss of travel speed indication or intermittent operation. Hydraulic interruptions, described as 'jumping' or 'stuttering' of cylinders (particularly the boom cylinder), can occur during light-load flat grading. This behavior is often linked to the MCV (Main Control Valve) near the engine, the LS (Load Sensing) valve, or contamination in the hydraulic circuit. A specific failure mode involves the loss of first-gear travel while second gear remains functional, indicating potential internal transmission clutch slippage or sensor issues rather than a complete hydraulic failure. Have your dealer verify the ECM and transmission clutch pack condition if these symptoms persist after sensor checks. (Source: Factory spec sheet; Operator forum diagnostics for 313D/M313D series)
What undercarriage or wear patterns are typical for this machine type?
The 313D Series 2 incorporates a heavy-duty boom and specific stick options designed to manage wear in mass excavation and trenching applications. Standard maintenance greases include Cat Extreme Application Grease 1 or 2, with melting points of 260°C (500°F) and ambient temperature ranges of -30 to +50°C (-22 to +122°F). Undercarriage wear is influenced by the specific track shoe configuration and ground pressure, which affects transport planning and jobsite fit. (Source: Caterpillar Maintenance and Service documentation for 313D/313D2/315D)
What engine quirks are associated with the 313D series?
The 313D Series 2 utilizes a C4.4 engine. Common issues reported for Caterpillar C13 engines in similar heavy-duty applications include faulty fuel injectors, bad crankcase ventilation systems, and low oil pressure. While the 313D uses the C4.4, operators should monitor for engine derate conditions and ensure proper crankcase ventilation to avoid power loss. (Source: Technical Specifications for 313 Hydraulic Excavator; Dave's Auto Center analysis of Caterpillar C13 engine problems)
What are the common electrical or sensor issues affecting travel and function?
Electrical instability is a frequent cause of excavator problems. Specific issues include failure of the travel speed sensor in the transmission, which can cause the machine to lose speed indication or display erratic values (e.g., dropping to 0 km/h). The wiring harness and swivel connections are critical failure points; corrosion or damage here can interrupt signals to the ECM. Additionally, the cabin-mounted throttle sensor on the right side can cause reduced travel speed but does not typically affect speed indication readings. The machine may also fail to start or communicate if the 'Required Machine Configuration' error appears, indicating a lack of communication between the ECM and other modules. Have your dealer verify the ECM and wiring harness integrity if electrical faults persist. (Source: Operator forum diagnostics for 313D/M313D series; Heavy Machinery Club common problems analysis)
What should be checked when buying a used 313D SR?
Verify the exact serial-prefix specification sheet to confirm the installed attachment package, emissions tier, and regional configuration, as these affect weight, reach, and fuel use. Check the MCV (Main Control Valve) near the engine for proper function of the hammer/auxiliary line and main control functions. Inspect the travel speed sensor and its wiring harness for damage or corrosion, as intermittent failures here are common. Test the transmission for first-gear engagement under load, as slippage in first gear while second gear works is a known issue. Ensure the hydraulic system is free of contamination that could cause cylinder 'jumping' or stuttering during light-load operations.
What are the fluid specifications for this machine?
Use Cat DEO (Diesel Engine Oil) or TDTO (Turbocharged Diesel Engine Oil) for the engine. Use Cat ELC (Extended Life Coolant) for the cooling system. Use Cat HYDO or equivalent for the hydraulic system. Greases include Cat Extreme Application Grease 1 or 2 for standard applications, with melting points of 260°C (500°F). (Source: Caterpillar Maintenance and Service documentation for 313D/313D2/315D)
What are the key technical specifications for the 313D Series 2?
The 313D Series 2 incorporates a 4.65 m (15'3") heavy duty boom and one stick option. The engine power is 82.0 kW (110 hp) per ISO 14396. The machine is designed for high efficiency and performance with convenient access points and extended service intervals. (Source: Technical Specifications for 313 Hydraulic Excavator; 313D Series 2 Hydraulic Excavator Engine documentation)

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

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