Komatsu D155AX-3C(S/N 60001-UP (For EC / Chassis only))
Komatsubulldozerlarge (d80 - )

Komatsu D155AX-3C(S/N 60001-UP (For EC / Chassis only))

Maintenance schedule, common problems & OEM parts breakdown

The Komatsu D155AX-3C (S/N 60001-UP) is a heavy crawler dozer designed for high-production earthmoving. This machine belongs to the D155 series, featuring an S6D140 engine with approximately 302 to 306 hp (225 to 228.2 kW). It operates in a heavy weight class, with operating weights ranging from 84,878 lb (38,500 kg) to 87,083 lb (39,500 kg) depending on configuration. The series includes various iterations such as the AX-3E and AX-5 variants.

Evolution across the D15/D155 series has focused on engine emissions compliance and integrated telematics. While older units lack modern Diesel Particulate Filters (DPF), they remain highly valued in the used market for their robust mechanical simplicity and high drawbar pull. For parts procurement, identifying the specific dash-number generation is critical as hydraulic and engine configurations change significantly between the -3, -5, and -6 series.

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.

Komatsu D155AX-3C(S/N 60001-UP (For EC / Chassis only)) specifications

Engine

Engine ModelS6D140
Number of Cylinders6
Gross Power306 hp (228.2 kW)
Power Measured @1900 rpm
Displacement15.24 L (930.1 cu in)
Engine TypeDiesel, turbocharged
Cooling SystemLiquid-cooled

Weights

Operating Weight84,878 lb (38,500 kg) to 87,083 lb (39,500 kg) varies by configuration

Dimensions

Length W/ Blade26.76 ft (8155 mm)
Length W/O Blade16.34 ft (4980 mm) to 16.37 ft (4999 mm) varies by configuration
Width Over Tracks8.85 ft (2695 mm) to 8.90 ft (2713 mm) varies by configuration
Height To Top Of Cab11.49 ft (3500 mm)
Ground Clearance1.61 ft (490 mm) to 1.84 ft (560 mm) varies by configuration
Length of Track On Ground10.54 ft (3210 mm)
Track Gauge6.89 ft (2100 mm)

Undercarriage

Standard Shoe Size22.05 in (560 mm)
Track Width24 in (610 mm)
Number of Track Rollers Per Side6
Number of Carrier Rollers Per Side2

Performance

Transmission TypePS, HSS (Full power shift)
Maximum Drawbar Pull312 kN (70,154.6 lb)
Top Speed12 km/h

Blades

Standard Blade Width13 ft (3955 mm)
Standard Blade Height67.8 in (1720 mm)
Blade Type OptionsSU, Semi-U, Full-U (Reinforced Type)

Service Capacities

Fuel Tank Capacity560 L (147.96 gal)
Fuel Consumption (Estimated)45 L/hour

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

D155AX-3C(S/N 60001-UP (For EC / Chassis only)) fluids & capacities

SystemCapacityRecommended fluid
Engine Crankcase (w/ filter)15.24 L to 16.0 L varies by configurationVerify with dealer
Cooling SystemNot documented for this exact serial range — verify with your dealerLiquid-cooled; specific fluid name not listed
Fuel Tank560 L (147.96 gal)Verify with dealer
Transmission/Powertrain (Powershift Transmission + Bevel Gear/Steering Compartments)Not documented for this exact serial range — verify with your dealerFull power shift; specific fluid name not listed
Final Drives (each)Not documented for this exact serial range — verify with your dealerVerify with dealer
Hydraulic System/TankNot documented for this exact serial range — verify with your dealerVerify with dealer
GreaseNot documented for this exact serial range — verify with your dealerVerify with dealer

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

Komatsu D155AX-3C(S/N 60001-UP (For EC / Chassis only)) 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 security
  • Drain water from fuel/water separator
  • Monitor air filter restriction indicator
  • Inspect track tension and shoe condition
Every 250 h
  • Change engine oil and filter
  • Grease all blade, ripper, and pivot points
  • Drain fuel filter/water separator
  • Inspect air filter outer element
  • Check belt and hose condition
Every 500 h
  • Replace fuel filter
  • Replace hydraulic return filter
  • Perform battery service and terminal inspection
  • Conduct coolant SCA test
  • Perform oil sample analysis
Every 1,000 h
  • Inspect turbocharger for wear
  • Take hydraulic oil sample
  • Check final drive oil levels
  • Measure undercarriage wear
  • Perform valve adjustment check
Every 2,000 h
  • Change hydraulic system oil
  • Flush and replace engine coolant
  • Service transmission/torque converter oil
  • Perform comprehensive component evaluation
  • Check ROPS bolt torque

Servicing the D155AX-3C(S/N 60001-UP (For EC / Chassis only)) beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize oil wear analysis at every major interval to monitor wear metals like iron and copper. Regularly sample hydraulic oil to track particle counts and oxidation levels. Monitoring coolant pH and SCA concentration prevents engine liner pitting. Use telematics data to identify fault codes and fuel consumption trends before they lead to unplanned downtime.

Corrective & Common Repairs

Address transmission issues immediately if forward or reverse movement becomes unresponsive; inspect joystick controllers for electrical faults. Monitor hydraulic hoses for cracks or leaks to prevent pressure loss. If the engine experiences power loss, inspect the turbocharger and air filter restriction levels. Ensure all cutting edge and end bit bolts are torqued to factory specifications to prevent blade damage.

Overhaul & Rebuild Points

Plan major overhauls around the 2,000-hour mark, focusing on transmission service and hydraulic oil replacement. During component rebuilds, perform a comprehensive evaluation of the final drives and undercarriage components. Inspect structural welds on the boom and ripper for fatigue. Replace worn pins and bushings in the attachment points to maintain effective blade control and machine stability.

Seasonal & Environment Servicing

In high-debris environments, clean radiator and oil cooler fins daily to prevent overheating. During extreme cold operations, verify coolant antifreeze concentrations and inspect battery load capacity. For heavy production in quarries, increase frequency of undercarriage inspections to manage track tension and shoe wear. Ensure all grease points are serviced regularly to protect pivots from dust contamination.

D155AX-3C(S/N 60001-UP (For EC / Chassis only)) common service parts

Part numberPart
14X-911-7750Filter,95Check fitment →
08036-01414Clip,(For Add.Filter)(Except Japan)Check fitment →

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

D155AX-3C(S/N 60001-UP (For EC / Chassis only)) fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
15B0NXTransmission oil filter: CloggingContaminated transmission fluid or overdue filter service interval.Inspect transmission oil condition and replace the oil filter.
15F7KMForward clutch disk abuse: Mistake in operation or settingImproper shifting technique or incorrect clutch pressure settings.Review operator shifting procedures and verify clutch pressure settings per shop manual.
15G0MWR clutch: SlippingLow transmission oil pressure or worn reverse clutch friction discs.Check transmission oil level and inspect clutch pack for wear.
15SBL1R clutch solenoid: Fill HighReverse clutch solenoid is providing a fill signal when the command current is OFF.Inspect reverse clutch solenoid and associated wiring for short circuits or electrical leaks.
15SBMAR clutch solenoid: MalfunctionElectrical failure within the reverse clutch solenoid circuit.Test solenoid resistance and check for power supply continuity.
A000NSEngine overheatLow engine coolant level, radiator blockage, or water pump failure.Check coolant level and inspect radiator for debris or cooling system leaks.
AB00KECharge Voltage Low / Battery Charge Voltage LowAlternator failure, worn drive belt, or battery degradation.Test alternator output voltage and inspect battery health/connections.
B@BAZKEngine Oil Level LowOil consumption, external leaks, or incorrect service interval adherence.Check engine oil dipstick and inspect for visible leaks around the engine block.

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

D155AX-3C(S/N 60001-UP (For EC / Chassis only)) attachments & work tools

Blades

Available configurations include Blade Full-U Dozer (Reinforced Type) and Blade Semi-U Dozer. Specific widths or capacities are not documented for this exact serial range.

Rippers

Options include Ripper Shank (for Giant Ripper), Multi-Shank, and Single-Shank configurations. A multi-shank ripper assembly weighs 266 kg (586.21 lb).

Winches

Not documented for this exact serial range — verify with your dealer.

Drawbars/counterweights

Maximum drawbar pull is 312 kN (70,154.6 lb). Counterweight specifications are not documented for this exact serial range.

Cab/ROPS guarding options

Not documented for this exact serial range — verify with your dealer.

Hydraulic arrangement notes

The machine utilizes a hydraulic system, but specific front or rear tool flow arrangements are not documented for this exact serial range.

All D155AX-3C(S/N 60001-UP (For EC / Chassis only)) assemblies by section

Every catalogued assembly group for the Komatsu D155AX-3C(S/N 60001-UP (For EC / Chassis only)). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Engine Related Parts
Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Engine Related Parts : Air Compressor
20***10Air Compressor A. (Kit)1
20***11Air Compressor Ass'Y1
ND***70Clamp, Tapping1
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Guard
Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Guard : Engine Hood (With Air Conditioner And Perforated) (Noise Suppress Ion Spec.) (With Precleaner)(#60753-)
01***40Bolt (Kit)2
01***55Bolt,(Not Used For Chip Dozer)2
01***20Bolt,(For Mono Lever Steering)28
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Guard : Engine Hood (With Air Conditioner) (Noise Suppression Spec.) (Dynamic)(#60753-)
01***40Bolt (Kit)2
01***55Bolt,(Not Used For Chip Dozer)2
01***20Bolt,(For Mono Lever Steering)28
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Guard : Fan (Blower) (Noise Suppression Spec.For Ec) (Dynamic)(#60753-)
01***20Bolt,(For Mono Lever Steering)2
01***30Bolt,(With Body Positioner)5
01***25Bolt,(Without Rops Guard? Canopy)6
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Guard : Fender Cover (Noise Suppression Spec. Ec)
01***12Bolt - Front Cover Mounting2
01***20Bolt,(For Mono Lever Steering)8
01***25Bolt,(Without Rops Guard? Canopy)14
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Guard : Radiator Guard (Noise Suppression Spec.For Ec) (Dynamic)(#60753-)
01***20Bolt,(Without Rops Guard? Canopy)2
01***25Bolt,(Without Rops Guard? Canopy)9
01***30Bolt,(Not Used When Towing Winch)18
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Guard : Radiator Mask (Noise Suppression Spec. For Ec) (Dynamic)(#60753-)
01***20Bolt,(For Mono Lever Steering)24
01***65Bolt - Return Line And Suction Linehose Clamps18
01***25Bolt,(Without Rops Guard? Canopy)4
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Guard : Radiator Mask (Noise Suppression Spec. For Ec)(#60001-60752)
01***40Bolt2
01***55Capscrew2
01***20Bolt,(For Mono Lever Steering)24
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Guard : Side Cover? L.H. (Noise Suppression Spec. Ec)(#60001-60752)
01***25Bolt,(For Canvas Canopy?Head Guard)17
01***25Bolt,(Without Rops Guard? Canopy)19
01***12Washer,(With Body Positioner)2
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Guard : Side Cover? L.H. (Noise Suppression Spec.)(#60753-)
01***25Bolt,(Without Rops Guard? Canopy)19
01***12Washer,(With Body Positioner)2
01***32Washer,(Not Used With Emergency Str.)15
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Guard : Side Cover? R.H. (Noise Suppression Spec. Ec)(#60001-60752)
01***25Bolt,(For Canvas Canopy?Head Guard)17
01***25Bolt,(Without Rops Guard? Canopy)24
01***12Washer,(With Body Positioner)2
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Guard : Side Cover? R.H. (Noise Suppression Spec.)(#60753-)
01***25Bolt,(Without Rops Guard? Canopy)24
01***12Washer,(With Body Positioner)2
01***32Washer,(Not Used With Emergency Str.)20
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Guard : Under Guard (Noise Suppression For Ec) (Dynamic)(#60753-)
01***35Bolt, Mount Ground Driven Steering Pump8
01***50Bolt,(Without Rops Guard? Canopy)20
01***32Washer,(Not Used With Emergency Str.)8
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Main Frame And Related Parts
Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Main Frame And Related Parts : Main Frame (Noise Suppression Spec.For Ec) (Dynamic)(#60753-)
01***25Bolt,(Without Rops Guard? Canopy)8
01***32Washer,(Not Used With Emergency Str.)8
07***38Plug,(1-Motor Type) (Except Japan)6
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Marks And Plates
Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Mark And Plate (Except Japan) (R.O.P.S.)
09***00Plate? Name,(Limited Supply) (Arabic)1
09***00Plate? Name,(Persian) (Limited Supply)1
09***00Plate? Name,(For Rops)(Except Usa? Canada)1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Mark And Plate (Except Japan) (Seat Belt)
15***30Plate? Caution,Seat Belt1
19***40Plate? Caution,(English) (For Usa? Australia)1
19***60Plate? Caution,(For Spanish)1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Mark And Plate (Rear Side) (Except Japan)
09***00Plate? Mark,Komatsu? Rear (Tilt Dozer)1
09***30Plate? Mark,(For U.S.A. And Puerto Rico)1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (Center Of Gravity)
09***12Plate? Mark,Location Of Center Of Gravity2
19***70Plate? Operating,Handring Position1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (English Ec Spec.)
04***60Screw,Machine Model (For Ec Reg.)14
09***00Plate? Name,Ripper (Limited Supply)2
09***00Plate? Name,Machine Model (For Ec Reg.)1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (English Ec Spec.)(#60001-61047)
04***60Screw,Machine Model (For Ec Reg.)14
09***00Plate? Name,Ripper (Limited Supply)2
09***00Plate? Name,Machine Model (For Ec Reg.)1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (English) (Eu)(#61048-)
04***60Screw,Machine Model (For Ec Reg.)6
09***00Plate? Name,Machine Model (For Ec Reg.)1
09***02Plate? Instruction,Instruction?Engine Stop1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (French And English) (Eu)(#61048-)
04***60Screw,Machine Model (For Ec Reg.)6
09***00Plate? Name,Machine Model (For Ec Reg.)1
09***02Plate? Instruction,Instruction?Engine Stop1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (French Ec Spec.)
04***60Screw,Machine Model (For Ec Reg.)14
09***00Plate? Name,Ripper (Limited Supply)2
09***00Plate? Name,Machine Model (For Ec Reg.)1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (French Ec Spec.)(#60001-61047)
04***60Screw,Machine Model (For Ec Reg.)14
09***00Plate? Name,Ripper (Limited Supply)2
09***00Plate? Name,Machine Model (For Ec Reg.)1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (German And English) (Eu)(#61048-)
04***60Screw,Machine Model (For Ec Reg.)6
09***00Plate? Name,Machine Model (For Ec Reg.)1
09***02Plate? Instruction,Instruction?Engine Stop1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (German Ec/Tbg Spec.)
04***60Screw,Machine Model (For Ec Reg.)14
09***00Plate? Name,Ripper (Limited Supply)2
09***00Plate? Name,Machine Model (For Ec Reg.)1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (German Ec/Tbg Spec.)(#60001-61047)
04***60Screw,Machine Model (For Ec Reg.)14
09***00Plate? Name,Ripper (Limited Supply)2
09***00Plate? Name,Machine Model (For Ec Reg.)1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (Italy And English) (Eu)(#61048-)
04***60Screw,Machine Model (For Ec Reg.)6
09***00Plate? Name,Machine Model (For Ec Reg.)1
09***02Plate? Instruction,Instruction?Engine Stop1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (Portuguese And English) (Eu)(#61048-)
04***60Screw,Machine Model (For Ec Reg.)6
09***00Plate? Name,Machine Model (For Ec Reg.)1
09***02Plate? Instruction,Stopping The Engine1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (Spanish And English) (Eu)(#61048-)
04***60Screw,Machine Model (For Ec Reg.)6
09***00Plate? Name,Machine Model (For Ec Reg.)1
09***02Plate? Instruction,Instruction?Engine Stop1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (Spanish Ec Spec.)
04***60Screw,Machine Model (For Ec Reg.)14
09***00Plate? Name,Ripper (Limited Supply)2
09***00Plate? Name,Machine Model (For Ec Reg.)1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Marks And Plates : Marks And Plates (Spanish Ec Spec.)(#60001-61047)
04***60Screw,Machine Model (For Ec Reg.)14
09***00Plate? Name,Ripper (Limited Supply)2
09***00Plate? Name,Machine Model (For Ec Reg.)1
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Operator'S Compartment And Control System
Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Operator'S Compartment And Control System : Back Mirror
01***20Bolt,(Forwarded Individually Parts)2
14***31Bracket1
14***40Mirror1
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Operator'S Compartment And Control System : Back Mirror (Tbg Spec.)
01***80Bolt,For Weight Adjusting Bolt4
01***32Washer,(Not Used With Emergency Str.)4
14***50Stay2
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Operator'S Compartment And Control System : Lunch Box
01***20Bolt,(For Mono Lever Steering)2
01***50Bolt,(Spark Arrester Spec.)2
01***32Washer,(With Auto Emergency Steering)4
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Operator'S Compartment And Control System : R.O.P.S. Guard (Tbg Spec.)
01***80Bolt, Axle12
01***35Bolt, Mount Ground Driven Steering Pump14
01***32Washer,(Not Used With Emergency Str.)14
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Work Equipment
Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Work Equipment : Angle Blade
01***35Bolt12
01***80Bolt2
01***95Capscrew - M204
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Work Equipment : Blade Full-U Dozer
01***35Bolt,(Not Used With Rops Canopy)4
01***40Bolt (Kit)2
01***90Bolt,(Without Cap)12
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Work Equipment : Blade Full-U Dozer (Reinforced Type)
01***35Bolt,(Not Used With Rops Canopy)4
01***40Bolt (Kit)2
01***90Bolt,(Without Cap)12
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Work Equipment : Blade Semi-U Dozer
01***35Bolt,(Not Used With Rops Canopy)4
01***40Bolt (Kit)2
01***90Bolt,(Without Cap)12
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Komatsu : D155ax-3c(S/N 60001-Up (For Ec / Chassis Only)) : Work Equipment : Blade Semi-U Dozer (Reinforced Type)
01***35Bolt,(Not Used With Rops Canopy)4
01***40Bolt (Kit)2
01***90Bolt,(Without Cap)12
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D155AX-3C(S/N 60001-UP (For EC / Chassis only)) serial number reference

The PIN plate is located on the front frame casting, typically on the operator's left side near the radiator support. To read the prefix, identify the first character of the model designation; for this machine, it is 'D'. Match the serial range in the catalog name with the serial number on the machine plate to confirm the correct version.

PrefixIdentifies
DD155AX-3C (For EC / Chassis only)

Frequently asked questions

What engine is installed in this model?

The D155AX-3C utilizes a Komatsu S6D140 series diesel engine, with displacement approximately 15.2 L (930.1 cu in).

What is the operating weight of the machine?

The operating weight varies by configuration, typically ranging from 84,878 lb (38,500 kg) to 87,083 lb (39,500 kg).

What replaced the D155AX-3 series?

The D155AX-3 was succeeded by later generations in the D155 family, including the D155AX-5 and D155AX-6 series.

What D155AX-3C(S/N 60001-UP (For EC / Chassis only)) owners discuss

What are the common causes for a D1s5AX-3C failing to move in forward or reverse?
Loss of movement in both directions is often linked to low pilot pressure or insufficient volume within the hydraulic drive system. Technicians should inspect the pilot circuit relief valve, which is expected to register between 55 and 60 bar. Additionally, the joystick controller is a known failure point that requires testing.
What electrical issues are frequently reported on this machine series?
Electrical system malfunctions often stem from moisture or dirt accumulation in wiring connectors. This contamination can trigger false error codes on the HMT controller monitor. Have your dealer verify all connector seals and wiring protection features.
What are the typical engine-related performance concerns for the D155AX series?
Operators have reported instances of engine overheating, excessive fuel consumption, and a general lack of power or engine performance. The 15.24L diesel engine is turbocharged and liquid-cooled, with a rated speed of 1800 rpm and an idle speed of 750 rpm.
What maintenance patterns should be monitored regarding the undercarriage and hydraulics?
Common wear patterns include worn or damaged undercarriage components and hydraulic system leaks or failures. The machine utilizes a closed center, load-sensing hydraulic system with a pump flow rate of 560 l/min and a maximum pressure of 350 bar.
What should be checked when buying a used D155AX-3C (S/N 60001-UP)?
Verify the telematics history to check for hour meter rollbacks; any discrepancy greater than approximately 50 hours between logs and the dashboard meter is a significant red flag. Additionally, cross-check the factory serial plate on the front frame casting against the number stamped into the chassis frame to ensure machine integrity.

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

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