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PM schedule · Dozer

Komatsu D51PXi-24 maintenance schedule

Service intervals, fluids and filters for the Komatsu D51PXi-24. Full specs, part numbers and heavy-duty intervals are in goAardvark.

  • Series -24 (D51EX-24 / D51PX-24 / D51EXi-24 / D51PXi-24)
  • Engine Komatsu SAA4D107E-3
  • Emissions EPA Tier 4 Final
  • Size class 125–150 hp
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Source: Komatsu D51EX-24 / D51PX-24 Operation & Maintenance Manual EENAM03560 · Last verified October 29, 2026 · Always confirm with the operator's manual for your serial number

What's due next?

Enter the hour meter (SMU) reading to see what's coming up.

hr

  • 1,000 hr service

    Includes 500 hr, 250 hr

    at 3,000In 160 hr

  • 250 hr service

    at 3,250In 410 hr

  • 500 hr service

    Includes 250 hr

    at 3,500In 660 hr

  • 250 hr service

    at 3,750In 910 hr

Shows the next four service stops. Red means due within 50 hours; amber, within 250. goAardvark tracks this automatically from telematics hours, across every make in your fleet.

The short answer

On the Komatsu D51PXi-24, change the engine oil every 500 service hours. Change the hydraulic oil every 2,000 hours. The engine oil system holds 16 L (4.2 US gal).

Service intervals

Pick an interval. Each service includes everything from the shorter intervals that fall on the same hour.

Every 50 hours

0 of 2 done

+2 heavy-duty or special-condition intervals are in goAardvark.

Fluids and capacities 3 of 6 shown

SystemSpecCapacity
Engine oil—16 L4.2 gal
Hydraulic tank—64 L17 gal
Fuel tankUltra-low-sulfur diesel (10 ppm max)270 L71.3 gal
Cooling systemAvailable in goAardvarkAvailable in goAardvark
Final drive (each side)Available in goAardvarkAvailable in goAardvark
DEF tankAvailable in goAardvarkAvailable in goAardvark

3 more systems with specs and capacities are in goAardvark.

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Filters 2 of 13 shown

FilterPart numberChange at
Engine oil filterAvailable in goAardvark500 hr
Hydraulic oil filterAvailable in goAardvark2,000 hr
Fuel prefilterAvailable in goAardvarkAvailable in goAardvark
Fuel main filterAvailable in goAardvarkAvailable in goAardvark
HST oil filterAvailable in goAardvarkAvailable in goAardvark
Air cleaner elementAvailable in goAardvarkAvailable in goAardvark
Hydraulic tank breather elementAvailable in goAardvarkAvailable in goAardvark
Fuel tank breather elementAvailable in goAardvarkAvailable in goAardvark
DEF tank breather elementAvailable in goAardvarkAvailable in goAardvark
KCCV filter elementAvailable in goAardvarkAvailable in goAardvark
DEF filterAvailable in goAardvarkAvailable in goAardvark
A/C fresh air filterAvailable in goAardvarkAvailable in goAardvark
A/C recirculation air filterAvailable in goAardvarkAvailable in goAardvark

All 13 filters with part numbers are in goAardvark.

Unlock full specs

Fleet PM snapshot

Add up to 5 machines to see when each one hits its next service. This is free and needs no sign-up.

MachineHours nowHours per weekNext serviceAround

1,000 hr at 3,000

160 hr
Dec 8
1 of 5 machines
This snapshot is out of date as soon as the machines run. If your Komatsu D51PXi-24 runs 52 hr a week instead of 40, its service lands around Dec 2. If it sits at 24 hr a week, around Dec 27. goAardvark reads real hours from Cat, Deere, Komatsu and Volvo telematics every day, so the dates stay right.
See it live with your fleetRequest a demo and we'll show these machines in goAardvark.

Official Komatsu maintenance resources

ManualFree account

My Komatsu portal (manuals, parts books, software)

Komatsu's customer portal gives owners online access to parts and service manuals, machine data and parts ordering.

Fluid analysisThrough dealer

Komatsu Oil and Wear Analysis (KOWA)

Komatsu's oil sampling program analyzes lubricants at Komatsu labs to flag wear and contamination before failures.

TelematicsFree account

Komtrax via My Komatsu

Komtrax machine data, maintenance reminders and health alerts are viewed in the My Komatsu portal.

Maintenance guideThrough dealer

Komatsu CARE complimentary maintenance

New Komatsu machines get factory scheduled maintenance at set hour intervals for the first 3 years or 2,000 hours.

CoveragePurchase

Komatsu CARE Plus, Plus II, Plus III and Care Advantage

Paid plans that extend scheduled maintenance and add repair coverage beyond the standard warranty.

PartsThrough dealer

Komatsu CARE preventive maintenance kits

Packaged genuine filter and parts kits for planned maintenance, requested through a Komatsu distributor.

PartsFree account

Komatsu genuine parts and filters

Komatsu's parts catalog covers genuine filters, fluids and reman components, with online ordering through My Komatsu.

PartsFree

Komatsu quick reference parts guides

Model-specific PDF guides listing maintenance part numbers, fluids and capacities for selected Komatsu machines.

Your D51PXi-24 isn't the only machine due for service

Most fleets run several makes side by side. Each has its own manual, intervals and telematics portal. goAardvark pulls hours from all of them and builds one PM schedule for the whole fleet.

Book a demoSnapshot my fleet

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Frequently asked questions

Every 500 service hours under normal operating conditions. Confirm the interval for your serial number in the operator's manual.

Sources

Komatsu and other product names are trademarks of their owners. goAardvark is not affiliated with any equipment manufacturer. This page summarizes public information for planning; your operator's manual is the authority for your serial number.

Preventive maintenance · Field checklist

Komatsu D51PXi-24 PM checklist

Unit #
Serial number
Hour meter
Technician
Date

50 hr

Service taskComponent
Grease lubrication pointsMachine
Grease equalizer bar center pinUndercarriage

250 hr

Service taskComponent
Grease lubrication pointsMachine
Grease equalizer bar side pinsUndercarriage
Check final drive oil levelDrivetrain
Check battery electrolyte levelElectrical
Check brake performanceBrakes

500 hr

Service taskComponent
Change engine oil and filterEngine
Replace fuel prefilterFuel
Replace air conditioner fresh and recirculation filtersCab
Check wiring around starter and alternatorElectrical

1,000 hr

Service taskComponent
Change final drive oilDrivetrain
Replace fuel main filterFuel
Replace fuel tank breather elementFuel
Check engine intake pipe clampsEngine
Replace hydraulic tank breather elementHydraulics

2,000 hr

Service taskComponent
Change hydraulic oil and replace hydraulic and HST oil filtersAlso clean the hydraulic tank strainer.Hydraulics

4,000 hr

Service taskComponent
Replace defined life partsMachine
Check water pumpCooling
Check fuel spray prevention caps for missing caps or hardened rubberFuel

4,500 hr

Service taskComponent
Clean DEF tank and tank mounting areaAftertreatment

8,000 hr

Service taskComponent
Replace fuel spray prevention capsFuel

9,000 hr

Service taskComponent
Replace DEF hoseAftertreatment

When required

Service taskComponent
Check, clean or replace air cleaner elementEngine
Clean inside of cooling systemCooling
Check and clean radiator and oil cooler finsCooling
Check and adjust track tensionUndercarriage
Check and tighten track shoe boltsUndercarriage
Check idler oil levelUndercarriage
Adjust idler clearanceUndercarriage
Reverse or replace cutting edges and end bitsLinkage
Clean hydraulic tank breatherHydraulics
Clean fuel tank breatherFuel
Check and service air conditionerCab
Adjust shims at blade center ball and pitch ballLinkage

Source: Komatsu D51EX-24 / D51PX-24 Operation & Maintenance Manual EENAM03560. Always confirm with the operator's manual for your serial number.