A good heavy equipment PM checklist does two jobs at once: it helps mechanics catch developing faults before they become failures, and it gives operators a clear standard for what “serviceable” actually looks like. In mixed fleets, that matters even more. Excavators, wheel loaders, articulated dump trucks, cranes, dozers, graders, telehandlers, and agricultural machines all share the same maintenance risks: contamination, looseness, overheating, under-lubrication, and missed small defects that become expensive downtime.

This guide gives you a practical checklist structure you can use across brands and machine types, then tailor to the OEM manual and your site conditions.

What a heavy equipment PM checklist should cover

A useful PM checklist should not just say “inspect machine.” It should tell the technician or operator exactly what to look at, what condition is acceptable, and what needs follow-up.

At minimum, your checklist should cover:

  • Safety-critical items
  • Fluid levels and contamination checks
  • Lubrication points
  • Wear components
  • Fasteners and structural condition
  • Undercarriage, tyres, or running gear
  • Hydraulic and electrical systems
  • Cooling and air intake systems
  • Recorded defects and corrective actions
  • Service meter hours and next scheduled interval

For fleets with multiple sites and operators, a digital checklist inside a CMMS such as AM Fleet Integrity can help standardise inspections, photos, defect coding, and work order follow-up.

Core PM checklist by interval

The best PM programs split work by interval. Daily inspections catch visible faults. Weekly checks go deeper. Hour-based services handle lubrication, filters, adjustments, and fluid changes.

Daily pre-start checklist

These are operator-level checks before the machine goes to work.

Walk-around

  • Check for fresh fluid leaks under the machine: engine oil, coolant, fuel, hydraulic oil, axle oil, brake fluid where applicable
  • Look for cracked glass, damaged mirrors, bent handrails, loose steps, missing guards, and damaged access panels
  • Inspect attachment condition: bucket, cutting edge, teeth, forks, coupler, hook block, boom tip, or blade
  • Check pins, retainers, keeper bolts, and visible bushing movement
  • Look for loose wheel nuts, damaged rims, sidewall cuts, exposed cords, and abnormal tyre bulging
  • On tracked machines, inspect track tension, missing bolts, cracked shoes, roller leaks, and sprocket/idler wear
  • Check for hose chafing, wet fittings, damaged cylinder rods, and split protective sleeves

Fluids and consumables

  • Check engine oil level
  • Check coolant level in header tank or sight glass only when safe to do so
  • Check hydraulic oil level with boom/implement positioned per OEM procedure
  • Check fuel level and water separator bowl
  • Check DEF/AdBlue level where fitted
  • Verify auto-lube reservoir level if installed

Cab and safety systems

  • Test horn, reverse alarm, lights, beacons, wipers, washers, and camera systems
  • Inspect seat belt condition and latch function
  • Verify fire extinguisher presence, charge status, and mounting security
  • Check gauges and warning lamps at startup
  • Confirm HVAC airflow; poor airflow often points to restricted cab filters
  • Ensure parking brake holds and service brake response feels normal

Running check

  • Start engine and listen for abnormal noise at idle and during throttle-up
  • Watch for excessive smoke, delayed hydraulic response, or warning messages
  • Cycle boom, bucket, steering, brake, and travel functions
  • Check for drift, jerky motion, or unusual vibration

Weekly checklist

These checks are usually done by a mechanic or lead operator.

  • Drain water and sediment from fuel/water separator
  • Clean radiator, charge air cooler, oil cooler, hydraulic cooler, and screen packs
  • Inspect fan belts or serpentine belt condition and tension where adjustable
  • Check battery terminals, hold-downs, isolator switch, and cable rub points
  • Inspect air filter restriction indicator; service only as required by OEM guidance
  • Grease all scheduled lubrication points
  • Check slew ring or articulation joint lubrication condition where applicable
  • Inspect boom, stick, loader arms, chassis, dump body, counterweight mounts, and weld zones for cracks
  • Check wheel nut torque or track shoe bolt condition per OEM interval
  • Inspect brake lines, slack adjusters, accumulators, and park brake function where relevant
  • Check transmission, axle, differential, final drive, and hub oil levels where provided
  • Verify security of underbody guards and belly plates

PM service intervals by operating hours

OEM intervals vary, but the table below works as a planning guide for many heavy machines. Always confirm against the machine manual, oil analysis results, and actual duty cycle.

Interval Typical PM tasks
250 hours Engine oil and filter on many machines, full lubrication service, inspect belts, battery, hoses, driveline, pins and bushes, tyre/track wear, brake function, cooling pack cleaning
500 hours Fuel filters on many diesel engines, hydraulic return or pilot filters on some models, axle/transmission checks, articulation/slew bolt inspection, check engine breather systems
1,000 hours Transmission or hydraulic filter changes on some machines, valve lash check on some engines, final drive/axle oil service on some models, coolant concentration test, more detailed structural inspection
2,000 hours Hydraulic oil sampling, tank breathers, coolant replacement on some conventional coolants, differential/final drive service on some machines, injector and air intake system checks
4,000 hours Hydraulic oil replacement on some fleets depending on contamination control and sampling, swing bearing inspection, pin/bush measurement, engine mount and driveline alignment checks

In severe service — high dust, frequent idling, short-cycle loading, deep mud, corrosive environments, or extreme ambient temperatures — you often need shorter intervals, especially for filters, cooling system cleaning, undercarriage inspections, and lubrication.

Component-specific PM checklist

A strong heavy equipment PM checklist should break out the systems that actually fail in the field.

Engine system

  • Check oil level, oil condition, and service hours since last change
  • Inspect for blow-by increase, crankcase pressure, or oil mist around breather
  • Look for fuel leaks at lift pump, filter head, lines, and injectors
  • Inspect intake hoses for soft spots, splits, and loose clamps
  • Check exhaust mounts, flex sections, and heat shielding
  • Inspect engine mounts for separation or looseness

Cooling system

  • Check coolant level and condition
  • Inspect radiator cap seal and neck condition
  • Pressure wash or air-clean cores correctly from the clean side outward where possible
  • Check fan operation, belt condition, viscous clutch or hydraulic fan control function
  • Inspect hoses for swelling, abrasion, hardening, or coolant staining
  • Test coolant concentration and condition according to coolant type

Hydraulic system

  • Check tank level and breather condition
  • Inspect pump noise, cavitation signs, and slow function complaints
  • Check cylinder rod damage, pitting, leaks, and gland nut security
  • Inspect hoses for blistering, rubbing, wire exposure, and fitting movement
  • Check quick couplers for leakage and contamination ingress
  • Review filter restriction indicators if fitted
  • Sample oil if troubleshooting heat, slow functions, or repeated component failures

Undercarriage, tyres, and running gear

Tracked machines

  • Measure and record track tension to OEM spec
  • Inspect chain wear, shoe condition, grouser height, idlers, rollers, and sprockets
  • Look for seal leakage at rollers and idlers
  • Check frame packing from mud or rock buildup

Wheeled machines

  • Measure tyre pressures cold and compare across the axle
  • Inspect tread wear pattern for alignment, suspension, or inflation problems
  • Check wheel nuts, studs, valve stems, and bead area condition
  • Inspect axle seals and hub temperatures after operation if overheating is suspected

Structure and attachment

  • Inspect high-stress weld areas with good lighting after cleaning
  • Check boom foot, stick base, loader arm pivots, articulation joints, and body hinge points
  • Measure pin and bushing play where wear is suspected
  • Inspect bucket ears, coupler locks, fork heel wear, and crane hook safety latch condition

Electrical system

  • Battery state, charging output, and terminal cleanliness
  • Starter cable condition and engine ground integrity
  • Harness security near articulation points and hot surfaces
  • Condition of relays, fuses, connectors, and weather seals
  • Function of telematics, cameras, beacons, and safety interlocks

PM checklist warning signs that should trigger repair, not just monitoring

Some defects should not sit on a watch list.

Take the machine out of service or escalate immediately if you find:

  • Structural cracks in booms, loader arms, chassis, carbody, or crane sections
  • Brake performance loss, low accumulator charge warnings, or fluid leaks in brake circuits
  • Exposed hydraulic hose reinforcement or burst protection failure
  • Cylinder rod scoring severe enough to damage seals quickly
  • High engine temperature, low oil pressure, or repeat derate events
  • Metal contamination in drained oil or filters
  • Loose wheel nuts, cracked rims, or tyre cord exposure
  • Rapid final drive, hub, or bearing temperature rise
  • Excessive slew bearing play or abnormal turntable noise

How to make the checklist work in real fleets

A PM checklist only helps if people actually use it consistently.

1. Separate inspection from repair

Operators should report condition. Technicians should diagnose and repair. If the checklist mixes both, defects get skipped or written vaguely.

2. Use pass/fail plus notes

For each line item, include:

  • OK
  • Monitor
  • Repair required
  • Not applicable

Add a note field for measurements, leak locations, and photos.

3. Record actual measurements where possible

Examples:

  • Track sag in mm (in.)
  • Tyre pressure in bar (psi)
  • Battery voltage in V
  • Brake lining thickness in mm (in.)
  • Pin or bushing movement in mm (in.)
  • Coolant freeze protection or concentration

Measured condition is far more useful than “looks okay.”

4. Link defects to work orders

If a checklist finds a leaking lift cylinder, missing belly-pan bolts, or a blocked cooler pack, that should become a scheduled corrective task with labour, parts, and priority attached. This is where a CMMS like AM Fleet Integrity helps keep inspection findings from dying in notebooks or messaging threads.

5. Adjust by duty cycle

Two identical machines may need different PM frequency if one is loading abrasive rock for 20 hours a day and the other is lightly handling materials on a clean yard. Build your checklist from OEM guidance, then tighten intervals based on:

  • Dust load
  • Idle percentage
  • Shock loading
  • Travel distance and speed
  • Ambient temperature extremes
  • Washdown frequency and corrosion exposure
  • Operator damage trends

Sample heavy equipment PM checklist template

Use this as a starting structure.

Section Check item Status Measurement/notes
Safety Seat belt, horn, alarms, lights, extinguisher OK / Monitor / Repair
Fluids Engine oil, coolant, hydraulic oil, fuel/water separator OK / Monitor / Repair
Engine Belts, leaks, intake hoses, exhaust, mounts OK / Monitor / Repair
Cooling Core cleanliness, hoses, fan, coolant condition OK / Monitor / Repair
Hydraulics Hoses, cylinders, fittings, pump noise, drift OK / Monitor / Repair
Running gear Tyres or tracks, wheel nuts or shoe bolts, hubs/rollers OK / Monitor / Repair
Structure Cracks, pins, bushes, guards, attachment wear OK / Monitor / Repair
Electrical Battery, charging, harnesses, cameras, switches OK / Monitor / Repair
Service Greasing completed, filters due, next service hours OK / Monitor / Repair

Final thoughts

The best heavy equipment PM checklist is not the longest one. It is the one your team can complete accurately, at the right interval, with clear triggers for corrective action. Start with safety, fluids, lubrication, wear points, and known failure areas for each machine class. Then refine the checklist using breakdown history, oil analysis, repeat defects, and site conditions.

If you want to manage checklists, inspections, and follow-up work orders in one place, AM Fleet Integrity can help organise that process without overcomplicating it. AM Fleet Integrity offers a 14-day free trial if you want to see whether it fits your fleet.