A good heavy equipment PM checklist does more than tick boxes. It gives operators and technicians a repeatable way to catch leaks, loose hardware, contamination, wear, and early component failure before they become breakdowns. In mixed fleets, that matters even more: excavators, loaders, dump trucks, cranes, telehandlers, dozers, and compact equipment all have different weak points, but the maintenance logic is the same.
This guide gives you a practical, region-neutral checklist you can adapt to most heavy equipment. Always confirm exact procedures, fluid specs, capacities, and intervals against the OEM service manual for the machine model, serial number, and operating environment.
What a heavy equipment PM checklist should achieve
A useful PM checklist should help you:
- Reduce unplanned downtime
- Extend component life for engines, hydraulics, undercarriage, driveline, brakes, and electrical systems
- Standardise inspections across operators, mechanics, shifts, and sites
- Catch warranty-sensitive issues early
- Build service history that supports repair decisions and resale value
The best checklist is not the longest one. It is the one your team will actually complete, record, and act on.
Core PM checklist structure
For most fleets, split preventive maintenance into four levels:
- Pre-start / daily checks by the operator
- Weekly checks for wear, security, and contamination trends
- Scheduled service checks at engine-hour intervals
- Major periodic inspections for structural, hydraulic, and safety-critical systems
A practical setup is shown below.
Daily heavy equipment PM checklist
These checks usually take 10-20 minutes and should happen before the first shift, with another walk-around at shutdown if the machine worked in severe conditions.
1. Walk-around inspection
Check for:
- Fresh oil, fuel, coolant, hydraulic oil, or axle fluid leaks under the machine
- Damaged hoses, cracked fittings, rubbed hydraulic lines, and loose clamps
- Missing guards, covers, steps, handrails, access panels, and latches
- Broken lights, mirrors, cameras, alarms, beacons, and wipers
- Loose wheel nuts, damaged rims, cuts in tyres, or track shoe damage
- Structural cracks around booms, stick bases, loader arms, articulation joints, counterweights, and chassis welds
- Excessive dirt packed around radiators, coolers, belly pans, steps, or moving linkages
2. Fluid levels
With the machine parked level where possible, check:
- Engine oil
- Coolant in radiator or expansion tank
- Hydraulic oil sight glass or dipstick
- Fuel level and water separator bowl
- Transmission fluid, differential oil, final drive oil, or axle oil where applicable
- Diesel exhaust fluid (DEF) / AdBlue where fitted
- Windscreen washer fluid if relevant
If you need to top up frequently, treat that as a defect to investigate, not normal operation.
3. Filters and contamination indicators
Inspect:
- Air filter restriction indicator
- Hydraulic filter restriction indicators if equipped
- Fuel-water separator for water or sediment
- Breathers on hydraulic tanks, axles, and gearcases
In dusty or muddy work, restriction indicators can move quickly. Do not replace filters only by appearance; follow OEM condition indicators and service intervals.
4. Undercarriage, tyres, and ground-engaging components
For tracked machines, check:
- Track tension or sag against OEM spec
- Track shoe bolts for looseness or missing hardware
- Sprocket wear, roller leaks, idler damage, and link cracking
- Packed mud, rock, wire, or debris in undercarriage
For wheeled machines, check:
- Tyre pressure using the correct cold-pressure procedure
- Sidewall cuts, bulges, exposed cords, chunking, and irregular wear
- Dual spacing and trapped rocks where relevant
For attachments or wear parts, check:
- Bucket teeth, side cutters, adapters, GET retention hardware
- Cutting edges and wear plates
- Fork tines for bending or heel wear
- Hook blocks, wire ropes, slings, and sheaves on lifting equipment
5. Cab and safety systems
Verify:
- Seat belt condition and locking
- Horn, reverse alarm, travel alarm, and emergency stop where fitted
- Fire extinguisher charge and mounting if carried
- Gauges, warning lamps, display faults, and telematics alerts
- HVAC function for defogging and operator visibility
- Parking brake holding performance
6. Start-up and running checks
At idle and during warm-up, watch for:
- Long crank time or hard starting
- Blue, black, or white exhaust smoke beyond normal cold start behaviour
- Low oil pressure, high coolant temperature, low charging voltage, or active fault codes
- Unusual noises: knocking, chirping belts, cavitation, bearing growl, brake drag
- Slow hydraulic response, drift, surging, or excessive pump noise
Any new noise, smell, vibration, or warning should be logged immediately.
Weekly PM checklist
Weekly checks go deeper than operator inspections and are useful for machines running 40-70 hours per week or more.
Lubrication
Grease all scheduled points at the OEM interval, especially:
- Boom, arm, and bucket pins
- Steering and articulation joints
- Drive shaft slip joints and universal joints
- Loader linkage pins and tilt cylinders
- Slew ring grease points where specified
- Stabiliser pins, telehandler boom wear pads, and attachment couplers
Watch for pins that will not take grease. A blocked passage can lead to dry bushings and rapid pin bore wear.
Battery and electrical
Check:
- Battery terminals for corrosion and tightness
- Hold-down brackets
- Cable rub-through near frame and engine vibration points
- Alternator belt condition and tension if not automatic
- Lighting harnesses and connector seals
A healthy 12 V battery at rest is typically around 12.6 V; a 24 V system around 25.2 V, but readings vary with temperature, battery condition, and recent charging.
Cooling package
Inspect and clean:
- Radiator cores
- Charge air cooler
- Hydraulic oil cooler
- Air-conditioning condenser
- Fan guards and fan blades
Use the cleaning direction recommended by the OEM. Blowing debris deeper into the core stack is a common mistake.
Fasteners and wear checks
Spot-check:
- Wheel nut torque or witness marks
- U-bolts and suspension hardware on trucks
- Cylinder mount hardware
- Counterweight bolts
- Attachment coupler locks
- Slew ring mounting bolts where applicable
Scheduled service checklist by engine hours
Exact intervals vary by manufacturer, oil type, duty cycle, sulphur content in fuel, and contamination levels. The table below is a general starting point only.
| Interval | Typical PM tasks |
|---|---|
| Every 250 hours | Change engine oil and engine oil filter; inspect belts; drain water separator; inspect air intake; grease all points; inspect brakes and steering; check battery and charging system |
| Every 500 hours | Replace fuel filters as required; sample or inspect hydraulic oil condition; inspect axle, final drive, and transmission oil levels; inspect mounts, driveline, and hoses |
| Every 1,000 hours | Replace hydraulic return filters if specified; inspect valve lash where applicable; service breather elements; inspect turbo plumbing; check injector lines and exhaust clamps |
| Every 2,000 hours | Change hydraulic oil on some models if not condition-based; change axle/final drive/transmission oils where specified; flush coolant if due by hours; inspect pump case drain trends |
| Every 4,000 hours+ | Major structural and hydraulic inspection; injectors or valve train checks on some engines; slew bearing inspection; hose replacement by age/condition; cooling system overhaul as needed |
For severe service — high dust, frequent idling, short-cycle loading, heavy lifting, high ambient heat, mud, water exposure, or corrosive conditions — shorten intervals based on OEM guidance and oil analysis results.
Component-specific PM points people often miss
Hydraulic systems
Do not just look at the oil level. Check for:
- Hose abrasion at clamp points
- Wetness at crimp collars
- Cylinder rod pitting or scoring
- Rod seal leakage and dirt packing at gland nuts
- Excessive hydraulic oil temperature
- Pump noise, aeration, or foaming in the tank
- Case drain flow trends on pumps and motors where measured
Hydraulic failures often start as contamination, heat, or aeration problems long before a hose bursts.
Engine air intake
Small air leaks downstream of the filter can dust an engine quickly. Inspect:
- Air cleaner housings for cracks
- Clamp tightness
- Intake hoses for soft spots and splits
- Dust ejector valves
- Restriction indicators and seals
Undercarriage on tracked machines
Undercarriage cost can represent a major share of owning a crawler machine. Measure and trend:
- Chain pitch extension
- Grouser height
- Roller flange wear
- Sprocket tooth wear
- Track tension
Too-tight tracks accelerate wear and increase fuel use.
Brake systems
On trucks, loaders, and mobile plant, check:
- Brake fluid level where hydraulic service brakes are used
- Air system moisture and drain valves for air-brake systems
- Hose chafing and chamber leaks
- Parking brake adjustment and holding ability
- Brake lining or pad wear indicators
PM checklist documentation: what to record
A checklist only creates value if defects are recorded clearly enough to act on.
Record at minimum:
- Machine ID and hour meter / odometer
- Date and shift
- Inspector name
- Service type: daily, weekly, 250-hour, 500-hour, etc.
- Defects found
- Severity: monitor, repair soon, remove from service
- Fluids added by type and quantity in litres (gallons)
- Filters changed
- Photos of leaks, cracks, or abnormal wear
- Follow-up work order reference
This is where a CMMS helps. In AM Fleet Integrity, teams can standardise PM forms, trigger scheduled services by hours or dates, and keep defects tied to the machine history so recurring faults are easier to spot.
Common PM checklist mistakes
Avoid these frequent problems:
- Using one checklist for every machine type. A crane, excavator, and articulated dump truck need different critical checks.
- Ignoring small leaks. A damp hose today can become a hose failure under full pressure tomorrow.
- Servicing by memory. Hour-based tasks get missed easily in busy fleets.
- Over-greasing or wrong grease selection. Too much grease can blow seals; wrong base chemistry can shorten component life.
- Skipping cleanliness. Dirt introduced during refilling or filter changes can do more damage than late service.
- Not escalating faults. Operators report issues, but no work order follows.
Simple heavy equipment PM checklist template
Use this as a base template for your fleet:
Daily
- Check for leaks under machine
- Inspect hoses, cylinders, fittings, guards, steps, and handrails
- Check engine oil, coolant, hydraulic oil, fuel, and other machine fluids
- Drain water separator if needed
- Check tyres or undercarriage
- Inspect bucket, forks, coupler, or attachment
- Test lights, horn, alarm, cameras, wipers, and seat belt
- Start machine and check gauges, warning lamps, smoke, noises, and hydraulic response
Weekly
- Grease all lube points
- Clean radiator and cooler package
- Inspect battery, cables, and charging system
- Check wheel nuts, structural fasteners, and coupler locks
- Inspect belts, mounts, and driveline components
- Review fault codes and recurring operator comments
Scheduled service
- Replace fluids and filters due by engine hours
- Take oil samples if your program uses condition monitoring
- Inspect brakes, steering, driveline, and suspension
- Inspect hydraulic filters, breathers, and case drain trends
- Measure undercarriage or tyre wear and record trend
- Update service records and create repair work orders
How to make your checklist work in the real world
Start small and make it consistent. One clear checklist per machine class is better than one oversized checklist nobody finishes. Build in pass/fail fields, fluid quantities, photos, and defect severity. Review completed PMs weekly so open defects do not sit unnoticed.
If you manage more than a handful of assets, digitising the checklist saves time and reduces missed intervals. AM Fleet Integrity can help you assign PM schedules, log defects from inspections, and keep maintenance history organised without relying on paper sheets and memory.
A strong heavy equipment PM checklist is one of the simplest ways to improve reliability. It helps operators know what to look for, gives technicians better fault history, and gives managers a clearer picture of fleet health before downtime spreads across the schedule.
If you want to put this into a workable system, AM Fleet Integrity offers a 14-day free trial. It is a simple way to test digital PM checklists, service scheduling, and maintenance tracking on your own fleet.