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Fleet PM Interval Guide — what schedule fits your fleet.
There is no single correct PM interval: the right schedule depends on your routes, load weights, and how much you want to gamble between inspections.
Kilometre-based intervals
- Light-duty route (local delivery): PM every 15,000-20,000 km
- Highway fleet (long-haul): PM every 25,000-40,000 km
- Severe service (heavy loads, gravel roads, frequent stopping): PM every 15,000 km
- Always align PM intervals with your annual inspection expiry to avoid gaps
Hour-based intervals
- Engine hour meters are more accurate than odometers for PTO and idle-heavy trucks
- Common interval: every 250-500 engine hours (depends on duty cycle)
- Mixing kilometre and hour-based trucks? Service on whichever comes first
Calendar-based intervals
- Minimum: one full PM per unit per year (aligned with annual inspection)
- Best practice: quarterly PMs for fleets of 10+ units
- Pre-CVSA blitz checks scheduled 2-4 weeks before expected blitz windows
- Winter prep (October-November): fluids, batteries, air system, coolant test
- Spring prep (March-April): post-winter inspection, suspension, corrosion check
What a PM should include
- Oil and filter change (engine, transmission if applicable)
- All fluid levels and condition (coolant, power steering, brake fluid)
- Air dryer cartridge inspection/replacement
- Brake adjustment and stroke measurement
- Tire inspection (tread, inflation, sidewall)
- Lighting and electrical check
- Belt and hose inspection
- Fifth-wheel and coupling inspection
- Undercarriage inspection for leaks, cracks, and loose components
For fleet managers
Questions?
Need help with your fleet compliance?
Call our service desk or send a request. We're happy to talk through any of these topics.