Fleet Maintenance Checklist

The direct answer: a usable fleet checklist has three tiers, and mixing them up is how checklists die. Tier 1 is what drivers check daily in minutes. Tier 2 is what happens on the scheduled PM rhythm. Tier 3 is what belongs to qualified inspection — and pretending tier 3 items are driver checks is how fleets discover brake problems at roadside inspections. Print this; adapt it to your equipment.

Tier 1 — Daily driver checks (minutes, every day)

• Walk-around: leaks under the truck, tire condition and obvious pressure loss, wheel/lug anomalies
• Lights and reflectors — all of them, trailer included
• Air pressure build and audible leaks; brake feel on the first stop
• Fluid warnings, gauges, and dash lamps at startup — and REPORT them (see our symptom guides for what each one means)
• Coupling: fifth wheel, kingpin, gladhands, safety devices
• Wipers, horn, mirrors, glass
• Load securement per your operation

The point of tier 1 is the write-up: a defect reported today is a scheduled repair; the same defect ignored for a week is a road call.

Tier 2 — Scheduled PM items (on the interval rhythm)

• Oil and filter service with fluid-condition checks (coolant, gear oil, power steering)
• Brake measurements — linings, drums, pushrod stroke/adjustment
• Tires measured (tread, pressures, irregular wear patterns) and rotated per program
• Chassis lubrication; belts and hoses condition
• Battery and charging-system health test
• Air system service — dryer cartridge on schedule, tank drains
• Aftertreatment health check (regen history, soot/ash trend)
• Steering and suspension play checks
• Records updated per unit — findings, measurements, next-due dates (see planning & records)

Tier 3 — Professional inspection territory

• The federal periodic (annual) inspection per unit — requirements here
• California BIT 90-day inspections for qualifying vehicles
• CARB emissions testing on its deadlines
• Anything found in tiers 1–2 that involves brake internals, steering components, wheel-ends, or air-system integrity — measured and repaired by people qualified to certify it

Making it stick

Checklists fail socially, not technically: no consequence path for defects, no rhythm for tier 2, no calendar for tier 3. The fix is boring — a defect book that gets read, a PM schedule the operation controls, and inspection dates on the same calendar. That’s the system this pillar exists to provide; start with the assessment.

Can I use this checklist as my DVIR?

No — your driver-inspection reporting obligations are defined by regulation and your operation’s authority type. This is a maintenance-discipline tool, not a compliance document; keep your DVIR process whatever your compliance guidance says it must be.

How long should we keep maintenance records?

Regulatory minimums vary by regime (federal periodic-inspection reports have their own retention; BIT records generally two years) — but operationally, keep per-unit history for the life of the unit: it’s diagnostic evidence and resale value.