Pre-Trip Inspection With a Departure Deadline and a 'Legally Required Only' Instruction

Must repair before departure

• Front rotors at 24.6 mm against a 25.0 mm minimum, with pads at 3 mm. New pads cannot be installed on a rotor below discard thickness, and machining is not an option. A rotor under minimum on a loaded van making a 900-mile run is a heat-cracking and pedal-fade risk. Rotors and pads, both sides.
• Rear tire with a shoulder puncture at 26 psi. A puncture 15 mm from the shoulder falls in the shoulder zone and is not a repairable location under industry puncture-repair guidelines. Plugging it is a liability, not a repair. Replace the tire.
• Battery at 12.4 V and five years old. 12.4 V at rest is roughly half state of charge, and the cold-cranking margin on a five-year-old battery in a van that will sit overnight before a 6:00 a.m. departure is not something to gamble a schedule on. Load-test cold; replace if marginal.

Repair with documented condition

• Tread at 3/32 on one tire. Above the 2/32 legal limit but wet braking and hydroplaning resistance degrade sharply below 4/32 on a loaded highway vehicle. Document, recommend replacement, and record the customer's decision.
• Serpentine belt with one 3 mm rib crack. Cracks across ribs are early-warning, not imminent failure. Document and schedule.
• Oil life at 4%. Not a roadworthiness item; a 900-mile trip will exceed it. Recommend service now and note the decision.

Defer

• Brake fluid at 3% moisture. Recommend a flush, but it is not a departure blocker on a sealed system with no leaks.
• Coolant at minus 34 C. Acceptable for the season; no action.
• Torn stabilizer link boot. No safety effect on this trip; note for the next service interval.
• Streaking wipers. Driver comfort and visibility; replace now only if the driver reports poor visibility in rain. Cheap enough to just do.

First, separate the two ideas. 'Legally required' is a floor for the operator; it is not the shop's release standard. You are the one signing that the vehicle left your bay in a condition you judged safe.

Rotors: there is no compliant repair that reuses a rotor below discard thickness with new pads. The choice is new rotors and pads, or the vehicle does not leave with a brake job you performed. You cannot machine below minimum, and you cannot pair new pads with a worn, undersized rotor.

Tire: a shoulder puncture is outside the repairable zone by the puncture repair standards the industry works to. A plug or patch here is not a repair you can defend if the tire fails at highway speed with a loaded van.

On paper:

• Written estimate and a written statement of the condition and the risk, with the specific measurements (24.6 mm vs 25.0 mm minimum; puncture 15 mm from the shoulder).
• The manager's instruction, in their words, and their signature acknowledging the recommendation was declined - for the items actually declined.
• For anything the shop judges unsafe to release, document the refusal and the basis. If the vehicle leaves without the brake work, the record must show what was measured, what was recommended, and that the decision was the customer's, made with the numbers in front of them.
• Nothing verbal. A 6:00 a.m. failure with no paperwork becomes the shop's problem.

Sequence (2:00 p.m. to 6:00 p.m., one bay):

1. Pull wheels and measure everything first (20 min). Rotor thickness at several points per rotor, pad measurements, tire pressures, and a cold load test on the battery. Confirm the numbers before committing parts - a measurement made at the counter is a guess.
2. Order parts immediately after step 1, not after teardown: rotors, pads, one tire. Verify the tire is in stock in the correct size and load range; if it is not, that single fact drives the whole schedule.
3. Brakes and tire (about 2 hours). Brakes first because they are the longest job and the one most likely to surface a surprise (seized slide pins, a caliper that will not retract, a hose that needs replacing). Tire mounting and balancing fits around the brake work.
4. Battery (20 min). Load test cold; replace if it fails or is marginal, and register/reset the battery monitoring if the vehicle has it.
5. Oil and filter (30 min) if authorized - it is quick and prevents an overdue interval compounding on the trip.
6. Road test and final check (20 min) with a written record of pad-to-rotor bedding and a re-torque check on the wheel fasteners.

Defer: brake fluid flush (needs time and a second person; schedule on return), stabilizer link boot, belt, wipers if not authorized. Each deferral gets a written note with mileage and a follow-up date, not a verbal 'we'll look at it next time.'

If the tire is unavailable or the brake job finds a seized caliper: call the fleet manager before 4:00 p.m. with the options. Late-afternoon surprises on a 6:00 a.m. departure are decided by whoever communicated first, and that should be you.