Pre-start inspection findings on a tipper
Before a morning start you conduct a walk-around on a six-axle tipper. You find: a small oil weep at the rear hub seal on the left-hand drive axle, one tyre on the trailer with a shallow sidewall cut that does not expose cord, a brake line with chafing where it passes a bracket, an air-pressure gauge that sits at 620 kPa after the engine has been running for several minutes, and a rear marker light that is out. The truck is booked for a 300 km highway run with a full load. The workshop is 15 km away and opens in an hour.
1. Sort each finding into 'do not drive', 'drive to repair only' or 'monitor', and justify the brake line and air pressure items specifically.
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A defensible sorting:
- Brake line chafing - do not drive until inspected. A chafed line can fail under pressure or vibration. Brake failure on a loaded six-axle tipper is catastrophic, and you cannot tell from a visual check how deep the damage is. This is a defect that requires assessment by a competent person before the vehicle moves under load.
- Air pressure at 620 kPa after running - investigate before driving. A healthy heavy vehicle air system should build to its governed pressure (commonly around 800 kPa or higher, per the manufacturer's specification) and hold it. Sitting at 620 kPa suggests a leak, a failing compressor or a governor fault. Low air pressure means reduced braking performance and possible spring-brake drag; do not accept it as normal.
- Rear hub oil weep - drive to repair only, monitor. A small weep is not an immediate failure, but it can contaminate brakes and indicates a seal degrading. Have it checked at the workshop.
- Shallow sidewall cut without exposed cord - monitor, but get it assessed. If cord is visible or the cut is deep, it becomes a do-not-drive defect.
- Marker light out - drive to repair. It is a lighting defect that must be fixed, but it does not by itself make the vehicle unsafe to move to the workshop.
The brake line and air pressure items together mean the vehicle should not take the 300 km run as loaded; resolve them first.
2. Explain how you would document and communicate these findings, and what you would tell the operator about the booked run.
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Documentation should be contemporaneous and specific:
- Record each defect on the pre-start inspection sheet with location, description and your assessment (e.g. 'LH drive axle hub seal weep, minor', 'brake line chafed at bracket, do not drive').
- Photograph the brake line chafing and the gauge reading so there is evidence if the vehicle is later driven.
- Notify the operator and workshop immediately, not at the end of the day, so the run can be replanned.
Communication to the operator: the vehicle is not fit for the 300 km loaded run until the brake line is inspected and the air pressure fault is diagnosed. The other items can be scheduled for repair. The operator should either provide a replacement vehicle or delay the run; the client should be told the delivery is at risk for safety reasons.
Do not sign off the vehicle as roadworthy to save the booking. If you are pressured to drive it, record that pressure and refuse - the defect record and your notification are your protection.