1
Brakes (Strip & Inspect)
Wheels removed on all axles
Brake drums removed for inspection
Brake linings measured and replaced if below limit
Brake drums machined or replaced if scored
S-cams inspected for wear
Slack adjusters serviced or replaced
Brake chambers tested for leaks under pressure
Park brake springs tested
ABS sensors and tone rings inspected
2
Wheel Bearings & Hubs
Wheel bearings inspected for play and noise
Wheel bearings repacked or replaced
Hub seals inspected and replaced if leaking
Hub oil level checked and topped up (oil-bath hubs)
Wheel stud and nut condition assessed
3
Coupling System (Detailed)
King pin gauge measurement and record
King pin replacement if outside tolerance
Landing gear gearbox stripped and serviced
Landing gear shoes/feet replaced if worn
King pin coupling plate inspected for cracks
Suzie air-lines replaced if degraded
4
Axles & Suspension
Axle alignment verified (laser or string)
Axle camber and toe checked
Spring leaves inspected — replace if cracked
Spring shackle bushes replaced if worn
U-bolts torque-checked (replace if stretched)
Air bags inspected and pressure-tested
Levelling valve tested (where fitted)
Shock absorbers replaced if leaking
5
Air System (Detailed)
All air hoses inspected for cracks and chafing
Air dryer cartridge replaced
Reservoir tanks pressure-tested
Brake valves inspected (relay, emergency, spring brake)
Glad-hand seals replaced
Anti-compounding valve tested
6
Electrical (Full Test)
All wiring looms inspected for damage
Junction boxes opened, sealed and inspected
Trailer plug replaced if connector worn
All bulbs replaced as preventive (where applicable)
ABS module tested (read fault codes)
Earth bonding verified
7
Structure & Chassis
Chassis frame inspected — no cracks at stress points
Cross members secure
Welded joints inspected
Subframe integrity verified
Mud flaps and side guards replaced if damaged
All lashing rings load-tested visually
99Custom Items Found
Add any items inspected outside the standard checklist — workshop-specific or one-off observations.
1Findings Recorded
2Inspector's Notes
1Inspection Outcome
✓
PASS — Trailer Cleared
!
CONDITIONAL — Repairs Needed
✕
FAIL — Trailer Off Road
1Mechanic
Signature *
Draw signature with mouse or touch
2Workshop Manager
Signature *
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3Responsible Person (Acceptance)
Signature *
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4Generate Service Report
Transport Risk Intelligence
Engineering Predictability
✓
Service Report Generated
Your Trailer Quarterly Major report has been generated and downloaded.
TQS-YYYYMMDD-XXX
File the PDF against the trailer record in the TRI Document Portal.
