2.1 Vehicle Inspection
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What is the most important reason for doing a vehicle inspection?
What things should you check during a trip?
- Tires, wheels, and rims.
- Lights and reflectors.
- Brake and electrical connections to trailer.
- Trailer coupling devices
- Cargo securement devices
Name some key steering system parts.
(See figure 2.1 on page 37)
- Steering wheel
- Steering shaft
- Gear box
- Tie rod
- Hydraulic fluid reservoir
- Pitman arm
- Drag link
- Steering knuckle
- Steering arm
- Power steering cylinder
Name some suspension system defects.
(See figure 2.2 on page 37)(See figure 2.3 on page 37)(See figure 2.4 on page 37)
- Spring hangers that allow movement of axle from proper position.
- Missing or broken leaves in any leaf spring. If ¼ or more are missing it will put the vehicle “Out of order”, but any defect could be dangerous.
- Broken leaves leaves in a multi-leaf spring or leaves that have shifted so they might hit a tire or other part.
- Leaking shock absorbers.
- Torque rod/ arm, u-bolts, spring hangers, or other axle positioning parts that are cracked, damaged, or missing.
- Air suspension systems that are damaged and/ or leaking.
- Any loose, cracked, broken, or missing frame members
What three kinds of emergency equipment must you have?
- Fire extinguisher
- Spare electrical fuses
- Warning devices for parked vehicles
What is the minimum tread depth for front tires? For other tires?
- - inch tread depth in every major groove on front tires.
- You need 2/32 inch on other tires.
Name some things that you should check on the front of your vehicle during the walk around inspection.
- Condition of the front axle.
- Condition of the steering system
- ---No loose, worn, bent, damaged or missing parts.
- ---Must grab steering mechanism to test for looseness
What should wheel bearing seals be checked for?
That they are not leaking
How many red reflective triangles should you carry?
How do you test hydraulic brakes for leaks?
- Pump the brake pedal three times.
- Then apply firm pressure to the pedal and hold for five seconds.
- The pedal should not move.
Why put the starter switch key in your pocket during the pre-trip inspection?
This one should be common sense
What would you like to do?
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