OPERATION
5-2 / Pre-Trip Inspections
© 2020 Pierce Manufacturing Inc. All Rights Reserved.
5-1.3 Things to Look For During Inspections
Things to Look For During Inspections
Tires
Look for tire problems. It is dangerous to drive with bad tires. Look for problems such as:
• Too much or too little air pressure.
• Bad wear. You need at least 4/32 inch tread depth in every major groove on front wheels. You need 2/32 inch
on other wheels. No fabric should show through the tread or sidewall.
• Cuts or other damage.
• Dual tires that come in contact with each other or parts of the vehicle.
• Mismatched sizes.
• Radial and bias-ply tires used together.
• Cut or cracked valve stems.
• Re-grooved, recapped, or retreaded tires on the front wheels.
Wheels and Rims
Bad wheels or rims could cause an accident. A damaged rim can cause the tire to lose pressure or come off.
Observe the following warning signs:
• Rust around wheel nuts may mean the nuts are loose – check tightness.
• Missing clamps, spacers, studs, and lugs mean danger.
• Mismatched, bent, or cracked lock rings are dangerous.
• Wheels or rims that have had welding repairs are not safe.
• After a tire has been changed, stop a short while later and recheck tightness of nuts.
Brake Drums or Shoes
Inspect brakes for the following:
• Cracked drums or rotors.
• Shoes or pads contaminated with oil, grease, or brake fluid.
• Shoes or pads worn dangerously thin, missing, or broken.
Steering System
Inspect the steering system for the following:
• Missing nuts, bolts, cotter keys, or other parts.
• Bent, loose, or broken parts, such as steering column, steering gear box, pitman arm, toe links, or steering
shafts.
• Check power steering hoses, pump, reservoir, cooler, and fittings for leaks.
• Steering wheel play of more than 10 degrees (approximately 2 inches movement at the rim of a 20-inch
steering wheel) can make it hard to steer.
PRE-TRIP AND DAILY VEHICLE INSPECTIONS
PERFORM DAILY AT THE BEGINNING OF EVERY WORK PERIOD
To Next Page
Loading...
