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32 Pre-Trip Inspection and Daily Maintenance
Condition of Visible Components
•
Rear of engine: not leaking.
•
Transmission: not leaking. If equipped
with oil cooler, check for leaks or that
air-to-air cooler is not blocked.
•
Check drive shaft.
•
Exhaust system: secure, not leaking,
not touching wires, fuel or air tubing.
•
Frame and cross members: no bends,
cracks or breaks.
•
Air tubing and electrical wiring: se-
cured against snagging and chafing.
Step 5: Right Rear Vehicle Area
Dual Wheels, One Or Two Axles
•
Check condition of wheels and rims.
Especially look for cracks, missing
lockrings, bent or broken spacers,
studs, clamps or lugs.
•
Check condition of tires: properly in-
flated, no serious cuts, bulges, tread
wear or any signs of misalignment;
valve stems not touching wheels, rims
or brake drums; valve caps in place
and no objects stuck between the
wheels.
•
Check that both tires are of same type,
for example, not mixed radial and bias
type and that their circumferences are
matched.
•
Check wheel bearing and hub: no obvi-
ous leaking on outside or inside wheel.
Suspension
•
Check condition of springs (leaf or
air), spring hangers, shackles and U-
bolts.
•
Axle alignment.
Brakes
•
Condition of brake drums. With brakes
released, look for a noticeable gap be-
tween lining and drum (This check
cannot be made if dust covers are in
place).
•
Condition of brake hoses: check for
any chafing.
•
Check brake chamber mounting bolts
and brackets.
•
Check slack adjusters and chamber
push rod travel. With brakes applied or
released, look for conspicuously dif-
ferent positions of the slack adjusters.
•
Check spring brakes.
Step 6: Rear Of Vehicle Area
Frame Area
•
Frame or cross members not bent,
cracked or otherwise damaged or
missing.
•
Check that air tubing and electrical
lines are properly secured to the frame
with no damage or chafing.
Lights and Reflectors
•
Tail lights, brake lights and turn signal
lights: operating, clean and proper
color.