17. Inspect the fuel tank(s) and fuel line connections. If
so equipped, be sure the fuel tank shutoff valves
are open.
18. Check the fuel level in the fuel tank(s), and be sure
the fuel cap vent area is clean. If so equipped,
check the fuel/water separator for leaks. If needed,
prime the fuel tank system.
19. If so equipped, check the transmission oil cooler for
debris and for leaks.
20. If so equipped, inspect the fifth wheel and check it
for adequate lubrication.
21. If so equipped, inspect the 7-way trailer cable re-
ceptacle(s) for good connections.
22. Inspect the front and rear suspension components
including the springs, shocks, and suspension
brackets.
23. Clean the headlights, rearview mirrors, and the out-
side of the windshield and all window glass. Check
the condition of the windshield wiper arms and
blades.
24. Clean the inside of the windshield, the gauges on
the dash, and all window glass.
25. Check for excessive play at the steering wheel.
26. Adjust the driver’s seat, then align the rearview mir-
rors.
27. Check the seat belts for secure mounting and for
damage.
28. Check the cab interior for loose items and secure
or remove them.
29. Turn on the ignition and start the engine. Be sure
the air- and oil-pressure warning systems, if
equipped, are operating. Leave the engine running.
30. Make sure the electric horn and air horn, windshield
wipers and washer, heater and defroster are oper-
ating properly.
31. Check the operation of the backup alarm if so
equipped.
32. Turn on the lights. Check the operation of all gauge
lights and interior lights. Leave the lights on.
33. Make sure all of the lights are working, including
the brake lights, high- and low-beam headlights,
turn signals, clearance lights, and four-way flashers.
Check the condition of the reflectors. Turn the lights
off.
34. Check the outer surfaces of the cab for visible sur-
face breaks and damage.
35. Inspect the air brake components including the
brake chamber pushrods, air reservoirs, and air
lines.
36. Make sure the brakes are adjusted on all axles.
Pretrip Inspection and Daily Maintenance
9.2
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