Table 4-1 Unit Preventive Maintenance Checks and Services
Within the designated interval, perform checks in the order listed.
S - Semiannually
MI - Miles
ITEM TO BE INSPECTED
(Procedures: Check for and have repaired, filled or
adjusted as needed).
a. XM1063: Adjust brakes (para. 4-46).
b. If possible, perform road test of semitrailer. Observe semitrailer for unusual
or excessive noises that may indicate damage, looseness, defects and
deficient lubrication. Make several stops and observe for side pull, noise,
chatter or other unusual conditions.
c. Inspect and repair brakes as required.
A hot brake can cauase serious burns. Use extreme caution before
attempting to touch brake drum after use. Slowly move hand toward
drum. If drum is overheated, radiated heat will be felt before actually
d.Immediately after road test, cautiously fell brake drums and hubs for
abnormal heat. An overheated wheel hub and brake drum indicates an
improperly adjusted or defective brake or wheel bearing. An abnormally
cool condition indicates an inoperative brake.
Check that RFI shielding seals and contact areas are clean and providing
Clean wheel bearings and repack in accordance with Appendix I, Lubrication
Check for corrosion, moisture, damaged or missing parts.
Check wear of kingpin.