Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) (Con't).
ROAD TEST (Con't)
Cautiously feel each wheel hub and drum. Wheel hubs or drums may be
hot. Failure to follow this warning may result in burns.
Check drums and wheel hubs (14) immediately after road test; check for a drum and wheel
hub that is hotter or cooler than the others. An overheated drum and wheel hub indicates an
improperly adjusted or defective service brake or dry wheel bearing. An abnormally cool
condition indicates an inoperative service brake.
4-8 Change 2