US Army, Technical Manual, SCHEDULED MAINTENANCE, ORGANIZATIONAL LEVEL, 5-TON, 6X6, M39 SERIES TRUCKS, (MULTIFUEL), TRUCK, CHASSIS: M40A2C, M61A2, M63A2; ... MEDIUM: M543A2, TM 9-2320-211-20-1, 1980

US Army, Technical Manual, SCHEDULED MAINTENANCE, ORGANIZATIONAL LEVEL, 5-TON, 6X6, M39 SERIES TRUCKS, (MULTIFUEL), TRUCK, CHASSIS: M40A2C, M61A2, M63A2; TRUCK, CARGO: M54A2, M54A2C, M55A2; TRUCK, DUMP: M51A2; TRUCK, TRACTOR: M52A2; TRUCK, WRECKER, MEDIUM: M543A2, TM 9-2320-211-20-1, 1980

General. The best way, to maintain vehicles
covered by this manual is to Inspect them on a regular
basis so minor faults can be discovered and corrected
before they result in serious damage. failure. or injury.
This section contains systematic instructions for
inspection. adjustment. and correction of vehicle
components to avoid costly repairs or major
breakdowns. This is preventive maintenance checks
and services (PMCS).