M978 Tanker Maintenance Instructions (Cont)
25-2. GENERAL MAINTENANCE INSTRUCTIONS (CONT).
(2) Inspect all hose surfaces for damaged material. Check for breaks caused by sharp kinks or
contact with other parts of vehicle. Inspect fitting threads for damage. Replace defective parts.
Check for leaks after assembly and during initial vehicle operation period.
(3) Inspect wiring harnesses for chafed or burned insulation. Inspect all terminal connectors for
loose connections and broken parts.
(4) Visually inspect all castings and weldments for cracks.
25-3. 2500 GALLON TANK/DRAIN.
This task covers:
a. Drain 2500 gallon tank.
b. Follow-on Maintenance.
TM or Para
TM 9-2320-279-10 Vehicle system air pressure
built up to 100 psi (690 kPa)
TM 9-2320-279-10 Fuel pumped from 2500
TM 9-2320-279-10 Tanker prepared for
Compound, sealing, pipe thread, Item 18,
Special Environmental Conditions
General Safety Instructions
MOS 63S, Heavy wheel vehicle mechanic
No smoking, flame, sparks and hot or glowing
objects within 50 ft (15 m) of vehicle.
a. Drain 2500 Gallon Tank.
(1) Pull MC MANUAL CONTROL EM VALVE lever (1) back to OPEN position.