Cab and Body Maintenance Instructions (Cont)
16-49.3 TANK VENT DRAIN REMOVAL/INSTALLATION (M978).
Compound, sealing, pipe thread, Item 18.2,
This task covers:
c. Follow-on Maintenance
MOS 63S, Heavy wheel vehicle mechanic
TM or Para
TM 9-2320-279-10 Shut off engine.
Special Environmental Conditions
General Safety Instructions
No smoking, flames, sparks, and hot or glow-
ing objects within 50 ft (15 m) of vehicle.
There are two configurations of vents that may be installed on the tank.
Model A, vent valve and vent drain hose.
Model B, plug only.
Note which configuration is removed to ensure same configuration is installed.
For Model A, perform steps (1.1) through (6).
For Model B, perform step (1) only.