Brake and Air System Maintenance Instructions (Cont)
11-40. TRACTOR PROTECTION VALVE REMOVAL/INSTALLATION (M983) (CONT.)
Adhesives, solvents, and sealing
compounds can burn easily, can give
off harmful vapors, and are harmful
to skin and clothing. To avoid injury
or death, keep away from open fire
and use in well-ventilated area. If
adhesive, solvent, or sealing
compound gets on skin or clothing,
wash immediately with soap and
Coat all threads with pipe thread sealing
Install two elbows (1) in protection valve (2).
Install two reducers (3), nipples (4), and tees (5) in protection valve (2).
Install two nipples (6), reducers (7), fittings (8), and elbows (9) on tees (5).
Some vehicles have two nuts, lockwashers, and screws. Others have two flanged nuts and
Install protection valve (2) on bracket with two screws (10), lockwashers (11), and nuts (12).
Connect two trailer connection air lines (13) to fittings (8).
Connect two air lines (14) to elbows (9).
Connect two air lines (15) to elbows (1).
Start engine and build up air pressure (TM 9-2320-279-10).
Check connections for air leaks.
Check operation of protection valve.
Shut off engine (TM 9-2320-279-10).
END OF TASK