TM 9-2320-279-20-2
Brake and Air System Maintenance Instructions (Cont)
11-39.
TRACTOR PROTECTION VALVE REMOVAL/INSTALLATION (M977, M978,
M984, M985) (CONT).
NOTE
Some vehicles have two nuts, lockwashers,
and screws. Others have two flanged nuts
and screws.
(2)
Install protection valve (2) on
frame (3) with two screws (4),
lockwashers (5), and nuts (6).
(3)
Connect four air lines (7) to
protection valve (2).
(4)
Fasten wiring harness (8) to air
lines (7) and protection valve (2)
with plastic cable ties.
C.
Follow-on Maintenance.
(1)
Start engine and build up air
pressure to 120-125 psi
(827-862 kPa) (TM 9-2320-279-10).
(2)
Check connections for air leaks.
(3)
Shut off engine (TM 2320-279-10).
END OF TASK
II-40. TRACTOR PROTECTION VALVE REMOVAL/INSTALLATION (M983).
This task covers:
a. Removal
c. Follow-on Maintenance
b. Installation
INITIAL SETUP
Models
M983
Test Equipment
None
Special Tools
None
Supplies
References
None
Equipment Condition
TM or Para
Condition Description
TM 9-2320-279-10 Shut off engine.
TM 9-2320-279-10 Air system drained.
Compound, sealing, pipe thread, Item 18,
Appendix C
Special Environmental Conditions
None
Tags, identification, Item 48, Appendix C
Personnel Required
MOS 63S, Heavy wheel vehicle mechanic
General Safety Instructions
None
11-174
Change 2
