Hydraulic System Maintenance Instructions (Cont)
FLOW PRIORITY VALVE REMOVAL/INSTALLATION (M978, M984, M1977-CBT).
This task covers:
c. Follow-on Maintenance
M978, M984, M1977-CBT
TM or Para
LO 9-2320-279-12 Hydraulic reservoir drained.
Stowage box removed
Tags, identification, Item 48, Appendix C
Special Environmental Conditions
General Safety Instructions
MOS 63S, Heavy wheel vehicle mechanic
There are two kinds of valves. Model A uses spacers and 3 in. (76 mm) mounting
screws. Model B does not use spacers and has 2 in. (51 mm) mounting screws. Both
valves are removed the same way.
Spacers are mounted between valve and bracket on Model A only.
Tag and mark hoses before removal.
Disconnect three hoses (1, 2, and 3).
Remove two nuts (4), lockwashers (5), valve (6), two spacers (7), and screws (8).