Hydraulic System Maintenance Instructions (Cont)
19-13. SELECTOR VALVE REMOVAL/INSTALLATION
This task covers:
c. Follow-on Maintenance
M977 with winch
M978 with winch
M983 without crane
M985 with winch
Oil, lubricating, Item 33, Appendix C
Tags, identification, Item 48, Appendix C
MOS 63S, Heavy wheel vehicle mechanic
TM or Para
TM 9-2320-279-10 Shut off engine.
LO 9-2320-279-12 Hydraulic reservoir
Special Environmental Conditions
General Safety Instructions
There are two kinds of selector valves. Model A is approximately 2 in. (51 mm)
thick at the mounting holes. Model B is approximately 1 in. (25 mm) thick at the
mounting holes. Both are removed the same way.
Tag and mark lines before removal.
Disconnect hydraulic lines (1, 2, and 3).