2-38. MAINTENANCE OF CHECK VALVE 12253779-1 AND CHECK VALVE
This task covers: a.
Tools and Special Tools
General mechanics tool kit, automotive
( S C 5 1 8 0 - 9 5 - C - N 2 6)
Engine oil (item 15, appx B)
Preformed packing (MS8778-14)
2-154 Check valves removed from
Disassembly and reassembly of
valves should be performed in a
clean, dry, dust-free area to prevent
entry of foreign matter.
Disassembly procedures are writ-
ten for one pressure relief valve,
but apply to both.
These procedures are written and
illustrated for check valves (PN
12253779-1 and 12253779-2). If
your unit has damaged check
valves (PN 10922198-1 or
10922198-2), order check valves
(PN 12253779-1 or 12253779-
2) in accordance with TM 9-
1 Remove spring cap (1) and preformed
packing (2) from pressure relief valve body
(3). Remove preformed packing (2) from
spring cap (1).
2 Remove helical compression spring (4) and
check valve (5) from pressure relief valve