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TM 5-4210-220-12
4-18. PUMP, PIPING, AND VALVES - Continued
4-18 8 Automatic and Manual Drain Valves.
This task covers
a.
Replacement
TOOLS
MATERIALS/PARTS
Tool Kit, Master Mechanic,
22, Appendix E Pipe Sealant
NSN 5180-00-699-5273
00053720 Auto Drain Valve
311467-02 Manual Drain Valve
EQUIPMENT CONDITION
All Piping Drained
Main Engine Shutdown (see para. 2-10)
APU Shutdown (see para. 2-12)
Batteries Disconnected (see para. 4-24)
An automatic drain valve is installed on roof turret and bumper turret. Manual drain valves are installed on
each discharge valve, the pump discharge pipe, and the turret water line beneath the engine. Pump body heat
shield must be removed to access the pump. A similar valve is also Installed on the hose reel. Remove hose reel
cover to access.
REPLACEMENT
a Automatic Drain Valve Replacement
(1)
Remove the automatic drain valve (1) and discard.
(2)
Inspect new valve and fitting threads for stripped threads or other
damage. Replace any component failing inspection.
(3)
Apply pipe sealant (item 22, Appendix E) to the threads and install
automatic drain valve.
b.
Manual Drain Valves Replacement (1). Remove remote handle from drain
valve.
(2)
Remove manual drain valve (1) and discard.
(3)
Inspect new valve and fitting threads for stripped threads or other
damage.
(4)
Apply pipe sealant (item 22, Appendix E) to the threads and install
manual drain valve (1). Be sure the handle is easily accessible and not
interfering with any other components.
(5)
Install remote handle on drain valve.
4-238/(4-239 Blank)
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