CHAPTER 16: MAINTENANCE OF M239 SMOKE GRENADE LAUNCHER SYSTEM
16-1 REPLACE SOLENOID VALVE ASSEMBLIES AND BRACKET-Continued
Loosen nut (6) at elbow (7).
Remove fuel line (8) by removing nut (9) from
Remove mounting bracket (11) by removing two
bolts (12) from engine lifting eye (13).
Remove solenoid valves (2) from mounting bracket
(11) by removing four bolts (14) and four flat washers
Place solenoid valves (2) in soft-jaw vise and
disconnect fuel tube assembly (16) from elbow (17).
Remove elbows (17 and 18) from two solenoid
Remove adapter (10) from elbow (18).
Remove pipe nipple (19).
If new solenoid valve is to be used,
check position of electrical connector by
holding valve with inlet port to right side
and outlet port to left side. Electrical
connector must be 45 degrees (°) from
Reposition, if necessary, by placing
solenoid valve in soft-jawed vise and
loosening acorn nut at top of valve.
Position electrical connector and torque
acorn nut to 50 pound-inches (5.6
If new solenoid valves are used, remove protective covers and felt filtering disks (if present) from inlet
and outlet ports.
Bottom surfaces of solenoid valves must be parallel (check on flat surface).
Install pipe nipple (19) between outlet port of one solenoid valve (2) and inlet port of second solenoid valve.
Place solenoid valves (2) in soft-jawed vise.
Install elbow (17) into remaining solenoid valve (2) outlet port with connection end of elbow at 12 o'clock position.