Lesson 4/Learning Event 2
Discharge Hoses.
If the discharge hose requires repair (other than the
replacement of gaskets), replace it as a unit. To replace the hose, remove
the gun assembly and adapter from the outlet end of the discharge hose.
Unreel the discharge hose from the hose reel. Disconnect the inlet end of
the hose from the hose-reel connection.
Then notify direct support
maintenance personnel.
Nozzles.
Nozzles that cannot be repaired by replacing the gaskets and
preformed packings will be sent to direct support maintenance.
Gun Assembly.
The gun assembly can be disassembled to replace the ball
valve assembly. Perform the following steps and use figure 14 on page 61 as
a guide to repair the ball valve.
CAUTION
Do not attempt to remove the body cap by using a wrench; it will
permanently damage the body cap. The body cap has wrench flats
on its surface. However, it is not threaded into the body. Two
dowel pins hold the valve body in place.
NOTES
The gun repair kit(TM 3-4230-209-20&P) is actually a ball valve
repair kit. (Repair items 2, 3, 6, 7 and 15, A, figure 14). The
prime-detergent valve and the pump-drain valve are different
types of valves.
Instructions in steps 1 through 7 give repair instructions for
the ball valve shown in A, figure 14.
Instructions in steps 8 through 12 apply only to ABC-M12A1
Decontaminating
Apparatuses
manufactured
after
1969
by
All-Bann.
These apparatuses have the ball valve shown in B,
figure 14.
Step 1. Use a 1/8-inch straight-shank punch (or a 1/16-inch punch) and a
hammer to drive the two pins (13A, figure 14) out of the valve body (12).
Step 2.
Pull the body cap (1) out of the valve body (12).
Step 3.
Remove the O-ring (2), flat washer (17), retainer springs (3),
shims, if present and retainer (4) from the valve body (12).
Step 4.
Rotate the gun handle (8) until it is 90 degrees from the valve
body (12) and tilt the body. The ball (16) will slide out of the valve body
(12).
60
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