TM 5-1940-321-13&P
CAUTION
Do not allow neoprene parts such as gaskets and diaphragm to come in contact
with toluene.
( 6 ) Wash the metal valve cap and metal valve insert in toluene. Clean using a
brush. Threads must be very clean. Rinse in toluene.
( 7 ) Clean the metal valve body remaining in the keel using a brush and towel
dampened with toluene. Threads must be very clean. Verify that no lint remains
in the threads.
( 8 ) The old valve insert diaphragm may be reinstalled if serviceable. Otherwise a
new diaphragm must be installed. Replace diaphragm in the metal valve insert.
First, insert the stem of the diaphragm by hand (figure 5-16), then use needle
nose pliers to pull the stem through valve insert until disk end of diaphragm is
seated in place as shown in figure 5-17.
( 9 ) Replace the ring-shaped flat neoprene valve insert gasket on the metal valve
insert.
( 10 ) Screw the metal valve insert into the valve body until firmly hand tight (do not
use tools).
( 11 ) Install the valve cap gasket in the valve cap. If the gasket is being reused, the
ring-shaped wear marks should be positioned toward the inside of the cap.
( 12 ) Inflate the keel to 220-240 mb (3.2-3.5 psi). See chapter 2, paragraph 2-3b.
( 13 ) Replace the metal valve cap onto the keel valve and tighten firmly, hand tight.
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