TM 5-3805-262-20
7-3. AIR BRAKE SYSTEM MAINTENANCE (CONT)
e. Double Check Valve and Stop Light Switch (cont).
CLEANING, INSPECTION, AND REPAIR
Dry cleaning solvent P-D-680 used to clean parts is toxic and flammable.
W e a r p r o t e c t i v e g o g g l e s a n d g l o v e s a n d u s e o n l y i n a w e l l v e n t i l a t ed
a r e a . A v o i d c o n t a c t w i t h s k i n ,
e y e s a n d c l o t h e s a n d d o n ’ t b r e a t he
vapors. Do not. use near open flame or excessive heat and don’t smoke
when using it. Failure to do so could cause serious injury. If you be-
c o m e d i z z y w h i l e u s i n g c l e a n i n g s o l v e n t,
g e t f r e s h a i r a n d m e d i c al
a t t e n t i o n
w i t h l a r g e
with water
( 1 ) C l e a n
i m m e d i a t e l y .
If contact with skin or clothes is made, flush
a m o u n t s o f w a t e r . I f c o n t a c t w i t h e y e s i s m a d e , w a s h e y es
and get medical aid immediately.
all metallic parts using cleaning solvent P-D-680. Dry using clean
c l o t h s .
(2)
Inspect wiring harness terminals (3) wire for cracked or broken insula-
tion or broken wire strands at connection to terminal. Repair cracked or
broken insulation by applying insulation tape to area. If broken wire
strands are seen, cut wire as close to terminal as possible. Cut 1/4 inch
insulation from end of wire taking care not to cut through wire then
crimp new terminal securely onto wire.
( 3 ) I n s p e c t a d a p t e r ( 7 ) , tee (8), and elbow (10) for cracks, breaks, crossed
o r s t r i p p e d t h r e a d s, or other damage. Replace as necessary.
INSTALLATION (SHEET 1 OF 2)
(1)
( 2)
(3)
( 4)
(5)
(6)
If removed, install and tighten elbow (10) in brake treadle and valve
p o r t .
Install and tighten double check valve and stop light switch (9). If
necessary, use slip joint pliers to hold and prevent elbow (10) from
moving.
Install and tighten tee (8) and adapter (7) in double check valve and
stop light switch (9) ports .
Connect and tighten three hose (4, 5, and 6) fittings to tee (8) and
a d a p t e r ( 7 ). Refer to tags applied to hoses during removal to ensure that
connections are correct.
Connect two terminals (3) to double check valve and stop light switch
screw terminals. Refer to tags applied during removal to ensure that
connections are correct.
Install and tighten two washers (2) and nuts (1).
7-68
