TM 5-6675-250-20
2 - 1 0 . T R O U B L E S H O O T I N G ( C o n t i n u e d )
T a b l e 2 - 3 . T r o u b l e s h o o t i n g ( C o n t i n u e d)
M A L F U N C T I O N
TEST OR INSPECTION
CORRECTIVE ACTION
CASES (Continued)
2 . I N O P E R A T I V E P R E S S U R E R E L I E F V A L V E.
Step 1. Check for defective pressure relief valve (1).
a. Apply air pressure to the inside end (2) of the pressure relief valve
(1). If the air pressure is not completely stopped, replace the pressure
relief valve.
b. With air pressure applied to the inside end of the pressure relief
valve, press on the outside end (3). If the air pressure is not relieved,
replace the pressure relief valve (1).
c . U n s c r e w t h e
the case (5), and
pressure relief valve retaining nut (4) from the interior of
remove the valve (1).
d. Install the pressure relief valve (1) with retainer nut (4). Tighten the
nut so that the seal in the valve is compressed and the valve body (6) is
in contact with the lid.
S t e p 2. C h e c k f o r s t r u c t u r a l d a m a g e t o c a s e.
a. Visually examine the case for dents or other structural damage.
b . R e p o r t c o n d i t i o n t o D i r e c t S u p p o r t M a i n t e n a n c e .
2-35
