TM 9-2320-273-20
BRAKE SYSTEM.
9-24. RELAY VALVE MAINTENANCE (Continued).
LOCATION/lTEM
ACTION
REMARKS
A. REMOVAL (Continued).
2. Two nuts (1), washers (2),
a. Unscrew and remove.
and bolts (4).
b. Remove valve (5).
B. INSTALLATION.
3. Valve (5).
Transfer alI components
(elbows, adapters, etc.) to
new valve before installation.
Use liquid teflon on joints.
4. Valve (5), two nuts (1),
a. Position against frame
washers (2), and bolts (4).
crossmember (3).
b. Tighten nuts.
5. Pilot line (6), two brake
a. Coat threads with liquid
chamber lines (7) and (8),
teflon.
and supply line (9).
b. Screw into valve (5) and
tighten.
C. CHECKING FOR LEAKS.
6. Engine.
7. Valve (5).
8. Engine.
Start up (see TM 9-2320-273-
10). Allow system to reach
Qperating pressure of 105-120
psi (724-827 kPa).
Apply service brakes and
check for leaks using soap
solution.
Shut down (see
TM 9-2320-273-10) .
9-92