TM 9-2320-273-20
BRAKE SYSTEM.
9-30. EXTERNAL AIR COUPLINGS MAINTENANCE (Continued).
LOCATION/lTEM
ACTION
REMARKS
A . R E M O V A L.
1. Couplings (1) and
Unscrew and remove from
Tractor to trailer
couplings adapter (2).
hoses (3).
connections.
2. Shutoff valve (4).
Unscrew from coupling (1),
Front and rear connections.
coupling adapter (2), hose
(3) and bracket (5).
3. Hose (3) and shut-off
Inspect for:
Replace if necessary.
valve (4).
a. Leaks.
b. Cracks.
c. Damaged fittings.
d. Smooth valve handle
operation.
B.
INSTALLATION.
4. Couplings (1) and
couplings adapter (2).
5. Shutoff valve (4).
a. Apply liquid teflon
Tractor to trailer
to threads,
connections.
b. Screw on hoses (3).
a. Apply liquid teflon
Front and rear
to threads.
connections.
b. Install thru bracket(s) to
coupling (1), coupling adap-
ter (2), and hose (3).
9-116
