TM9-2330-372-14&P
4-23. REPLACE INTERVEHICULAR HOSE (Fig, 9).
a. Remove the hex head cap screw (16) and clamp (17) securing hose assembly (7)-to front of drawbar.
b. Using a 1-1/16-inch open-end wrench, loosen hose coupling at adapter (8). Unscrew anchor coupling (6) on hose
bracket using 1-inch open-end wrench.
c. Remove hose assembly (7).
d. Install replacement hose in reverse order.
e. Test air system (para. 4-22d).
4-24. AIR FILTER REPLACEMENT AND SERVICING (Fig. 10).
a. Disconnect air hoses from towing vehicle and bleed air system on trailer by opening drain cock on air reservoir.
b. Remove filter assembly (7) as follows:
(1) Remove two 7/16-inch self-locking hex nuts (6) holding "U" bolt (5) in place.
(2) Remove "U" bolt (5).
(3) Remove two hoses from filter assembly by unscrewing connector fittings with a 5/8-inch open-end wrench.
c. Service air filter as follows:
(1) Using a 1-1/2-inch box wrench, unscrew nut (12) from bottom of filter body (14). Hold body with adjustable
wrench.
(2) Remove gasket (11), spring (10), spring centering washer (9), and filter element (8) from filter body. Clean
or replace filter element (8).
d. Reinstall parts in reverse order.
e. Replace filter assembly in reverse order.
f. Test air system (para. 4-22d.).
4-25. REPLACE AIR CHAMBER (Fig. 12).
a. Set parking brakes and block wheels.
b. Disconnect air hoses from towing vehicle (if attached).
WARNING
Wear protective goggles when opening drain cock and avoid air blast or eye injury may occur.
4-20
