TM-9-2320-273-20

TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE

NOVEMBER 1980

TM-9-2320-273-20 - Page 1012 of 1500

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