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 1004 of 1500

TM 9-2320-273-20

BRAKE SYSTEM.

9-22. SERVICE BRAKES QUICK RELEASE VALVE (Continued).

LOCATION/lTEM

ACTION

REMARKS

A. REMOVAL .

1. Three air lines (2).

2. Two bolts (6), washers (5),

and nuts (4).

3. Valve (3).

B. INSTALLATION.

4. Valve (3).

5. Valve

6. T

W O

3).

washers (5) and nuts (4).

7. Three air lines (2).

C. OPERATIONAL CHECK.

8. Engine.

9. CAB/Brake pedal.

10. Valve (3).

11. Engine.

a. Unscrew and remove.

b. Inspect for:

1. Leaks.

2. Cracks.

3. Damaged threads.

Unscrew and remove.

Remove from bracket (1).

Transfer all components

(elbows, adapters, etc.) to

new valve. Use liquid teflon

on threaded joints.

a. Coat threads with liquid

teflon.

b. Set onto bracket (7) and

install two bolts (6).

Install on bolts (6) and tighten.

Screw on and tighten.

Start up (see TM 9-2320-

273-10). Allow system to

reach operating pressure of

105-120 psi (724-827 kPa).

Press down and release.

a. Check that air exhausts

from valve when brake

pedal is released.

b. Use soap solution to check

for leaks.

Shut down (see

TM 9-2320-273-10).

Replace if necessary.

Second mechanic.

9-84