QUICK RELEASE VALVES (QR-1) -706880554

TM 5-4210-233-14&P-1

4-150. QUICK RELEASE VALVES (QR-1)

THIS TASK COVERS:

Removal

Follow-on Maintenance

Installation

TOOLS REQUIRED

EQUIPMENT CONDITION

Tool Kit, General Mechanics, Automotive

Main Engine Shutdown (see para 2-12 .)

(Appendix B, Section lll, Item 1)

APU Shutdown (see para 2-16 .)

Batteries Disconnected (see para 4-114 .)

All Air Tanks Drained (see para 4-157 .)

a. Removal.

NOTE

There are three quick release valves in the brake system. One is

located in-line on the passenger side above the differential of the

forward tandem axle. Another is located in-line on the driver's

side above the differential of the rear tandem axle. The third is

mounted in the center of the first frame crossmem- ber ahead of

the front axle.

NOTE

Refer to locator view in para 4-147 and air schematics in

Appendix G for additional information.

(1) Tag and disconnect air lines from quick release valve.

(2) Remove two mounting bolts and remove valve.

b. Installation.

(1) Mount quick release valve with exhaust port pointing down.

(2) Install mounting bolts.

(3) Reconnect air lines as identified during removal.

Follow-on Maintenance.

(1) Connect batteries

(2) Check for leakage as

described in para 4-147).

4-425