IN-LINE SINGLE CHECK VALVES -706880552

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

4-148. IN-LINE SINGLE CHECK VALVES

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 Ill, Item 1)

Batteries Disconnected (see para 4-114 .)

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

a. Removal.

NOTE

There are four in-line check valves located in the brake system.

Refer to air schematics in Appendix G. One check valve is

located on the lower tank on the passenger side of the vehicle

(front service). The valve is in-line on the forward line. Another

check valve is located in-line on the air tank located in the rear

of the truck above the fuel tank (isolated emergency spring

brake release tank) fed by a black pressure line. The other two

are located on the top tank on the driver's side (rear service).

There is one valve in-line on each end of the tank.

NOTE

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

Appendix G.

(1) Note direction of arrow on check valve body to

ensure correct installation.

(2) Tag and disconnect air line at check valve.

(3) Remove check valve.

b. Installation.

(1) Install check valve making certain that it is installed

correctly with respect to the desired air flow. An

arrow indicating the direction of air flow is cast into

the body of the valve.

(2) Install air line.

Follow-on Maintenance.

(1) Connect batteries (see para 4-114).

(2) Check for leaks as described in para 4-147 .

4-423