PRESSURE PROTECTION VALVES -706880558

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

4-153. PRESSURE PROTECTION 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 five pressure protection valves located within the air

brake system. Three are located on the top passenger side

tank. One valve is located on the bottom air tank on the

driver's side. The fifth valve is located on the air tank located

on the rear of the truck above the fuel tank.

NOTE

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

Appendix G for additional information.

(1) Tag and disconnect the air lines leading to

and from the pressure protection valve.

(2) Remove the mounting bolts, that secure the

valve.

b. Installation.

NOTE

Check psi rating of valve being replaced. Replace

valve with new valve of equal psi rating only.

(1) Reinstall the mounting bolts and secure the

replacement valve to the vehicle.

(2) Reconnect the air lines to the pressure

protection valves.

Follow-on Maintenance.

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

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

4-429