TM-9-2320-260-34-1

TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; VOLUME 1 OF 2

JULY 1994

TM-9-2320-260-34-1 - Page 458 of 657

TM 9-2320-260-34-1

8-2. TWIN POPPET VALVE REPLACEMENT

THIS TASK COVERS:

a. Removal

b. Installation

lNITIAL SETUP

APPLICABLE MODELS

All

TOOLS

General mechanic’s tool kit

(Appendix B, Item 1)

MATERIALS/PARTS

T

wo O-rings (Appendix D, Item 296)

Four lockwashers (Appendix D, Item 235)

Two gaskets (Appendix D, Item 129)

Antiseize tape (Appendix C, Item 50)

REFERENCES (TM)

TM 9-2320-260-20

TM 9-2320-260-34 P-1

EQUIPMENT CONDITION

Cab tunnel removed (TM 9-2320-260-20).

GENERAL SAFETY INSTRUCTIONS

Do not disconnect air lines before draining air

reservoirs.

WARNING

Do not disconnect air lines before draining air reservoirs. Small

parts under pressure may shoot out with high velocity, causing

injury to personnel.

1. Remove three air lines (1) from elbows (2).

2. Remove three elbows (2) from twin poppet valve (3).

3. Remove four screws (5), lockwashers (4), twin poppet valve (3), two gaskets (6),

transmission (8). Discard lockwashers (4), O-rings (7), and gaskets (6).

NOTE

Wrap male pipe threads with antiseize tape before installation.

1. Install three elbows (2) on twin poppet valve (3).

and O-rings (7) from

2. Install two new O-rings (7), new gaskets (6), and twin poppet valve (3) on transmission (8) with four

new lockwashers (4) and screws (5).

3. Install three air lines (1) on elbows (2).

8-2