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 250 of 657

TM 9-2320-260-34-1

3-63. CROSSHEAD INSTALLATION

THIS TASK COVERS:

Installation

INITIAL SETUP

APPLICABLE MODELS

MATERIALS/PARTS

All

Lubricating oil (Appendix C, Item 21)

TOOLS

REFERENCES (TM)

General mechanic’s tool kit

(Appendix B, Item 1)

TM 9-2320-260-34 P-1

Torque wrench, 3/8-in. dr.

(Appendix B, Item 4)

Dial indicator (Appendix B, Item 11)

Wire gage (Appendix B, Item 94)

Installation

1.

2.

3.

4.

5.

6.

7.

8.

Loosen adjusting screw (2) one full turn.

Install crosshead (3) on guide (5) so crosshead (3) touches valve stem (4) on side opposite adjusting

screw (2).

Turn adjusting screw (2) until it touches valve stem (6).

Position dial indicator over center of crosshead (3). Zero dial indicator.

Holding crosshead (3) down lightly, turn adjusting screw (2) until dial indicator reads 0.020-0.040 in.

(0.51-1.0 mm). Tighten jamnut (1) 22-26 lb-ft (30-35 N•m).

Using wire gage, measure gap (7). Measurement must be a minimum of 0.025 in. (0.64 mm). Loosen

jamnut (1) and turn adjusting screw (2) clockwise. Tighten jamnut (1) 22-26 lb-ft (30-35 N•m).

Repeat step 6 until gap (7) is correct.

Remove dial indicator from cylinder head (8).

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