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 302 of 657

TM 9-2320-260-34-1

3-84. TOP STOP INJECTOR PLUNGER TRAVEL ADJUSTMENT

THIS TASK COVERS:

Adjustment

INITIAl SETUP

APPLICABLE MODELS

All

TOOLS

Top stop setting fixture (Appendix B, Item 150)

Holding bracket (Appendix B, Item 152)

Injector plunger link (Appendix B, Item 153)

Injector adjusting tool (Appendix B, Item 154)

TOOLS

Injector locknut wrench (Appendix B, Item 25)

Torque wrench. 3/8-in. dr. (Appendix B. Item 4)

Crowsfoot wrench (Appendix B, Item 151)

EQUIPMENT CONDITION

Fuel injectors cleaned (non-top stop) (para. 5-7),

(top stop) (para. 5-8).

CAUTION

This procedure is for top stop injectors. It is used to prevent

excessive loading of the injector actuating system and possible

failure.

NOTE

Use top stop setting fixture (3822696) to adjust top stop fuel

injector plunger travel.

1. Place deadweight switch (2) in RAISE position.

2. Place plunger switch (3) in UNLOAD position.

NOTE

Air pressure setting must be maintained throughout adjustment

procedure.

3. Turn air pressure adjust knob (1) to adjust air pressure to 77-83 psi (531-572 kPa).

4. Place digimatic indicator (5) and digimatic presetter power switches (4) to ON position.

5. Remove plunger (7) from fuel injector (8).

6. Install compressed spring (11), spring retainer (10), and plunger (7) in fuel injector (8).

7. Thread locknut assembly (9) into fuel injector (8) until locknut assembly (9) contacts fuel injector (8).

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