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 296 of 657
TM 9-2320-260-34-1
3-83. INJECTOR AND VALVE ADJUSTMENT (TORQUE METHOD)
THIS TASK COVERS:
a. Pre-Adjustment Setup
b. Injector and Valve Adjustment
INITIAL SETUP
APPLICABI.E MODELS
All
TOOLS
General mechanic’s tool kit
(Appendix B, Item 1)
Feeler gage (Appendix B, Item 58)
Torque wrench, 3/8-in. dr.
(Appendix B, Item 4)
Torque wrench, 1/2-in. dr.
(Appendix B, Item 3)
REFERENCES (TM)
TM 9-2320-260-10
EQUIPMENT CONDITION
Fuel shutoff valve in OFF position
(TM 9-2320-260-10).
Battery ground cable disconnected
(TM 9-2320-260-20).
Rocker lever housing covers removed (para. 3-14).
Valve crossheads adjusted (para. 3-16).
GENERAL SAFETY INSTRUCTIONS
If task is being performed while engine is in vehicle,
ensure fuel shutoff valve is in OFF position and
battery ground cable is disconnected to prevent
engine from starting.
TM 9-2320-260-20
TM 9-2320-260-34P-1
WARNING
If adjustment is being performed while engine is in vehicle, ensure
fuel shutoff valve is in OFF position and battery ground cable is
disconnected to prevent engine from starting. Failure to do so may
result in injury to personnel.
a. Pre-Adjustment Setup
CAUTION
This procedure is for non-top stop injectors. It is used to prevent
excessive loading of the injector actuating system and possible
failure.
NOTE
Injector plungers are adjusted before valves are adjusted.
Loosening all injector rocker lever adjusting screws and locknuts
will help indicate which cylinders have been adjusted and those
cylinders that still need to be adjusted.
All injectors and valves are adjusted the same. This procedure
covers the injection and valve adjustment for one cylinder head.
1.
Loosen six locknuts (3) one full turn on six injector rocker levers (1).
2.
Loosen six adjusting screws (2) one full turn on six injector rocker levers (1).
3.
Turn accessory drive pulley (5) on gearcase (4) in direction of operating rotation until timing
mark (6), 1-6 “VS”, aline with pointer (7) on gearcase cover (4).
3-244
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