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 59 of 657
TM 9-2320-260-34-1
3-5. VIBRATION DAMPER MAINTENANCE
THIS TASK COVERS:
a.
Check Runout and Wobble
c. Inspection
b. Removal
d. Installation
INITIAL SETUP
APPLICABLE MODELS
All
REFERENCES (TM)
TM 9-2320-260-10
SPECIAL TOOLS
TM 9-2320-260-20
TM 9-2320-260-34P-1
Engine barring tool (Appendix B, Item 66)
EQUIPMENT CONDITION
TOOLS
Fuel valve in off position (TM 9-2320-260-10).
General mechanic’s tool kit
(Appendix B, Item 1)
Fan blade removed (TM 9-2320-260-20).
Battery ground cables disconnected
Torque wrench, 3/8-in. dr.
(Appendix B, Item 4)
(TM 9-2320-260-20).
Dial indicator (Appendix B, Item 11)
GENERAL SAFETY INSTRUCTIONS
Soft-head hammer (Appendix B, Item 47)
Make sure fuel shutoff valve and ignition switch are
MATERIALS/PARTS
OFF before cranking engine.
Six lockwashers (Appendix D, Item 223)
WARNING
Ensure fuel shutoff valve and ignition switch are OFF before
cranking engine. Failure to do so may result in injury to personnel.
1. Check vibration damper (2) for runout:
a.
b.
c.
Position dial indicator with holding fixture on engine (1).
Position dial indicator plunger on edge of flange (3) and zero dial indicator.
Using engine barring tool, rotate vibration damper (2) and take reading. Replace vibration
damper (2) if reading exceeds 0.025 in. (0.64 mm).
3-7
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