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 TM 55-1905-220-14-4
3-23. TACHOMETER DRIVE - MAINTENANCE INSTRUCTIONS.
A tachometer drive shaft is installed at the rear of the engine, in the end of a camshaft. A tachometer
drive shaft adaptor is attached to the flywheel housing cover. A special key is used to connect the drive shaft
to the tachometer drive cable adaptor.
This task covers:
a. Inspection
c. Repair
e. Alignment
b. Removal
d. Installation
INITIAL SETUP
Test Equipment
References
NONE
Instrument Panel
Maintenance Instructions.
Equipment
Special Tools
Condition
Condition Description
NONE
NONE
Material/Parts
Special Environmental Conditions
Gasket kit P/N 5196375
NONE
Personnel Required
General Safety Instructions
1
NONE
LOCATION
ITEM
ACTION
REMARKS
INSPECTION
1. Flywheel
a. Tacho-
Inspect for gasket leaks.
Housing
meter drive
b. Electric
Inspect for broken or
tacho-
frayed wiring. Inspect
meter
for damage and wear to
trans-
mitter
2. Engine
Instrument
Start engine and observe
panel
tachometer. If not func-
tioning, refer to para-
graph 3-24 for replace-
ment of tachometer.
3-611
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