TM-9-2320-366-20-1
M1083 SERIES, 5 TON, 6x6, MEDIUM TACTICAL VEHICLES (MTV)
TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; UNIT MAINTENANCE; VOLUME NO. 1 OF 5
FEBRUARY 2006
CHANGE 3
TM-9-2320-366-20-1 - Page 566 of 1824
TM 9-2320-366-20-1
e14. TACHOMETER DOES NOT OPERATE OR IS INACCURATE (CONT)
2.
KNOWN INFO
TEST OPTIONS
Is engine speed sensor free
from damage?
Visual Inspection
REASON FOR QUESTION
A damaged engine speed
sensor will cause
tachometer to malfunction.
NO
Replace engine speed sensor
(para 7-46).
YES
3.
Does tachometer operate
correctly after performing
step 2?
YES
Fault corrected.
NO
Go to step 4 of this fault.
TEST OPTIONS
REASON FOR QUESTION
This question eliminates
possible problems and
determines where
troubleshooting continues.
KNOWN INFO
STE/ICE-R Test #10
Faulty engine speed sensor.
Faulty dashboard cable
assembly.
Faulty auxiliary panel cable
assembly.
Faulty engine control cable
assembly.
Faulty tachometer.
POSSIBLE PROBLEMS
Tachometer illuminates.
VOLTS gage OK.
Engine speed sensor OK
electrically.
Faulty dashboard cable
assembly.
Faulty auxiliary panel cable
assembly.
Faulty engine control cable
assembly.
Faulty tachometer.
POSSIBLE PROBLEMS
Tachometer illuminates.
VOLTS gage OK.
Engine speed sensor OK.
2-360
Change 1
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