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VOLTAGE TEST - TM-9-2320-366-20-10563
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TM-9-2320-366-20-1 M1083 Series 5-Ton 6 x 6 Medium Tactical Vehicles (MTV) Manual
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CONTINUITY TEST - TM-9-2320-366-20-10565
TM 9-2320-366-20-1
e14. TACHOMETER DOES NOT OPERATE OR IS INACCURATE
INITIAL SETUP
Materials/Parts
Equipment Conditions
Wire, Elect, 50 ft (Item 71, Appendix D)
Engine shut down (TM 9-2320-366-10-1).
Personnel Required
Tools and Special Tools
(2)
Tool Kit, Genl Mech (Item 46, Appendix C)
STE/ICE-R (Item 41, Appendix C)
References
Multimeter, Digital (Item 22, Appendix C)
TM 9-4910-571-12&P
Wrench, Torque, 0-75 lb-in. (Item 90, Appendix B)
NOTE
If tachometer does not illuminate, perform
Electrical System Troubleshooting e21.
Tachometer Does Not Illuminate prior to
beginning this task.
START
CAUTION
Read CAUTION
KNOWN INFO
TEST OPTIONS
on following page.
1.
Resistance Test or
Tachometer illuminates.
STE/ICE-R Test #91
VOLTS gage OK.
Is less than 1440 ohms
REASON FOR QUESTION
resistance present from
POSSIBLE PROBLEMS
If resistance is greater than
engine speed sensor
1440 ohms, engine speed
Faulty engine speed sensor.
connector socket 1 to
sensor is faulty.
Faulty dashboard cable
pin 2?
assembly.
Faulty auxiliary panel cable
assembly.
Faulty engine control cable
assembly.
Faulty tachometer.
NO
Replace engine speed sensor
YES
(para 7-46).
Change 1

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