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 TM 5-1940-277-20
TM 1940-20/2
3-112. ENGINE HOUR METER TEST INSTRUCTIONS MK1 AND MK2 W/SABRE
TOOLS: Voltmeter
REMOVE:
1.
Open and secure battery hatch (refer to paragraph 3-154).
2.
Disconnect batteries (refer to paragraph 3-89).
3.
Disconnect quick-disconnect connectors (1) from base of hour meter (2).
4.
Unscrew knurled nut (3) securing brace (4) to hour meter.
5.
Remove hour meter.
6.
Touch voltmeter probes to hour meter terminals.
7.
A positive voltmeter reading indicates that the hour meter is defective.
8.
Replace engine hour meter (refer to paragraph 3-113).
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