TESTING - TM-10-3930-660-24-10476

TM 10-3930-660-24-1

HYDRAULIC BYPASS SWITCH MAINTENANCE - CONTINUED

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TESTING - CONTINUED

WARNING

This machine must be operated only by authorized personnel who have satisfactorily completed a program

of training which must include familiarity with safe operating procedures, characteristics and a knowledge

of applicable codes, regulations and facilities directives. Untrained personnel subject themselves and others

to the possibility of injury or death from the improper operation of this machine. Understand the equipment,

its function and the controls before operation.

NOTE

To hear the emergency steering pump while the engine is running it may be necessary to go under the vehi-

cle during step 6.

Have assistant start engine (TM 10-3930-660-10). Check that emergency steering pump stops running shortly after

engine is started.

NOTE

Leave engine start switch in RUN position during step 7.

Place auxiliary fuel shut-off switch in the OFF position (TM 10-3930-660-10). Check that emergency steering pump

starts running after engine stops.

Place starter switch in the OFF position (TM 10-3930-660-10).

Place auxiliary fuel shut-off switch in the ON position (TM 10-3930-660-10).

10.

Perform voltage tests on hydraulic bypass switch (1).

NOTE

Leave electrical leads 10 and 91 connected

to switch during steps 11 thru 18.

11.

Attach positive lead of voltmeter to terminal 91 of

switch (1).

12.

Attach negative lead of voltmeter to suitable ground.

13.

Place starter switch in RUN position but do not start

the engine (TM 10-3930-660-10).

14.

Voltmeter should indicate approximately 24 volts.

15.

Start engine (TM 10-3930-660-10).

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16.

Voltmeter should indicate approximately 0 volts.

17.

Stop engine (TM 10-3930-660-10).

18.

Remove voltmeter leads.

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