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TM 10-4320-343-14
4.13.2.1 Control Panel Test. (Model 350 PAFN only)
INITIAL SETUP
Tools
Equipment Conditions
General Mechanic's Tool Kit, (appendix B
Equipment shut down, refer to
Section III, Item 1)
paragraph 2.5.2.2.
Test Equipment
Multimeter, (appendix B, Section III, Item 2)
General Safety Instructions
To prevent rolling or sliding, do not work on equipment
Materials/Parts
that is not securely stabilized.
Tags (appendix E, Section II, Item 12)
Do not work on equipment without following standard
shop safety precautions.
Test.
WARNING
Do not work on wiring harness with negative battery terminal connected.
To prevent rolling or sliding, do not work on equipment that is not securely
stabilized. Ensure both wheels are secure.
Failure to obey these warning may result in serious personal injury.
NOTE All electrical checks, should be done with both battery cables disconnected.
For
testing
of
other
components
(pressure
gauges,
ammeter,
hourmeter/tachometer) system must be operating.
a.
Check wiring harness assembly for continuity or short(Figure 4-42.1). If defective refer to paragraph 4.12.4.1.
b.
Switch S1.
(1) Close switch (pulled out) and check for continuity between contacts 1/4 and 2/3.
(1) Open switch (pushed in) and check for open circuit between contacts 1/4 and 2/3.
c.
Switch S2.
(1) Close switch (pressed in) and check for continuity between contacts 1/2.
(2) Open switch (released) and check for open circuit between contacts 1/2.
d.
Switch S3.
(1) Close switch (pressed in) and check for continuity between contacts 1/2.
(2) Open switch (released) and check for open circuit between its contacts 1/2.
e.
Relay K1.
(1) Apply positive12 V dc to contact 2 and a ground to contact 7 and meassure for continuity between contacts
1/3 and 6/8.
4-82.2 Change 1
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