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TM 10-4320-343-14
4.13.2 Control Panel Test (Not used on Model 350 PAFN).
This task covers: Test
INITIAL SETUP
Test Equipment
Equipment Conditions
Multimeter (Appendix B, Section IIl, Item 2)
Engine shutdown, refer to paragraph 2.5.1.2 or 2.5.2.2
Control panel cover removed, paragraph 4.13.1
Tools
General Safety Instructions
General Mechanic's Tool Kit, (Appendix B, Section III,
Item 1)
To prevent rolling or sliding, do not work on equipment
that is not securely stabilized.
Do not work on equipment without following standard
shop safety precautions.
Test.
WARNING
Disconnect negative battery cables from batteries. To prevent rolling or sliding, do
not work on equipment that is not securely stabilizes. Ensure both wheels have
chocks that are secure.
Disconnect negative cables from batteries.
Failure to obey these warnings may result in serious personnel injury.
a.
Disconnect lead from terminal 2 of K1 and measure resistance between terminals 2 and 7. Resistance should be
approximately 116 Ohms.
b.
Re-connect lead to terminal 2 of K1.
c.
With Emergency Stop Switch (S1) pushed in, connect multimeter between contacts 3 and 4 of S1. Measure for
open circuit.
d.
Pull S1 out, multimeter should indicate closed circuit.
e.
Connect multimeter across Push to Start switch (S2) contacts 2 and 1. Multimeter should indicate open circuit.
f.
Depress switch S2, multimeter should indicate closed circuit.
g.
Repeat steps e and f for Oil Pressure Bypass switch (S3).
h.
Measure resistance between terminal 1 and 2 of K2. Resistance should be approximately 70 Ohms.
i.
Using multimeter set for continuity, refer to figure 4-42 and check wiring.
4-82 Change 1
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