TM 10-4320-226-14
4.13.2. Control Panel Test. (Not used on Model 350 PAWN)
INITIAL SETUP
Test Equipment
Multimeter (appendix B, Section Ill, Item 2)
Tools
General Mechanic’s Tool Kit (appendix B, Section III,
item 1)
Equipment Conditions
Equipment shut down, refer to paragraph 2.5.1.2 or
2.5.2.2.
Control panel cover removed, paragraph 4.13.1.
General Safety Instructions
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.
a.
b.
c.
d.
e.
f.
g.
h.
i.
To prevent rolling or sliding, do not work on equipment that is not securely stabilized.
Ensure both wheels are secure.
Disconnect negative cables from batteries.
Failure to obey these warnings may result in serious personal injury.
Disconnect lead from terminal 2 of K1 and measure resistance between terminals 2 and 7. Resistance should
be approximately 116 Ohms.
Re-connect lead to terminal 2 of K1.
With Emergency Stop Switch (S1) pushed in, connect multimeter between contacts 3 and 4 of S1. Measure for
open circuit.
Pull S1 out, multimeter should indicate closed circuit.
Connect multimeter across Push to Start switch (S2) contacts 2 and 1. Multimeter should indicate open circuit.
Depress switch (S2), multimeter should indicate closed circuit.
Repeat steps e and f for Oil Pressure Bypass switch (S3)
Measure resistance between terminal 1 and 2 of K2. Resistance should be approximately 70 Ohms
Using multimeter set for continuity, refer to figure 4-42 and check wiring.
Change 2 4-81
