Checking Keyswitch And Wiring - WACKER Group LTC 4 Repair Manual

Caterpillar Engine Troubleshooting
6.3

Checking Keyswitch and Wiring

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WARNING
6.3.1
6.3.2
a
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Electric shock hazard. Only qualified personnel should conduct these
tests.
When troubleshooting CAT engines that do not crank, check that the
Or/B wire (a) is connected to the starter solenoid.
Open the control panel and check that the wiring to the keyswitch is
clean and tight. Check that the appropriate wires are connected to the
proper terminals on the back of the keyswitch.
Or
Or/B
19
R/Or
30
R/B
R
17
R/Or R/Or Y
80
LTC Repair
50
A/C
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