DOOR GP-CAB 3579199 - Caterpillar

Never move the battery disconnect switch to the OFF position while the engine is operating. Serious damage to the electrical system could result.
Note: To ensure no damage to the engine occurs, verify that the engine is fully operational before cranking the engine. Do not crank an engine that is not fully operational.
With the battery disconnect switch in the ON position, verify that electrical components in the operator compartment are functioning. Verify that the hour meter is displaying information. Verify that the engine will crank.
Turn the battery disconnect switch to the OFF position.
Verify that the following items are not functioning:
Electrical components in the operator compartment
Hour meter
Engine crankingIf any item continues to function, immediately troubleshoot the faulty condition.
When you service the product, remove the disconnect switch key.
If the product is equipped with a lockout control, secure the lock on the disconnect switch until the product is ready to be operated and all personnel are clear.