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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 1967
Experience:  Owner at DJ Wilson
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I hae a cat 4020d 2001 which wont start with the key but i

Customer Question

I hae a cat 4020d 2001 which wont start with the key but i can start is by jumping it at the starter. Possibly the forward reverse lever not showing neutral. all pwer blocd to the started circuit
JA: We'll do all we can to help. Tell me a bit more about what's going on so the Heavy Equipment Mechanic can help you best.
Customer: Replaced the starter relay
JA: Is there anything else the Heavy Equipment Mechanic should be aware of?
Customer: One started it will not engauge forwards or reverse
Submitted: 11 months ago.
Category: Medium and Heavy Trucks
Expert:  Bradley Martin replied 11 months ago.

What is your serial number so I can pull up the right schematic

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