Fuel Leak on CAT 3126


 Ask Dave / Posted 2 years ago / 621 views

Question: I am trying to identity the assembly on my 3126, that is leaking fuel. Its number is 3126 HEUI, #1WM00636. Engine arrangement is 120-8243 (core AR). Thank you for any help you can provide.

Dave’s Answer: The item your are referring to is the fuel transfer pump CAT # 3126 S/N 1WM. It cannot be repaired and has been discontinued from CAT. It is still available however on E-bay. Look for Fuel Transfer Pump part number 153-0488 that sells for about $32.00 on e-bay. It will work on your engine.


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Fuel System

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