CAT oil leak?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by volvodriver01, Jun 10, 2023.

Jun 10, 2023 #1

volvodriver01 Road Train Member

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Usually the one on ur leftside. Ind

0

3126 CAT leaking oil just in front of oil filter. Anyone have an engine diagram. I can't find one online for the passenger side.

volvodriver01, Jun 10, 2023

volvodriver01, Jun 10, 2023

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Jun 11, 2023 #2

062 Road Train Member

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@SmallPackage @wore out

062, Jun 11, 2023

062, Jun 11, 2023

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Jun 12, 2023 #3

SmallPackage Road Train Member

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No diagram. But i’d be pretty confident its the oil cooler gasket leaking. Had to have mine redone a few times over the years. They will just leak over time. The coolers themselves on the earlier 3126B’s were known to crack and mix oil and coolant was common. We never had any issues with the E we had. There is really nothing else on that side to leak besides the turbo supply or return tubes. The water pump is right in front of oil cooler.

SmallPackage, Jun 12, 2023

SmallPackage, Jun 12, 2023

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