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Hydraulic Fan Pump

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Hello All,

I have a 92 SC400, 143K.

We're doing the 150K service a little early, as well as a new water pump, idler, serpentine belt, several seals and gasgets, etc.

There was a tapping noise from the water pump area when we started this.

I read a piece of a post that discusses replacing the bearings in the cooling fan pump (ATF as lubricant.) Not doing so can sieze the pump and destroy your new serpentine belt.

Does anyone know about this? How much of a job is it?

Any insight greatly appreciated


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