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Old 07-15-2020, 05:57 PM   #18
Junior Member
Join Date: Jul 2020
Posts: 1
Default Re: 59A Flathead Water Pump Bolt Size?

Hello every body!

I Have installed a refurbished water pump in a 59ab with four stainlet steel fasteners but they seems to loose and the lock washers (grover ones) became flat.
I think that stainlet steel are not hard stress fasteners.

Another question: When you install a refurbished water pump is it necesary to run the engine with out water for a little 2 minutes in order to seat the seal?

Gustavo from Argentina
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