May 11th, 2022, 01:47 PM
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-= Extreme Supporter =-
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Join Date: Jun 2013
Location: Greer, SC
Truck: 1964 GMC 1500 2wd
Age: 70
Posts: 471
Thanks: 26
Thanked 13 Times in 9 Posts
Rep Power: 215
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Re: AC PM-9T Filter canister
The spring provide a preload on the filter to keep it seal, due to manufacturing tolerance/and different manufacture.
The oil filter by-pass is made inside the filter base. It is made of phenolic with a spring holding it in place. On top of the base is a large plug where the by-pass get installed, see attached pictures.
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