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· Black Sunshine
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879 Posts
Discussion Starter · #1 ·
Was on the lift trying to locate an exhaust leak. Had the truck in drive reved to about 1200 rpm and the tranny pukes all over. First guess is the front seal. Had no problem or signs before.. My question is why?? Any insight will help a bunch.
 

· RJ Lightning
Joined
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112 Posts
most common is for the front pump bushing to wear excessively or spin. Sometimes there is too much clearance between the
converter hub and bushing with new parts. I use machine in place bushings when I can get them. With big clearance the seal cant handle the volume of oil getting past the bushing and leaks or even blows out. Engine to trans miss alignment of case to crank or bad flywheel runout are common causes too. Been doing trans work 40 years and seen a lot of this. The modern seals are very good.
 
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