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Old 02-16-2012, 10:35 PM
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rick 427 rick 427 is offline
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when you slowly push in the plunger,it should go in, and return, smooth as silk ,with no hesitation or resistence,other than the spring tension when pushing it in...that plunger is in an aluminum housing,and it shouldn't have any side to side movement as you're pressing it in...what you cant see,however, is the other valve on the other side of the spring...but if that sticks,that usually gives you late shifts....but if the plunger valve is hanging up in the aluminum housing,or not making a smooth full travel, it will give you early/stacked shifts....I would replace that assy on all my rebuilds,as well as place a spring behind the valve that you can't see...because prior to that,even tho they were working nice on the bench,once they got warm on the road they would start hanging up....if your plunger is sticking or rachety,it should be replaced

Last edited by rick 427; 02-16-2012 at 10:45 PM.
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