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Possible Cause

December 2 2017 at 3:18 PM
Andrew  (Login FastFordAndy)

Response to O/T, catastrophic trans failure redux.

There is another reason why some of these transmissions fail like this is not enough gear end clearance. Those who builds these need to put proper end clearance in all the gears for oil to inter and to escape to keep the gear lubed and cool. I have found many that do not have this in 1st, 2nd and 3rd. The 1st gear seizing is usually the rear bearing being pressed on and then not being pushed back towards the rear of the trans once the snap ring is installed. Learned this from hands on experience. I have found some even when this is done is marginal clearance. I keep an array of different thickness thrust shims for 1st and 2nd and then machine the 3-4 slider block for 3rd gear clearance as needed. Hope this helps on the rebuild.

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