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Old 07-06-2020, 06:16 PM   #4
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Join Date: Jun 2010
Location: San Antonio, Texas
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Default Re: 47 pickup second gear pops out

There are a number of wear locations that can cause a lot of gear movement when the thrust load reverses during engine braking. Gear bushing might be worn, the 2nd gear and mating cluster gear may have a lot of wear on the teeth. The counter shaft may have loose bearings or the thrust washer is shot. The synchro blocker ring may be worn out too. A person would just have to tear it down & have a look. The shifter detents in the tower should also be checked since they do aid in holding it in gear as long as everything else is good to go.

Last edited by rotorwrench; 07-07-2020 at 12:51 PM.
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