Series 3 gearbox problem - Defender Source
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  #1  
Old March 27th, 2012, 10:36 AM
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Cabell Crowther
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Series 3 gearbox problem

I have finally gotten around to working on a barn find series 3 that I've had for a while. When purchased (P.O. expired) the top cover was loosely fitted to the gearbox and a few springs and detent balls were missing. I got those replaced, repositioned the slector shafts and still have no 3 or 4th gear. Is this a syncro issue, selector shaft adjustment or what? The slector shaft seems to travel the appropriate distance and 3rd seems to try to engage with a little grumbling. Fourth doesn't even try. Pops out of second on over-run. 46K on the truck.
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  #2  
Old March 28th, 2012, 04:28 AM
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Tom Rowe
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Before putting it back together did you make sure the selector forks were correctly installed. i.e, not behind or in front of the gears?
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  #3  
Old March 28th, 2012, 08:21 AM
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synchor springs on 3/4 hub may be gone or broken. for the 2nd gear issue try adjusting the 1/2 shift fork one RCH closer to second gear. If you go too far then first will start popping out.

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Before putting it back together did you make sure the selector forks were correctly installed. i.e, not behind or in front of the gears?
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  #4  
Old March 28th, 2012, 09:49 AM
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Cabell Crowther
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Tom, I'm pretty sure I have it in the correct spot but will check it again. Dave, is the spring replacement something that can be done with gearbox in-situ?
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  #5  
Old March 28th, 2012, 01:13 PM
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Ren Ching
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Skinny Pete
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yes. you need a really long pair of needle nose pliers.


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Tom, I'm pretty sure I have it in the correct spot but will check it again. Dave, is the spring replacement something that can be done with gearbox in-situ?
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