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poprivit

Member

• Nov 23, 2013

• #1

Hi i have a series 3 gearbox in my 80" hybrid. I finally got the engine running after buying it as a non runner project and now the gearbox will only move in reverse about a foot before it locks up! Going forward is better but it's not making happy noises so before i strip it any ideas what to look for apart from broken bits

 

dominicbeesley

Well-Known Member

• Nov 23, 2013

• #2

Sounds like transmission wind up. Is it in low ratio / 4wd? Have you got the same tyres and diffs on front and back?

 

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poprivit

Member

• Nov 23, 2013

• #3

Hi thanks for the reply. It running the same front and back and the box was removed to do a clutch. I have not driven it more than 20m so don't think is wound up and that was in 2wd. I'm thinking it's going to want a rebuild so ill start looking for a spare gearbox to fit.

If anyone has one close to Northants let me know please!

 

Blackburn

Well-Known Member

• Nov 23, 2013

• #4

What happens if you put high / low into nuetral will the rest of the box then operate correctly?

 

jamesmartin

Well-Known Member

• Nov 23, 2013

• #5

look at nut on rear of mainshaft

 

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poprivit

Member

• Nov 23, 2013

• #6

Forward gears appear ok but it has a grinding noise. Have not tried it in neutral but all the linkage moves freely now. I have found a good used box so that will get fitted and ill strip this one out to see what has gone!

 

samc88

Drivels spiritual representative

• Nov 23, 2013

• #7

As James says, look at the rear mainshaft nut. You may find that the tab from the locking washer has sheared allowing the nut to unwind.

 

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poprivit

Member

• Nov 23, 2013

• #8

Ok thanks I'll have a look at that tomorrow