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How do I get the sleeve gear bushes out.

Submitted by john_neely on Wed, 22/08/2018
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Commando

Hi

The sleeve gear needs re bushing, I have ordered up the longer type bushes and taken a look at the existing 2 bushes as fitted already, and checked a few previous posts at getting the old ones out which suggests putting the sleeve gear in the freezer to contract the bushes and then try to knock them out.

I have found a socket which fits snugly into the sleeve gear and butts up against the bushes, and given them a test knock which produced nothing, and it seems a lot of bush to move.

I also noted that the 2 bushes as fitted stop short of the clutch side by about 25mm, surely it would make sense to bush it the full length.

Methods to get this out would be appreciated, and fitting but assume I can heat the sleeve gear and press the buses in more easily especially if I freeze them first.

Submitted by christopher_winsby on Wed, 22/08/2018

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The expansion rate of bronze is more than steel so heating would make it tighter. I would use a socket or tube the bush could fit in large washers and a stepped bush that fits the bearing and will pass through gear and some studding or a long bolt. Fit it all to push the bearing into the tube or socket Clamp it up under light pressure and then soak in the freezer. When cold (wearing gloves) take out and tighten thread to move, if it moves then starts to stick put back in freezer and repeat.

Submitted by dan_field on Wed, 22/08/2018

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Mick Hemings uses an old tap and threads it into the bush then puts it in a vice clamps it up and then taps it out, I donât recall the use of a freezer!

Submitted by paul_standeven on Wed, 22/08/2018

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Alternatively you could use a hacksaw blade and cut a slot in the old bush. It will then be an easy job to remove it

Paul

Submitted by john_neely on Thu, 23/08/2018

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Thanks for the information very helpful.

I put the sleeve gear in the freezer for a few hours, having first found a socket that fitted the bush but was not a great fit and with rounded edges where it made contact with the bush, I then found a strong washer that fitted the bush very closley.

Took the sleeve gear from the freezer supported it on the vice, popped the washer over the bush placed the socket over the washer and gave it a light tap and out they both came, very easily.

I plan to warm the sleeve gear, freeze the bushes and use the main shaft with a washer to replace them.

Submitted by christopher_winsby on Thu, 23/08/2018

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Previously john_neely wrote:

Thanks for the information very helpful.

I put the sleeve gear in the freezer for a few hours, having first found a socket that fitted the bush but was not a great fit and with rounded edges where it made contact with the bush, I then found a strong washer that fitted the bush very closley.

Took the sleeve gear from the freezer supported it on the vice, popped the washer over the bush placed the socket over the washer and gave it a light tap and out they both came, very easily.

I plan to warm the sleeve gear, freeze the bushes and use the main shaft with a washer to replace them.

Find a way to make a "Stop" so that it stops at the right place otherwise if it goers in too easy you will be back to getting it out.

Submitted by john_neely on Sat, 25/08/2018

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Hi Chris

All went according to plan, I used the main shaft to drift the bearings into place, they are now too tight so need reaming.......what next.

 


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