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1976 850 t3

M

marc tam

Just got it firing!
Joined
Dec 31, 2015
Messages
4
Location
australia
hi and happy new year to everyone.

i have a t3 which has recently broken its very small gear lever butterfly return spring.
im told its a big job to replace a $5 part....

the question is:
has anyone done this on their bike and is it a difficult or relatively easy job?
are there special tools needed for the job and if i m doing it, what other parts should i
change also during the course of the job?
 
I've done it several times for folks. Yes it is a difficult job. You have to split the bike and remove the gearbox. Also special tools are required. Also while you have it apart several things should be done since you have the bike that far apart. Yes on the special tools. Are you anywhere near Pete Roper's shop? He is the guy I would have do it in your country. I believe he is in NSW so if you are on the other side of the continent that wouldn't be an option. You could also post in the Australia/New Zealand section to find a good shop near you. Going into the gearbox is not for an inexperienced person. Best to have it done, or at least have someone with you who can teach you how to do it.

Now with that covered, what I recommend when doing this is to replace the rear main seal. All seals and o-rings in the gearbox. Also update to the new style 4mm clutch hub design, and replace the input and output bearings of the gearbox with metal cage bearings. If Pete does the job, he will shim the shift drum for optimum shifting.
 
I don't think doing a simple rebuild on the gearbox is that bad as long as you remember which shims went were and Pete has posted written some very good resources posted on This Old Tractor. However having the full kit of factory tools and few people do (I think Charlie does and will forget more than I will know on the subject) helps greatly to do the proper job.

If you are in Australia Pete is in Bungendore. I would have Pete do it just to experience his flamboyant use of the english vernacular! He is a mensch and a character and I regret that I didn't get to meet him and his wife during their whirlwind trip of Canada. We tried but he has an aversion to cities.

Sad that Pete doesn't post anymore but he got tired of dealing with caustic internet nitwits.
 
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