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Old 11-12-2009, 06:27 PM   #1 (permalink)
New Member
Minitwins
Favourite Bike: 72 T120 OIF
 
Join Date: Jul 2009
Location: warsash Near Southampton UK
Posts: 13
Other Motorcycle: 1960 5TA
Gearbox Plunger Conversion

Hi,

Having read some of the Posts on this subject I'm thinking of replacing the leaf spring on my 72 650 T120V gearbox in conjunction with other work this winter.

Could someone kindly advise me as to a suitable plunger for this job? Possibly the T140 part might be ok but would be grateful for confirmation of that.

Thanks
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Old 11-12-2009, 07:12 PM   #2 (permalink)
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SuperSport
Favourite Bike: Triumph Bonneville
 
Join Date: Oct 2008
Location: Bordeaux, France
Posts: 1,303
Other Motorcycle: Triumph Speedtriple
Hi brob00,

A earlier (pre 71) or later (73 on) will work, they are identical, both UNF threads. The conversion is quite easy, I did mine a few months ago.
Here are the parts you will need:
The plunger consists of 3 parts, the body, spring and the plunger, you will also want to order the sealing washer.
Part N°s Below:
Plunger Housing: 57-4400
Plunger Spring: 57-4459
Plunger: 57-7020
Sealing Washer: 57-3978

I hope this helps

Webby

Last edited by Webby : 11-12-2009 at 07:14 PM. Reason: Part N°s
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Old 11-12-2009, 07:15 PM   #3 (permalink)
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SuperStock
 
Join Date: Oct 2007
Location: Southern Maryland
Posts: 217
Whats the advantage of this mod?

TD
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Old 11-12-2009, 07:20 PM   #4 (permalink)
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SuperSport
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Other Motorcycle: Triumph Speedtriple
A more positive shift and MUCH EASIER to index the box after a rebuild.
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Old 11-13-2009, 09:18 AM   #5 (permalink)
New Member
Minitwins
Favourite Bike: 72 T120 OIF
 
Join Date: Jul 2009
Location: warsash Near Southampton UK
Posts: 13
Other Motorcycle: 1960 5TA
Smile

Thanks Webby, fantastic, much appreciated.
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