Question about Triumph Bonneville Motorcycles

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Do you have wiring diagram for 1976 T140 triumph?

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Posted on Jan 02, 2017

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SOURCE: T140 Triumph 750 Bonneville Oil Pressure

Before listening to the doom merchants try this first. Make sure the oil seal in the timing case (not points cover - the crankshaft one) is the right way round (spring side showing) and seated OK. When fitting case oil up the seal well and turn engine over (plugs out) while tapping the case home gently with your fist - if this seal is not dead right it will alow enough oil passed it to throw the pressure switch open without causing any damage. Had my T140 32 years. 

Posted on Sep 04, 2009

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SOURCE: the best way to clean and polish the bonneville

I would recommend using Gunk engine degreasant, rinse off and followed with a light coating of WD40.

Posted on Jun 29, 2009

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SOURCE: T140 1976 Triumph wiring info needed

try this,192c176.jpg

Posted on Aug 31, 2009

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SOURCE: wiring diagram for 1980 triumph t140v ignition

Get a Haynes Manual. I work on my own bikes with a Factory Manual, The Haynes or Clymer Manual and a Parts Book. If you are going to do your own work you need these books. Period.

Here are some simple diagrams that give the basic idea of what works for the Typanium Rectifier set up.

Here is a good site for "Home Mechanics".. I love this site.. has some great Triumph stuff and repair info.


Posted on Mar 22, 2010

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SOURCE: what is the best way

Gaiters, I can assume you are referring to the rubber telescopic spring covers on each fork. There is only one way to change these I'm afraid and that means the forks have to come off the bike and come apart on the bench.Triumph never did anything easy! Take the oppurtunity to clean the forks,replace the oil seals and change the fork oil and inspect all the bits.(might as well) When installing the new gaiters the info I have says to use a light oil to help slip them into place by hand with an even pressure.No screwdrivers or pliers. Hope this has helped,nice to chat with another British fan,good luck with the job.Cheers

Posted on Jan 09, 2011

Testimonial: "thanks for answering my question but i had already one, the other one i put on using two pliers with forks upside down clamped in a vice light oil app"

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