Mt 350 Harley

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Woody
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Mt 350 Harley

Post by Woody » Sat Nov 03, 2018 3:32 pm

Could anyone tell me the correct tension for the timing belt, as we've got a bit of play and would like to adjust it
Wiody
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lardmarc
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Re: Mt 350 Harley

Post by lardmarc » Sat Nov 03, 2018 3:41 pm

It never hurts to watch this.

https://www.youtube.com/watch?v=-GonzLESgPI


Not me obviously, I adjust with a BFH.
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“Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so.” (Adams, 2009).

Wirralman
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Re: Mt 350 Harley

Post by Wirralman » Sat Nov 03, 2018 4:47 pm

There should be some play on the belt
If you tension it too much you will wear bearings unnecessarily, too loose and it may slip a cog

The correct way to do the job can be found in the manuals. I can't remember ever removing the tensioner itself . Equip yourself with cleaning rags, if the belt has been on for a while the belt will have shed some rubber

You should find an O ring around the edge of the cover housing, that will need to be seated. It should go around the edge but never be waterproof, there's a drain hole for that which is worth clearing ( If you can't find one - look harder )
There are torque setting and any loctite requirements in the manuals
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hounddog
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Re: Mt 350 Harley

Post by hounddog » Sat Nov 03, 2018 4:53 pm

http://www.qtg.co.uk/motorbike/files/mt350/20files.htm

Cambelt Tutorial should answer this

If you dont know how old the belt is take the opportunity to renew it , with the correct Dayco one
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Ian
------------------------------------

Harley Davidson MT350e
Armstrong MT500e
Armstrong MT500 - next project

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lardmarc
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Re: Mt 350 Harley

Post by lardmarc » Sat Nov 03, 2018 5:07 pm

Wirralman wrote:
Sat Nov 03, 2018 4:47 pm
Too loose and it may slip a cog.
It doesn't need to be loose to slip a couple of teeth.
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“Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so.” (Adams, 2009).

Wirralman
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Re: Mt 350 Harley

Post by Wirralman » Sat Nov 03, 2018 5:18 pm

As for the belt itself Dayco is the de facto standard but I think there is an alternative. The key thing is not to buy a machine belt, it must be designed for bike use.

If you look on the forum you may find references to these with comments like 'They're (machine belts) fine , don't know what the fuss is about' but the riders don't ride their bikes very much ......

Check you pulleys for wear whilst you are doing the job
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lardmarc
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Re: Mt 350 Harley

Post by lardmarc » Sat Nov 03, 2018 5:27 pm

Wirralman wrote:
Sat Nov 03, 2018 5:18 pm
I think there is an alternative. The key thing is not to buy a machine belt, it must be designed for bike use.
Gates also make a belt for them.

None of the proper outlets are going to sell you a machine belt.
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“Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so.” (Adams, 2009).

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