What do I do when one of the timing belts is a tooth off?


Information and questions on GL1100 Goldwings (1980-1983)
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Fulcrum
Posts: 181
Joined: Thu Mar 07, 2013 1:54 pm
Location: The Falls, Texas
Motorcycle: 1982 GL1100

What do I do when one of the timing belts is a tooth off?

Postby Fulcrum » Sat Jun 15, 2013 5:07 pm



So I decided to change the timing belts today. And when I ligned up the T1 on the crank the right side pulley ligned up perfectly, but the left side was off by about a tooth. What is the fix here?



User avatar
Fulcrum
Posts: 181
Joined: Thu Mar 07, 2013 1:54 pm
Location: The Falls, Texas
Motorcycle: 1982 GL1100

Re: What do I do when one of the timing belts is a tooth off

Postby Fulcrum » Sat Jun 15, 2013 5:13 pm

Here are some pics to show the difference.
hard to tell but the T1 is ligned up
hard to tell but the T1 is ligned up
Attachments
right side pulley
right side pulley
another shot of the right side
another shot of the right side
left side
left side
left side again
left side again
almost a tooth off
almost a tooth off

indianakid
Posts: 126
Joined: Sun Sep 26, 2010 5:28 pm
Location: long beach, ca
Motorcycle: 83 GL1100 I

Re: What do I do when one of the timing belts is a tooth off

Postby indianakid » Sat Jun 15, 2013 5:38 pm

It is a pretty easy fix with the way you have the bike in the picks.

Loosen the tensioner. Keep a box end wrench on the cam bolt so you control the movement. With your free hand hold the lower (straight side) side of the belt near the cam pulley and rotate the cam clockwise one tooth. This is where having your hand on the belt and lower side of the pulley so you keep the belt tight to the crank and let it slip one tooth on the cam, then work the belt the rest of the way around the pulley. Tension the belt per the book and recheck your marks.

One tooth off will not cause any damage to the valves.

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Fulcrum
Posts: 181
Joined: Thu Mar 07, 2013 1:54 pm
Location: The Falls, Texas
Motorcycle: 1982 GL1100

Re: What do I do when one of the timing belts is a tooth off

Postby Fulcrum » Sat Jun 15, 2013 6:08 pm

I like you idea Indianakid. I was just thinking about using littlebeavers idea of using sockets and C-clamps to secure the pulleys and then loosen the tensioners and when I had the left side belt off remove the C-clamp and rotate the left side pulley to lign up with the marks and then reapply the C-clamp and install the new belts. Was just worried about pulling on the old belt and possibly moving the crank but witht the right side secured with the C-clam moving the belt a tooth shouldnt affect the crank anyway. Thanks for the help. I'm going to wait a while and work on it later when it cools down a little. Its almost 100 degrees out in the sun right now and I'm sweating like a **** in church.

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Fulcrum
Posts: 181
Joined: Thu Mar 07, 2013 1:54 pm
Location: The Falls, Texas
Motorcycle: 1982 GL1100

Re: What do I do when one of the timing belts is a tooth off

Postby Fulcrum » Sat Jun 15, 2013 7:37 pm

Another question, do you guys use loctite on the tensioner bolts or have a torque setting to use on them?

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Fulcrum
Posts: 181
Joined: Thu Mar 07, 2013 1:54 pm
Location: The Falls, Texas
Motorcycle: 1982 GL1100

Re: What do I do when one of the timing belts is a tooth off

Postby Fulcrum » Sat Jun 15, 2013 8:39 pm

Well the swap is done and it took less than 30 minutes. Not to bad even though one belt was a tooth off. It is kinda nice to know that given the age and the fact that it only has ten thousand miles on it someone already replaced the belts before. But now I have brand new ones and the experience of having done it.
Attachments
New belts installed
New belts installed
And right on the money
And right on the money




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