Belt issue help


Information and questions on GL1100 Goldwings (1980-1983)
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tunaboy
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Belt issue help

Postby tunaboy » Thu Apr 25, 2013 12:40 pm



I have my 80 1100 ready to put on the new belts. I have the radiator off and the front belt covers off. I spun the motor with the stator bolt until I had the T1 mark show up and looked and the right hand and left hand cam belt pullies lined up with the timing marks on both sides the way they are supposed to. I marked both pullies and marked the crank shaft position for reference. I took off the right hand belt and of course the right hand pulley moved because of the valve springs...no big deal I have everything marked. I then moved to the left hand side and removed the tensioner and belt.
The left hand side did moved maybe a 1/16" from the mark. I clamped the LH pully so the marks showed up as planned. No pressure was put on the pulley. I clamped a socket in a pulley hole to the back of the belt housing. I am sure I did no damage. I then put on the new belt and noticed that the crank mark that I used had shifted about a 1/16" from where it should be. I pulled the belt off and decided that I would put a box wrench on the crank bolt so I could do the cable tie thing to hold the crank in the right position. I now have the pulley and the crank marks lined up as required. The problem is that when I put the belt on I am about 1 tooth short on the bottom of the belt. When I get the belt on there is too much slack on the bottom run of the belt. The tensioner should take out the slack on the top run of the belt but the bottom run of the belt will be too lose. Before I took off the original belts the slack was maybe 3/16". Not sure what I did or did not do. Everything was going pretty good before I noticed this.
Thanks



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virgilmobile
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Re: Belt issue help

Postby virgilmobile » Thu Apr 25, 2013 4:21 pm

I'd carry on from where you are....Put it together and snug the tensioner....HAND TURN the engine over 2 turns and recheck the marks....Adjust as necessary....hand turn it again and check the slack in the long run of the belt.
Ya gotta get level with the pulley and casing marks for accuracy.One tooth off will be obvious (Completely off the mark).

Roll it over again and triple check everything...only then can you use the starter.
I usually run the engine for 10 seconds and check the tension and marks for the fourth time before I button it up.

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thrasherg
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Re: Belt issue help

Postby thrasherg » Thu Apr 25, 2013 4:47 pm

As stated, only turn it over by hand until you are 100% satisfied the timing is correct!! Remove the spark plugs to make it easier to rotate the crank shaft.

Gary

tunaboy
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Re: Belt issue help

Postby tunaboy » Fri Apr 26, 2013 7:21 am

I was trying to come up with a simpler explanation of my problem and I think I have it. When I have the belts on and the timing marks all lined up the belts are loose on the side away from the tensioners. The old ones had about 1/4" slack in this area of the belts, the new probably 1/2" slack. Thanks for the recommendation and I will get it all together and rotate it by hand a few revolutions and see what happens. I even counted the teeth on the old and new belts and they are identical.
I will let you know what I find.

Thanks again.

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SteveB123
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Re: Belt issue help

Postby SteveB123 » Fri Apr 26, 2013 8:15 am

Turn it over half way, then reset the tension on the offending (right, I assume) side. The valve spring tension affects both sides the same amount, but in different places on the rotation, if that makes sense.

One crank revolution, one-half cam revolution. Cam mark will be pointing inward....and spring tension won't be forcing the cam to turn, allowing the tensioner to do its job.

http://www.ngwclub.com/forum/viewtopic.php?t=3544

Post 4.
Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
Previous: 93 GSX1100F Katana
82 GL500 Silverwing

tunaboy
Posts: 144
Joined: Sun Aug 05, 2012 8:46 pm
Location: Milwaukee, Wisconsin
Motorcycle: 1980GL1100 NICE!

Re: Belt issue help

Postby tunaboy » Fri Apr 26, 2013 9:46 am

Hey THANKS. I got everything lined up and decided it was time to hand crank it over and you all were right. The lose belt seems MUCH better after a turn or two. The timing marks all line up good. The old belts were OEM from 1980 and do feel dry but still look pretty good but I will sleep better knowing that the belts have been swapped. So far new plug wires/caps, fuel filter, fuel lines, now the belts, soon the thermostat, yellow wire fix, SS brake lines, etc. etc. Would be lost without the help here @ GWD. :D

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virgilmobile
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Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Belt issue help

Postby virgilmobile » Fri Apr 26, 2013 10:22 am

While your down there pop the cap off the front of the water pump cover and take a lateral wiggle of the impeller.Poke your nose up under the same area and look at the weep hole for signs of oil or antifreeze... Just checking for water pump condition...:geek:

tunaboy
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Re: Belt issue help

Postby tunaboy » Fri Apr 26, 2013 1:09 pm

How do you tension belts when you have the radiator off and cannot start the bike to get up to operating temperature? When the radiator and belt covers and new hoses are in place tensioning would be a pain. By the way I need the 42 x 2 O ring for the thermostat, tried 2 bearing houses and standard Parker rings, no metric. Would a Honda dealer have them. Would I need a part number for them to find one? Asian car dealer? Napa?

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SteveB123
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Re: Belt issue help

Postby SteveB123 » Fri Apr 26, 2013 1:18 pm

tunaboy wrote:How do you tension belts when you have the radiator off and cannot start the bike to get up to operating temperature? When the radiator and belt covers and new hoses are in place tensioning would be a pain. By the way I need the 42 x 2 O ring for the thermostat, tried 2 bearing houses and standard Parker rings, no metric. Would a Honda dealer have them. Would I need a part number for them to find one? Asian car dealer? Napa?


No need to have engine at temp to tension belts.
Call a dealer for the O ring.

Seriously, it's a lot better to call your local dealer to find out if they have it, than to ask people on the Web. We have no way of knowing your delaers parts stock.
Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
Previous: 93 GSX1100F Katana
82 GL500 Silverwing

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Wilcoy02
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1983 GL1100I frame with an 80 engine. poor boy installed with C-5 ignition--DIED in Grande Prairie Alberta Canada 8/15


98 valkyrie sold 8/16

Re: Belt issue help

Postby Wilcoy02 » Fri Apr 26, 2013 10:23 pm

The O ring for the thermostat is 54x2 honda part #91302-317-700

You can replace the theromastat with napa 101




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