Timing Belt Change


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FlashBack
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Motorcycle: 1983 Honda GL1100 Interstate

Timing Belt Change

Post by FlashBack » Wed Mar 18, 2015 9:31 pm



So, i am getting ready to change out my timing belts next weekend on my 83. Picked belts up from NAPA Part 250274.
I have been educating myself for sometime about the process of belt replacement and have observed various methods people use but all stress one point. That the marks on the gears and cases need to line up. Also the crank marks. This ensures correct timing of the motor.

What I haven't read about is what if a mark is off a tooth or two. Do you just line up the marks as your replacing the belt? Also other possibilities to watch for. I just want to go at this with confidence. It appears easy but if you've never done it, looks intimidating.
I have had the bike two years now and feel like it's time. I've gotten to know the bike and feel comfortable working on it myself. I plan on changing the radiator hoses out while I'm there.

Anyways, any feedback is appreciated.



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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: Timing Belt Change

Post by Wilcoy02 » Wed Mar 18, 2015 9:40 pm

Here is a link that is very well done.

http://classicgoldwings.com/forum/viewt ... =74&t=2101

You might have to register to the forum to see it.

If off by a tooth the engine will grumble a little and not like it.

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ram11397
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Re: Timing Belt Change

Post by ram11397 » Wed Mar 18, 2015 10:14 pm

Is this link in the 1100 how to articles or can it be added
this seems a easy and safe way to do this especially for those of us who are not that mechanically minded.

Rick
Rick
1982 GL 1100 Aspencade

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FlashBack
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Re: Timing Belt Change

Post by FlashBack » Wed Mar 18, 2015 10:40 pm

Wilcoy02 wrote:Here is a link that is very well done.

http://classicgoldwings.com/forum/viewt ... =74&t=2101

You might have to register to the forum to see it.

If off by a tooth the engine will grumble a little and not like it.
Thank you. I have seen that one and that is probably the method i will go with.
I do realize that the engine would grumble if off a tooth. I have no symptoms of that. I'm just looking at the "Possibilities" & "Remedies"

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littlebeaver
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Re: Timing Belt Change

Post by littlebeaver » Wed Mar 18, 2015 11:56 pm

If you use this method, make sure all the marks are on target and if they are not don't worry,, clamp them off anyway and remove the belts, the right side (sitting on the bike) is the spring loaded side while changing these...Once the belts are off and you have your new belts in the clamps waiting, hold that thought... If your off a tooth on the spring loaded side hold on to the pulley tightly and unclamp it then turn it and line it up on the arrow all proper and such and re clamp it's just that easy, place in new belts and you are good, the other side should go right on too because nothing moves over there...Keep in mind that if it's the spring loaded side that's off you can turn it still but its hard so grab that sucker on the opposite side of the arrow, I did this several times with no problems, it simplifies the whole process of putting you belts on, the next change will be simple...If you are on the arrows and the Mark at the crank lines up proper and up says up on the pulleys.. you are good to go...Try not to move the crank while removing the belts,, it's no big deal if it moves a hair just make sure its good when you place the belts on.. Man these are ALL supposed to be on there marks...My goodness..What kinda mechanics are doing these....??? :lol: :lol: I'm a caveman and I get it right..lol If you have any questions just ask...

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FlashBack
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Re: Timing Belt Change

Post by FlashBack » Sun Mar 22, 2015 12:53 pm

littlebeaver wrote:If you use this method, make sure all the marks are on target and if they are not don't worry,, clamp them off anyway and remove the belts, the right side (sitting on the bike) is the spring loaded side while changing these...Once the belts are off and you have your new belts in the clamps waiting, hold that thought... If your off a tooth on the spring loaded side hold on to the pulley tightly and unclamp it then turn it and line it up on the arrow all proper and such and re clamp it's just that easy, place in new belts and you are good, the other side should go right on too because nothing moves over there...Keep in mind that if it's the spring loaded side that's off you can turn it still but its hard so grab that sucker on the opposite side of the arrow, I did this several times with no problems, it simplifies the whole process of putting you belts on, the next change will be simple...If you are on the arrows and the Mark at the crank lines up proper and up says up on the pulleys.. you are good to go...Try not to move the crank while removing the belts,, it's no big deal if it moves a hair just make sure its good when you place the belts on.. Man these are ALL supposed to be on there marks...My goodness..What kinda mechanics are doing these....??? :lol: :lol: I'm a caveman and I get it right..lol If you have any questions just ask...
Thanks for the response. I am pretty mechanically inclined however, reading about changing out timing belts, caused me some hesitation about doing it myself.
Your post has helped me to realize that it is not as big of a deal to change them out as it was made out to be. Thank you
While i'm in there, going to change out radiator hoses, thermostat and springs for the timing belt tensioners, (ordered springs and o-ring for thermostat from Honda. $8.00). Also, valve adjustment and carb sync which i have done before on this bike.
Tackling this project next weekend. I will post my results.

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littlebeaver
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Re: Timing Belt Change

Post by littlebeaver » Sun Mar 22, 2015 6:35 pm

You are very welcome sir,,, I try to make life easy for myself and am just sharing my findings is all.. You read horror stories of bent valves ect.. .... Scary stuff...Freaked me out too a long time ago...

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chiltonj
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Re: Timing Belt Change

Post by chiltonj » Mon Feb 25, 2019 4:17 pm

After attempting the timing belt change, I have found that the center pulley has moved forward (read: clockwise) a bit (maybe 1/12th rotation, and the engine is NOT at TDC anymore) and my left and right pulley have rotated backwards (read: counterclockwise) about a tooth each. Have I completely FUBAR'd everything or what? Just for additional info, i have the engine out and on my workbench, so I can access everything pretty easily. Not sure how they went in different directions. Not only that, but one of my belt tensioner bolts fell off the workbench and into the ether... had to order a replacement for it, not happy about that. I hope I am making a bigger deal out of this than necessary, but until I get definitive alternative reliable confirmation, I am at DEFCON 2 right now.

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OldguyGlen
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Re: Timing Belt Change

Post by OldguyGlen » Mon Feb 25, 2019 6:10 pm

Since you have the engine on the bench with no possibility of accidentally cranking it over, or starting it up, you have no worries. Slowly, by hand, rotate the crank shaft pulley, and camshaft pulleys to line up the marks. Camshafts show an "UP" symbol that may not be exactly at 12:00 oclock when the marks on the outboard edges line up. If the center pulley does not have a visible mark, make one with a sharpie after you use the timing port hole (center rear top of the engine) showing the T1 mark correctly. (Marking the center pulley gives you easy visual reference without going back to the timing port hole a hundred times). If you feel any resistance, stop and back off. With the plugs out, and the old belts off, you can turn any of them in either direction. Just don't loosen the pulley bolts. A 18" piece of wood with 2 screws about 2-3/4" apart can be used to rotate the cam pulleys easily. (there's a pic on the other forum posting about this "tool") You don't necessarily need to clamp them, just be careful of alignment as you place the new belt.
Place the belt along the "straight section" opposite the tensioner first, then snake it around the other side and around the tensioner. To set the tension, be sure the straight section is actually straight (no need to put a lot of tension on it, just take out the slack with the wood/screw tool. Then let the tensioner spring do its job, maybe with a slight hand pressure to help it (springs a little weak).
Crank the center bolt clockwise a few turns and verify the marks all line up. I then re-do the tensioners to my satisfaction. I tension the bike's left side with all marks lined up first since that cam stands still. I then rotate the center pulley 1-turn, and then tension the right side. That 1-turn makes the right cam sit still as the cam lobes are at rest now.

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AZgl1800
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Re: Timing Belt Change

Post by AZgl1800 » Mon Feb 25, 2019 6:53 pm

OldguyGlen wrote:
Mon Feb 25, 2019 6:10 pm
A 18" piece of wood with 2 screws about 2-3/4" apart can be used to rotate the cam pulleys easily. (there's a pic on the other forum posting about this "tool") You don't necessarily need to clamp them, just be careful of alignment as you place the new belt.
here is the pictures he mentioned.

https://www.goldwingfacts.com/forum/10- ... orial.html
~John

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chiltonj
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Re: Timing Belt Change

Post by chiltonj » Mon Feb 25, 2019 10:04 pm

Thank you!! That was perfect! I was hoping it was fixable. You are a scholar my friend and this is the reason I keep coming back to this site. Hands down the best advice for my bike.



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