Whining Noise


Information and questions on GL1500 Goldwings (1988-2000)
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roadhawg
Posts: 22
Joined: Tue Apr 20, 2010 8:00 pm
Location: Zebulon, NC
Motorcycle: 1993 GL1500A Aspencade

Whining Noise

Postby roadhawg » Sat Sep 14, 2013 2:53 pm



I am puzzled. I replaced the Timing Belts on my 1500 with Napa brand belts. It immediately began making a whining kind of noise. I decided that it might be the tensioner pulleys, so I replaced those and adjusted the tension to the specs in the manual. Still I have this whining noise. Could it be the Napa belts?



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WingAdmin
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
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Re: Whining Noise

Postby WingAdmin » Sat Sep 14, 2013 6:52 pm

Generally whining from the timing belts comes from having them on too tight. How did you set the tension?

roadhawg
Posts: 22
Joined: Tue Apr 20, 2010 8:00 pm
Location: Zebulon, NC
Motorcycle: 1993 GL1500A Aspencade

Re: Whining Noise

Postby roadhawg » Sun Sep 15, 2013 1:19 pm

I set it by measuring free (up and down) travel of the belt in the middle of the run opposite of the tensioner.

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WingAdmin
Site Admin
Posts: 17050
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Whining Noise

Postby WingAdmin » Sun Sep 15, 2013 11:13 pm

roadhawg wrote:I set it by measuring free (up and down) travel of the belt in the middle of the run opposite of the tensioner.


Is this how you set it?

From step 104 of How to remove and replace your timing belts

Image

104. Apply 4.4 lb of pressure to the hook over the belt. Look at the belt on the ruler - with 4.4 lbs of pressure applied, the belt should be deflected 5-7 mm (I set mine to 5 mm). If the belt deflection is less than 5 mm, then the belt is too tight. If the deflection is greater than 7 mm, then the belt is too loose.

To adjust the tightness of the belt, first loosen the pivot bolt of the tensioner, then very slightly loosen the slider bolt. Adjust the tensioner up or down to tighten or loosen the belt as required, then tighten the slider bolt. Finally, tighten the pivot bolt and re-check the belt tension.

When I did this procedure on my GL1100, I found the tensioner springs were quite weak, and did not apply anywhere near enough tension to the tensioners, resulting in belts that were too loose. When I did this on my GL1500, I found that the tensioner springs were just about perfect - allowing the springs to apply tension to the belts, then snugging up the tensioners, gave me exactly 5mm of deflection with 4.4 lbs of pressure applied.

roadhawg
Posts: 22
Joined: Tue Apr 20, 2010 8:00 pm
Location: Zebulon, NC
Motorcycle: 1993 GL1500A Aspencade

Re: Whining Noise

Postby roadhawg » Mon Sep 16, 2013 7:53 pm

Yes, more or less. I used a 4.4 pound weight from a dumbbell and measured the flex of the belt in fractions 3/16ths to 1/4 of an inch. I wasn't as precise as you were, could be that was the difference. I will repeat the process and see if it helps.




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