| Author | Message | ||
     Hughesatron |
I get a squeeking noise from somewhere on the lower part of my 2006 XB12X when I put the bike in first gear and accelerate. I notice this mostly when I've first started the bike and am accelerating away from my home. It doesn't happen on desceleration or if I have it in neutral and am at low speed. It seems to only happen when I have engaged a gear and accelerate. At higher speeds it may occur, but the exhaust, engine and wind noise may prohibit me from hearing it. Any idea on what may be causing the noise? I've searched this forum, but have not come across this particular problem being posted. My bike is a 2006 XB12X with about 16,000 miles and is up to date with all maintenance issues. | ||
| Rsh |
I have had the bearings in the tensioner pulley do that when they were worn. Replaced them no problem since. | ||
| Hughesatron |
That could be the problem. However, I'm thinking that under acceleration, the tensioner pulley would have less stress since it's on the bottom of the drive belt loop (top of drive belt loop under tension). It would make sense to me that the tensioner pulley would have more stress under deceleration since the bottom side of the drive belt loop would be in tension from engine braking. Either way, I'll take a look at the pulley bearings. | ||
| Rsh |
Mine made the noise when mildly accelerating just as you described, the noise was more pronounced when cold. If the tensioner pulley is in good shape, replacement bearings are very inexpensive. If you are mechanically inclined you just need access to a press to remove the old and in with the new. It's relatively easy to check the tensioner pulley out. Loosen the rear axle (remember the pinch bolts) to relieve the belt tension, check the feel of how the pulley rotates, does it feel gritty in rotation? or exhibit extra play or slop? etc. | ||
| Ulynut |
Have you changed out your rear wheel bearings yet? If not, I'll bet its the wheel bearings. If so, what color are the new ones? | ||
| Ulynut |
Any idea what the noise is yet? | ||
| Iamarchangel |
That could be the problem. However, I'm thinking that under acceleration, the tensioner pulley would have less stress since it's on the bottom of the drive belt loop (top of drive belt loop under tension). It would make sense to me that the tensioner pulley would have more stress under deceleration since the bottom side of the drive belt loop would be in tension from engine braking. Either way, I'll take a look at the pulley bearings. Ha, think again. The rear squats on acceleration. How much depends on your suspension. That squat effect would move the belt to the tightest point (straight line from centre of small pulley through swingarm pivot to big pulley centre). So if it is the tensioner pulley bearings, that would be when it is happening. | ||
| Hughesatron |
I bought the bike used and the previous owner said the rear wheel bearings were recently replaced. I tried taking the pulley tensioner off today, but I couldn't acquire the correct tool for the rear wheel (7/8th inch allen wrench is huge!), so I had to order the tool. I looked at the pulley tensioner bearings and they look ok, but I'll really only know when I take loosen the belt and inspect the bearings. I have the suspension set for 230-250lbs in the rear (compression and rebound), and I weigh 185lbs. Regardless, I don't accelerate hard to hear the noise, so I'm really not stressing the suspension. I should have the tool for the rear axle in a week and will update then. If the bearings on the pulley tensioner need replacing, should I get them from a local HD dealer or is there a good source online? Thanks everyone. | ||
| Neilgehrke |
"I couldn't acquire the correct tool for the rear wheel (7/8th inch allen wrench is huge!), so I had to order the tool" I'm going to assume you dont have the axle wrench in your tool kit? | ||
| Iamarchangel |
Bearings are usually found in bearing supply shops. The numbers stamped on them are universal sizes. The bearing shops will have the better brands: skf,fag. | ||
| Iamarchangel |
Probably don't have the 3/8 allen for the pinch bolt under the axle either. Auto shops carry them. You can take the tensioner off by itself and check it out first. (Message edited by Iamarchangel on November 28, 2009) |
