Go Back   Motorcycle Forum > Motorcycle.Com General Discussion > Motorcycle Mods and Maintenance

Reply
 
Thread Tools
Old 07-27-2011, 12:23 PM   #1
bergkr
Registered Member
 
Join Date: Jul 2011
Posts: 1
Default 2008 Vulcan 900 Classic noise

I have a squeaking noise in the rear end of my 900. It sounds like a bedspring in motion. The dealer thinks it may be the belt, but is not sure. The rear tire was just replaced and everything looked good. The noise is louder now than before the tire replacement. There are 7500 miles on the bike. The noise started about 3000 miles ago and I cannot figure it out.

I cannot get it to make the noise standing still, only when driving slowly or on the highway. It really squeaks upon acceleration.

Any ideas?

Last edited by bergkr : 07-27-2011 at 12:25 PM.
bergkr is offline   Reply With Quote

Sponsored Links Remove Advertisements
Motorcycle Forum
Advertisement
Old 07-27-2011, 12:52 PM   #2
Captain Steve
Registered Member
 
Captain Steve's Avatar
 
Join Date: Jun 2011
Location: Boston, MA
Posts: 137
Default

The rubber ducky in your saddlebag gets motion sickness.

Sorry, nothing to contribute except humor.
Captain Steve is offline   Reply With Quote
Old 07-27-2011, 01:15 PM   #3
The_AirHawk
Founding Member
 
The_AirHawk's Avatar
 
Join Date: Jun 2007
Location: Leanin' Tower O' P-P-P-P-POWAAAAAAAAA!!!!
Posts: 11,491
Default

Is it a constant "squeal", an intermittent squeak, rythmic, speed-dependent, worse over bumpy-roads, what?
__________________
Parfois, on fait pas semblant
Sometimes, it's not pretend
Oderint Dum Metuant
Let them hate so long as they fear
политики предпочитают безоружных крестьян
Politicians Prefer Unarmed Peasants
Nothing to see here, Citizen. Move along now...
The_AirHawk is offline   Reply With Quote
Old 07-27-2011, 01:27 PM   #4
12er
Founding Member
 
12er's Avatar
 
Join Date: Nov 2001
Location: SF
Posts: 2,801
Default

Swing arm bushings under load? Can you wiggle the rear tire side to side and get any play out of the swing arm? My stone age RM250 was like that.
12er is offline   Reply With Quote
Old 07-27-2011, 01:55 PM   #5
Morbo the Destroyer
Registered Member
 
Morbo the Destroyer's Avatar
 
Join Date: Oct 2010
Posts: 1,307
Default

It's probably either:

Insufficient belt tension.

Misalignment between the primary and secondary pulleys.

The most likely scenario is the guys who changed the tires didn't tighten the belt enough. They have to be a lot tighter than you'd think... It's also possible they left out or mis-installed a spacer on the rear axle and moved the rear tire over a fraction of an inch.
__________________
Fun Facts to Know and Tell!

Thomas Jefferson wrote that the 1st Amendment erected a "wall of separation" between the church and the state (James Madison said it "drew a line," but it is Jefferson's term that sticks with us today). The phrase is commonly thought to mean that the government should not establish, support, or otherwise involve itself in any religion.

Its.......A FACT!
Morbo the Destroyer is offline   Reply With Quote
Old 07-27-2011, 02:04 PM   #6
pushrod
Founding Member
 
pushrod's Avatar
 
Join Date: Nov 2001
Location: Baja 'Bama
Posts: 3,642
Default

Rear brake chatter?
__________________
You would not understand,
this is not how I am...

I have become -
Comfortably Numb.
pushrod is offline   Reply With Quote
Old 07-27-2011, 04:21 PM   #7
Easy Rider 2
Registered Member
 
Join Date: Dec 2010
Location: North Central Florida
Posts: 844
Default

Quote:
Originally Posted by bergkr View Post
I cannot get it to make the noise standing still, only when driving slowly or on the highway. It really squeaks upon acceleration.
Block up the rear end solidly and then turn the rear wheel.......in neutral, of course. Trace the noise by ear.

It could be the belt. Put some water on it. Won't hurt the belt any and it might change the noise enough to give you a clue.

I took my truck in recently for an idler pulley; it was SQUEELING when cold. I thought it was the pulley; so did the mechanic last time it was in. Turned out to be the belt.
__________________
'11 Kawasaki Vulcan 900 C
Easy Rider 2 is offline   Reply With Quote
Old 07-29-2011, 08:34 AM   #8
MOKE1K
Registered Member
 
MOKE1K's Avatar
 
Join Date: Jul 2008
Location: Kalapana, Big Island
Posts: 3,994
Cool Bingo!

Quote:
Originally Posted by Morbo the Destroyer View Post
It's probably either:

Insufficient belt tension.

Misalignment between the primary and secondary pulleys.

The most likely scenario is the guys who changed the tires didn't tighten the belt enough. They have to be a lot tighter than you'd think... It's also possible they left out or mis-installed a spacer on the rear axle and moved the rear tire over a fraction of an inch.
Kinda what I thought. when they reinstalled it the tension was changed.
Try and secure a tension tool to check it.
__________________
"YOU CAN'T BOLT ON SKILL"
MOKE1K is offline   Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off