Hi,
Just noticed a new sound on my 2004 900 35,000
Seems slow manoeuvre in first gives a strange scraping/squeaking sound. Not constant but it's there.
It happens also when bike is free wheeling in neutral but more pronounced when given slight throttle, it disappears once the bike is shifting. Cant replicate it with bike on stand. It's not the usual.clutch noise which is common.
I rarely use the rear brake, so have been out and used it heavily incase something is blocked in there but to no avail.
I'm not great with mechanics but wondered if anyone has any thoughts? The rear wheel has no movement as I thought maybe bearings
Any help would be appreciated
Rear End Scraping, Squeaking Noise
Started by
rlittlefellow
, May 13 2020 06:51 pm
11 replies to this topic
#2
fixitsan
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Posted 13 May 2020 - 07:04 pm
Daft question but the chain is nice and slack isn't it, so that when the wheels are on the ground and you're sat on it there's still some slack ?
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#3
rlittlefellow
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Posted 13 May 2020 - 07:14 pm
I've not checked the slackness whilst sitting. Would this still effect even with the bike in neutral and costing?
#4
Studley Ramrod
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Posted 13 May 2020 - 07:24 pm
Rear wheel not lined up perhaps ?
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#5
fixitsan
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Posted 13 May 2020 - 07:24 pm
I've not checked the slackness whilst sitting. Would this still effect even with the bike in neutral and costing?
Could do. As the suspension compresses down the chain tightens up
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#6
rlittlefellow
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Posted 13 May 2020 - 07:41 pm
Rear wheel not lined up perhaps ?
Thought about that earlier today, will check it tomorrow
#7
rlittlefellow
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Posted 13 May 2020 - 08:13 pm
Just checked rear wheel, and if markers are anything to go by the rear wheel is straight.
#8
steve27bha
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Posted 13 May 2020 - 09:02 pm
The usual advice is to not trust the markers for wheel alignment.
Do a proper check using string, a pair of long straight bits of wood or, my favoured method, a pair of old fluorescent light tubes. A centre stand is good, a paddock stand best, to support the back end upright.
TDM900A 2008/09 in use, with 
CBX750FE in reserve; Cagiva N90 125 now rebuilt & in use.
#9
wicklamulla
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Posted 14 May 2020 - 09:27 am
Dixon, check the rear brake disc is not warped and rubbing.
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#10
Matlock
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Posted 14 May 2020 - 10:57 am
I'd be checking the following in order of likelihood:
- Chain tension is as per the manual.
- Front & rear sprocket for wear and damage.
- Chain for any bad tight spots (small tight spots won't be an issue, that seems pretty normal on most chains).
- Rear disc for warpage and rear caliper for correct operation.
- Rear wheel and sprocket carrier bearings. Get the back end off the ground, take the chain of the rear sprocket, tighten up the axle again and listen/feel for any grinding noise, or play - there shouldn't be any. Removing the rear caliper may be necessary, so you know you're just hearing the wheel bearings,not the pads rubbing.
All the above is pretty straightforward, you'll only need a few basic tools to do the job. You'll need a workshop manual though, do a search for JBX's website on here to download a copy.
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#11
steve27bha
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Posted 14 May 2020 - 04:57 pm
Thinks: no noise on stand, so what is different to slow riding? Howzabout the road surface - not flat so the suspension is moving?
Check the rear suspension linkage, shock bushes and the swingarm bearings. See advice on here if you have not greased the frame-mounted pivot collar and can't get it out!
TDM900A 2008/09 in use, with
CBX750FE in reserve; Cagiva N90 125 now rebuilt & in use.
#12
dandywarhol
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Posted 14 May 2020 - 05:12 pm
Sounds like the sprocket carrier bearing. If there's no rear wheel bearing movement then check for play by rocking the sprocket - it shouldn't rock!
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