BMW Luxury Touring Community banner

1 - 19 of 19 Posts

·
Registered
Joined
·
7 Posts
Discussion Starter #1
G'day,

My LT has for the past 4 months been making an uncomfortable noise from the rear end, so much so now that others are commenting. It's not a tinny rattle but more a metallic clunking and is esp prevalent when applying load (accelerating). Also very evident at standstill or just moving away while engaging the clutch From a thorough look around I can find nothing obvious.

Having read Newport's post on Feb 11, I'm wondering if there may be a relationship?

BTW, I plan to remove the shock assembly next week to replace a tired spring (it doesn't like supporting my better half and me together without the occasional undercarriage scrape).

Is there anyone out there who can offer some insight on my issue before we start tooling the old girl apart (the bike that is)?

Thanks,

Paul
 

·
Registered
Joined
·
1,504 Posts
Paul
I thought it may be the rear brake rotor but it doesnt make any noise if you are not moving sounds like you are maybe describing 2 faults but think they are the same.
Easy to check the rotor at least, grab hold of the rotor and try to make it move it will emit a clang if loose ( make sure it is cold) and it does have a tiny bit of movement but no noise
 

·
Registered
Joined
·
835 Posts
If it sounds like a cowbell when rolling to a stop it is the rotor
 

·
Registered
Joined
·
3,525 Posts
well, If it's not the rear dirve.. The rotor is a floating type so it will move around a little..That's normal...

Maybe drive shaft ?

You'll know soon enough if you keep riding it...

John
 

·
Registered
Joined
·
860 Posts
JPSpen said:
Maybe drive shaft ?

You'll know soon enough if you keep riding it...

John
+1... My thoughts exactly...
 

·
Registered
Joined
·
7 Posts
Discussion Starter #6
Thank you all. Like said, it was easy enough to check the rotor and presto, there's the problem. Now to find the best way to remedy the issue here on the east coast of Oz. Any tips?

Paul
 

·
Registered
Joined
·
231 Posts
PaulN said:
G'day,

My LT has for the past 4 months been making an uncomfortable noise from the rear end, so much so now that others are commenting. It's not a tinny rattle but more a metallic clunking and is esp prevalent when applying load (accelerating). Also very evident at standstill or just moving away while engaging the clutch From a thorough look around I can find nothing obvious.

Having read Newport's post on Feb 11, I'm wondering if there may be a relationship?

BTW, I plan to remove the shock assembly next week to replace a tired spring (it doesn't like supporting my better half and me together without the occasional undercarriage scrape).

Is there anyone out there who can offer some insight on my issue before we start tooling the old girl apart (the bike that is)?

Thanks,

Paul
This looks like a classic symptom of the "Cow Bell" rotor. I had this on my 2004, but did nothing about it. It was getting louder with time - the dealer told me that there was no safety issue with it, just an embarrassing clunking when going over bumps.
I traded it in for 2007 and that too developed similar symptoms. At about 20k I got new style rotor for free because it was a "recall" item. The new type rotor has fewer mount holes - I think 5, but those are bigger and seem to be holding better with time.
I have now 35k on the bike and still no "Cow Bell" sound, so I guess the new rotor has fixed the issue.
 

·
Registered
Joined
·
1,504 Posts
Paul glad to hear you found the problem Luckily for you the aussie dollar is so high
you need to buy it here and you will also need these
easy enough to change I have done 2 down this way already the last one I got with pads was $ 239.00 to the door.. they are $500.00 here in Aus.
 

·
Registered
Joined
·
1,504 Posts
paul
before you replace the spring check the hydraulic adjuster under the seat is full of oil, on the centre stand back the adjuster off completely and then start winding it should have pressure almost from thr first click, if it doensnt back it off and top the adjuster with high pressure oil
it will make a big difference to the ride and height of the bike might just save some more money
 

·
Registered
Joined
·
3,222 Posts
Axle said:
paul
before you replace the spring check the hydraulic adjuster under the seat is full of oil, on the centre stand back the adjuster off completely and then start winding it should have pressure almost from thr first click, if it doensnt back it off and top the adjuster with high pressure oil
it will make a big difference to the ride and height of the bike might just save some more money
Channing kindly made some notes about doing it in THIS POST
It helps for a while... but there's nothing like getting new shocks, as costly as that is.
cheers
 

·
Registered
Joined
·
1,504 Posts
aww c'mon chris I love bashing speed humps and scraping everything :histerica
 

·
Registered
Joined
·
7 Posts
Discussion Starter #12
Chris and Linton,

Re the spring, I've already been down the path of servicing the adjuster but makes little difference. From further enquiries I'm told it's a known issue that the spring gets tired after being loaded often and long. I figure as the previous owner and wife did much touring with trailer in tow that it's a reasonable thought that the spring may be due for replacement. Anyway, the brief I've given my local mechanic is to source something that will carry both me and wife with full paniers and top box that keeps the machine far enough off the road to allow for some decent cornering without scraping. He tells me he has sourced a replacement but it's now four weeks in the waiting ... must be coming from Saturn or some other far flung part of the universe. I'll be interested to see what his recommendation is for fixing the "cow bell" rotor. I like the idea of sourcing the EBC unit from the US at $150 something ... I have priced the same unit here in Oz (Melbourne) but they want $495 ... that's not about to happen.

Will keep you posted,

Paul
 

·
Registered
Joined
·
2,746 Posts
Paul, please update the post with your findings on the spring change. Inquiring minds would like to know............

Loren
 

·
Registered
Joined
·
3,222 Posts
Paul, if you have any questions about the rear suspension, give Sean O'Sullivan (SOS engineering) at Penrith a call. He spec'd the Wilbers for my bike, very nice guy, very knowledgable, and renowned for the quality of his work. (02) 4732 5533 or 0412 245 176
He's done a couple of the other guys LT's also.
I had the BMW dealer (Procycles) install them, after purchasing through Sean.
Your local wrench may have already ordered from Wilbers, as they have to ship from Germany, just the other side of Saturn.... :)
Have fun!
 

·
Registered
Joined
·
372 Posts
I took the rotor off and "Dabb'd" some RTV hi temp silicone in around the worn springs( actually... I rubbed it in as if I were packing bearings. You want to get it in there).. Wiped off the excess then re-assembled, put it up on the centerstand, applied the brake to center the rotor before the RTV set-up and then, for a few hours rotated the tire a little bit and re-applied the brake during the set-up perod of the RTV.

Kept the rotor quiet for a couple years with no other related problems.
 

·
Registered
Joined
·
7 Posts
Discussion Starter #16
I can't believe it's been so long since first calling for advice. Well, finally with your help and tips and after waiting forever for a new rear spring (which had to be supplied twice thanks to a mix-up) my ride is all fixed and cruising like a charm.

The new stiffer spring easily carries my wife and I (around 180kg combined) without any sign of scraping ... although "she who must be obeyed" will not allow hard cornering.

Also, the new EBC brake rotor and pads work really well ... no embarrassing clanging and the brakes pull up much better too. Thanks to Axle's advice, I sourced the parts from the US at a great price with delivery here in Oz in under a week.

Thanks again folk for all your help.

Paul
 

·
Registered
Joined
·
2,746 Posts
Paul,

Good news. What spring did you use?

Wonder how many here recognize the reference to the H. Rider Haggard novel 'She'?

PaulN said:
I can't believe it's been so long since first calling for advice. Well, finally with your help and tips and after waiting forever for a new rear spring (which had to be supplied twice thanks to a mix-up) my ride is all fixed and cruising like a charm.

The new stiffer spring easily carries my wife and I (around 180kg combined) without any sign of scraping ... although "she who must be obeyed" will not allow hard cornering.

Also, the new EBC brake rotor and pads work really well ... no embarrassing clanging and the brakes pull up much better too. Thanks to Axle's advice, I sourced the parts from the US at a great price with delivery here in Oz in under a week.

Thanks again folk for all your help.

Paul
 

·
Registered
Joined
·
7 Posts
Discussion Starter #18
Loren,

Sorry for slow reply. I'd like to say I've been too occupied with cruising but truth is I'm just slow. :eek:

The new spring is made in Oz to my own weight specs and goes under then name Teknik.

Oh, the other thing that's been taking up my time is helping my wife learn to ride. She enjoys the LT as pillion but decided she wanted her own freedom to ride. So is learning to scoot. Bought her a nice new Sym HD 200i EVO, then two days later she challenged a tree but lost. Now is nursing a smashed clavicle while I rebuild the front end of her new toy ... but the good news is she is determined to conquer it and ride on. One tough lady she is and I love her.

Thanks for the interest,

Paul
 

·
Registered
Joined
·
478 Posts
i could be wrong but i think you can eliminate the drive &rear brake.if it makes the noise at a standstill like you said. with the rear brake applyed is the noise still there. nice thing is it makes the noise sitting still i think you just have to keep looking take a good at the exaust mounts & cat could be broken. check the center & side stand skid plate
 
1 - 19 of 19 Posts
Top