04 WR450 with 400miles shocker problem?


11 replies to this topic
  • tikkar

Posted October 09, 2008 - 09:24 AM

#1

My WR has been parked up for 3 years before I got it, and it's got a few faults that I'm sorting out one at a time. It's done 400 mile now, and I noticed, when I was lifting it out of a bog at the weekend that when I took all the weight off the back end, there was a 'clunk'? from the shocker.
On the M/X stand at home (with the back end off the floor), I lifted the rear wheel and the compression seemed good, but when I let go, it dropped and I got the 'clunk' again. I stuck a prybar in the linkage with someone holding the back end, but no free-play at all. Adjusting the re-bound doesn't get rid of it either. I'm going to strip the linkage anyway to pack it with grease at the w/end, but has anyone else come across this noise on a WRF with this low milage before? It covered the same terrain as three KTM's and a 08 WRF at the same or faster speeds (120miles, much of that ballistic) without, apart from the noise, any other suspension worries.

  • matt4x4

Posted October 09, 2008 - 09:40 AM

#2

if the bike sat while the bearings had moisture in them, they would be rusted to dust after 3 years.

Take the shock off first - it could be the upper or lower shock bearing, then check for the clunk - if it's still on the linkage start to disassemble it - it'll be obvious. Also check the swingarm mounts for smooth operation.

New bearings don't cost much and are easy to do - heat/cold, big sockets and a bench vise is usually all it takes.

  • drtbk4ever

Posted October 09, 2008 - 10:05 AM

#3

My WR has been parked up for 3 years before I got it, and it's got a few faults that I'm sorting out one at a time. It's done 400 mile now, and I noticed, when I was lifting it out of a bog at the weekend that when I took all the weight off the back end, there was a 'clunk'? from the shocker.
On the M/X stand at home (with the back end off the floor), I lifted the rear wheel and the compression seemed good, but when I let go, it dropped and I got the 'clunk' again. I stuck a prybar in the linkage with someone holding the back end, but no free-play at all. Adjusting the re-bound doesn't get rid of it either. I'm going to strip the linkage anyway to pack it with grease at the w/end, but has anyone else come across this noise on a WRF with this low milage before? It covered the same terrain as three KTM's and a 08 WRF at the same or faster speeds (120miles, much of that ballistic) without, apart from the noise, any other suspension worries.



I am not very knowledgable on shocks, but isn't there a rubber stopper somewhere in the shock that prevents teh Clunk. If it has sat for a few years perhaps it deteriorated.

  • matt4x4

Posted October 09, 2008 - 10:17 AM

#4

Rubber stopper is for bottoming out - I doubt dropping the rear end from a couple of inches up will get anywhere near that - check the shock bearings and linkage bearings.

  • drtbk4ever

Posted October 09, 2008 - 10:59 AM

#5

Rubber stopper is for bottoming out - I doubt dropping the rear end from a couple of inches up will get anywhere near that - check the shock bearings and linkage bearings.


Well at least I get the fact that there is a rubber stopper in there correct.

  • matt4x4

Posted October 09, 2008 - 11:40 AM

#6

yup you did - I probably prejudged you from your avatar - haha - just kidding!

I just know because i had "the clunk" once

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  • YamaLink

Posted October 09, 2008 - 03:41 PM

#7

Usually my "clunk" is the lower shock bearing.
I've owned a few bikes where that bearing went bad after just a few months...and that was not very wet weather riding, either.

If it is that, the part number is 5UN-22176-00-00, and it's a $9.90 US retail cost.

  • drtbk4ever

Posted October 09, 2008 - 05:18 PM

#8

Usually my "clunk" is the lower shock bearing.
I've owned a few bikes where that bearing went bad after just a few months...and that was not very wet weather riding, either.

If it is that, the part number is 5UN-22176-00-00, and it's a $9.90 US retail cost.


Well if that is his problem, at least it doesn't hurt the wallet too much.

  • tikkar

Posted October 10, 2008 - 08:36 AM

#9

Well if that is his problem, at least it doesn't hurt the wallet too much.


When I said it had been 'parked up', I meant that it hasn't been used at all off the road by the previous owner(s). It dumped the first owner on the road with a low side, and the second one couldn't even start it, so when I got it all the paint was still on the frame rails and up-rights. Even the original fitment tyres are still on!
Sorry, I should have explained the 'parked up' a bit clearer.

  • matt4x4

Posted October 10, 2008 - 09:47 AM

#10

well, you going to take it apart and have a look see - I'm not budging from my original feelings until you do - matter of fact, that was yesterday at 1:40pm - I'd have the whole thing fixed by now.

Seriously - take it apart - 3 years in a garage with little to no factory grease in there, if even one owner even so much as looked at it wrong with the pressure washer you're not going to have any bearings left in the chase.

  • mkporn

Posted October 10, 2008 - 02:31 PM

#11

What Matt Said^^^^ i would put money on the upper , but the lower would be just as likely, but I will still say upper so I wont sound like I am waffling...

  • tikkar

Posted October 11, 2008 - 04:27 AM

#12

well, you going to take it apart and have a look see - I'm not budging from my original feelings until you do - matter of fact, that was yesterday at 1:40pm - I'd have the whole thing fixed by now.

Seriously - take it apart - 3 years in a garage with little to no factory grease in there, if even one owner even so much as looked at it wrong with the pressure washer you're not going to have any bearings left in the chase.


I've stripped it this am and found the usual factory grease, or rather some stuff that looks like a twenty year old rubber band, and as hard as hell. The bearing rollers are still round and haven't started polishing the bushes yet either, so I just might get away with the re-grease. No play on the either end of the shock or swing-arm. There was possibly a bit of fluid on the adjuster for the rebound, but it might just have been me with the WD-40.
Anyway it's back together and there's still a bit of a noise, so I'll go for a test ride then check it again:banghead:




 
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