A forum for owners of Yamaha TTR250 trail and enduro bikes!

Members Login
Post Info TOPIC: Rear suspension questions ('05 US blue tank)


Member

Status: Offline
Posts: 7
Date:
Rear suspension questions ('05 US blue tank)
Permalink  
 


Hello All!

 

I have the rear shock out of my bike for a new upper bearing, and decided this would be a good time to check to make sure the strut is still in good working order. I took the shock to a local shop to have the spring removed since the spring compressor tool I had was simply too big. They removed the spring for me (by loosening the locking rings at the top!! I didn't think this was a good idea since it might introduce twist in the spring when re-tightening, but the guy at the shop said it was fine) and I took it back home and noticed that if I compress the strut by hand it doesn't rebound. it simply stays compressed. I read that this could be due to it being adjusted wrong, so I ran through the adjuster on both the reservoir and the bottom of the strut and nothing changed. I then had to clamp the bottom end in my vise and pull as hard as I could to get the strut to extend again. Maybe I'm wrong, but I didn't think this is how the strut was supposed to function. I have also noticed that the reservoir seems to be completely empty when I shake it. I assumed that it was meant to have oil in it, and I would be able to feel it in there if I shook the reservoir around. One more thing, my bump stop is completely shot, and half of it is missing. Is it possible to replace just the bump stop without rebuilding the entire strut? Is my strut just shot anyway? As you can tell I'm a complete novice when it comes to suspension stuff, so any help would be great. I've read through a few posts here about the shock, and also the info over at TTR250.com but I'm still unsure how I should proceed. Thanks for any input!

TTR250_Rear_Shock.jpg



Attachments
__________________


Super Guru

Status: Offline
Posts: 8016
Date:
Permalink  
 

Hi Nicholas and welcome to the forum biggrin

If you look through this guide you will see how the shock absorber can be dismantled, repaired and re-assembled. 

Is the chrome on the shaft in good order? If there is any flaking, rust or damage in the section that moves through the seal head then it will likely have blown the seal and lost the fluid.

If it is in good order, have you a bike shop nearby that repairs shocks and can pressurise yours to see if it holds pressure etc?

You will see from the guide that you have to take off the bottom yoke to replace the bump stop.

I hope that helps?

Brian



__________________

Exeter, Devon, UK

http://www.ttr250.com  - The one and only dedicated TTR250 FAQ! 
 

TIP: For easy viewing bookmark the "Recent Posts" view - http://ttr250.activeboard.com/p/recent/ 



Member

Status: Offline
Posts: 7
Date:
Permalink  
 

Hi Brian!

I've looked through the guide you posted and it looks a bit too complex for my abilities. The shaft appears to be in perfect condition. I live in the middle of nowhere southeast US and there are unfortunately no shops that do suspension work in my area. (finding one that would agree the even attempt to remove the spring was tough) A quick google search shows that the nearest shop that advertises suspension work is about a 4 hour drive. Looks like I might be stuck between a rock and a hard place, as they say. I've included a short clip showing what I was describing in my post.



__________________


Super Guru

Status: Offline
Posts: 2257
Date:
Permalink  
 

Can you find someone to re pressurise it for you? the clicker will then work, nitrogen needles should be available in your country, you could then do it yourself?



__________________

totallyttrs.com

 



Member

Status: Offline
Posts: 7
Date:
Permalink  
 

I'm looking. Not having much luck finding anyone local that could do it.



__________________


Member

Status: Offline
Posts: 7
Date:
Permalink  
 

**UPDATE** I've found a small Yamaha dealer about 2 hours away that says they can rebuild the whole shock for US$120. I'm going to bring it to them tomorrow!

__________________


Super Guru

Status: Offline
Posts: 2257
Date:
Permalink  
 

Cheap cheap cheap, well done smile



__________________

totallyttrs.com

 



Member

Status: Offline
Posts: 7
Date:
Permalink  
 

Well, the shop called today and told me that they can't source a rebuild kit for this shock (figures) but they could replace the oil and re-gas it and see if it holds. In the meantime they told me that if I could source a rebuild kit, they'd be happy to do the entire rebuild. Anyone have a source for such a kit, or perhaps a kit for another rear shock that would fit it? I've heard that the WR250 rear shock is very similar to the TTR250 internally, but I have no way to verify this.

__________________


Super Guru

Status: Offline
Posts: 8016
Date:
Permalink  
 

Hi Nicholas.

There are links to a UK supplier of the seal head, etc, for the TTR250 shock on the guide but I guess you are looking for a domestic supplier?

Brian



__________________

Exeter, Devon, UK

http://www.ttr250.com  - The one and only dedicated TTR250 FAQ! 
 

TIP: For easy viewing bookmark the "Recent Posts" view - http://ttr250.activeboard.com/p/recent/ 



Member

Status: Offline
Posts: 7
Date:
Permalink  
 

Hi Brian,

 

What all is necessary for a "rebuild"? Is it just the seal head, or are there other necessary components? Domestic would be preferable since I'm supposed to be racing this bike on the 30th of this month.

 

Thanks for any help!



__________________


Member

Status: Offline
Posts: 7
Date:
Permalink  
 

Well, after a lot of time and a ton of frustration I figured I would update this thread. I found a small shop near Atlanta GA called GMD Computrack who were able to rebuild the shock for $311. Interestingly the invoice I received included the RaceTech part numbers used.

SEAL HEAD
p/n: SSSH4614-SK
measurements: 46X14X20

BUMP STOP
p/n: SSBO144439-B/O
measuremnts: 14X44X39

Hope this helps anyone else in the Southeast US looking to get their rear shock rebuilt.

__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.



Create your own FREE Forum
Report Abuse
Powered by ActiveBoard