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Workshop => Suspension and Chassis => Topic started by: 96motorhead on September 14, 2016, 11:05:59 PM

Title: 1985 atc250r shock linkage bushing and seals rebuild kit
Post by: 96motorhead on September 14, 2016, 11:05:59 PM

Can anyone show me where I can buy a linkage rebuild kit for a 1985 atc250r?  I can find a rebuild kit for 1986 and newer bikes but not for the 1985.

Title: 1985 atc250r shock linkage bushing and seals rebuild kit
Post by: broken1 on September 15, 2016, 12:42:03 AM

Aren't the only differences between the 85 & 86 in the axle, carrier & brake caliper mount? The linkages should all use the same bushings & seals. I recently rebuilt the linkage on an 86 trx & kept all the old bushings & seals. I can take measurements or send you the used bushings & seals so you can compare them to yours.

Title: 1985 atc250r shock linkage bushing and seals rebuild kit
Post by: The_Steve_Man on September 15, 2016, 07:08:51 AM

The bolt that goes through the bottom of the linkage and shock is bigger on the 85.

The sprocket hub is different and carrier is smaller OD on the 85. The brake stay and caliper mount is also different.  

The carrier rebuild kit is the same as the 86 and up and the caliper is the same on all years.

Title: 1985 atc250r shock linkage bushing and seals rebuild kit
Post by: 96motorhead on September 15, 2016, 10:17:37 AM

Quote from: broken1;69567

Aren't the only differences between the 85 & 86 in the axle, carrier & brake caliper mount? The linkages should all use the same bushings & seals. I recently rebuilt the linkage on an 86 trx & kept all the old bushings & seals. I can take measurements or send you the used bushings & seals so you can compare them to yours.

Thanks for the offer, if no one knows where to get a kit I might have to measure them all out.

Title: 1985 atc250r shock linkage bushing and seals rebuild kit
Post by: 96motorhead on September 15, 2016, 10:18:45 AM

Quote from: The_Steve_Man;69570

The bolt that goes through the bottom of the linkage and shock is bigger on the 85.

The sprocket hub is different and carrier is smaller OD on the 85. The brake stay and caliper mount is also different.  

The carrier rebuild kit is the same as the 86 and up and the caliper is the same on all years.

Is the lower linkage bolt diameter bigger or is it longer?

Title: 1985 atc250r shock linkage bushing and seals rebuild kit
Post by: The_Steve_Man on September 15, 2016, 11:17:42 AM

Larger diameter

Sent from my MotoG3 using Tapatalk

Title: 1985 atc250r shock linkage bushing and seals rebuild kit
Post by: JTRtrx250r on September 15, 2016, 02:44:06 PM

you might have to go with the 86-89 kit and use the lower bolt from 86 on

good luck to you!

Title: 1985 atc250r shock linkage bushing and seals rebuild kit
Post by: broken1 on September 16, 2016, 12:26:33 AM

Quote from: The_Steve_Man;69578

Larger diameter

Sent from my MotoG3 using Tapatalk

Are the bushings in the links at the shock connection also larger ID because of the larger dia bolt?

Title: 1985 atc250r shock linkage bushing and seals rebuild kit
Post by: The_Steve_Man on September 16, 2016, 06:24:47 AM

Yes, everything is bigger. You can get the wishbone and dog bone from an 86 or 87 and use it.

Title: 1985 atc250r shock linkage bushing and seals rebuild kit
Post by: broken1 on September 16, 2016, 12:21:03 PM

Since the bushing bore ID's in the links are larger on the 85 for the larger dia bolt than it stands to reason that the bolt hole in the shock would be larger as well so an 86 shock would be needed if changing to the 86 links. Or just make bushings for the 85 shock.

Title: 1985 atc250r shock linkage bushing and seals rebuild kit
Post by: mx250r91 on September 21, 2016, 09:36:09 AM

The ATC shock linkage bolts (85 and 86) are 1mm smaller than the TRX bolts, hence the TRX linkage bushing kit wont work on an ATC. What I did on my 85 was use the 86 TRX linkage and bolt and enlarge the lower shock clevis hole to fit the larger bolt.

(http://i97.photobucket.com/albums/l209/mx91a/Mobile%20Uploads/IMG_20160730_144826725_zpsevlxa6xi.jpg)

(http://i97.photobucket.com/albums/l209/mx91a/Mobile%20Uploads/IMG_20160730_144909419_zpslokfqv70.jpg)