drca Posted September 19, 2016 Report Share Posted September 19, 2016 I took my Marzocchi fork apart yesterday (2013 GG TXT Pro) for service as well as to gt the lower powder coated. When I looked at the bushings it looks like there is some type of thin film (teflon?) coating the friction side of the bushings. Is this normal? The film on the bushing inside the lowers are scratched? (see photos below) Is that a problem? If I want to change them, what's the procedure and what tools to I need? Thanks, DC Quote Link to comment Share on other sites More sharing options...
lineaway Posted September 20, 2016 Report Share Posted September 20, 2016 Don`t worry about it till you have new bushings in your hand. They will just slide up out of the seal cup. You can see the seam in the picture. Quote Link to comment Share on other sites More sharing options...
drca Posted September 20, 2016 Author Report Share Posted September 20, 2016 Don`t worry about it till you have new bushings in your hand. They will just slide up out of the seal cup. You can see the seam in the picture. So I can put the fork back together as is? To pull the bushing out, do you need some type of "puller" that grabs them from the bottom? How tight of a fit are they? (don't have the fork lowers with me, they are at the shop getting powder coated). Thanks. Quote Link to comment Share on other sites More sharing options...
lineaway Posted September 20, 2016 Report Share Posted September 20, 2016 A small right angled pick (or two) will just lift it out. Maybe a little at a time. Just don`t scratch the wall. Quote Link to comment Share on other sites More sharing options...
drca Posted September 20, 2016 Author Report Share Posted September 20, 2016 A small right angled pick (or two) will just lift it out. Maybe a little at a time. Just don`t scratch the wall. Great, that I can do (I can even make a tool for that). Couple of more questions: Do I need a seal driver to put the bushing and seal back in? I can make one out of schedule 40 1.5" PVC pipe (ID is actually 1.610"= 40.mm) so no big deal. Any idea what's the coating on the bushings? Looks like there is the same stuff on the swing arm bushings.DC Quote Link to comment Share on other sites More sharing options...
lineaway Posted September 20, 2016 Report Share Posted September 20, 2016 The bushing will slide right in, always use a little grease when assembling hydraulics. The pvc will work fine on the seals. Bushings are usually Teflon coated. Good luck. I hope you have a new set of fork guards to protect them forks. Quote Link to comment Share on other sites More sharing options...
zippy Posted September 20, 2016 Report Share Posted September 20, 2016 If you have sent the fork lowers to be powdercoated with the bushing still installed the heat from the coating process may damage the coating on the bushings. Quote Link to comment Share on other sites More sharing options...
mbeers6 Posted September 20, 2016 Report Share Posted September 20, 2016 Has anyone else replaced their bushings? I have around 300 hours and haven't looked at mine. Wondering how long they will typically last? Quote Link to comment Share on other sites More sharing options...
baldilocks Posted September 21, 2016 Report Share Posted September 21, 2016 They knock under breaking when they need changing Quote Link to comment Share on other sites More sharing options...
uksg85 Posted September 29, 2016 Report Share Posted September 29, 2016 The tolerances between lower leg bushings can vary however when the fork has no oil in you should notice some play once the stanchion is inserted into the lower leg, however once the forks oil has been applied the oil fills the said tolerances between the stanchion and the teflon coated bush. The damage from those photos should be something that needs to rectified (unless you want pinstripes on the stanchions). Removal is easy as said by others, just pull them out with a blunt pick or alternatively you can buy a bush removal tool which is basically a rod, sliding hammer, a plate and a few nuts. I would have the bushes replaced after the powder coating and also remove any paint from the surface where your oil & wiper seals seat into the castings and also the inner cast where your wheel axle slots and the pics bolt recesses/threads. Ensure that the lower set of bushes are seated at the exact height into the castings as set from factory or else you may have a lot of movement and a fork which won't compress very far! have fun. Quote Link to comment Share on other sites More sharing options...
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