jwrands
Member
I am in the middle of a fork service on my 2013 with 90,000 mi. I found a significant wear pattern on the inside of both upper fork tubes right where the upper bushing normally rides (about 7.5" down from the top of the outer tube). The inner gold coating is completely worn through in an oval pattern on one side of the tube.
I do not know the maintenance history of the bike before I bought it at 70,000 mi. This is the first time the forks have been serviced since I've owned it. The Teflon coating looks good on all bushings except one of the lowers. The fork oil looks pretty dirty.
I am not sure what orientation the fork tube was installed, but I think this type of wear would occur on the rear side of the fork tube. It seems to me that I should be fine to keep running these tubes as long as I rotate the wear spot away from the where the bushing rubs. To complete the fork service I will be installing new linear springs, Penske valves from Stoltec Moto, new SKF seals, and new bushings.
I am posting this just to show the extent of wear that could happen if fork maintenance is neglected, and to alert others about an inspection point that might be overlooked during fork service.
Anyone else have experience with this type of wear? How bad is it?
I do not know the maintenance history of the bike before I bought it at 70,000 mi. This is the first time the forks have been serviced since I've owned it. The Teflon coating looks good on all bushings except one of the lowers. The fork oil looks pretty dirty.
I am not sure what orientation the fork tube was installed, but I think this type of wear would occur on the rear side of the fork tube. It seems to me that I should be fine to keep running these tubes as long as I rotate the wear spot away from the where the bushing rubs. To complete the fork service I will be installing new linear springs, Penske valves from Stoltec Moto, new SKF seals, and new bushings.
I am posting this just to show the extent of wear that could happen if fork maintenance is neglected, and to alert others about an inspection point that might be overlooked during fork service.
Anyone else have experience with this type of wear? How bad is it?
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