Renovating the Honda S90 forks
When fork seals start to leak, road handling is affected as the forks loose their oil. Sometimes oil can also find its way onto the brakes.
This document shows how to dismantle the forks and replace the seals.
When fork seals start to leak, road handling is affected as the forks loose their oil. Sometimes oil can also find its way onto the brakes.
This document shows how to dismantle the forks and replace the seals.
First the forks were removed from the bike. For this the bike was propped up under the front to lift the front wheel clear of the ground.
Then the wheel was removed and the Mudguard.
With the top fork nut remove the pinch bolt on the lower triple tree was undone and held apart while the stanchion was extracted.
With the forks on the bench the spring gator, spring and top trim part were removed from the fork tube. (The S90 forks have an external spring only).
The working area was checked for pitting or damage which can damage the seal.
The lower fork was held in the vice soft jaws and a hose clip combined with the the mole grips was used to undo the screw-on collar which contained the seal.
The upper and lower fork bush (shown here) were inspected for wear.
The top cap seal was removed using a combination of tapping out from underneath and levering out from the top.
Care was taken not to damage the O-ring although this was also removed and cleaned as part of the service.
The new seal was pushed in on the arbor press with a 27mm socket being used to apply an evenly spread force.
The fork cap was screwed back into place with some Copper grease on the threads in case it needed to be removed again in the future.
Then the lower washer, spring and gator were replaced.
120ml of 10w-30 oil was added to each fork.
The bike back together and ready for a test drive.
Drag & Drop Website Builder