Written by Wally Wallace
Monday, 18 June 2007 06:00
The Attic -
Let me preface this by saying that the entire overhaul comes down to having a few special tools... The Rock Shox Mag series busing puller, stanchion vice blocks and a seal press. Without these tools you should not attempt an overhaul. Bring the fork to your Local Bike Shop or send it to our friend B Rose at Shockspital
So you think you need an overhaul.... The Mag forks tended to need servicing periodically to keep them running smooth. The forks where not sealed as well as most of the newer forks and if you rode in wet areas the oil in your fork would contaminate quickly. So if you haven't changed the oil in a while and you are still riding a Mag series fork you are due for an overhaul. If you see oil leaking from the fork leg around the seal... You are due for an overhaul. If you fork does not hold air.... You are in need of work but the Enduro seals are not going to help. The Enduro seals seal the oil in the fork. There is another seal at the top cap that seals in the air. This seal is not currently available and may render your fork unrideable. Before you throw it in the used parts bin drop Bikeman or Shockspital an email and see if we can help you out.
On to the overhaul. The first step is to take remove the fork legs from the crown. By un bolting the fork brace and loosening the bolts on the crown you can remove each leg from the bike. This makes it very easy to work on the fork legs. So why don't current forks use this system you might ask. Well anything bolted is inherently going to flex more. This was not a stiff fork by any means and even with an aftermarket fork brace would still flex more than any fork on the market today. I will take a stiffer fork in a high speed corner over ease of servicing any day.
After the fork leg is removed from the bike you will need to pry up the dust seal. The Mag forks had a dust seal that is visible at the top of the lower leg. This can be carefully pried up with a small flat head screw driver. Work around the fork slowly as we will need to reuse this seal. Once you have the dust seal off you will be able to see the main seal in the lower leg with a Snap Ring holding it in place. You will need a set of