1993 Rocky Mountain Thunderbolt
- Thread starter RockiMtn
- Start date
- Feedback
- View
My next step would be to put a socket end over it to protect the valve and use a hammer to tap it..tap it harder then give it a big wack if it's not moved.
Crimping might stop it as iirc that might have crimped against the cap.
Crimping might stop it as iirc that might have crimped against the cap.
okay took to chance and just went with it. tapped it in with a socket, and popped it out by pumping it up. it was very nerve racking to say the least. first side i ended up tapping it in further than i needed. pulled off the ring and started pumping… nadda.
so decided to give the other side a try. this time i tapped it in much more gently and only as much as needed. started pumping, and could see it creep up little by little, then… POP!!! gawd that startled me. really wasn't expecting the result to be so fast, like a popping a cork out of a champagne bottle, but instead of a soft piece of cork, a hard piece of aluminum!!! i could have seriously injured myself if it had hit me in the face i think. thank goodness it was securely fastened to the fork pump hose!
went back to the first leg determined to pop it out as well. so just kept pumping till it came out. but this side had no warning as it didn't creep up like the first, just straight to the pop.
well, gonna call it a night and do the actually servicing another day.
thanks Ben (FC) for all your advise!
so decided to give the other side a try. this time i tapped it in much more gently and only as much as needed. started pumping, and could see it creep up little by little, then… POP!!! gawd that startled me. really wasn't expecting the result to be so fast, like a popping a cork out of a champagne bottle, but instead of a soft piece of cork, a hard piece of aluminum!!! i could have seriously injured myself if it had hit me in the face i think. thank goodness it was securely fastened to the fork pump hose!
went back to the first leg determined to pop it out as well. so just kept pumping till it came out. but this side had no warning as it didn't creep up like the first, just straight to the pop.
well, gonna call it a night and do the actually servicing another day.
thanks Ben (FC) for all your advise!
Attachments
- Feedback
- View
Must have forgotten to mention that part :twisted:
Is that a spring in there?
Is that a spring in there?
found some answers. a common mod to the fork was to put springs into them:
http://forums.mtbr.com/vintage-retro-cl ... 72430.html
http://forums.mtbr.com/vintage-retro-cl ... 72430.html
> hmm… there's no mention or illustration of the springs in the manual
Right. In the past there were tuning kits available, I think in 3 different strengths (some where coloured: yellow, red, green - can somebody confirm?, some where black) - some with plastik caps on the upper and lower end of the forks to better fit the spring in the stanchion tubes, some without.
From my point of view they make sense, if the rider is >100kg, because you can't use high preasures in the old Marzocchi forks without damaging the seals.
Right. In the past there were tuning kits available, I think in 3 different strengths (some where coloured: yellow, red, green - can somebody confirm?, some where black) - some with plastik caps on the upper and lower end of the forks to better fit the spring in the stanchion tubes, some without.
From my point of view they make sense, if the rider is >100kg, because you can't use high preasures in the old Marzocchi forks without damaging the seals.
