Skip to content
View in the app

A better way to browse. Learn more.

Trials Central

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Changing Fork Seals, 40Mm Marzocchi.

Featured Replies

Clean it a bit. I have marked all my forks so I place them back in the same manner. Small dot on the top yoke and on the fork tube with a shizzle.

 

 

Remove wheel/brake/front fender.

 

Loosen the top yoke alen screws. Loosen the top caps a bit (only because later this is more difficult. Loosen the other 2 allen screws and remove the fork.

 

Remove the top cap and alen screw on the bottom and let the fork empty its old oil. Push it in and out to remove the last bit of oil.

 

Remove dust cap with a screw driver or something (if you have plastics). Remove the small spring whichs holds the seal. Now push on the inner leg and the seal will come loose.

 

Clean everything and reversly put it back together.

 

 

/only after typing this I thaught of the idea to post a link to a film of jim which explains it probably way better and more clear. https://www.youtube.com/watch?v=AP-v_c0g0mw

Edited by crazybond700

  • Author

Thanks very much, any idea what weight oil I should be using? I weigh 80kg (on a bad day) and like bouncing around. Also how much oil to fill each leg? Admittedly I've not watched the video yet as I'm at work with poor mobile internet so if it's covered there apologies.

  • Author

Clean it a bit. I have marked all my forks so I place them back in the same manner. Small dot on the top yoke and on the fork tube with a shizzle.

Remove wheel/brake/front fender.

Loosen the top yoke alen screws. Loosen the top caps a bit (only because later this is more difficult. Loosen the other 2 allen screws and remove the fork.

Remove the top cap and alen screw on the bottom and let the fork empty its old oil. Push it in and out to remove the last bit of oil.

Remove dust cap with a screw driver or something (if you have plastics). Remove the small spring whichs holds the seal. Now push on the inner leg and the seal will come loose.

Clean everything and reversly put it back together.

/only after typing this I thaught of the idea to post a link to a film of jim which explains it probably way better and more clear. https://www.youtube.com/watch?v=AP-v_c0g0mw

That video states "not Marzocchi 40mm" so not sure how much help that would be.

It's pretty frustrating because I'm a mechanical engineer so can do most things once I've been shown once but just don't have anyone to show me lol

Its pretty much the same deal.

 

 

The capacity is different for each fork (one is rebound other compression).

 

Here is some more info http://www.trialscentral.com/forums/topic/34074-09-gas-gas-pro-fork-oil/on the alu tubes forks but its bassically the same.

 

See http://www.trialscentral.com/forums/topic/34074-09-gas-gas-pro-fork-oil/for info

http://advrider.com/forums/showthread.php?t=1018648

 

Edited by crazybond700

  • Author

Its pretty much the same deal.

The capacity is different for each fork (one is rebound other compression).

Here is some more info http://www.trialscentral.com/forums/topic/34074-09-gas-gas-pro-fork-oil/on the alu tubes forks but its bassically the same.

See http://www.trialscentral.com/forums/topic/34074-09-gas-gas-pro-fork-oil/for info

http://advrider.com/forums/showthread.php?t=1018648

Thanks, good info there.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.