Marzocchi 48mm CC Forks

[Vindicator]

Originally Posted by GMP

If you overfill the carrtridge, will the excess oil be pushed out the bleed holes when inserting the comp / PFP assembly? This is confusing as Leo has said it does, and Evan Yarnell has said it does not. It makes sense that it should. Could there be differences in the forks?

I did not overfill but I can imagine it would be pushed out the bleed holes until the PFP o-rings seal the space below those holes. My understanding is that these o-rings seal the PFP and are responsible for maintaining the inner pressure, no oil should pass by these o-rings with the consequence of losing your desired PFP pre-load. I'm not sure but I think that if you overfill the cartridge you will be pushing the PFP up more than the 7mm standard pre-load Evan mentioned .
I can tell you that the more oil you add the more painful is to close the cap . I would like to see what machine they use at Marzocchi to close this cartridge

Originally Posted by GMP

I would think that the reason one extends slower is due to less pressure, which is due to less PFP preload, lower piston position from a leak. What size orings?

Yes, I hope that's the reason . I don't know yet, I have to tear the cartg apart again

[GMP]

Why don't they just set the bleed hole/piston position so the correct PFP preload is acheived once the oring passes by the hole? Just like a KYB or Showa. I guess that would be too easy. So you have to get a perfect oil level for an accurate preload I assume.

Maybe check bleed hole area for a burr that could have damages oring.

[GMP]

I just talked to Les, he's feelin' good back at work and has done some of these lately. He agreed with Evan, its not like a KYB, you must get the oil height correct after bleeding for the right PFP preload or the cap will be near impossible to get on. Maybe thats why Leo had to resort to tiedowns to compress the spring?

[Leo]

I think that you have to overfill the cartridge and close it. Then push the piston up to bleed the air that is trapped inside the cartridge.
Please, correct me if I wrong.

[GMP]

You would think so. I'm going to call him again when I have mine apart next week.

[Boomhauer]

Originally Posted by GMP

You would think so. I'm going to call him again when I have mine apart next week.

This is a good thing Glenn. I will be calling you when I get my bike. Girard & I will be changing out my fork springs & shock spring for my fat azz. I will need the inside scoop from you. I have never been inside the Zook forks.

[Hoobs]

Wonder if it matters what position the PFP has when assembly of the inner chamber?

[Leo]

PFP with 0 turns is way more easy.

[fasteddy]

I'm changing out my fork springs on the 48 zokes.. Anything special I need to know...


Ed....

[Leo]

Originally Posted by Vindicator

... no oil should pass by these o-rings with the consequence of losing your desired PFP pre-load. I'm not sure but I think that if you overfill the cartridge you will be pushing the PFP up more than the 7mm standard pre-load Evan mentioned .

When the PFP piston goes too up, the oil will escape in an small recess that has in the PFP axle to this purpose. Not in the outer diameter. Just like Showas.