Marzocchi Rebuild

[Ulysses 2]

When do you rebuild a Marzocchi gear and when do you just get a new one?  

[Hydros]

Since I am into hopping, I would just replace the whole thing, I might replace the seal if it's leaks.

But if I were to rebuild them, I'd look for a loss of performance. If I bought them used, I'd look to see if there was any scoring.

If I was to get real fancy, I might hook it up and check the vacuum (inlet side) and check for leak down.  And of course pressure and flow.

But I am unsure what is meant by rebuild?  If the gears are messed up, I'd toss it, or save it in the parts bin.

[Ulysses 2]

I mean changing the O rings in the gear, and those teflon rings. The gear seems to be loseing pressure the fluid in the tank is foaming pretty bad. Ive also lost alot of pressure.  

[Hydros]

Seems like I would replace the gear head.  It sounds like there might be a ton of scoring inside. If you take it apart you may see what I mean along the gear housing.

Take note on how you take it apart. mark everyhting or take pics,  

[Ulysses 2]

Update: I took the gear in 1 of my front pumps apart and the outer (big) O ring was split in 2 . I replaced it and Im gonna rebuild the other front pump tommorrow since I ordered an extra rebuild kit.