Marzocchi shocks

[Bob Seymour]

I inadvertently made the mistake of putting this inquiry originally in the parts for sale forum and didnt get much response. I have a set of Marzocchi AG-4 65  shocks on the 79 KTM 250MC I am restoring. One of the shocks seems to work fine and has noticable dampening. The other did not exhibit any and would go up and down with no dampening control at all. I took this shock and removed the screw at the upper mounting eyelet above the piggyback cannister and filled it with 10W Bel-Ray fork oil. The shock now works like a champ and is not exhibiting any leaks either. I have checked  all the past posts on this subject and cant seem to find a answer on what and how much to charge the cannisters. I went to a Ducati site that had some info on the Marzocchi Strada shock(street version)which is very similar to my shocks and I could have sworn it  said to charge with 28 to 40 psi of air. Other info says to use nitrogen, but at what pressure I am not sure. Anybody who can weigh in with some conclusive and definitive information on these questions would be greatly appreciated

[Rocket]

Use 30psi of nitrogen.  The way you filled with oil, you more than likely have air in the body and you have a good chance of rupturing the N2 bladder.
Rocket