Marzocchi Fork Oil Change

[skid jackson]

motorex makes a 7.5 wt oil
might have to call around to find someone that carries it. I changed my oil out after abut 20 to maybe 30 hours .. it was pretty dirty. Gonna pull them apart and try a revalve when I get my drz out of the way umm and my trials bike!!

[GMP]

Forget about weights, look at the cts specs @ 40 deg. If you have an oil that works well note its cts, so if you can't get it eaisly you can find something close. I was mixing Honda SS7 and SS8 because it was relatively cheap, available in half liter bottles right in town, and worked very well. No more SS8, so I found the Spectro to be almost the same cts as the average of the SS7 and SS8.

[eff]

I just ordered the Spectro. The Spectro site says it's designed to be run in Zokes.

[eff]

Job done. The original oil looked great so I just changed it.

[GMP]

Did you pull the base valves and cartridges?

If the bike sits for awhile, all the debris settles in the bottom, and will not neccessarily pour out with the old oil, making the oil look clean.

[eff]

No I don't have the tool to hold it. They layed on their side for a good two weeks.

[eff]

OK. As noted in my last post, I don't have the special tool to hold the valving while loosening/tightening the not on the bottom of the fork.

What are you guys using to do this?

[Nick]

Air gun to get it loose. Easy to tighten.

[eff]

OK. I guess I need to look into an air gun. I assume a 3/8" drive would be best considering the torque's are relatively low.

[GMP]

A 3/8" drive is good and less likely to get you into trouble. Sometimes you need a 1/2" the first time as the valve may be too tight for the 3/8". A cheap 1/2" is OK too as they are a lot less powerful than a good one. Just be careful when tightening, one very short burst with the 3/8" is all thats needed, and it will come apart easy next time.

A six-point socket is mandatory for the aluminum base valve, but an impact socket will not fit in the foot. Thats fine because the torque is low anyway. This may sound a little ghetto, but what I found fits very snug (good) on the base valve hex and works well is a common six-point spark plug socket.