Pumping up Marzocci Pro ETA?

(Pete Cresswell) said:

Is there a trick to this?

I can pump it up, no problem - but when I unscrew the coupling it gives a "Pffff" that loses most
of the pressure.

Had the same problem on a Fox rear shock once and the fix was to remove the valve core, trim the
stem, and re-install...but this core seems to be in there pretty tight and I'd hate to mess it up
trying to extract something that isn't extractable...

'Zocci pump....'Zocci shock...what's wrong with this picture?

Check the valve stem. Mine was really loose and did the same thing. It's hard to get in there to
tighten it, but if you don't then when you uncrew the pump hose it unscrews the valve.

--
o-o-o-o Ride-A-Lot o-o-o-o
www.schnauzers.ws

"(Pete Cresswell)" <[email hidden]> wrote in message
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Quoted message said:

Is there a trick to this?

I can pump it up, no problem - but when I unscrew the coupling it gives a "Pffff" that loses most
of the pressure.

Had the same problem on a Fox rear shock once and the fix was to remove

the

Quoted message said:

valve core, trim the stem, and re-install...but this core seems to be in

there

Quoted message said:

pretty tight and I'd hate to mess it up trying to extract something that

isn't

Quoted message said:

extractable...

'Zocci pump....'Zocci shock...what's wrong with this picture?
--
PeteCresswell

Here's a quote from the Tech. Area on Marzocchi's site, Pete.

"When unthreading the pump, air loss can usually be heard as it empties from the pump. This is air
pressure from inside the pump itself, NOT the shock."

tinyurl.com2ad8bOpen ↗

I've been there quite a bit lately trying to decipher their manuals. Why do they make one manual for
the whole line of shocks ? Geez !

--
^^^^^^^^^^^^^^^^^^ MBrundage@ease ^^^^^^^^^^^^^^^^^^

Quoted message said:

'Zocci pump....'Zocci shock...what's wrong with this picture?

Some people don't know this, but when you attach the pump to the shock, and you see the pressure go
up on the guage, then that pressure is a certain amount lower than what was in the shock before you
attached the pump. Some of the air from the shock goes into the pump to register the reading, and
since the shock reservoir has such a small volume of air, the overall pressure decreases a
considerable amount.

As Marz says, the pressure that the guage says before you disconnect the pump is the actual pressure
inside the shock. No need to "compensate" by pumping it up a couple of psi.

Now that I've re-read your original post, I'm beginning to think this isn't the problem.

--
Phil, Squid-in-Training

RE/

Quoted message said:

Now that I've re-read your original post, I'm beginning to think this isn't the problem.

We're talking pumping it up to about 80, undoing the connection, re-connecting, and finding 15-
20 psi. This is supported by the super-squishy feel and about 50% compression when just sitting
on the bike.

My workaround has been to pump it up to 80 (hoping not to blow a seal)...then sort of lock the
attachment head and the air hose by kinking it a certain way and rotating the hose
rapidly....instead of the knurled area on the attachment head - gives a higher gear ration, so-to-
speak, and reduces the "pfffft" time.

Like I said, cutting down the little thingie in the middle of the valve stem did the trick on the
Fox rear shock.

Seems to me like the root cause is more in the attachment/detachment of the pump.

--
PeteCresswell

Quoted message said:

Like I said, cutting down the little thingie in the middle of the valve

stem did

Quoted message said:

the trick on the Fox rear shock.

Per your response, it looks like you know what's wrong. You may want to cut down the center push-
tyingy in your pump head instead of the fork.

--
Phil, Squid-in-Training

Quoted message said:

Had the same problem on a Fox rear shock once and the fix was to remove

the

Quoted message said:

valve core, trim the stem, and re-install...but this core seems to be in

there

Quoted message said:

pretty tight and I'd hate to mess it up trying to extract something that

isn't

Quoted message said:

extractable...

The problem is that the core sits so deep down, one can´t use the common core removers that are sold
in the petrol stations. I had a problem with leaking valves too, on my Marthon, and got a special
"core remove tool", it looks like a screwdriver, but has a cut at the tip that grips the core. I was
some 10 USD in Sweden, and I think it was sold via Rockshock but am not quite sure. A biter bikeshop
will know where to get them. Once one has it one can use any core, even those sold in the petrol
stations for car tires.

Per lowdin.nulowdin.nuOpen ↗