I bought some old school Z1s (well, 2006) and purchased the shock pump adapter off CRC. http://www.chainreactioncycles.com/sks-marzocchi-adaptor/rp-prod25834

But it doesn’t seem to work properly. when I screw the valve in as tight as I dare it doesn’t seem to go far enough in to release the pin. The only was I can release air is by sticking an allen key in the valve.

I have managed to put air in by tightening the adapter super tight and pumping the shock really fast, but the gauge reading is all over the place – I dont think its measuring the pressure in the forks – just the pressure inside the pump as the valve isn’t fully open.

I really need to know the pressures as there is no less than 4! valves on these forks!

Has anyone else had this problem or do I just have a dodgy adapter?

Have you tried putting a little bit of lube on the o ring of the adapter so it screws in easier? With it attached to the shock pump then screwing in to the valve you should see the gauge move as it opens the valve.

Or have you screwed the adapter in to the pump too hard and it has some how blocked the the air hole?

With it attached to the shock pump then screwing in to the valve you should see the gauge move as it opens the valve.

This is exactly what doesn’t happen – even when the adapter is not connected to the pump, screwing it in does not release any air – so its def not the pump adapter interface.

I have not tried lube yet…

on mine i had to look into the end that screws onto the fork/shock and push the internals away a little bit from the open end
this allowed it to screw on further and thus open the valve on the fork/shock

Have you got a suspension pump similar to this?

http://www.ebay.co.uk/itm/new-bicycle-suspension-shock-pump-GIANT-cycling-MTB-mountain-bike-fox-rock-shox/200974944961?_trksid=p2047675.m1850&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D11%26meid%3D2043521210397204488%26pid%3D100011%26prg%3D1005%26rk%3D1%26rkt%3D5%26sd%3D171022314057%26

on mine i had to look into the end that screws onto the fork/shock and push the internals away a little bit from the open end

What exactly do you mean Lester? The adapter itself doesn’t have any moving parts?

cruzcampo
Its something similar to that – just a normal shock pump – Fox I think. But as I said the pump isnt the problem – the adapter wont engage the valve pin properly.

your SKS version looks alot shorter than my original Marzocchi version.

mines works fine on my 06 z1 freerides.

I suggest you measure the extension below the knurled nut – i will measure the one i have tonight and that may give you a lead going forward.

had the same problem with mine a while back, bought a new adapter, still same problem. Also had the issue on the ‘boost valve’ on a Monarch shock which uses the same fitting using both the Marz and RockShox (red anodized) adapter.

Don’t know what the answer is, since nobody else seems to be struggling with them!

not sure if it helps, but my zocchi shock pump has issues on my fox shock with pressure being lost after one ride. Fox pump works a treat. So sourcing a proper zocchi pump cheap off the bay may be the answer.

“but my zocchi shock pump has issues on my fox shock with pressure being lost after one ride. Fox pump works a treat”

you think it pumps in inferior air or something – if the pressures escaping with the pump un attached its not the pump.

trail_rat

will do – surely there isn’t 2 different types so similar….????
that would be just silly 🙂

But length does seem to be the issue

trail_rat perhaps it loses pressure when I disconnect I don’t know, on my specialised windpipe pump, i’ve got high and low pressure modes, perhaps the zocchi dial could be out too so i’m not putting enough pressure in to seat the seals.

The pressure is lost when you CONNECT not disconnect your pump. So you havent lost pressure between rides.

I think the loss of pressure you see is due to air from your fork/shock filling your pump when you connect it. this causes the pressure to drop in your fork/shock.

The pressure you read when you disconnect your pump relates to the actual pressure in your fork/shock – the air you hear escape comes from within the pump.

I would suspect the difference you see between your 2 pumps equates to the difference in volume of the pumps. A pump with a lower internal volume (a high pressure pump) will steel less air from the fork/shock when you connect it and therefor the pressure you read will be closer to the actual pressure you had. A shock with a greater volume (low pressure pump) will steal more of your air.

cheers for clarification, that could explain it!

What exactly do you mean Lester? The adapter itself doesn’t have any moving parts?

the pin inside the pump on mine was a little too proud and has a small washer it wasnt until i pushed the pin and the washer back that it engaged properly.
mine is a magura pump with little levr that you click down which engages, a bit like a normal pump lever, maybe this is what you need?

I have 2 two different ones, and only the black marzocchi branded one works on my 66’s: the hole in it is drilled offset so it pushes the pin in the valve in when you connect it, and then blows air just to the side of it, rather than the pin going up inside the adapter and not unblocking the valve. It is also longer than the sks one.

julianwilson

Where do I buy one of these special ‘working’ adapters from?

Think I found the little blighter on CRC…

http://www.chainreactioncycles.com/marzocchi-air-valve-adaptor-2012/rp-prod19020

How bizarre to sell one that works and one that doesn’t for a pound less.

Buy cheap – buy twice. That’ll learn me!