Not much point in undoing the two piston bolt nuts just to put them back the same. Replacing the piston ring is a good idea though if the shock went for a long time without service.
Hi Simon, always amazed seing your service :) I did the same service yesterday on my shock, and the bleeding part was pain in the a**. Always kind of micro bubbles and after 2 hours trying bleeding the shock i gave up to have result without zero bubbles. So still have micro bubbles inside :(
If you keep the oil pressurized as much as possible during the cycling then the micro bubbles are much less prevalent. Don't suck on the syringe unless you are pushing the oil into it from the shock side to always keep it pressurized. Also aggressively cycling the shock without IFP pressure will cause the some amount of foaming/cavitation generally, which is to be avoided also. Just some tips, but it gets a lot easier after doing a few of these.
@@simonszoke1479 Many thanks Simon. I will follow your tips. Very detailed and helpful :) I will retry bleeding the shock. Thanks again. Apreciate it mate. Greetings from germany.
It is an MTB Hydraulics syringe with a Fox 803-00-463 fitting. Syringe: www.mtb-hydraulics.com/product-page/suspension-bleed-syringe-for-fox-and-ohlins-fittings
Ciao! Grazie per il video molto utile! Posso chiederti che attrezzo usi per gonfiare dopo che avviti la valvola ? Non riesco a trovarlo per poterlo regolare la pressione con la pompa per le forcelle..Ti ringrazio in anticipo
Hey Simon, I was wondering if you can service cheap shocks, like SR Suntour Raidon. I recently got my hands on it and was surprised there is no valve of any kind on the IFP chamber. No pellet or valve, just a screw with a gasket. Does that basically mean these are unserviceable, or is there some special tool to pressurize them? I found no info on the internet, and SR Suntour doesn't provide any workshop manuals. For now, I MacGyvered a valve assembly I screw into the hole. It works, just sticks out and looks janky.
I've serviced cheap shocks like that and never came across one that was not possible to service with a bit of improvisation. Not familiar with the specific shock you are talking about but possible that they started cutting more corners.
The shock specific adapter you need to buy from Fox. Part numbers 803-00-463 or 803-01-691 depending on the model year. The syringe is here: www.mtb-hydraulics.com/product-page/suspension-bleed-syringe-for-fox-and-ohlins-fittings
Just did this and the shock shaft when pushed in like you did at the end returns extremely slowly and not all the way unlike yours. Resi pressure set at 100 and rebound set open and did the correct Ifp spacing. What do you think I did wrong?
On the performance series shocks with no HSR adjustability, you can only set the rebound so fast, meaning it will return slower. It should extend all the way though. It's not necessarily a problem if it extends slower. if it's not extending all the way, one thing could be that there is air in the damper, which is compressible. It allows the IFP to bottom out before the shock can extended, and at that point the oil is no longer pressurized (so it stops extending). Barring a poor bleed, I suspect it is ok. It is important to bleed these with a bleeding machine or syringe though because the piston captures a lot of air on this shock.
@@simonszoke1479 thanks for your response, that’s really helpful. Yeah I think my bleed wasn’t very good so I’ll give it another go. I’m also looking at putting a lighter shim tune for both rebound and compression. How do you know which is the lightest and which is the firmest shim tune on the Fox x2 part information page, do they go down in order? Thanks for your help.
@@WM84629 CL or some similar acronym indicates "compression light" and RL for the rebound. There are light, medium, and firm tunes available generally from Fox. The part description will indicate which one it is.
@simonszoke1479 if your changing the leaf springs and shims. How do you put the valving back together without the Fox tool they say you need that's 400?
I don't know of a brake that uses this fitting, but all model years of DHX2s have the same bleed port threads (thus use the same fitting). The fitting is Fox part number 803-00-463 and the syringe is this: www.mtb-hydraulics.com/product-page/suspension-bleed-syringe-for-fox-and-ohlins-fittings
What about Main Piston VVC Rebuiled, they described in official Service procedure??
Not much point in undoing the two piston bolt nuts just to put them back the same. Replacing the piston ring is a good idea though if the shock went for a long time without service.
Hello dudee!, what is the thread pitch and measurement of the fox purge head? to see if I can make it by hand on a lathe?
I believe it's 6-32 threads, but you can just check the bleed screw.
Hi Simon, always amazed seing your service :) I did the same service yesterday on my shock, and the bleeding part was pain in the a**. Always kind of micro bubbles and after 2 hours trying bleeding the shock i gave up to have result without zero bubbles. So still have micro bubbles inside :(
If you keep the oil pressurized as much as possible during the cycling then the micro bubbles are much less prevalent. Don't suck on the syringe unless you are pushing the oil into it from the shock side to always keep it pressurized. Also aggressively cycling the shock without IFP pressure will cause the some amount of foaming/cavitation generally, which is to be avoided also. Just some tips, but it gets a lot easier after doing a few of these.
@@simonszoke1479 Many thanks Simon. I will follow your tips. Very detailed and helpful :) I will retry bleeding the shock. Thanks again. Apreciate it mate. Greetings from germany.
Hello, which pre-adapter for the fill machine adapter do you use on the syringe? Thanks for the reply.
It is an MTB Hydraulics syringe with a Fox 803-00-463 fitting. Syringe: www.mtb-hydraulics.com/product-page/suspension-bleed-syringe-for-fox-and-ohlins-fittings
@simonszoke1479 Thanks
Ciao! Grazie per il video molto utile! Posso chiederti che attrezzo usi per gonfiare dopo che avviti la valvola ? Non riesco a trovarlo per poterlo regolare la pressione con la pompa per le forcelle..Ti ringrazio in anticipo
Thank you :)
Hey Simon, I was wondering if you can service cheap shocks, like SR Suntour Raidon. I recently got my hands on it and was surprised there is no valve of any kind on the IFP chamber. No pellet or valve, just a screw with a gasket. Does that basically mean these are unserviceable, or is there some special tool to pressurize them? I found no info on the internet, and SR Suntour doesn't provide any workshop manuals. For now, I MacGyvered a valve assembly I screw into the hole. It works, just sticks out and looks janky.
I've serviced cheap shocks like that and never came across one that was not possible to service with a bit of improvisation. Not familiar with the specific shock you are talking about but possible that they started cutting more corners.
@@simonszoke1479 gotcha, yes, improv time it is :) thank you again!
Where I can buy the syringe and needed connectors?
The shock specific adapter you need to buy from Fox. Part numbers 803-00-463 or 803-01-691 depending on the model year.
The syringe is here: www.mtb-hydraulics.com/product-page/suspension-bleed-syringe-for-fox-and-ohlins-fittings
Just did this and the shock shaft when pushed in like you did at the end returns extremely slowly and not all the way unlike yours. Resi pressure set at 100 and rebound set open and did the correct Ifp spacing. What do you think I did wrong?
On the performance series shocks with no HSR adjustability, you can only set the rebound so fast, meaning it will return slower. It should extend all the way though. It's not necessarily a problem if it extends slower. if it's not extending all the way, one thing could be that there is air in the damper, which is compressible. It allows the IFP to bottom out before the shock can extended, and at that point the oil is no longer pressurized (so it stops extending). Barring a poor bleed, I suspect it is ok. It is important to bleed these with a bleeding machine or syringe though because the piston captures a lot of air on this shock.
@@simonszoke1479 thanks for your response, that’s really helpful. Yeah I think my bleed wasn’t very good so I’ll give it another go. I’m also looking at putting a lighter shim tune for both rebound and compression. How do you know which is the lightest and which is the firmest shim tune on the Fox x2 part information page, do they go down in order? Thanks for your help.
@@WM84629 CL or some similar acronym indicates "compression light" and RL for the rebound. There are light, medium, and firm tunes available generally from Fox. The part description will indicate which one it is.
Do you think these shocks have decent reliability?
They are quite good. I find RockShox has much better reliability for the SD Coil shocks, but it's also a much less sophisticated design.
If i change the shim stack i need the 400 dollar tool tho?
No
@@simonszoke1479 how do you set the preload then?
??? Please update
@@shredbroinc2988 I don't understand your question.
@simonszoke1479 if your changing the leaf springs and shims. How do you put the valving back together without the Fox tool they say you need that's 400?
Is the syringe same as brake bleed syringe to accept the bleed adaptor and is it the same adapter as 2021 and prior? I have a pre 2021 dhx2.
I don't know of a brake that uses this fitting, but all model years of DHX2s have the same bleed port threads (thus use the same fitting). The fitting is Fox part number 803-00-463 and the syringe is this: www.mtb-hydraulics.com/product-page/suspension-bleed-syringe-for-fox-and-ohlins-fittings
@@simonszoke1479 thanks dude! That’s the info I needed.
Exactly what I’ve been looking for! Just bought it
This dude is so rough, I’m glad he ain’t working on my suspension