Shock bleeding question...

[MikeBusch2]

What's the proper way to bleed the air and excess fluid out of the shock body, with the shaft and piston pushed all the way in, or all the way extended? This changes the volume of fluid in the shock, and makes a difference in how the shock operates, so what's the correct way?

[MrCrash]

I fill it with the shock extended, and then work it up and down slowly to get the air out. Then I top it off almost to the lip of the body, and cap it off.

This may or may not be the proper way to do it, but it works for me :D

[TC3Racer]

when i build my shocks i like to fill them up with oil - ALMOST full, but not quite.
Let them stand in a set of wheels or shock stand for 5-10 minutes so all of the air bubbles rise to the surface.
Now add a bit more oil and screw the shock body INTO the shock cap, while holding the shock at a 45 degree angle with the air bleed hole pointed up. You will see a few air bubbles come out of the air bleed hole, followed by excess oil.
Test the shock once you have the cap tightened. I like my shocks to rebound about half way and make sure they rebound equally.
Good luck!

[LD3Furious]

I fill mine halfway or so. Then move shaft around a bit. Let sit a few minutes to bring air to top. Fill complete to top. Put cap on, screwing one or two threads...just enough to be sure it is threading correctly. Then I hold the cap with the bleedhole oriented so I can look directly at it, with my right hand.With my left, I compress the shaft slowly, holding it at full compression with my pinkie finger. With index and thumb, I twist the body onto the cap slowly, watching the bleedhole.Give the cap one last twist to be sure it is seated totally.This usually ends up with a near perfect, no rebound shock :)

[rocknbil]

After you get the bubbles out, if you cap it off with the shock shaft out of the body, when it gets on the vehicle and on the track, the shaft will be partially inserted in the body causing displacement. This causes a rise in pressure inside the shock. Having nowhere else to go the pressure will go out the seals, causing leaky shocks.

After you fill it up and get the bubbles out, push the shaft almost all the way into the shock body, allowing it to push out the excess oil. THEN cap it off.

[Grant Tokumi]

I used to fill mine with the shaft all the way out for years, but recently I've done the opposite and have been filling it with the shaft all the way in. I think having it "in" or at least partially in is the way to go.

[broncobill]

I fill it with the shock extended, and then work it up and down slowly to get the air out. Then I top it off almost to the lip of the body, and cap it off.

This may or may not be the proper way to do it, but it works for me :D

I do the same thing. Then I push the shaft all the way in, (if it will not go all the way in, open the cap a little and let some lube out) and it should rebound about 1/4 - 1/3 back out.

[rocknbil]

It should not "rebound" at all, if it does, this is evidence there is internal pressure pushing the shaft back out. At worst this leads to leaky shocks and at the very least an unreliable suspension setup.

Shocks are to control the speed at which the suspension moves. Springs provide suspension. If you have "rebound" you're mixing suspension with dampening, and there is no way to measure or control it.