07 sachs? rear shock packing/hard/no rebound?

[GMP]

This originates from les, found on TT about a year ago:

1) Fully open rebound and compression clickers then remove shaft and reservoir piston
2) Drain oil from shock body
3) Clean innards and dry with air
4) Fill body with fluid and watch it drain over to the reservoir
5) Fill reservoir and watch it drain over to the shock body until the reservoir was full
6) once reservoir was full, insert reservoir piston to bottom and from the piston to the reservoir edge it should measure at 79mm
7) While holding piston down, insert shaft assembly to bleed it of air, make sure seal head is on the clevis end.
8) Put shaft seal head towards valve stack again and hold the reservoir piston while inserting shaft, let the shaft seal head get to right where the sealing o-ring is just above the lip of the body and let all the oil drain naturally
9) Once all the excess is drained, finally plunge the seal head sealing o-ring into the body and snap in the ring that holds the seal head and shaft. The reservoir piston will naturally rise when this happens.
10) Measure the piston depth and it should be 68-70mm at this point if you got it right.
11) button her up, she's good to go.

[stainlesscycle]

SO maybe I gotta open it back up. Looks like piston depth is approx 9mm from bottom. Mine is at bottom. How critical is this - I would think I may lose a few mm of travel. Any trick to getting the shaft collar off? I made a pin spanner for it, and it wouldn't budge .


Or could I just remove res cover, pump shock once or twice to move piston down. Set piston depth 68mm. Hold piston with 68mm rod, pump and fill/burp res - fill through adjuster- Button it back up.

[stainlesscycle]

doh! i was under the impression there was no such thing as a manual for this shock. just saw the link, gotta check it out.

[stainlesscycle]

does shaft collar screw off? i've been trying to screw it off, looks like it pops off with a drift?? is it a screw type collar or is it just a press fit 'dust cover'??? also found 10-12 bar (145-175 psi) is nitrogen psi. wold have been nice to have this manual when i built the shock. looks like i'll tear it down again and redo it.




got it all apart. everything looks good, no mechanical issues. just gonna fill it and see what happens.

[stainlesscycle]

got it all done. i can't see how les would get it to bleed out to 68-70mm. there's no air in mine, and i got close at maybe 65mm depth. of course that's why we pay him to do it get well soon, so i can get this thing done right!

it feels no different right now then before., i put 120psi of air in there just to held things still til i get it to my nitrogen guy. hopefully it was just bad fluid...my back is killing me from yesterdays crappy race..

oh, and i forgot to mention - my 07 does not have the rebound check valve.

[Simmo737]

If it still doesn't work, step cut the piston band and see if you can find an oring the same size as the one underneath, maybe one size thicker.

If you can't find one, a husky race tech kit will give you a new piston, band and oring for 150 from oem cycle, you will have to use their valving which I personally think is good.

You can also buy bladder kits, can't remember the place (they sell groovy water pump impellers too) which makes bleeding them way easier

Edit: checkpoint offroad for the bladder.

[lonetree]

Mannual???????????
Link???????
Where?????????

[GMP]

Les has done mine since new and its been updated, pistons faced, and revalved for rocks. Never an issue and no need for a bladder. Just going to do an oil change and inspection. I have a setup I made with a gauge and a zero loss schrader fitting connector. I use this for Tubliss inserts with air but its the same thing needed for shocks with nitrogen.

[moto9]

I don't think rez piston depth is that critical, as long as it doesn't bottom out in either direction.

[Simmo737]

Can you buy no loss schrader fittings? Or are they something you've machined up.

I am waiting for your book on everything bike to come out, it will be a best seller!