im looking for the proper amount of oil to replace the 5 wt with 10 wt. this is a 12" air shock by showa part # 54662-02a so heres the update: found the rite amount and heres how i did the recharge


heres the way i did it.
1 instal a 1/8 npt fitting with a barb end.
2 turn shock upside down and set in a press
3 attach clear line to the barb fitting in stinvck ina metered clear container.
4 compress shock to the bottom and repeat as many times as needed to empty old fluid . should be from 250 to 350 cc
5 remaove hose and turn shock rite side up in press and compress shock to the bottom.
6 fill clean container (i used a new ketchup bottle from old tyme pottery) with 350 cc of 10 wt silkolene pure synthetic oil. then squeeze to fill the clear line and push onto fitting.
7 squeeze bottle until container is empty. then relaese shock from press. reinstall and enjoy!!

 

https://www.hdforums.com/forum/showt...ght=rear+shock

https://www.hdforums.com/forum/touring-models/129136-making-the-stock-shocks-better.html

 

Darren,
When I did mine, I just measured the exact amount that came out, and put the same amount back in. Sorry I don't have the #'s, but it worked well for me. Hope this helps. Craig

 

thanx ultra. i have both of those links. very helpful. just need the amounts so i can put the proper amount back in and also to insure the old oil has drained out completely. kinda **** about such measurements!

 

still lookin for the rite #

 

It's 5 wt oil in them stock and each one holds 328 cc or 11.09 ounces.

 

thanx glide. i emailed cliff piper at piper performance and he say its rite at 350 cc. for 12" shocks. texasbowhunter i used your post to fuind the experts. thanx guys its on for the weekend!!