If the shock does not fully extend, it is in a 'stuck down' condition. SHOCK- 2023 All Coil Shocks (DHX2 and DHX models) SHOCK- 2023 FLOAT DPS and FLOAT X.If your shock has an EVOL air sleeve, you must cycle the shock after every 50psi addition while filling.If the shock body retracts into the air sleeve near bottom-out after the air is slowly released from the positive chamber, attach a FOX high pressure pump and pressurize the shock to 250 psi/ 17 bar).If your shock has an EVOL air sleeve, you must release air pressure slowly to stop from inducing a 'stuck down' condition. Have a look at the manual for your specific RP23 or download it from the fox website. Tech Tuesday - Rebuilding your Fox RP23 by spoiledgoods Add to Favorites Views: 59,004 Faves: 208 Comments: 2 Check out the service guides on the Fox website for more information.Remove the air cap and depress the Schrader valve, to completely release air pressure from the positive chamber of the shock.Carefully cycle the suspension through its entire travel. To test whether the shock is in fact 'stuck down': Remove the main air chamber air cap and let all the air out of the main air chamber. A 'stuck down' condition results from a failure of the dynamic air seal (located between the positive and negative air chambers within the shock air sleeve), resulting with the negative chamber retaining a higher pressure than the positive chamber. WARNING: Never attempt to pull apart, open, disassemble, or service a FOX shock that is in a 'stuck down' condition.
