2005 Ski-Doo RT Series Shop Manual, Page 286Get this manual
Section 07 REAR SUSPENSION Subsection 03 (SHOCK ABSORBER INSPECTION AND SERVICING)
Damper gas pressure cannot be confirmed by using pressure gaugeThe volume of gas in the shock is very small, and the amount lost during gauge installation will lower the pressure too much and require refillingAfter recharging is complete the rebuilt shock should be bench-testedStroke the shock to ensure full travel and smooth compression and rebound actionIf the shaft moves in or out erratically this could indicate too much air is trapped insideIf the shaft will not move or has partial travel then it may be hydraulically lockedIn either event the shock must be rebuilt againPay particular attention to the placement of the IFP, quantity of oil and shim stackpiston assembly