TM 10-3930-669-20 2-18.  HYDRAULIC SYSTEM TROUBLESHOOTING (CONT). 6.  SIDE SHIFT CYLINDER DOES NOT OPERATE. INITIAL SETUP Tools and Special Tools Tools and Special Tools Tool Kit, General Mechanic's: Automotive (Item 1.  Appendix B) Pressure gauge 0-5000 PSI (Item 2, Appendix B) STE/ICE-R (Optional) (Item 14, Appendix B) Personnel Required Two Materials/Parts Cap and plug Set (Item 5, Appendix C) Tags, Identification (Item 21, Appendix C) References TM 10-3930-669-10 Equipment Condition Engine OFF (TM 10-3930-669-10) MAIN POWER switch OFF (TM 10-3930-669-10) Parking brake applied (TM 10-3930-669-10) Wheels chocked (TM 10-3930-669-10) KNOWN INFO TEST OPTIONS Nothing. Visual inspection. POSSIBLE PROBLEMS REASON FOR QUESTION Side  shift  cylinder  hose(s)  leaking  or damaged. Priority valve faulty. Stack valve faulty. Side shift assembly faulty. Side shift cylinder faulty. If   side   shift   cylinder   hose(s)   is loose    or    damaged,    side    shift cylinder will not operate. ¬ 2-456