TM 9-2320-366-34-1 2-1086 TEST OPTIONS REASON FOR QUESTION Faulty holding valve will cause cylinder to drift down. KNOWN INFO 1. YES Visual inspection Does right outrigger remain in stowed position? START 2. Is flow through right outrigger control valve OK? YES KNOWN INFO TEST OPTIONS REASON FOR QUESTION Three Way Control Valve Assembly Flow Test Repair three way control valve assenbly (para 16-27). WARNING Read WARNING on following page. l3.  M1084/M1086 MATERIAL HANDLING CRANE (MHC) RIGHT OUTRIGGER (JACK) DRIFTS OR DOES NOT WORK INITIAL SETUP   Equipment Conditions     Engine shut down (TM 9-2320-366-10-1).   Personnel Required     (2)   Tools and Special Tools     Tool Kit, Genl Mech (Item 78, Appendix B)     Tester, Hydraulic (Item 73, Appendix B)     Pan, Drain (Item 43, Appendix B)     Goggles, Industrial (Item 28, Appendix B) POSSIBLE PROBLEMS Hydraulic oil level OK. Hydraulic hoses, tubes, and fittings OK. Faulty holding valve. Faulty control valve. Faulty thermal relief valve. Faulty outrigger jack cylinder. Replace right outrigger jack cylinder (para 16-26). Hydraulic oil level OK. Hydraulic hoses, tubes and fittings OK. Holding valve OK. POSSIBLE PROBLEMS Faulty control valve. Faulty thermal relief valve. Faulty outrigger jack cylinder. Faulty control valve will cause stabilizer outrigger jack cylinder not to operate. NO NO Materials/Parts   Rag, Wiping (Item 60, Appendix C)   Hose (2) (Item 40, Appendix C)   Fitting (2) (Item 31, Appendix C)   Fitting (Item 32, Appendix C)   Adapter, Pipe (Item 1, Appendix C)   Reducer, Tube (Item 61, Appendix C)