TM 10-3930-671-24 Table 2-2.  Unit Troubleshooting Procedures - CONTI MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION HYDRAULIC SYSTEM (CONT.) 10. LOAD CANNOT BE LIFTED TO MAXIMUM HEIGHT - CONT. Step 2. Check hydraulic pump output pressure (Appendix F, Hydraulic System, Section 10.0). If hydraulic pump pressure is below 2500 psi (17237 kPa), adjust hydraulic pump (Appendix F, Hydraulic System Relief Pressure Check & Adjustment, Section 10.2). If hydraulic pump pressure is still below 2500 psi (17237 kPa), hydraulic pump is faulty.  Notify DS/GS maintenance. If hydraulic pump pressure is 2500 psi (17237 kPa), main hydraulic valve is faulty. Notify DS/GS maintenance. 11. OIL LEAKS AT TOP OF LIFT CYLINDER(S). Step 1. Check lift cylinder vent line for blockage (Appendix F, Upright Maintenance, Section 13.0). If vent line is blocked, replace vent line (Appendix F, Upright Maintenance, Section 13.1). If vent line is not blocked, go to step 2. Step 2. Lift cylinder(s) faulty. Replace faulty lift cylinder(s).  Notify DS/GS maintenance. 12. OIL LEAKS AT END OF TILT CYLINDER(S). Tilt cylinder(s) faulty. Replace faulty tilt cylinder(s) (Appendix F, Tilt Cylinder Maintenance, Section 10.7). 13. OIL LEAKS AT TOP OR END OF SIDESHIFT CYLINDER. Sideshift cylinder faulty. Replace faulty Sideshift cylinder.  Notify DS/GS maintenance. 14. UPRIGHT LIFT SPEED SLUGGISH. Step 1. Replace hydraulic fluid filter (Appendix F, Hydraulic Sump - Fluid and Filter Change, Section 10.1). If upright lift speed is still sluggish, go to step 2. 2-10