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Hydraulic SystemXR620/621/842/1045/1245/1254/1267/1534/2050/3034Parts and consumable materials Danger tags (2)Cartridge valveHydraulic fluid, Dexron III(AW46 for older units with clear fluid)Safety solventBrushClean shop ragsLint-free wiping clothsINITIAL SET-UP1. Park forklift on level surface.2. Set Travel Select lever to NEUTRAL (N).3. Set Parking Brake switch to ON.4. Retract boom and lower carriage. Allow sufficient space to open forklift covers.5. Set Ignition switch to OFF.6. Attach danger tags to steering wheel and ignition key. Refer to para. 2-5, for lockout-tagoutprocedure.7. Relieve hydraulic system pressure as follows:a. Remove air breather from reservoir. Be careful to prevent contamination of air breather orreservoir fittings.b. Depress pressure relief valve in center of reservoir air breather fitting.c. If cartridge valve is installed in a boom lift cylinder, turn manual lowering valve adjustmentscrew (Figure 10-13) fully counterclockwise (CCW) approximately five turns.d. If cartridge valve is installed in the boom extend cylinder, turn manual lowering valveadjustment screw (Figure 10-13) fully counterclockwise (CCW) approximately five turns.REMOVAL1. Gain access to cartridge valve.2. If valve is solenoid-type, refer to para. 8-17 for solenoid removal instructions.3. Use safety solvent, brush, and lint-free wipes to thoroughly clean cartridge valve and surroundingarea.Service Manual Rev 01 – 05/10 8-28P/N 24933-000