76 English 5.906-548.0 Rev. 00 (04/12)1 Piston guide2 Installation screw3 Piston4 Low pressure seal package5 Oil drain screw Remove the low pressure seal packages from thepistons.1 Motor2 Installation screw3 Lockscrew M8x40 or M12x504 Auxiliary screw M6x110 with nuts5 Piston guide WarningDo not let gear oil spill into the environment. Pleaseprotect the soil and dispose of waste oil in a environ-mentally-friendly way. Instead of the cylinder head screws, install twolockscrews M8x40 or M12x50 with large washersdiagonal across and tighten them. Unscrew the oil drain screw and catch the oil. Un-screw both mounting screws and replace with aux-iliary screws M6x110 (special tools). Remove the lockscrews M8x40 or M12x50. Unscrew the mounting screws M6x110 evenlyagainst the pressure of the piston springs. Do nottilt the piston guide during this process. Remove the piston guide and the piston. Check the piston, springs and O-ring for damage;replace if necessary.1 Piston guide2 Puller tool3 Oil seal Remove the oils seals with the puller tool.1 Oil seal2 Installation mandrelNotePlace the new oil seal in water prior to installation. Place the new oil seal onto the installation mandrel(single lip into the groove of the mandrel).6.6.2 Remove the piston guide and replace the oilseals