Mec Speed Level 2684 RT Service And Parts Manual page 50

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CAUTION:
• To insure a quality repair, cylinder parts must be thoroughly cleaned, dry, and free of solvents,
and assembly must be performed in a clean area free of dust and contamination.
• Do not use sharp edged tools during seal replacement. After installing seals wait at least one
hour before assembling the cylinder to allow the seals to return to their original shape.
• Torque all hardware according to the Hydraulic Components Torque Table unless otherwise
specified.
1. Lubricate all components with clean hydraulic fluid.
2. Install new seal kit components. Install all seals on the head and piston using the
non-sharp seal tool.
3. Place a small amount of fluid on the inside head seals. Reinstall the head on the shaft
by slipping head over the piston end of the shaft. Be very careful not to damage the
inside seals.
4. Place a small amount of fluid on the inside seals of the piston. Reinstall the piston on
the shaft by slowly twisting the piston onto the threads of the shaft. Be very careful
not to damage the inside seals.
5. Reinstall the shaft nut. Torque 1 ½" nut to 160 ft. lbs. (216 Nm).
6. Grease the outside seals of the head and piston.
7. Reinstall the shaft into the barrel of the cylinder and push in until groove of the head
lines up with the slot in the barrel.
8. Reinstall the cylinder retainer. Installation is reverse of removal.
9. Cycle the cylinder using air to check for proper operation.
NOTE: Keep all parts clean when working with hydraulic cylinders. Even one small piece of dirt or grit can damage
the cylinder.
October 2009
Page 1-30
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S S E M B L Y
"3084 Speed Level™ Sigma Lift" Service and Parts Manual
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E N E R A L Y L I N D E R E P A I R