Mec 3072ES, Руководство по обслуживанию и запасным частям

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"3072ES / 3772ES / 3772ES HD" Service & Parts Manual October 2008
Page 1-19
Cylinder Assembly
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.
To avoid cutting the seals, do not use sharp edged tools during seal
replacement. After installing seals allow at least one hour for the seals to
restore to their original shape before assembling the cylinder.
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 seals of the head and reinstall it on the shaft, by
slipping head over the piston end of the shaft being very careful not to damage the inside
seals.
4. Place a small amount of fluid on the inside seals of the piston and reinstall it on the shaft by
slowly twisting the piston on over the threads of the shaft being very careful not to damage
the inside seals.
5. Reinstall the shaft nut; torque 1½” nut to 160 ft.-lbs. (216.8 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.
17. Reinstall the cylinder retainer. Installation is reverse of removal.
18. Cycle the cylinder using air to check for proper operation.
NOTE: It is very important to keep all parts clean when working with hydraulic
cylinders, even one small piece of dirt or grit can damage the cylinder.