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3. Remove the housing from the vise jaws and with the inlet openings over a container to catch
the oil, drain as much hydraulic oil as possible from the housing.
4. Grasp the cylinder housing in copper–covered or leather–covered vise jaws with the
shroud (31) upward and using 1/4" allen wrench, unscrew and remove.
WARNING
In the following step, the Shroud will spring to a straightened position when the Screws at
one end are removed. Hold the Shroud in position until the Screws are removed and control the
flex of the loose end.
5. Use a hex wrench to unscrew and remove the shroud mounting screws (32). Remove the
shroud.
6. For 56580, 56581, 56582 and 56583 models, use a hex wrench to unscrew and remove the
retract pin hole plugs (2) from each side of the housing.
7. If the piston assembly is not fully retracted, use a brass drift or brass hammer to tap the
assembly inward until the retract pin (21) aligns with the cross holes in the housing.
Use a small drift to tap the retract pin out of the drive plate (18) and piston assembly through
the openings in the housing.
7a. For 56581 socket head cap screws are used in the place of retract pin. Use hex wrench to
remove screws from each size fo drive plate.
8. For 56578, 56572, 56579 and 56580, and 56581 models, insert a hex wrench through
the larger opening in the square drive and unscrew the square drive locking pin (14) while
pulling or pushing the square drive out of the tool. For 56582 and 56583 models, unscrew
and remove the square drive retaining screw (35). Pull the square drive out of the tool.
9. For 56578, 56572, 56579, 56580, and 56581 models, remove the drive plate, assembled
with the ratchet (17), drive segment (19) and segment springs (20) from between the ears of
the housing. Using finger pressure, push the sleeves (16) inward to remove them from the
housing.
10. For 56581, 56582 and 56583 models, remove the two drive sleeve retainers (36) from
the housing. Pull one of the drive sleeves (16) out of the housing and while holding the
drive plate, the ratchet (17), segment pawl (19) and segment pawl springs (20), pull the
remaining drive sleeve out of the housing.
11. Being careful not to let the springs eject from the assembly, slide the ratchet, drive segment
and segment springs out of the drive plate.
WARNING
Cylinder gland is staked into the housing to prevent it from loosening due to vibration or
turbulence in the hydraulic oil flow. The stake point must be drilled out before attempting to
remove the cylinder gland.
12. Sujete los pernos de la glándula cilíndrica (40) con los agujeros de la glándula del cilindro y
desatorníllela usando un vaso hexagonal en la parte hexagonal. En caso de que la glándula
no gire libremente después de su ruptura inicial, podría ser necesaria una perforación
adicional, en pequeños incrementos, para eliminar la obstrucción.
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