113
7d
CYLINDER
Jig
U-ring
221W104E
Backup ring
221W105E
Bushing
221W106E
Direction to insert the cushion bearing
Cylinder inner diameter:
50 or less
Cylinder inner diameter:
55 or greater
221W107E
Snap ring
Plate
Cushion bearing
Check valve
221W108E
Reassembly of the piston
2.
1. Fitting of the U-ring
Insert the U-ring into the U-ring groove of the piston
with stretching.
Make sure if the direction of the U-ring is correct.
It might be easier to fit the U-ring if it is heated to
about 70
, or the hydraulic oil is applied on it.
If an insertion jig as shown in the illustration on the
right is used, the U-ring can be fitted easily and safely.
2. Fitting of the backup ring
Insert the backup ring behind the U-ring.
(Refer the illustration on the right.)
3. Fitting of the bushing
Put the bushing on the bushing groove of the piston
with expanding at the joint.
(Refer the illustration on the right.)
4. Fitting of the check valve, the plate and the cushion
bearing.
Fit the check valve, the plate (only for cylinders with
an inner diameter of
55 or greater) and the cushion
bearing, the piston with this order.
Be careful about the direction of the cushion bearing.
After fitting them, fit the snap ring into the groove in
the piston.
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