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4
CYLINDERS
DISASSEMBLY AND ASSEMBLY
Piston, piston packing holder
1. Install the piston packing on the piston.
<Boom cylinder, arm cylinder, swing cylinder>
a. Install the O-ring (34).
• If the O-ring is twisted after fitted, correct it.
b. Cover the piston with the sliding jig C, and then,
using the fitting jig D, quickly insert the slipper ring
(35).
c. Since the slipper ring (35) has been extended when
it is installed, correct it using the corrective jig E.
<Bucket cylinder, blade cylinder>
a. Install the packing ring (31), the slipper ring (33) and
the backup rings (32).
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