Hitachi ZX27U-2 Operator's Manual page 156

Quick Coupler
1. Connection Procedure
1.1 While pulling and fully turning socket ring (1)
counterclockwise, insert socket ring (1) onto plug
(3) until the end face of socket ring (1) comes in
contact with plug (3).
1.2 Release socket ring (1). Check that socket ring (1)
is slightly moved backward by the spring force and
that the coupler is held in position with balls (2). Be
sure to check that socket ring (1) has been moved
back fully to the right original position.
2. Disconnection Procedure
2.1 While pulling and fully turning socket ring (1)
counterclockwise, disconnect the coupler. As no
check valve is provided in the coupler, take care that
oil may flow out of the coupler when the coupler is
disconnected.
2.2 After the coupler is disconnected, plug the holes
with the exclusively prepared plugs.
IMPORTANT:
•
Take care not to damage the joint surfaces
when disconnecting or connecting the coupler.
•
Before disconnecting or connecting the
coupler, clean the coupler and its surroundings
with a cleaning solvent and completely wipe off
the cleaning solvent. Use extra care not to
allow foreign matter such as dirt to enter the
coupler.
•
Disconnect or connect the coupler in the
correct procedure. Confirm by inspection that
no oil leak is present after connecting the
coupler.
•
After connecting the coupler, check that that
socket ring (1) has been moved back fully to
the right original position.
MAINTENANCE
7-36
3 1
2
M1M7-07-006