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Quick-Lock (Fig. 22)
WARNING
Always make sure that the pressure relief valve is in the open (0) position, before you
connect hydraulic hose(s) to the pump.
•
Check the couplers for dirt and damage and clean them if necessary.
•
Push the couplers into each other. The external ring of the female coupler will automatically move in
the opposite direction to the arrows and lock.
•
Check whether the couplers can not be pulled apart with a normal manual effort and check that the
snap ring is in the correct position.
4.3.3
Installing the saddle
By default, the cylinders are equipped with a plain saddle. This plain saddle can be removed and
replaced with a tilting saddle.
•
Remove the plain saddle from the plunger with a quick short pull.
•
Install the tilting saddle with a sharp push until it clicks and locks.
NOTICE
A double acting lock nut cylinder is supplied with a tilting saddle by default.
Always use the cylinder with the tilting saddle to prevent damage to the cylinder.
4.3.4
Saddles for hollow plunger cylinders (models HHJ and HAHC)
Hollow plunger cylinders can be equipped with a standard hollow saddle or a threaded hollow saddle.
Both types of saddles are mounted in the plunger by a threaded connection.
To avoid the plunger from turning during mounting of the saddle. Pump out the cylinder until the piston
touches the stopring and some pressure is build up in the cylinder.
WARNING
Always make sure the saddles are fully screwed into the plunger. The threaded connection is
designed to keep the saddle in position. Not to take the full cylinder force.
Not taking this warning into account may lead to severe damage to the plunger head.
4.4
During use
4.4.1
During use
•
Prevent damage to the unit.
•
Continuously monitor the behaviour of the load.
•
Always lift and prop the load in steps. (with a lock nut cylinder, the lock nut can be used)
•
Use a tommy bar for turning the lock nut. Never place your hand between the cylinder and lock nut .
•
On cylinders without a stop ring, the red O-ring indicates the end of the stroke. Do not extend the
plunger any further.
•
On cylinders with a stop ring, the stop ring is designed to absorb the full force, but if possible do not
use the full stroke of the plunger. This will reduce plunger wear.
•
The retraction speed of the plungers inside gravity, spring and air return cylinders is slowed down
due to restrictions in the oil return path.
•
Use more cylinder capacity than the load requires:
Symmetric load: total cylinder capacity = 1.5 x load
Asymmetric load: total cylinder capacity = 2 x load
HYDRAULIC CYLINDERS
916.000.851_009
EN
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