Case CX490D, Operator'S Manual

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9 - ACCESSORIES
Hydraulic quick coupling system
WARNING
Crushing hazard!
Never put your hands inside the quick coupler when the engine is running. Turn off the engine and
wait for all movement to stop.
Failure to comply could result in death or serious injury.
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WARNING
Hazard to bystanders!
ALWAYS make sure the work area is clear of bystanders and domestic animals before starting this
procedure. Know the full area of movement of the machine. Do not permit anyone to enter the area
of movement during this procedure.
Failure to comply could result in death or serious injury.
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NOTICE: The quick coupler extends the length of the arm. Make sure to check the operating range of the coupled
attachment in order to avoid risk of hitting the cab or the machine frame.
NOTICE: Never operate with a quick coupled hydraulic breaker over a long period of time, in order to reduce the risk
of premature wear, failures or breakage of the quick coupler. Never use the breaker as a lever, as the stress would
be borne by the quick coupler cylinder.
NOTICE: Make sure to read and understand the Operator's Manual of the hydraulic quick coupler for proper installa-
tion, usage and maintenance.
NOTICE: The CASE CONSTRUCTION quick coupling system is supplied by the high pressure hydraulic system of
the machine. Refer to Chapter 8 for the maximum working pressure of the hydraulic system. Make sure to use a
quick coupler that is suitable for proper and safe operation with high pressure hydraulics. For information consult the
CASE CONSTRUCTION dealer.
Attachment engagement
To engage the attachment using CASE CONSTRUCTION
quick coupling system proceed as follows:
1. Make sure the attachment to be installed is laying
safely on flat and level ground.
2. Select the H work mode.
3. Slide the lock device and press the back side of the
quick coupler switch (1) to set the unlocking status of
the quick coupling system. The audible alarm device
starts sounding.
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4. Operate the arm and bucket controls so that the arm is
practically vertical, sloping slightly towards the cab to
release the safety device. Extend the bucket cylinder
rod completely and maintain the hydraulic pressure
for approximately
5 – 10 s so that the latching hook
retracts.
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