Case CX490D Operator's Manual page 343

Crawler excavator
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Servicing instructions
WARNING
Improper operation or service of this machine can result in an accident.
If you do not understand a maintenance procedure, or doubt your ability to perform a maintenance
procedure correctly, see your authorized dealer.
Failure to comply could result in death or serious injury.
Modification of the quick coupler without prior authorization can cause serious injury. Do not carry out any modification
without authorization. Consult your CASE CONSTRUCTION Dealer.
Daily checks:
• Check that the locking bar functions correctly and that
it is not fouled by foreign matter.
• Check the quick coupler cylinder hoses for free move-
ment.
• Check for any signs of cracks.
Incorrect functioning
NOTICE: make sure that the attachment is in full contact
with the ground before carrying out the following checks.
If the quick coupler does not work correctly, check the
following items:
• That no pin is broken, bent or lost.
• That no foreign matter is fouling the safety device.
• That the cylinder is not damaged or bent.
• That there are no leaks from hydraulic hoses, etc.
If the problem persists after all these checks, consult your
CASE CONSTRUCTION Dealer.
9 - ACCESSORIES
9-37
W0157A
3
SMIL13CEX2822AB

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