BA 35101/02/ 03 EN – Edition 1.0 * 35101_02_03b340.fm 3-97
Operation
3.63 Additional control circuit (4th control circuit proportional controls option)
Operation of 4th control circuit
Quick couplers with hydraulic hoses are installed on the loader unit of the wheel loader for
the operation of hydraulic attachments with additional hydraulic functions (e.g. high-tilt
bucket with clamp).
The additional control circuit is operated electronically (proportional controls) by means of
scroll wheel 107 on the control lever (joystick) and a solenoid valve on the control valve.
Clean the quick couplers carefully before connecting an attachment in order to
ensure proper function and sealing features!
☞ Operation of 4th control circuit
• Pick up and safely lock the attachment in the quickhitch
–seeFitting a standard bucket onto the quickhitch on page 3-66
Before starting work, make sure the attachment is safely locked onto the quick-
hitch by means of the lock ram!
☞ You must be able to see the lock pins on either side of the mounting holes
on the attachment!
• Stop the engine but leave the ignition switched on
• Apply the parking brake
• Release the oil pressure in the 4th additional control circuit with scroll wheel 107 on
the control lever
• Remove quick couplers A from the dummy sockets and insert them in the quick
couplers on the attachment
• Start the engine
• Operate the 4th additional control circuit (proportional controls) with scroll wheel 107
on the control lever (joystick)
See the Operator's Manuals of the attachment manufacturers for installing and
operating the attachments!
Fig. 151: 4th control circuit (option)
A
107
To Next Page
Loading...
