Cab overview, use, operation 1.13 Pressure relief on the quickhitch couplers Notice ! The hydraulic system of the machine is still pressurised even when the engine is not running! The hydraulic quick couplers can be released, however they cannot be re-attached because the pressure in the hydraulic lines has not been released. 121 98
S
101
☞ Release the pressure as follows: • Lower the telescopic boom • Apply the parking brake
☞ Unlock the 3rd control circuit. To do this: slide lock C on switch 98 in the direction of the Fig. 14: Pressure relief on the quickhitch couplers
arrow and press it to position B • Release lock C ➥ The indicator light on the indicating instrument comes on ➥ 3rd control circuit is unlocked • Stop the diesel engine • Do not switch off ignition • Press and hold switch 101 • At the same time, press and hold potentiometer scroll wheel 121 on the control lever to the left or right about 8 seconds in either position ➥ Pressure in hydraulic lines is released • Switch off ignition and remove the ignition key • Connect the hydraulic lines of the attachment onto the hydraulic connections of the quickhitch
Serv-HB 40702 – Edition 2.0 * 407-02s0310_a4_Übersicht-Bedienung.fm
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