Wacker Neuson 28Z3, Service Manual

Page: 220 / 264

7-20
SHB 28Z3 EN – Edition 2.0 * 28z3s710.fm
Options
7.11 Hydraulic quickhitch (Easy Lock)
Hydraulic quickhitch connections
• Connections A for hydraulic quickhitch
• Supply via pipe line B
Opening and closing pressure of hydraulic quickhitch
• Closing pressure 50 bar (725 psi) when a function is activated
➥
Otherwise a circulation pressure of about 15 bar (218 psi)
• Opening pressure 206 bar (2990 psi)
Danger!
For system-specific reasons, the hydraulic quickhitch opens and closes with
the functions “Stabiliser blade”, “Auxiliary hydraulics”, “Boom swivel” and
“Rotate upper carriage”
For reasons of safety, only use the function “Raise stabiliser blade”
to open or close!
7.12 3rd control circuit
Function
The 3rd control circuit allows you to operate a range of attachments with up to 3 hydraulic
circuits.
•
The 3rd control circuit is actuated proportionally via the slide switch on the left-hand
side joystick
➥
If the machine is equipped with a 3rd control circuit option, a control valve with an
additional segment for the 3rd control circuit is installed
Diagram
Fig. 10: Hydraulic Easy Lock quickhitch connections
A
B
Fig. 11: 3rd control circuit
OPTION
T
T2
B7
A7
A
P
BV
B
Pb7
P3
Pa7
Pa7
P2
Joystick (right)
3rd control circuit