3-112 BA 50Z3/6003 en – Edition 4.3 * * 5003b340.fm
Operation
3.61 Connections for auxiliary hydraulics
Follow the instructions in the Operator’s Manual of the attachment manufacturer
for connecting the auxiliary hydraulics to attachments.
Quickhitch couplings
Removing the coupling
☞ Release the pressure in the work hydraulics – see chapter 3.56 Releasing the pressure
on the operating hydraulics on page 3-102.
☞ Stop the engine.
☞ Raise the control lever base.
☞ Turn lock sleeve C toward lock ball B.
☞ Pull lock sleeve C upward.
☞ The coupling opens.
Connecting the coupling
☞ Release the pressure in the work hydraulics – see chapter 3.56 Releasing the pressure
on the operating hydraulics on page 3-102.
☞ Raise the control lever base.
☞ Remove dirt from the coupling (extends the service life of the coupling).
☞ Position the coupling onto the stick ram connection making sure it is straight.
☞ Then immediately couple the coupling onto the connection on the stick making sure it
is straight.
☞ Turn back the lock again (away from lock ball B).
Stick (left-hand side)
Stick (right-hand side)
Fig. 229: Connections for auxiliary hydraulics
TW S
S T WV
Port Stick (left) Stick (right)
S
Auxiliary hydraulics Auxiliary hydraulics
T
3rd control circuit (option) 3rd control circuit (option)
V
Unpressurized return to hydraulic tank
W
Grab operation (option) Grab operation (option)
B
C
Fig. 230: Grab couplings
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