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918070/FP0811
3-27
Printed in U.S.A.
Auxiliary Hydraulics Connections
Figure 3-36 shows the three quick connections on the
dipper arm meant for auxiliary hydraulics, which are
for the following:
•
1:
Pressure line (male connector)
•
2:
Large return line (female connector)
•
3:
Pressure line (female connector)
Figure 3-36 Auxiliary Hydraulics Connections
Connecting the Quick Couplings
1. Park the machine on firm and level ground.
2. Extend the dipper arm cylinder halfway and
position the boom/dipper arm so the auxiliary
hydraulic connectors are positioned as shown in
Figure 3-36.
3. Stop the engine.
4. Turn the ignition key to position 1.
5. Release pressure from the bucket cylinder by
moving the left control lever to the left and right.
6. Lift the left control lever base as a safety
precaution.
7. To connect each coupling:
a. If necessary, rotate lock sleeve (2, Figure 3-37)
so notch (3) aligns with lock ball (4).
b. Pull lock sleeve (2) down in the direction of
arrow (5).
c. Insert the attachment coupling into the corre-
sponding auxiliary hydraulics connection cou-
pling.
d. Release lock sleeve (2) so it snaps into place
and locks the couplings together. Verify the
lock sleeve (2) is snapped closed and the cou-
pling is securely locked together.
e. Twist lock sleeve (2) so notch (3) is NOT
aligned with lock ball (4), to help prevent acci-
dental de-coupling.
Disconnecting the Quick Couplings
1. Perform steps 1 through 6 in “Connecting the
Quick Couplings” on page 3-27 before proceeding
to the next step.
2. To disconnect each coupling:
a. Pull lock sleeve (2, Figure 3-37) down in the
direction of arrow (5).
b. Listen for the hissing sound to verify that any
pressure has been released from the connec-
tion.
c. Twist lock sleeve (2) so notch (3) is aligned
with lock ball (4).
d. Push lock sleeve (2) up in the direction of
arrow (6) to disconnect the coupling.
Figure 3-37 Quick Coupling Connections
IMPORTANT
Follow the instructions in the operator’s
manual from the attachment manufacturer
for connecting the attachment to the
machine’s auxiliary hydraulics machine’s
auxiliary hydraulics.
1
2
3
2
4
3
5
6
Summary of Contents for 503Z
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