20
Hydraulic System Functions
General
All of the inboard and auxiliary hydraulics are controlled
by the attachment lift control lever. The attachment lift
control lever raises and lowers attachments that utilize
the tractor’s hydraulic lift cylinder. This lever also controls
attachments that use the tractor’s auxiliary hydraulics via
the quick couplers on the front left and right sides of the
frame.
The rate of hydraulic fluid flow and pressure that are avail-
able when using the auxiliary hydraulic quick couplers is
listed in the chart in Figure 5.
The lever has five positions: left, right, back, forward (first
detent) and float (pushed forward to second detent).
Using Inboard Hydraulics
The inboard hydraulics control the tractor’s belly attach-
ment lift (mower deck) and three point hitch lift (if
equipped). The front / rear hydraulic selector switch must
be in the REAR position.
Pulling the lever back raises the attachment lift (A, Figure
6). Pushing the lever forward to the first detent lowers the
attachment lift (B, Figure 6). Pushing the lever forward
to the second detent locks the control in “float” position,
allowing the lift mechanism to float up and down.
a.
B.
7
6
5
4
3
0
100
200
300
400
Implement Flo
w — gpm
Implement Flow @ 3600 RPM
Pressure — psi
Figure 5. Hydraulic System Pressure / Flow
Figure 6. Inboard Hydraulics
Not
for
Reproduction
