Using The Hydraulic Control - Toro Workman 07390 Operator's Manual

can cause poor performance or damage to the brakes,
axle, engine, transaxle, steering, suspension, body
structure, or tires.
Important:
To reduce potential for drive line
damage, use low range.
When towing fifth-wheel attachments, like a fairway
aerator, always install the wheel bar (included with the
fifth wheel kit) to prevent the front wheels from lifting
off the ground if the towed attachments movement is
suddenly impaired.

Using the Hydraulic Control

The hydraulic control supplies hydraulic power from
the machine pump whenever the engine runs. The
power can be used through the quick couplers at the
rear of the machine.
CAUTION
Hydraulic fluid escaping under pressure can
have sufficient force to penetrate skin and do
serious damage.
Use care when connecting or disconnecting
hydraulic quick couplers. Shut off the
engine, engage the parking brake, lower the
attachment, and place the remote hydraulic
valve in the float detent position to relieve
hydraulic pressure before connecting or
disconnecting the quick couplers.
Important:
If multiple machines use the
same attachment, cross contamination of the
transmission fluid may occur. Change the
transmission fluid more frequently
Using the Hydraulic-Bed-Lift Lever
to Control Hydraulic Attachments
•
O Position
FF
This is the normal position for the control valve
when it is not being used. In this position the work
ports of the control valve are blocked and any load
is held by the check valves in both directions.
•
R (Quick Coupler "A" Position)
AISE
This is the position which lifts the bed, rear hitch
attachment or apply pressure to quick coupler A.
This also allows hydraulic fluid to return from quick
coupler B to flow back into the valve and then out
to the reservoir. This is a momentary position and
when the lever is released it spring returns to the
center, O position.
FF
1. Quick coupler A position
•
L (Quick Coupler B Position)
OWER
This position lowers the bed, rear hitch attachment,
or apply pressure to quick coupler B. This also
allows hydraulic fluid to return from quick coupler
A to flow back into the valve and then out to
the reservoir. This is a momentary position and
when the lever is released it spring returns to the
center, off position. Momentarily holding and then
releasing the control lever in this position provides
hydraulic-fluid flow to quick coupler B, which
provides power down on the rear hitch. When
released, it holds the down pressure on the hitch.
Important:
If used with a hydraulic cylinder,
holding the control lever in the lower position
causes the hydraulic-fluid flow to go over a
relief valve which can damage the hydraulic
system.
•
O Position
N
This position is similar to Lower (quick coupler B
position). It also directs hydraulic fluid to quick
coupler B except that the lever is held in this
position by a detent lever in the control panel.
This allows hydraulic fluid to flow continuously
to equipment that uses a hydraulic motor. This
position must only be used on attachments
with a hydraulic motor attached.
Important:
If used with a hydraulic cylinder
or no attachment, the O
hydraulic-fluid flow to go over a relief valve
which can damage the hydraulic system. Use
this position only momentarily or with a motor
attached.
Important:
Check the hydraulic-fluid level
after installation of an attachment. Check the
operation of the attachment by cycling the
attachment several times to purge air from
36
Figure 37
2. Quick coupler B position
position causes the
N
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