Towing A Trailer With The Vehicle; Hydraulic Control - Toro 07385 Operator's Manual

Towing a Trailer with the
Vehicle
The Workman is capable of pulling trailers and attachments
of greater weight than the vehicle itself.
Several types of tow hitches are available for the Workman,
depending on your application. Contact your Authorized
Toro Distributor for details.
When equipped with a tow hitch bolted onto the rear axle
tube, your Workman can tow trailers or attachments with a
Gross Trailer Weight (GTW) up to 1587 kg (3500 lb). Always
load a trailer with 60% of the cargo weight in the front of
the trailer. This places approximately 10% (272 kg (600 lb)
max.) of the Gross Trailer Weight (GTW) on the tow hitch
of the vehicle.
Trailer brakes are required whenever you tow a trailer over
680 kg (1500 lb) GTW is towed behind a Workman vehicle.
When hauling cargo or towing a trailer (attachment), do not
overload your vehicle or trailer. Overloading 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 5th wheel attachments, like a fairway aerator,
always install the wheely bar (included with the 5th wheel kit)
to prevent the front wheels from lifting off the ground if the
towed attachments movement is suddenly impaired.

Hydraulic Control

The hydraulic control supplies hydraulic power from the
vehicle pump whenever the engine is running. The power can
be used through the quick couplers at the rear of the vehicle.
Important: If multiple vehicles use the same
attachment, cross contamination of the transmission
fluid may occur. Change the transmission fluid more
frequently
Control Lever Positions
•
Off Position
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 will be held by the
check valves in both directions.
•
Raise (Quick Coupler "A" Position)
This is the position which will lift the bed, rear hitch
attachment or apply pressure to quick coupler A. This
also allows return oil 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 off position.
1. Quick coupler A position
•
Lower (Quick Coupler B Position)
This position will lower the bed, rear hitch attachment,
or apply pressure to quick coupler B. This also allows
return oil 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 will provide
flow to quick coupler B which provides power down
on the rear hitch. When released, it will hold the down
pressure on the hitch.
Important: If used with a hydraulic cylinder,
holding the control lever in the lower position causes
the oil flow to go over a relief valve which can
damage the hydraulic system.
•
On Position
This position is similar to Lower (quick coupler B
position). It also directs oil to quick coupler B except
that the lever is held in this position by a detent lever in
the control panel. This allows oil 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 On position causes the oil 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 hydraulic oil level after
installation of an attachment. Check the operation
of the attachment by cycling the attachment several
times to purge air from system, then recheck
hydraulic oil level. The attachment cylinder will
slightly affect transaxle oil level. Operation of vehicle
with low oil level can damage the pump, remote
hydraulics, power steering, and the vehicle transaxle.
30
Figure 29
2. Quick coupler B position