Greensmaster 3150Hydraulic System Page 4 -- 4
Towing Traction Unit
In case of emergency, the Greensmaster 3150 can be
towed for a shortdistance. However, Toro does notrec-
ommend this as a standard practice.
IMPORTANT: Do not tow the machine faster than 2
to 3 mph because drive system may be damaged. If
machine must be moved a considerable distance,
transport it on a truck or trailer.
1. Locate by--pass valve o n the rear side of the piston
pump.Rotatevalve90
o
sotheslotinthevalveisvertical.
2. Beforestartingengine,closeby--passvalve byrotat-
ing it back 90
o
so the slot in the valve is horizontal. Do
not start engine when the valve is open.
1. Piston pump 2. By--pass valve
Figure 2
2
1
Hydraulic Hoses
Hydraulichoses aresubject to extremeconditionssuch
aspressuredifferentialsduringoperationand exposure
to weather, sun, chemicals, very warm storage condi-
tionsormishandlingduringoperationandmaintenance.
These conditionscan cause hose damage and deterio-
ration. Some hoses are more susceptible to these
conditions than others. Inspect all machine hydraulic
hoses frequently for signs of deterioration or damage:
Hard, cracked, cut, abraded, charred, leaking or
otherwise damaged hose.
Kinked, crushed, flattened or twisted hose.
Blistered, soft, degraded or loose hose cover.
Cracked, damaged or badly corroded hose fittings.
When replacing a hydraulic hose, be sure that the hose
is straight (not twisted) before tightening the fittings.
This can be done by observing the imprint (layline) on
thehose.Usetwowrenches;holdthehosestraight with
one wrench and tighten the hose swivel nut onto the fit-
ting with the other wrench (see Hydraulic Hose and
Tube Installation in this section). If the hose has an el-
bowatoneend,tightentheswivelnutonthatendbefore
tightening the nut on the straight end of the hose.
For additional hydraulic hose information, refer to Toro
Service Training Book, Hydraulic Hose Servicing (Part
Number 94813SL).
WARNING
Beforedisconnectingor performing any workon
hydraulic system, relieve all pressure in system
(seeRelieving Hydraulic SystemPressureinthis
section).
Keepbodyandhandsawayfrompinholeleaksor
nozzles that eject hydraulic fluid under high
pressure. Use paper or cardboard, not hands, to
search for leaks. Hydraulic fluid escaping under
pressure can have sufficient force to penetrate
the skin and cause serious injury. If fluid is in-
jected into the skin, it must be surgically re-
moved within a few hours by a doctor familiar
withthistypeofinjury.Gangrenemayresultfrom
such an injury.
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