Hydraulic Hoses - Toro Groundsmaster 3500 30807 Service Manual

Hydraulic Hoses

Hydraulic hoses are subject to extreme conditions such
as pressure differentials during operation and exposure
to weather, sun, chemicals, very warm storage condi-
tions or mishandling during operation and maintenance.
These conditions can 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
the hose. Use two wrenches; hold the hose straight 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 in this chapter). If the
hose has an elbow at one end, tighten the swivel nut on
that end before 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).
Hydraulic System
Before disconnecting or performing any work
on hydraulic system, relieve all pressure in
system. Stop engine; lower or support cutting
units and/or other attachment(s).
Keep body and hands away from pin hole leaks
or 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 injected into the skin, it must be surgi-
cally removed within a few hours by a doctor
familiar with this type of injury. Gangrene may
result from such an injury.
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Groundsmaster 3500