Toro 07390 Workman HDX-Auto, Руководство по обслуживанию, Страница: 188 / 280

Workman HDX Auto Page 7 − 4 Hydraulic System
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 condi-
tions 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 fitting
with the other wrench (See Hydraulic Hose and Tube
Installation in this section). If the hose has an elbow at
one end, tighten the swivel nut on that end before tight-
ening 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
Before disconnecting or performing any work on
hydraulic system, relieve all pressure in system
(see Relieving Hydraulic System Pressure in this
section).
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 in-
jected into the skin, it must be surgically re-
moved within a few hours by a doctor familiar
with this type of injury. Gangrene may result from
such an injury.