General Information
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 or maintenance.
These conditions can cause damage or premature dete-
rioration. Some hoses are more susceptible to these
conditions than others. Inspect the hoses frequently for
signs of deterioration or damage.
WARNING
Before disconnecting or performing any work
on hydraulic system, all pressure in system
must be relieved by stopping the engine and
lowering or supporting the box and/or other at-
tachment.
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 on the hose.
Use two wrenches; one to hold the hose straight and one
to tighten the hose swivel nut onto the fitting.
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 do serious damage. 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 or gangrene
may result.
Hydraulic Fitting Installation
O−Ring Face Seal
Nut
Body
1.
Make sure both threads and sealing surfaces are free
of burrs, nicks, scratches, or any foreign material.
Sleeve
2.
in the groove. It is recommended that the O−ring be re-
placed any time the connection is opened.
Make sure the O−ring is installed and properly seated
Seal
3.
4.
Lubricate the O−ring with a light coating of oil.
Put the tube and nut squarely into position on the face
seal end of the fitting and tighten the nut until finger tight.
Figure 1
5.
Mark the nut and fitting body. Hold the body with a
wrench. Use another wrench to tighten the nut to the cor-
rect flats from finger tight (F.F.F.T.). The markings on the
nut and fitting body will verify that the connection has
been tightened.
Final
Position
Size
F.F.F.T.
4
6
8
10
12
16
(1/4 in. nominal hose or tubing)
(3/8 in.)
(1/2 in.)
(5/8 in.)
(3/4 in.)
(1 in.)
.75 + .25
.75 + .25
.75 + .25
1.00 + .25
.75 + .25
.75 + .25
Mark Nut
and Body
Initial
Extend Line
Position
Finger Tight
After Proper Tightening
Figure 2
Reelmaster 4000−D
Page 4 − 3
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro 4000 D, Toro 98958SL |
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| Document Type | Catalog |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
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| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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