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, relieve all pressure in
system. Stop engine; lower or support box
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.
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; hold the hose straight with one and
tighten the hose swivel nut onto the fitting with the other.
Hydraulic Fitting Installation
O–Ring Face Seal
Nut
Body
1.
free of burrs, nicks, scratches, or any foreign material.
Make sure both threads and sealing surfaces are
Sleeve
2.
seated in the groove. It is recommended that the O–ring
be replaced any time the connection is opened.
Make sure the O–ring is installed and properly
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
Mark Nut
and Body
Size
F.F.F.T.
Initial
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.)
0.75 + 0.25
0.75 + 0.25
0.75 + 0.25
1.00 + 0.25
0.75 + 0.25
0.75 + 0.25
Extend Line
Position
Finger Tight
After Proper Tightening
Figure 2
Sand Pro 2020/3020/5020
Page 4 – 3
Hydraulic System (Rev. A)
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro 3020, Toro 5020, Toro 98957SL.Toro 2020 |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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