Hydraulic Hoses; Hydraulic Fitting Installation - Toro Sand Pro 5040 Service Manual

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 all hydraulic hoses fre-
quently for signs of deterioration or damage.
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 in position with one
wrench and tighten the hose swivel nut onto the fitting
with the second wrench.

Hydraulic Fitting Installation

O–Ring Face Seal
1. Make sure both threads and sealing surfaces are
free of burrs, nicks, scratches or any foreign material.
2. Make sure the o–ring is installed and properly seated
in the groove. It is recommended that the o–ring be re-
placed any time the connection is opened.
3. Lubricate the o–ring with a light coating of oil.
4. Put the tube and nut squarely into position on the
face seal end of the fitting and tighten the nut until finger
tight.
5. Mark the nut and fitting body. Hold the body with a
wrench. Use a second wrench to tighten the nut to the
correct Flats From Finger Tight (F.F.F.T.). The markings
on the nut and fitting body will verify that the connection
has been tightened.
Size
4 (1/4 in. nominal hose or tubing)
6 (3/8 in.)
8 (1/2 in.)
10 (5/8 in.)
12 (3/4 in.)
16 (1 in.)
Sand Pro & Infield Pro 3040/5040
Before disconnecting or performing any work
on hydraulic system, relieve all pressure in
system (see Relieving Hydraulic System Pres-
sure). Stop engine and lower or support all at-
tachment(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.
F.F.F.T.
0.75 + 0.25
0.75 + 0.25
0.75 + 0.25
Finger Tight
1.00 + 0.25
0.75 + 0.25
0.75 + 0.25
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WARNING
Nut
Sleeve
Seal
Figure 1
Final
Position
Mark Nut
and Body
Extend Line
After Proper Tightening
Figure 2
Hydraulic System
Body
Initial
Position