Toro 09172SL Models 30857 30858 Groundsmaster 4500 D 4700 D Service Manual

Hydraulic Hose and Tube Installation (O--Ring Face Seal Fitting)
1.
tube and the fitting are free of burrs, nicks, scratches or
any foreign material.
Make sure threads and sealing surfaces of the hose/
C. Use asecond wrench totightenthe  nutto thecor-
rect Flats From Wrench Resistance (F.F.W.R.). The
markingsonthenutandfittingbodywillverifythatthe
connection has been properly tightened.
2.
As a preventative measure against leakage, it is rec-
ommended that the face seal  O--ring be replaced any
time the connection is opened. Make sure the O--ring is
installedandproperlyseatedinthefittinggroove.Lightly
lubricate the O--ring with clean hydraulic oil.
Size
F.F.W.R.
4
6
8
(1/4 in. nominal hose or tubing)
(3/8 in.)
(1/2 in.)
(5/8 in.)
(3/4 in.)
(1 in.)
1/2 to 3/4
1/2 to 3/4
1/2 to 3/4
1/2 to 3/4
1/3 to 1/2
1/3 to 1/2
10
12
16
3.
Place the hose/tube against the fitting body so that
theflatfaceofthehose/tubesleevefullycontactstheO--
ring in the fitting.
Swivel Nut
Fitting Body
O--ring
4.
Thread the swivel nut onto the fitting by hand. While
holding  the hose/tube  with  a  wrench,  use a  torque
wrench to tighten  the swivel nut to the recommended
installation torque  shown in  Figure 5. This  tightening
process will  require the use of  an offset wrench (e.g.
crowfoot wrench).  Use of an  offset wrench will  affect
torque wrench  calibration due  to the  effective length
change of the torque wrench. Tightening  torque when
usingatorquewrenchwithanoffsetwrenchwillbelower
than the listed installation torque  (see Using a Torque
Wrench with an Offset Wrench in the Torque Specifica-
tions section of Chapter 2 -- Product Records and Main-
tenance).
Tube or Hose
Figure 3
5.
If a torque wrench is not available or if space at the
swivel nut prevents use of a torque wrench, an alternate
method of assembly is the Flats From Wrench Resist-
ance (F.F.W.R.) method (Fig. 2).
Mark Nut
and Fitting
Body
Final
Position
A.  Usingawrench,tightentheswivelnutontothefit-
tinguntillightwrenchresistance   isreached(approxi-
mately 30 in--lb).
Initial
Position
Extend Line
AT WRENCH RESISTANCE
AFTER TIGHTENING
B.  Mark the  swivel nut  and fitting  body. Hold  the
hose/tube with a wrench to prevent it from turning.
Figure 4
Fitting Dash Size
Hose/Tube Side Thread Size
9/16 -- 18
Installation Torque
4
6
18 to 22 ft--lb (25 to 29 N--m)
27 to 33 ft--lb (37 to 44 N--m)
37 to 47 ft--lb (51 to 63 N--m)
60 to 74 ft--lb (82 to 100 N--m)
85 to 105 ft--lb (116 to 142 N--m)
110 to 136 ft--lb (150 to 184 N--m)
140 to 172 ft--lb (190 to 233 N--m)
11/16 -- 16
8
13/16 -- 16
10
12
16
20
1 -- 14
1 3/16 -- 12
1 7/16 -- 12
1 11/16 -- 12
Figure 5
Groundsmaster 4500--D/4700--D
Page 4 -- 7
Hydraulic System
Product Specification
CategoriesLawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals
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- 298 pages
Document TypeService Manual
LanguageEnglish
Product BrandToro. 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 TypePDF
Publishertoro.com
Wikipedia's PageToro Company
CopyrightAttribution Non-commercial
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