Toro ProPass 200 Service Manual page 21

4. Thread the hose/tube 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 recom-
mended installation torque shown in Figure 9. This tight-
ening process will require the use of an offset wrench
(e.g. crowfoot wrench). Use of an offset wrench will af-
fect torque wrench calibration due to the effective length
change of the torque wrench. Tightening torque when
using a torque wrench with an offset wrench will be lower
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).
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. 8).
A. Using a wrench, tighten the swivel nut onto the fit-
ting until light wrench resistance is reached (approxi-
mately 30 in--lb).
B. Mark the swivel nut and fitting body. Hold the
hose/tube with a wrench to prevent it from turning.
Fitting Dash Size
4
6
8
10
12
16
20
ProPass 200
Hose/Tube Side Thread Size
9/16 -- 18
11/16 -- 16
13/16 -- 16
1 -- 14
1 3/16 -- 12
1 7/16 -- 12
1 11/16 -- 12
Figure 9
Page 3 - - 7
C. Use a second wrench to tighten the nut to the cor-
rect Flats From Wrench Resistance (F.F.W.R.). The
markings on the nut and fitting body will verify that the
connection has been properly 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.)
Mark Nut
Final
and Fitting
Position
Body
Extend Line
AT WRENCH RESISTANCE
Figure 8
Installation Torque
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)
F.F.W.R.
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
Initial
Position
AFTER TIGHTENING
Hydraulic System