9.3 Hydraulic Fitting Torque
Tightening Flare Type Tube Fittings
1.
Check flare and flare seat for defects that might cause
leakage.
2.
Align tube with fitting before tightening.
3.
Hand-tighten swivel nut until snug.
4.
To prevent twisting the tube, use two wrenches. Place
one wrench on the connector body and tighten the
swivel nut with the second. Torque to values shown.
If a torque wrench is not available, use the FFFT (Flats From
Finger Tight) method.
Hydraulic Fitting Torque
Tube
Size
OD
Hex
Size
Across
Flats
Torque value
Flats From
Finger Tight
Inches Inches
lbf•ft
N•m
Flats
Turns
3/16
7/16
6
8
2
1/6
1/4
9/16
11–12
15–17
2
1/6
5/16
5/8
14–16
19–22
2
1/6
3/8
11/16
20–22
27–30
1-1/4
1/6
1/2
7/8
44–48
59–65
1
1/6
5/8
1
50–58
68–79
1
1/6
3/4
1-1/4
79–88
107–119
1
1/8
1
1-5/8
117–125 158–170
1
1/8
Values shown are for non-lubricated connections�
WP245 / WP275
3-Point Hitch Firewood Processor
Troubleshooting
47
