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Specifications
10.4 Hydraulic Fitting Torque
Values
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
Hex
Tube
Size
Size
Torque value
Across
OD
Flats
lbf•ft
Inches
Inches
3/16
7/16
6
1/4
9/16
11–12
5/16
5/8
14–16
3/8
11/16
20–22
1/2
7/8
44–48
5/8
1
50–58
3/4
1-1/4
79–88
1
1-5/8
117–125
Values shown are for non-lubricated connections.
44
GE, GX Series
Backhoe
Flats From
Finger Tight
N•m
Flats
Turns
8
2
1/6
15–17
2
1/6
19–22
2
1/6
27–30
1-1/4
1/6
59–65
1
1/6
68–79
1
1/6
107–119
1
1/8
158–170
1
1/8
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