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HYDRAULIC FITTINGS
Tightening Flare Type Tube Fittings
1.
Check the flare and flare seat for defects that might cause leakage.
2. Align tube with fitting before tightening.
3. Lubricate connection.
4. Hand tighten swivel nut until snug.
5. To prevent twisting the tube(s), use two wrenches. Place one wrench on the connector body and with the
second, tighten the swivel nut to the torque shown in Table 1-7.
NOTE: The torque values shown are based on lubricated connections as in assembly.
Table 2-15.Torque Specifications For Flare Type Tube Fittings
NUT SIZE
TUBE SIZE OD
(ACROSS
FLATS)
(in)
3/16
1/4
5/16
3/8
1/2
5/8
3/4
7/8
LeeBoy Model 695 Motor Grader
TORQUE VALUE
(in)
(N•m)
7/16
8
9/16
12
5/8
16
11/16
24
7/8
46
1
62
1 1/4
102
1 3/8
122
Information and Specifications
RECOMMENDED TURNS TO
TIGHTEN (AFTER FINGER
TIGHTENING)
(Lb-Ft)
(N•m)
6
9
12
15
34
46
75
90
(Lb-Ft)
1
1/6
1
1/6
1
1/6
1
1/6
1
1/6
1
1/6
3/4
1/8
3/4
1/8
2 2 2
2-15
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