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SPECIFICATIONS
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. Lubricate connection and hand tighten swivel nut until snug.
4. 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.
5. The torque values shown are based on lubricated connections as in reassembly.
Nut Size
Across
Flats
(in.)
Torque
Value•
(N.m) (lb-ft)
Recommended
Turns To Tighten
(After Finger
Tightening)
(Flats) (Turn)
3/16
1/4
5/16
3/8
1/2
5/8
3/4
7/8
7/16
9/16
5/8
11/16
7/8
1
1-1/4
1-3/8
8 6
12 9
16 12
24 18
46 34
62 46
102 75
122 90
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
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