56
Tube
Size
OD
(in.)
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/
1/2
5/8
3/4
7/8
7/16
9/16
5/8
/ 6
7/8
1
1-1/4
1-3/8
8
6
12
9
16
12
24
46
34
62
46
102
75
122
90
1
1/6
1
1/6
1
1/6
/6
1
1/6
1
1/6
3/4
1/8
3/4
1/8
7.3 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
tighten- ing.
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 reass
