Tightening flare type tube fittings, Tightening o-ring fittings – Wheatheart R Series Augers User Manual
Page 43
W
HEATHEART
- R S
ERIES
A
UGERS
9. A
PPENDIX
R8-36, R8-41, R8-46, R8-51, R10-36, R10-41, & R10-51
9.3. T
IGHTENING
F
LARE
T
YPE
T
UBE
F
ITTINGS
30758 R1
43
9.3. 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 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.
9.4. TIGHTENING O-RING FITTINGS
1. Inspect o-ring and seat for dirt or obvious defects.
Table 9.3 Metric Bolt Torque
BOLT DIAMETER
(Nm)
(lb-ft)
(Nm)
(lb-ft)
M3
0.5
0.4
1.8
1.3
M4
3
2.2
4.5
3.3
M5
6
4
9
7
M6
10
7
15
11
M8
25
18
35
26
M10
50
37
70
52
M12
90
66
125
92
M14
140
103
200
148
M16
225
166
310
229
M20
435
321
610
450
M24
750
553
1050
774
M30
1495
1103
2100
1550
M36
2600
1917
3675
2710
Table 9.4 Flare Type Tube Fittings
Tube Size OD
(in.)
Nut Size
Across Flats
(in.)
Torque
Values(N-m)
a
Torque Values
(lb-ft)
a
# of Turns to
Tighten (Flats)
(After Finger
Tightening)
(Turn)
3/16
7/16
8
6
1
1/6
1/4
9/16
12
9
1
1/6
5/16
5/8
16
12
1
1/6
3/8
11/16
24
18
1
1/6
1/2
7/8
46
34
1
1/6
5/8
1
62
46
1
1/6
3/4
1 1/4
102
75
3/4
1
7/8
1 3/8
122
90
3/4
1
a. * The torque values shown are based on lubricated connections as in reassemble.