Owner's manual

WHEATHEART - R SERIES AUGERS 9. APPENDIX
R8-36, R8-41, R8-46, R8-51, R10-36, R10-41, & R10-51 9.3. TIGHTENING FLARE TYPE TUBE FITTINGS
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.