Specifications

8. APPENDIX WHEATHEART - SELF-PROPELLED AUGER KIT
8.2. TIGHTENING O-RING FITTINGS WHEATHEART & COMPETITOR MODELS
54 IM3 R2
8.2. TIGHTENING O-RING FITTINGS
1. Inspect o-ring and seat for dirt or obvious defects.
2. On the angle fittings, back the lock nut off until washer bottoms out at top of
groove.
3. Hand-tighten fitting until back up washer or washer face (if straight fitting)
bottoms on face and o-ring is seated.
4. Position angle fittings by unscrewing no more than one turn.
5. Tighten straight fittings to torque shown.
6. Tighten while holding body of fitting with a wrench.
Table 8.2 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 8.3 “O” Ring Fittings
Tube Size
OD (in.)
Nut Size Across
Flats (in.)
Torque
Values
a
(Nm)
Torque
Values
a
(Lb-ft)
# of Turns to
Tighten (Flats)
(After Finger
Tightening) (Turn)
3/8 1/2 8 6 2 1/3
7/16 9/16 12 9 2 1/3
1/2 5/8 16 12 2 1/3
9/16 11/16 24 18 2 1/3
3/4 7/8 46 34 2 1/3
7/8 1 62 46 1-1/2 1/4
1-1/16 1-1/4 102 75 1 1/6
1-3/16 1-3/8 122 90 1 1/6
1-5/16 1-1/2 142 105 3/4 1/8
1-5/8 1-7/8 190 140 3/4 1/8
7/8 2-1/8 217 160 1/2 1/12
a. The torque values shown are based on lubricated connections as in reassemble.