Torque specifications – MacDon 4000 Mower Conditioner User Manual
Page 12
12
TORQUE SPECIFICATIONS
TIGHTENING HYDRAULIC O-RING FITTINGS*
1.
Inspect O-ring and seat for dirt or obvious
defects.
2.
On 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 angle fittings to torque shown while
holding body of fitting with a wrench.
*
The torque values shown are based on
lubricated connections as in reassembly
.
SEALED BEARING INSTALLATION
1. Clean shaft and coat with rust preventative.
2. Install flangette, bearing, flangette and lock
collar. The locking cam is only on one side of
the bearing.
3. Install (but do not tighten) the flangette bolts.
4. When the shaft is located correctly, lock the
lock collar with a punch. The collar should be
locked in the same direction the shaft rotates.
Tighten the setscrew in the collar.
5. Tighten the flangette bolts.
6. Loosen the flangette bolts on the mating
bearing one turn and re-tighten. This will allow
the bearing to line up.
Torque Value*
Recommended
Turns to Tighten
(after finger
tightening)
Thread
Size
(in.)
Nut Size
Across
Flats
(in.)
N·m
[lb-ft]
Flats
Turns
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
1-7/8
2-1/8
217
[160]
1/2
1/12
TIGHTEN COLLAR IN DIRECTION
SHAFT ROTATES