MAC215986
333
Revision A
4.8.3
Removing Knifehead Bearing
The knifehead bearing allows the knifehead pin to rotate within the knifehead as the drive arm strokes the knife back
and forth. If the bearing is worn or damaged, it will need to be replaced.
DANGER
To prevent bodily injury or death from the unexpected start-up of the machine, always stop the engine and remove the
key from the ignition before making adjustments to the machine.
WARNING
To prevent bodily injury from the fall of a raised reel, always engage the reel safety props before going under the
raised reel for any reason.
WARNING
Stand to the rear of the knife during removal to reduce the risk of injury from cutting edges. Wear heavy gloves when
handling the knife.
1.
Raise the reel fully.
2.
Shut down the engine, and remove the key from the ignition.
3.
Engage the reel safety props. For instructions, refer to
Engaging Reel Safety Props, page 33
.
4.
Remove the knife. For instructions, refer to
4.8.2 Removing Knife, page 331
.
NOTE:
Because the bearing is being replaced, it is not necessary to wrap the knifehead to protect the bearing.
1003865
A
B
C
D
E
Figure 4.117: Knifehead Bearing Assembly
5.
Use a flat-ended tool with the same diameter as pin (A).
Tap seal (B), bearing (C), plug (D), and O-ring (E) from the
underside of the knifehead.
NOTE:
Seal (B) can be replaced without removing the bearing.
When changing the seal, check the pin and needle bearing
for wear and replace if necessary.
