MAC215986
334
Revision A
4.8.4
Installing Knifehead Bearing
The knifehead bearing allows the knifehead pin to rotate within the knifehead as the drive arm strokes the knife back
and forth. Once the old bearing has been removed from the knifehead, a new one can be installed.
1003865
A
B
C
D
E
Figure 4.118: Knifehead Bearing Assembly
1.
Place O-ring (E) and plug (D) into the knifehead.
2.
Use a flat-ended tool (A) with the same approximate
diameter as bearing (C), and push the bearing into the
knifehead until the top of the bearing is flush with the step
in the knifehead.
IMPORTANT:
Install the bearing with the stamped end (the end with the
identification markings) facing up.
3.
Install seal (B) into the knifehead with the lip facing
outwards.
IMPORTANT:
To prevent premature knifehead or knife drive box failure,
ensure there is a tight fit between the knifehead pin and
the needle bearing, and between the knifehead pin and the
output arm.
4.
Install the knife. For instructions, refer to
4.8.5 Installing Knife, page 334
.
4.8.5
Installing Knife
Inspect the knife daily and ensure it is not damaged. If it is damaged it will need to be removed and 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
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.
Shut down the engine, and remove the key from the ignition.
2.
Open the endshield. For instructions, refer to
