MacDon A40-D, Operator'S Manual

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Revision A
4.7.5 Installing Knifehead Bearing
Figure 4.20: Knifehead Bearing Assembly
1. Place O-ring (E) and plug (D) into knifehead.
IMPORTANT:
Install the bearing with the stamped end (the end with
the identification markings) facing up.
NOTE:
It may be necessary to temporarily remove the grease
fitting from the knifehead during installation of the
knifehead pin. This will allow any trapped air to escape
and knifehead pin will seat correctly.
2. Use a flat-ended tool 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.
3. Install seal (B) into knifehead with the lip facing
outwards.
IMPORTANT:
To prevent premature knifehead or knife drive box
failure, ensure there
’
s a tight fit between knifehead
pin (A) and the needle bearing, and also between the
knifehead pin and the output arm.
4. Install the knife. Refer to 4.7.3 Installing Knife, page 118 .
4.7.6 Removing Spare Knife from Storage
Figure 4.21: Spare Knife Location
–
Double Knife
For double-knife headers, a spare knife with knifehead may
be stored inside the lean bar (A):
•
The left knife is stored at the left end of the lean bar
•
The right knife is stored at the right end of the lean bar
MAINTENANCE AND SERVICING