MacDon FlexDraper FD1 Series, Operator'S Manual, Page: 366 / 510

MAINTENANCE AND SERVICING
1. Shut down the combine, and remove the key from
the ignition.
2. Remove the knife. Refer to
5.8.2 Removing Knife,
page 347
.
NOTE:
Because the bearing is being replaced, it is
not necessary to wrap the knifehead to protect
the bearing.
3. Use a fl at-ended tool with the same approximate
diameter as the pin (A). Tap the 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.
Figure 5.79: Knifehead Bearing Assembly
5.8.4 Installing Knifehead Bearing
1. Place O-ring (E) and plug (D) into knifehead.
IMPORTANT:
Install the bearing with the stamped end (the end
with the identi
fi cation markings) facing up.
2. Use a fl at-ended tool (A) with the same approximate
diameter as the bearing (C), and push the bearing into
the knifehead until the top of the bearing is
fl ush 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
fi t between the
knifehead pin and the needle bearing, and also
between the knifehead pin and the output arm.
4. Install the knife. Refer to
5.8.5 Installing Knife, page
348
.
Figure 5.80: Knifehead Bearing Assembly
5.8.5 Installing Knife
WARNING
Stand to rear of knife during installation to reduce risk of injury from cutting edges. Wear heavy gloves
when handling knife.
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Revision A