Knifehead Shield; Installing Knifehead Shield - MacDon D65 Operator's Manual

Adjusting Hold-Downs with Stub Guards
To adjust the clearance between hold-downs and knife for
all stub guards, follow these steps:
1. Check the clearances between the center guard
hold-down (A) and knife section with a feeler gauge.
The clearances should be:
• 0.004–0.016 in. (0.1–0.4 mm) at guide tip (B)
• 0.004–0.040 in. (0.1–1.0 mm) at rear of guide (C)
2. If required, adjust clearances as follows:
a. Torque nuts (D) to 35 ft·lbf (46 N·m).
b. Turn the three adjuster bolts (E) as required.
c. Torque nuts (D) to 53 ft·lbf (72 N·m).
3. After adjusting all hold-downs, run header at a low
engine speed and listen for noise due to insufficient
clearance. Insufficient clearance will also result
in overheating of the knife and guards.
as necessary.

5.5.8 Knifehead Shield

The shield attaches to the endsheet and reduces the knifehead opening to prevent cut crop from accumulating in
the knifehead cut-out, especially in severely lodged crops.
The shield(s) and mounting hardware are available from your MacDon Dealer.
IMPORTANT:
Shields should be removed when cutting with the cutterbar on the ground in muddy conditions. Mud may pack
into the cavity behind the shield and cause knife drive box failures.

Installing Knifehead Shield

The knifehead shield is supplied in flattened form and can be bent to suit installation on pointed or stub guard
cutterbars and on double-knife headers. Shields are slightly different depending on header size and guard
configuration. Ensure proper shield is used. Refer to the header parts catalog for proper replacement parts.
DANGER
To avoid bodily injury or death from unexpected start-up or fall of raised machine, always stop engine,
remove key, and engage safety props before going under header for any reason.
1. Raise reel fully, lower header to ground, shut down windrower, and remove key.
2. Engage reel arm locks.
CAUTION
Wear heavy gloves when working around or handling knives.
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MAINTENANCE AND SERVICING
Figure 5.35: Stub Guards
Readjust
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Revision A