MAINTENANCE AN D SERVICING
Adjusting Hold-Downs with Pointed Guards
To adjust the clearance betwee n hold-downs and knife on
header with pointed guards, follow these steps:
1. Check the clearance (A) between the normal
hold-down and knife section with a feeler gauge. The
clearance should be 0.004–0.024 in. (0.1–0.6 mm).
2. Adjust as required by turning bolt (B).
NOTE:
Forlargerad
justments, it may be necessary to
loosen nuts
(C), turn adjuster bolt (B), then retighten
nuts (C).
Figure 5.100: Hold-Down Clearance
3. 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 o f guide (C)
4. 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).
5. 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. Readjust
as necessary.
Figure 5.101: Hold-Down Clearance
147695 309 Revision A
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