Instruction Manual

MAINTENANCE AND SERVICING
Adjusting Hold-Downs with Pointed Guards
To adjust the clearance between hold-downs and knife on
header with pointed guards, follow these steps:
1. Check the clearan ce (A) between the no rm a l
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:
For larger ad
justments, it may be necessary to loosen
nuts (C), tu
rn adju ster bolt (B), then retighten nuts (C).
Figure 6.45: 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 of guide (C)
4. If required, adjust clearances as follows:
a. Torquenuts(D)to35ft·lbf(46N·m).
b. Turn the three adjuster bolts (E) as required.
c. Torquenuts(D)to53ft·lbf(72N·m).
5. After adjusting all hold-downs, run header at a low
engine speed a nd listen for noise due to insufficient
clearance. Insufficient clearance will also result
in overheating of the knife and guards. Readjust
as necessary.
Figure 6.46: Hold-Down Clearance
169899 150 Revision A