MacDon FlexDraper FD1 Series, Руководство оператора, Страница: 373 / 510

MAINTENANCE AND SERVICING
1. Shut down the combine, and remove the key from
the ignition.
2. Use a feeler gauge to measure the clearance between
the normal guard hold-down (A) and the knife section.
Ensure the clearance is 0.004–0.024 in. (0.1–0.6 mm).
3. To lower the front of the hold-down and decrease
clearance, turn bolt (B) clockwise; to raise the front of
the hold-down and increase clearance, turn bolt (B)
counterclockwise.
NOTE:
For larger adjustments, it may be necessary to
loosen nuts (C), turn adjuster bolt (B), and then
retighten nuts.
Figure 5.94: Normal Guard Hold-Down
4. Use a feeler gauge to measure the clearance between
the center guard hold-down (A) and the knife section.
Ensure the clearance is between the following
measurements:
•
At guide tip (B):
0.004–0.016 in. (0.1–0.4 mm)
•
At rear of guide (C):
0.004–0.040 in. (0.1–1.0 mm)
5. Adjust the clearance as follows:
a. Tighten nuts (D) until they are fi nger tight.
b. Turn the three adjuster bolts (E) clockwise to
raise the front of the hold-down and increase
clearance, or counterclockwise to lower the front
of the hold-down and decrease clearance.
c. Torque the nuts (D) to 53 ft·lbf (72 N·m) after all
the adjustments are complete and the speci fi ed
clearances are achieved.
Figure 5.95: Center Guard Hold-Down
WARNING
Check to be sure all bystanders have cleared the area.
6. Complete the hold-down adjustments, run the header
at low engine speed, and listen for noise caused by
insuf
fi cient clearance.
NOTE:
Insuf fi cient hold-down clearance will result in
overheating of the knife and guards—readjust
as necessary.
Adjusting Hold-Downs with Stub Guards
WARNING
To avoid bodily injury or death from unexpected startup of machine, always stop engine and remove key
before making adjustments to machine.
147831
355
Revision A