215184
266
Revision A
8.7
Checking Knife Hold-Downs
Perform daily inspections to ensure the knife hold-downs are preventing the knife sections from lifting off the guards while
permitting the knife to slide without binding. Use a feeler gauge to measure the clearance between the hold-downs and
knife sections, and refer to the following for adjustment procedures:
•
8.7.1 Adjusting Hold-Downs with Pointed Guards, page 266
•
8.7.2 Adjusting Hold-Down with Stub Guards, page 267
8.7.1
Adjusting Hold-Downs with Pointed Guards
WARNING
To avoid bodily injury or death from unexpected startup of machine, always stop engine and remove key before
adjusting machine.
1.
Shut down the engine, and remove the key from the ignition.
1009509
A
B
C
Figure 8.13: Standard Guard Hold-Down
2.
Use a feeler gauge to measure the clearance between the
standard guard hold-down (A) and the knife section. Ensure
the clearance is 0.1
–
0.6 mm (0.004
–
0.024 in.).
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.
1009510
A
B
C
D
E
Figure 8.14: Center 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 hold-down tip (B):
0.1
–
0.4 mm (0.004
–
0.016 in.)
•
At rear of hold-down (C):
0.1
–
1.0 mm (0.004
–
0.040 in.)
5.
Adjust the clearance as follows:
a.
Tighten nuts (D) until finger tight.
b.
Turn 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.
When all the adjustments are complete and the
specified clearances are achieved, torque nuts (D) to
88 Nm (65 lbf
∙
ft).
WARNING
Check to be sure all bystanders have cleared the area.