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3. Loosen the two bolts (A) securing the motor assembly
to the header endsheet.
4. Turn the adjuster bolt (B) clockwise to move the drive
motor until a force of 133 N (30 lbf) de
fl
ects the belt (C)
24–28 mm (15/16–1-1/8 in.) at the midspan.
Figure 5.75: Left Side Shown – Right Side
Opposite for Double-Knife Headers
5. Ensure the clearance between the belt (A) and the belt
guide (B) is 1 mm (1/16 in.).
6. Loosen the three bolts (C), and adjust the position of
the guide (B) as required.
7. Tighten the three bolts (C).
8. Close the endshield. Refer to
NOTE:
Readjust the tension of a new belt after a short
run-in period (about
fi
ve hours).
9.
Double-knife headers only:
Repeat procedure on the
other side of the header.
Figure 5.76: Knife Drive
Timed Double-Knife Drive Belts
Removing Timed Drive V-Belts
WARNING
To avoid bodily injury or death from unexpected startup of machine, always stop engine and remove key
before making adjustments to machine.
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Revision A