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214778
53
Revision A
5.4
Checking and Adjusting Knife Drive Belt Tension
Proceed to the section that applies to the header
’
s knife drive configuration:
•
5.4.1 Checking and Tensioning, page 53
•
5.4.2 Tensioning Timed Knife Drive Belts, page 54
•
5.4.3 Tensioning Timed Knife Drive V-Belts, page 56
Single-knife headers have one knife-drive belt and double-knife headers have two knife-drive belts.
5.4.1
Checking and Tensioning
WARNING
To avoid bodily injury or death from unexpected startup of machine, always stop engine and remove key before making
adjustments to machine.
IMPORTANT:
To prolong the belt and drive life, do
NOT
overtighten the belt.
1.
Open the left endshield.
1022180
A
B
C
Figure 5.5: Knife Drive
NOTE:
Belt guide removed for illustration purposes.
2.
Loosen the two bolts (A) securing the motor assembly to
the header endsheet.
3.
Check drive belt tension. A properly tensioned drive belt (C)
should deflect 24
–
28 mm (15/16
–
1-1/8 in.) when 133 N
(30 lbf) of force is applied at the midspan. If the belt needs
to be tensioned, turn the adjuster bolt (B) clockwise to
move the drive motor until proper tension is set.
1002468
A
B
C
Figure 5.6: Knife Drive
4.
Ensure the clearance between belt (A) and belt guide (B) is
1 mm (1/16 in.).
5.
Loosen the three bolts (C), and adjust the position of
guide (B) as required.
6.
Tighten the three bolts (C).
7.
Close the endshield.
8.
Double-knife headers only:
Repeat procedure on the other
side of the header.
Содержание D1X Series
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