MacDon FlexDraper FD1 Series, Unloading And Assembly Instructions

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6.7 Checking Knife Drive Belt Tension
Figure 6.10: Left Shown
–
Right Opposite for
Double-Knife Headers
1. Open endshield(s).
NOTE:
The knife drive is identical on both sides of the header.
2. Check belt (C) tension by applying 90 N (20 lbf) by hand
to belt at mid-span, and check that belt deflects 18 mm
(3/4 in.). If necessary adjust tension as follows:
a. Loosen two bolts (A) that secure the motor
assembly to header endsheet.
b. Turn adjuster bolt (B) as required (clockwise to
tighten) to achieve specified tension.
IMPORTANT:
To prolong belt and drive life, do NOT over-tighten belt.
Figure 6.11: Knife Drive
3. Ensure that clearance between belt (A) and belt
guide (B) is 1 mm (1/32 in.).
4. If required, loosen three bolts (C), and adjust position of
guide (B).
5. Tighten bolts (C).
6. Close endshield(s).
PERFORMING PREDELIVERY CHECKS