MacDon D1 Series - 8.14 Checking and Adjusting Feed Draper Tension

215184 286 Revision A
8.14 Checking and Adjusting Feed Draper Tension
DANGER
To avoid bodily injury or death from unexpected start-up or fall of a raised machine, always stop engine and remove
key before leaving the operator’s seat, and always engage safety props before going under the machine for any reason.
1. Raise the header fully.
2. Shut down the engine, and remove the key from the ignition.
3. Engage the header safety props.
Checking draper tension:
4. Ensure the draper guide (the rubber track on the underside of the draper) is properly engaged in the groove on the
drive roller, and the idler roller is between the guides.
NOTE:
Illustrations show the left side of the float module. The right side is opposite.
1027548
A
B
Figure 8.46: Feed Draper Tensioner
NOTE:
The default position of spring retainer (A) (white indicator) is
centered (B) in the spring box window; however, the position
of the spring retainer varies with draper tracking adjustment
at the factory.
5. Check the position of white indicator (A). If the feed draper
tracks properly and the spring retainers on both sides of
the draper are correctly positioned, then no adjustment is
necessary.
6. If adjustment is necessary, proceed to Step 7, page 286.
Adjusting draper tension:
1027549
A
B
E
D
C
Figure 8.47: Feed Draper Tensioner
7. Adjust the draper tension by loosening jam nut (A) and
turning bolt (B) clockwise to increase draper tension or
turning bolt (B) counterclockwise to decrease draper
tension. Draper tension can be adjusted as follows:
• Loosened to 3 mm (1/8 in.) (D) (aft of center in
indicator window [E])
• Tightened to 6 mm (1/4 in.) (C) (forward of center in
indicator window [E])
IMPORTANT:
For small tension adjustments, you may need to only adjust
one side of the draper. For larger tension adjustments and
to avoid uneven draper tracking, you may need to adjust
both sides of the draper an equal amount.
8. Tighten jam nut (A).
PERFORMING PREDELIVERY CHECKS