MacDon 922 - Manual (Page 27)

Form # 46620 Issue 01/06 25
CHECK TINE CLEARANCE
OPERATION
REEL PICK-UP FINGER PITCH
Another factor in effective feeding of crop into the
sickle and auger is finger pitch angle (the angle the
fingers operate at in relation to the ground).
NOTE: In the illustration at right, pitch angle (A) is
more aggressive than pitch angle (B).
Generally it should not be necessary to adjust the
finger pitch angle, however in certain crop types
and conditions adjustment of the finger pitch may
be required to achieve best results.
The pitch should be just aggressive enough to
provide adequate crop lifting action for proper
cutting.
Pitch angle can be adjusted by rotating the cam.
Rotating the cam forward (higher in the back),
results in a more aggressive pitch angle.
Rotating the cam rearward (higher in the front),
results in a less aggressive pitch angle.
To adjust cam position:
1. Loosen four bolts (C), both ends of reel.
2. Turn bolts (D) at cam end to move cam up or
down at front or rear until desired position is
obtained.
3. Tighten four bolts (C), both ends, to secure
reel position.
4. Rotate reel slowly by hand and check finger
clearance at knife and pan. Flex fingers to
simulate crop-loaded position to ensure
fingertip clearances to knife sections and
auger pan are adequate for working
conditions.
5. If necessary, adjust reel fore-aft position to
achieve proper clearances. See Maintenance/
Service section.
NOTE: For optimum header performance in all
crops, position the reel so that finger tips are as
close as possible to knife sections and auger
pan without interfering. Some contact between
finger tips and knife guards is acceptable.
Rotate tines in direction of crop load, to check
for minimum clearance as tines pass over
guards and pan.
FINGER PITCH ANGLE
FINGER PITCH ADJUSTMENT