MacDon CA25 OM - Manual (Page 189)

SECTION 9. TROUBLESHOOTING
* See your MacDon Dealer
** Refer to your Combine Operator’s Manual
*** Refer to your Technical Service Manual
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Revision B
(continued next page)
SYMPTOM PROBLEM SOLUTION SECTION
Ragged Or Uneven Cutting
Of Crop (cont’d).
Tangled/tough to cut crop. Install stub guards.
*, 8.9.6
& 8.9.7
&10.2
Reel too far back. Move reel forward. 7.9.9
Loose sickle drive belt. Adjust drive belt tension. 8.9.8
Sickle Plugging.
Reel too high or too far forward.
Lower reel or move reel
rearward. 7.9.8 &
7.9.9
Ground speed too slow. Increase ground speed. 7.9.5
Loose sickle drive belt. Adjust drive belt tension. 8.9.8
Improper sickle hold-down
adjustment.
Adjust hold-down.
8.9.7
Dull or broken sickle sections. Replace sickle section. 8.9.1
Bent or broken guards. Align or replace guards. 8.9.6
Reel fingers not lifting crop
properly ahead of sickle. Adjust reel position/finger
pitch. 7.9.9 &
7.9.10
Steel pick-up fingers contacting
sickle. Increase reel clearance to
cutterbar, or adjust ‘frown’. 8.12.1 &
8.12.2
Float too heavy.
Adjust springs for lighter
float.
7.9.2
Mud or dirt build-up on
cutterbar.
Raise cutterbar by lowering
skid shoes.
7.9.1.2
Install cut-out sections. *
Flatten header angle. 7.9.3
Sickle is not operating at
recommended speed. Check engine speed of
combine.
*
Excessive Header Vibration.
Sickle hold-downs not adjusted
properly.
Adjust hold-downs. 8.9.7
Sickles on double knife drive
not timed.
Adjust sickle timing. 8.9.9.3
Sickle not operating at
recommended speed. Check engine speed of
combine.
*
Excessive sickle wear. Replace sickle.
8.9.2 &
8.9.4
Loose or worn sickle head pin
or drive arm.
Tighten or replace parts. 8.9.1