MAC215990
467
Revision A
Troubleshooting
–
Cutting Action and Knife Components (continued)
Problem
Solution
Refer to
Reel too far back
Move the reel forward
3.9.11 Reel Fore-Aft Position, page
144
Symptom: Knife plugging
Reel too high or too far forward
Lower the reel or move reel rearward
•
•
3.9.11 Reel Fore-Aft Position, page
144
Ground speed too high
Decrease the ground speed
Improper knife hold-down adjustment
Adjust the hold-down
or
Dull or broken knife section
Replace knife section
4.8.1 Replacing Knife Section, page
306
Bent or broken guards
Align or replace the guards
Adjusting Knife Guards and Guard Bar,
page 318
Reel fingers not lifting crop properly
ahead of knife
Adjust the reel position/finger pitch
•
3.9.11 Reel Fore-Aft Position, page
144
•
3.9.12 Reel Tine Pitch, page 152
Steel pick-up fingers contacting knife
Increase the reel clearance to
cutterbar or adjust
“
frown
”
•
Float too heavy
Adjust the springs for lighter float
Checking and Adjusting Header Float,
page 121
Mud or dirt build-up on cutterbar
Raise the cutterbar by lowering skid
shoes
3.9.2 Cutting on Ground, page 118
Mud or dirt build-up on cutterbar
Flatten the header angle
Knife is not operating at
recommended speed
Check the engine speed of combine or
header knife speed
•
Combine operator
’
s manual
•
Checking Knife Speed, page 138
Symptom: Excessive header vibration
Knife hold-down not adjusted properly
Adjust hold-down
•
or
Excessive knife wear
Replace knife
•
4.8.2 Removing Knife, page 307
•
4.8.5 Installing Knife, page 310
Loose or worn knifehead pin or
drive arm
Tighten or replace parts
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