MacDon FlexDraper FD130 - Page 590

214683 566 Revision A
Problem
Solution Refer to
Knife is not operating at
recommended speed
Check engine speed of combine or
header knife speed
• Refer to combine operator’s
manual
• Checking Knife Speed, page 95
Symptom: Excessive header vibration
Knife hold-downs not adjusted
properly
Adjust hold-downs
• Adjusting Hold-Downs with
Pointed Guards, page 448
• Adjusting Hold-Downs with
Stub Guards, page 451
Knife not operating at recommended
speed
Check engine speed of combine Refer to combine operator’s manual
Excessive knife wear Replace knife
• 5.8.2 Removing Knife, page 438
• 5.8.5 Installing Knife, page 440
Loose or worn knifehead pin or drive
arm
Tighten or replace parts
5.8.1 Replacing Knife Section, page
437
Symptom: Excessive vibration of float module and header
Incorrect knife speed Adjust knife speed Checking Knife Speed, page 95
Driveline U-joints worn Replace U-joints
See your MacDon Dealer
Bent cutterbar
Straighten cutterbar See your MacDon Dealer
Symptom: Excessive breakage of knife sections or guards
Knife hold-downs not adjusted
properly
Adjust hold-downs
• Adjusting Hold-Downs with
Pointed Guards, page 448
• Adjusting Hold-Downs with
Stub Guards, page 451
Cutterbar operating too low in stony
conditions
Raise cutterbar using skid shoes
3.7.2 Cutting on the Ground, page
62
Float is set too heavy
Adjust float springs for lighter float
3.7.3 Header Float, page 64
Bent or broken guard
Straighten or replace guard 5.8.7 Knife Guards, page 441
Header angle too steep Flatten header angle 3.7.5 Header Angle, page 81
Symptom: Knife back breakage
Bent or broken guard
Straighten or replace guard 5.8.7 Knife Guards, page 441
Worn knifehead pin Replace knifehead pin
• 5.8.3 Removing Knifehead
Bearing, page 439
• 5.8.4 Installing Knifehead
Bearing, page 440
Dull knife Replace knife
• 5.8.2 Removing Knife, page 438
• 5.8.5 Installing Knife, page 440
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