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169441
261
Revision D
6.4
Header and Drapers
Use the following tables to determine the header and draper problems and the recommended solutions.
Problem
Solution
Refer to
Symptom: Insufficient Header Lift
Low relief pressure
Increase relief pressure
See your MacDon Dealer
Symptom: Insufficient Draper Speed
Speed control set too low
Increase control setting
Relief pressure too low
Increase relief pressure to
recommended setting
See your MacDon Dealer
Windrower header drive too slow
Adjust to correct speed for windrower
model
Refer to windrower operator
’
s manual
Worn out gear pump
Replace gear pump
See your MacDon Dealer
Pressure compensator (V7) set
too low
Adjust to increase setting
Refer to windrower operator
’
s manual
Symptom: Draper Will Not Move
Drapers are loose
Tighten drapers
4.9.1 Adjusting Draper Tension, page
181
Drive or idler roller wrapped with
material
Loosen draper and clean rollers
4.9.1 Adjusting Draper Tension, page
181
Slat or connector bar jammed by
frame or material
Loosen draper and clear obstruction
4.9.1 Adjusting Draper Tension, page
181
Roller bearing seized
Replace roller bearing
4.9.7 Draper Roller Maintenance, page
189
Low hydraulic oil
Fill windrower reservoir to full level
See your MacDon Dealer
Incorrect relief setting at flow
control valve
Adjust relief setting
See your MacDon Dealer
Symptom: Draper Stalling
Material not feeding evenly off knife
Lower reel
Material not feeding evenly off knife
Install stub guards
•
5.2.3 Stub Guard Conversion Kit,
page 248
•
•
See your MacDon Dealer
Symptom: Hesitation in Flow of Bulky Crop
Header angle too low
Increase header angle
Controlling Header Angle, page 49
Material overload on drapers
Increase side draper speed
Material overload on drapers
Install upper cross auger
5.4.8 Upper Cross Auger, page 253
Material overload on drapers
Add flighting extensions
See your MacDon Dealer
Symptom: Drapers Back Feed
Drapers running too slow in
heavy crop
Increase draper speed
Symptom: Crop is Thrown Across Opening and under Opposite Side Draper
Drapers running too fast in light crop
Reduce draper speed
Symptom: Material Accumulates inside or under Front Edge of Draper
Deck height improperly adjusted
Adjust deck height
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