CropHawk Draper Platform Operators Manual 85
Trouble Shooting
Symptom
Problem
Solution
Reference
KNIFE/ CUTTERBAR SYMPTOMS
Excessive knife vibration
Incorrect knife timing.
Bent or damaged knife guards.
Knife head nylon bush worn.
Knife head bearing worn.
Feeder house drive speed too fast
Re-time knife.
Replace knife guards as required.
Replace nylon bush.
Replace knife head bearing.
Check speed and refer to combine operators
manual
Uneven or poor cutting of crop.
Knife sections dull or damaged
Knife guards worn
Knife/cutterbar plugged with excess
material.
Knife drive clutch slipping.
Ground speed to fast.
Knife gearing incorrect.
Check and replace as necessary
Replace knife guards as required.
Adjust reel positioning to suit conditions.
Increase torque on knife clutch or replace glazed
friction discs.
Decrease ground speed.
Contact MidWest Dealer.
Knife stalling or excessive knife drive
loads.
Knife drive clutch slipping.
Knife drive clutch friction discs worn
or damaged.
Dull knife sections.
Dull knife guard edges
Binding between top of knife sec-
tions and top of guard slots.
Reel to far forward.
Knife hold down clamps worn.
Incorrect knife hold down shims.
Ground speed to fast for crop condi-
tions.
Adjust knife drive clutch torque setting.
Replace knife drive clutch friction discs .
Replace knife sections as required.
Replace knife guards
Inspect for bent guards, bent cutterbar, or im-
proper position of guards.
Bring reel setting back towards combine.
Replace knife hold down clamps.
Replace knife hold clamp shims to correct
type.
Decrease ground speed to suit crop conditions.
Shattering of grain ahead of knife/
cutterbar
Reel speed too fast or slow.
Reel too low.
Ground speed too fast.
Crop over ripe.
Adjust reel speed to match groundspeed
Raise reel.
Decrease ground speed.
Fit crop extensions.
Loss of crop head at cutterbar or cut
crop building up and falling from front
of cutterbar
Outer draper belt speed to fast.
Reel not adjusted low enough for
delivery of cut crop to belts.
Reel too far forward.
Reel speed too fast or slow.
Cutting crop material to high.
Ground speed too fast.
Decrease outer draper belt speed.
Set reel low enough to sweep material from
cutterbar.
Move reel closer to cutterbar.
Adjust reel speed to match groundspeed.
Lower cut height.
Decrease ground speed.