MacDon 872 Combine Adapter - Manual (Page 28)

28
TROUBLESHOOTING
SYMPTOM PROBLEM SOLUTION REF.
FEEDING (continued)
Adapter drum wraps crop. Crop susceptible to wrapping.
E.g. flax Adjust drum tine pitch to decrease
aggressiveness
24
Adapter drum speed too fast
with respect to combine feed
drum. Adjust adapter needle valve slightly
(1/16 turn) to slow feed draper & drum. 14
Crop backs up or
hesitates on feed draper. Feed draper/drum speed too
fast. Reduce feed draper/drum speed. 14
Feed chain drum too low. Move drum to corn position. **
Heavy crop plugging between
adapter drum & feed draper 962 Header: Raise drum. Check
clearance to header before operating. *
Relief pressure too low. Increase relief pressure to
recommended setting. 23
See also” Adapter drum back-
feeds”, pg. 27
Crop back feeds on center
feed draper Excessive clearance from
combine feed drum to adapter
feed draper. Add feeder chain links to achieve less
clearance between combine feed drum
and adapter feed draper. To prevent
damage, ensure a 1-2” (25-50 mm)
clearance between combine drum and
adapter drum. (Combine drum floated
up). **
Feed draper/drum speed too
fast with respect to combine
feed drum Adjust adapter needle valve slightly
(1/16 turn) to slow feed draper and
drum. 14
Side drapers back-feed. Side drapers running too slow in
heavy crop. Increase draper speed. 14
Adapter drum tines too close to
header side drapers. Remove tines at ends of drum to
maintain 2” (50 mm) gap to draper. 24
Side drapers improperly set with
respect to feed draper. Center side draper drive rollers over
feed draper side deflectors. 31
Crop is thrown across
opening and under
opposite side draper. Side drapers running too fast in
light crop. Reduce draper speed. 14
Excessive overlap of feeder
draper. Center side draper drive rollers over
feed draper side deflectors. 31
Hesitation in crop flow at
sides of feeder house. Rear deflector fins set too wide. Set fins approximately 1/2" (13 mm)
inside feeder house opening. Ensure
clearance to feed draper connector slat. 31
FLOTATION
Combine feeder housing
pushes dirt when trying to
pick up down crop. Feeder housing lowered too far,
eliminating header float. Raise feeder housing until float linkage
bottoms, change header to steeper
angle to pick up down crop. 16
Float too light, header legs do
not rest on stops. Adjust to heavier float. 15
Cutterbar does not float or
pushes dirt. Float set too heavy. Adjust to lighter float. 15
Float lockout not disengaged. Raise header, disengage float lockout. 7
Excessive vibration of
adapter and header. Feed pan clearance to cutterbar
is incorrect. Adjust feed pan clearance. 9
* - See your Combine Adapter Dealer. ** - See your Combine Operator’s Manual.