MacDon 872 Combine Adapter - Manual (Page 27)

27
TROUBLESHOOTING
SYMPTOM PROBLEM SOLUTION REF.
HYDRAULICS
Insufficient draper
speed. Speed control set too low. Increase control setting. 14
Relief pressure too low. Increase relief pressure to
recommended setting. 23
Combine header drive too slow Adjust to correct speed for combine
model *
FEEDING
Adapter drum back-
feeds. JD, Case, NH & Cat: Dust shield on
front of feeder house. Remove dust shield *
Drum tine pitch too aggressive, not
releasing crop. Decrease tine pitch aggressiveness at
cam plate. 24
Side drapers running too fast, piling
material in center of feeder draper. Reduce header side draper speed. 14
Adapter drum too far from front drum
of feeder house. Swing drum back or move feeder house
drum forward. (Check clearance with
feeder house drum fully floated.) 24
**
Build-up of material at corners of
feeder house. Adjust feeder deck rear deflectors to
eliminate corners. 31
Improper header delivery opening. Cut or add to header side drapers for
proper opening. 31
JD & Gleaner: Feeder chain running
too slow. Run feeder chain at high speed. *
John Deere: Equipped with feeder
chain with 4 pitches per bar. Replace with 6 pitch per bar feeder
chain, or remove every other bar. *
Case, NH: Feeder house face plate
set too steep. Adjust feeder house face plate. *
Case: Stone retarding drum installed,
or smooth feeder chain bars installed. Install standard drum or fill slots in
stone retarding drum, or install serrated
feed chain bars. ****
NH-TR, Cat: Stone ejection roll set
too low. Adjust roll position. *
Adapter 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
Hesitation in flow of
bulky crop. Header angle too flat. Steepen header angle. 16
Reel too far back. Move reel forward on support arms. ***
Header opening too small. Bulky crop
is “bridging” across opening. Widen header opening and install outer
tines in drum. 17
Case: Stone retarder blocks
interfering with crop flow. Adjust blocks to minimum height. **
Side drapers running too fast, piling
material in center of feeder draper. Reduce header side draper speed. 14
Feed chain drum too low. Move drum to corn position. **
* See “Preparing the Combine” under Mounting Instruction for your Combine Manual at back of this book
** See your Combine Manual / *** See your Header Operator's Manual / **** See your Combine Dealer