Great Plains HD Series Operator Manual - Manual (Page 8)

8
Adjusting wing fold height –
As pins wear and settle in, wings may droop a bit and need adjustment to make the wings slide
up the ramp to the wing support crossmember. This is adjusted by turning the stop screw on the
lift cylinder as shown. (All FF model 12 bar harrows smaller than 43 ½ ft. use figure A)(HD 12
& 16 bar harrows up to 43 ½ ft. wide use a bolt stop as in figure C.)(All harrows 45 ft. and up
use a shim stop as in figure D & E. Shims are added to raise the wing.) The stop screw should be
adjusted so the wing engages about ½ ” below the top of the ramp as shown in figure B. Silicone
sealer should be spread across the threads to prevent the stop screw from moving. NOTE:
Harrows smaller than 30 ft. do not use wing adjustment or wing support crossmember.
Figure C
Figure B Figure A
Figure D
Figure E