MacDon 873 Combine Adapter - Manual (Page 47)

Form # 147069 Issue 09/06 45
ASSEMBLY
Preparing the Adapter (cont’d.)
POSITION THE RETRACTING TINE DRUM
Adapters are shipped with drum mounted in the proper fore-aft
range (R) or (F) for your make and model of combine, As well,
the proper fore-aft position is factory set at dimension (X)
(reference only) shown in chart below (except for JD Contour
Master). This is measured from the front side of the panel that
mates with the feeder house face plate to the center of the
drum. This position ensures clearance to the combine feeder
house.
IMPORTANT: For best performance, when adapter is attached to
combine, ensure that clearance between adapter drum and
combine feed drum ranges from 1 to 2 inches (25 to 50
mm), with combine feed drum floated up. Rotate adapter
drum rearward if required to achieve this dimension. After
rotating drum, if Dimension X > 8.5” then locate RTD in
holes (F). If Dimension X < 8.5” then locate RTD in holes
(R).
NOTE: Feeding problems may occur if RTD is rotated
forward of the dimensions shown in chart for your
combine due to the plastic closure panels not fitting
properly.
For 972 Headers: If lower float spring pins are moved
to upper position as described on page 40, relocate
RTD to position (N).
For JD Contour Master rotate drum forward so X =
10.6” (270 mm) to clear welded dust shields. Do not
tighten bolt (M) until combine is attached to adapter.
Adjust float handle to limit float as described on the next
page. See Adapter Mounting Instruction for John Deere
combines at the back of this book for other modifications
required for Contour Master Combines.
To adjust drum fore-aft position, loosen two
mounting bolts (M) each side and swing drum fore-aft
in rear slot. Tighten bolts to secure the position
and remove bolt from hole listed in chart. Place
bolt in new hole after adjusting drum.
*NOTE*: For all combines, removable dust shields
must be removed before operating. For other
combines, dust shields may remain installed with
factory fore-aft setting of the retracting tine drum.
However, if feeding problems are encountered,
remove dust shields and move drum closer to
combine feed drum.
* - Dust shields must be removed from all combines where possible, except John Deere Contour Master.
Poly Hole Combine Make & Model Fore-Aft Range Dimension X
(factory settings)
C 3 Case 60 Series R 8.1” (205 mm)*
B 3 Case 77 & 80 Series R 8.1” (205 mm)*
B 2 CNH AFX R 8.5” (215 mm)*
A 1 New Holland CX with dust shields F 8.9” (225 mm)
B 1 New Holland CR 970, 980 with dust shields F 8.9” (225 mm)
B 3 New Holland CR 970, 980 w/o dust shields R 8.1” (205 mm)
C 1 New Holland CR 920, 940, 960 with dust shields F 8.9” (225 mm)
C 3 New Holland CR 920, 940 & 960 w/o dust shields R 8.1” (205 mm)
A 2 New Holland CX w/o dust shields R 8.1” (205 mm)**
B 2 Lexion 450, 460R, 470, 470R, 475, 560, 560R, 570R, 575R, 580, 580R R 8.3” (210 mm)*
A 2 Lexion 460, 465, 480, 480R, 485, 485R & 590R R 8.3” (210 mm)*
A 3 John Deere (except Contour Master) F 9.5” (240 mm)*
A 3 John Deere Contour Master F 10.6” (270 mm)
A 2 John Deere (w/o dust shields) R 8.1” (205 mm)**
C 2 Gleaner R 7.5” (190 mm)*
A 2 Challenger 670, Massey Ferguson 9790 R 7.5” (190 mm)*
B 3 Challenger 660, Massey Ferguson 9690 R 7.5” (190 mm)*
N
RTD FORE-AFT RANGES
R
F
POLY HOLE POSITIONS – R/H SHOWN
RTD POSITIONING
M
1” to 2”
(25 to 50 mm)
DUST SHIELDS
(SEE *NOTE*)
DRUM
FLOATED UP
X
FLIGHTING O.D.