MacDon FD70 for Combine Operators - Manual (Page 99)

SECTION 9. OPERATION
Form 169006
97
Revision D
9.11.5 Reel Speed
Reel speed affects feeding of crop into the sickle
and onto the drapers, as well as the smoothness
and evenness of the delivered crop.
Operating the reel too fast or too slow relative to
ground speed will cause bunching.
At the proper speed, the reel discs should appear
to be being driven by the ground.
 If they look like they are skidding relative to
ground, the reel is turning too slow.
 If they look like they are spinning excessively
relative to the ground, reel speed may be too
fast.
In standing crop, reel speed should be just faster
than or equal to ground speed, sweeping crop
across the sickle.
Flattened crop or a crop that is leaning away from
the cutterbar requires a higher reel speed in
relation to ground speed. This can be achieved
by increasing reel speed, decreasing ground
speed, or both.
Excessive shattering of grain heads or crop loss
over the header back tube may be indications
that reel speed is too fast.
Excessive reel speed causes undue wear of reel
components and unnecessary load on reel drive,
resulting in uneven reel motion.
Generally, 9-bat reels can effectively operate at
lower reel speed, while minimizing crop loss in
shatter prone crops.
The reel speed is adjustable with the controls in
the combine cab. Refer to “Reel Speed” section
in your Combine Operator’s Manual for
adjustment details.
9.11.5.1 Optional Reel Drive Sprockets: D60
and FD70 Only
MACHINE
HYDRAULICS
COMBINE APPLICATION
DRIVE
SPROCKET
All All Standard 19 Tooth
2000 - 2100 psi
(13.79 - 14.48
MPa)
Case 2300,
2500 Series.
AGCO
Transverse
Rotary.
Combining
Down Rice
10 Tooth
2500 psi
(17.24 MPa)
CAT 500
Series.
AGCO Axial
Rotary.
12 Tooth
3000 psi
(20.68 MPa)
NH CR, CX.
Case IH
7010, 8010.
14 Tooth
Low Flow
under 11 gpm
---
Combining
Light Crops
Above 10 mph
(16 km/hr)
21 Tooth
Sprockets are available as an option to the
factory installed sprocket. See your MacDon
Dealer Parts Department to order sprockets.
Refer to Section 10.14.7 Reel Drive Sprocket:
D60, FD70 for installation details.