OPERATION
Adjusting Feed Draper Speed
The feed draper moves the cut crop from the side drapers into the adapter feed auger.
The adapter feed draper (A) is driven by a hydraulic motor
from a pump which is powered by the combine feeder
house drive through a gearbox on the adapter.
The feed draper speed is fixed to the combine feeder house
speed and cannot be independently adjusted.
Figure 3.6
0: CA25 Combine Adapter
3.7.7 Knif
e Speed
The header knife drive is driven by the adapter hydraulic pump which is driven by the combine feeder house. There
is no separate adjustment to control the knife speed.
IMPORTAN T:
For variable speed feeder houses, the values in the table
are the MINIMUM feeder house speeds. Reduce the flow
to the knife drive motor if operating a bove these values
to prevent over-speeding the knife and knife failure.
Table 3.6 Feeder House Speed
Combine
Feeder House Speed
(rpm)
John Dee
re
490
Case IH
575
Gleaner
624
Massey Ferguson 624
Challenger
624
New Holland
575
Lexi
on
9
420
9. 420 is the rear shaft speed on Lexion combines (speed shown on cab monitor will also be 420). The output
shaft speed is actually 750 rpm.
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Revision A
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