214323 82 Revision A
Adjusting Feed Draper Speed
The feed draper moves the cut crop from the side drapers into the adapter feed auger.
Figure 3.87: CA25 Combine Adapter
The adapter feed draper (A) is driven by a hydraulic motor
and a pump that is powered by the combine feeder house
drive through a gearbox on the adapter.
The feed draper speed is determined by the combine feeder
house speed and cannot be independently adjusted.
3.7.8 Knife Speed
The header knife drive is powered by the adapter hydraulic pump which is driven by the combine feeder house.
There is no separate adjustment to control the knife speed.
Table 3.9 Feeder House Speed
Combine
Feeder House Speed
(rpm)
Case IH
580
Challenger
625
CLAAS
37
420
Gleaner
625
John Deere 490
Massey Ferguson 625
New Holland
580
IMPORTANT:
For variable speed feeder houses, the rpm values shown
at right represent the MINIMUM feeder house speeds.
Reduce the flow to the knife drive motor if operating
above these rpm values to prevent knife overspeeding
and knife failure.
OPERATION
37. The rear shaft speed on CLAAS combines is 420 (speed shown on cab display monitor also will be 420). The
output shaft speed is actually 750 rpm.
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