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The differential lock may only be used on the
¿
eld.
It must not be used in speed range III.
The differential lock considerably improves combine manoeuvrability in soft soil or on slippery
ground and steep slopes. It must, however, never be used when not necessary.
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. The lock makes the front wheels
rotate at the same speed, which means that the steering rear wheels cannot change the direction of the combine
very ef
¿
ciently.
The steering brakes do not work, either
.
Sharp turns of the steering wheel put unnecessary strain on the transmission. To lessen this strain, disengage the
differential lock before turning.
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To disengage the lock, step on both the steering brakes in turn or turn the steering wheel back and forth. This may
be necessary when the tractive wheels grip unevenly, or when the driver has attempted to turn the combine, which
has strained the lock.
After having disengaged the lock, make sure it really is off.
The control light is off and steering and steering
brakes are working.
Before driving on the road, make sure the lock is disengaged.
The lock is operated by hydraulic pressure obtained from the lifting cylinder on the cutting table. A valve guides
the pressure either to push the lock on or keep if disengaged. Therefore there shall always be pressure in the cut-
ting table lifting line.
Note!
When driving with the cutting table disengaged, the crop elevator shall be in its top position so
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the table lifting line and the pressure accumulator.
These measures are necessary to prevent the minor over-pressure in the hydraulic return line from engaging the
lock. These measures guarantee safe operations in every circumstance.
Summary of Contents for Comia c4
Page 2: ......
Page 16: ... 14 ...
Page 126: ... 124 C8 C8 C8 LUBRICATION DIAGRAM ...
Page 134: ... 132 M3 ...
Page 136: ... 134 M6 ...
Page 137: ... 135 M7 ...