RD 12/RD 12A Drive System
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5.1 Checking the Tow Valve
Background In order for the machine to operate properly, the tow valve must be completely closed.
Procedure Follow the procedure below to open and close the tow valve.
1. Turn the shaft of the valve (a) counterclockwise 90° to open the tow valve.
2. Turn the shaft of the tow valve fully clockwise to close the tow valve.
The tow valve has now been checked.
WARNING! With the tow valve open, the drive circuit has no braking action and the
machine will roll freely.
f Close the tow valve immediately after a towing operation is complete to prevent the
machine from rolling unexpectedly.
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