Operator`s manual

OPERATION
335
The retarder is automatically disabled when the ABS
(anti-lock brake system) is active.
The Transmission Retarder is an option with Allison HD and MD
transmissions. It is activated by an on/off switch in the auxiliary panel
and is controlled by a stalk switch mounted in front of the wiper switch.
You can set 6 different levels with the stalk switch.
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