Volvo VHD - Manual (Page 99)

Instruments and Controls 93
Transmission Retarder
If the vehicle is equipped with an Allison
HD or MD transmission, the retarder lever
is located in front of the highbeam and
windshield wiper/washer lever. You can
move this lever to six different positions to
set the level.
The retarder on/off switch is located in the
dash, in the right-most position in the aux-
iliary panel. See page 243 for more
information. W3004405
W3004428