• Make sure the tires are inflated to the manufactur-
er’s specifications.
• Remove all rocks or other material from the tread of
all tires that will be rotating on the dynamometer
rollers.
• Make sure there is correct overhead clearance for
exhaust stacks, air deflectors, or other attachments
above the cab.
Caution: The ‘‘tie down’’ chains must have slack to
prevent damage to the chassis dynamometer.
• Carefully position the vehicle on the rollers.
• Attach the ‘‘tie down’’ chains to the rear of the
vehicle, and put wheel chocks in front of the front
wheels.
• Adjust the vehicle and dynamometer room exhaust
system to make sure all exhaust gases are removed
from the room.
• Refer to the chassis dynamometer and vehicle man-
ufacturer’s recommendations and specifications for
testing procedures.
Chassis Dynamometer Operation (8-05) Engine Testing
N14Page 8-40
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