Chassis Dynamometer (14-03) Section 14 - Engine Testing - Group 14 M11 Page 14-38 The following are general safety precautions to be ob- served while operating the chassis dynamometer. Use tires that have more than 160 kilometers [100 miles] on them. Do not use new tires. Do not use recapped tires or tires of different sizes or designs. 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 pre- vent damage to the chassis dynamometer. Carefully position the vehicle on the rollers. Attach the chains to the rear of the ve- hicle, and put wheel chocks in front of the front wheels.