Chassis Dynamometer - Operation (14-04)
Section 14 - Engine Testing - Group 14
B Series Shop Manual
If power specifications are not met, refer to B Series
Troubleshooting and Repair Manual, Bulletin No. 3810486.
NOTE: If the engine is to be stored temporarily and does not
have permanent-type antifreeze, it is necessary to drain all
coolant. Drain locations are identified on the engine side
views, pages 14-4 and 14-5.
Prepare the engine for Engine Painting (14-08) or Engine
Storage (14-09) or (14-10).
Chassis Dynamometer - Operation
The performance of an engine installed in on-highway
vehicles can be tested on a chassis dynamometer.
NOTE: Due to driveline efficiency and engine-driven acces-
sories, the engine horsepower when measured at the rear
wheels will be reduced by approximately:
· 20 percent for single axle vehicles
· 25 percent for tandem axle vehicles
NOTE: These percentages are used for engine run-in only
and are not to be used as absolute figures.
Caution: Follow all the vehicle manufacturer's safety
precautions before installing or operating a vehicle on a