Go Power D-356/D-556/D-756 Dynamometers
If you have a D-356, D-556, or a D-756, no dedicated operating manual is available. This series is a combination of the D-316 and D-357. You will need to refer to both manuals: the D-316 manual will cover the internals of the aluminum brake and can be found here: DA-315/516 Manual. The D-357 manual will cover information on the trunnion support system.