The Palmer Johnson testing process is an important part of of the services that we provide to our customers. The test procedure is used by all of our service technicians at all of our branches across the country.  This multi-step test procedure is used for power shift transmissions and torque converters. These OEM units can be from, but are not limited to, ZFTwin Disc, and Dana. Watch Mike Herms, Technical Support Manager, discuss the Palmer Johnson testing process: