A Balancing Act
There is very little information written about this transmission concerning the valve body and its associated hydraulic operations. For this reason ATSG has produced a Technician Guide that provides extensive information including valve-body mapping and a complete set of hydraulics. In the process of developing this guide, we discovered a unique way in which this unit controls clutch application. The high-clutch amplifier valve in the upper valve body (Figure 2) serves as a perfect example.
