As the vehicle accelerated, rear pump output would increase and initiate a shift to direct. The rear pump pressures were modified by a throttle valve, and governor, both of which could delay the upshift, or even trigger a forced downshift at driver command.
As the vehicle accelerated, rear pump output would increase and trigger a shift to direct. The rear pump pressures were adjusted by a throttle valve and governor, both of which could slow down the upshift or even force a downshift at driver request.