Function of gear change - GF27.60-P-3010G

TRANSMISSION 722.6 

Operation 

Every gearchange is triggered by the electronic transmission control (ETC). Each shift sequence is assigned a control block. Each of these contains one overlap regulating valve, one holding pressure shift valve, one shift pressure shift valve, one command valve and one electromagnetically actuated switchover valve (upshift / downshift solenoid valve).

Actuation of the solenoid valve switches over from stationary mode to the shift phase.

When the gearchange is complete the solenoid valves are no longer actuated as the different gears are subject to a self-hold function in stationary mode.