Overdrive Clutch Hydraulic Circuits

Hydraulic Circuits

Overdrive Clutch Hydraulic Circuits

When the overdrive clutch is applied in 4th, 5th and 6th gear, LINE pressure is supplied to the low/reverse/overdrive (4, 5, 6) clutch regulator valve from the pump. The low/reverse/overdrive (4, 5, 6) clutch regulator valve is controlled by SSD and directs regulated pressure to the multiplex shift valve through the CBLR/C456 SUPPLY hydraulic circuit. The multiplex shift valve directs the regulated pressure to the multiplex manual valve through the C456 SUPPLY hydraulic circuit. The multiplex manual valve directs the regulated pressure to the overdrive (4, 5, 6) clutch through the C456 hydraulic circuit. The C456 circuit also supplies pressure to the CB26 clutch regulator valve to boost the pressure from SSC in 6th gear.





When the overdrive (4, 5, 6) clutch is released in PARK, REVERSE, NEUTRAL, 1st gear (below 5 km/h [3 mph]) and LOW position, LINE pressure is supplied to the low/reverse/overdrive (4, 5, 6) clutch regulator valve from the pump. The low/reverse/overdrive (4, 5, 6) clutch regulator valve is controlled by SSD and directs regulated pressure to the multiplex shift valve through the CBLR/C456 SUPPLY hydraulic circuit. The multiplex shift valve directs the regulated pressure to the low/reverse clutch through the CBLR SUPPLY hydraulic circuit.





When the overdrive (4, 5, 6) clutch is released in 1st (above 5 km/h [3 mph]), 2nd and 3rd gear, LINE pressure is supplied to the low/reverse/overdrive (4, 5, 6) clutch regulator valve. Solenoid pressure is not applied to the low/reverse/overdrive (4, 5, 6) clutch regulator valve and the regulator valve blocks regulated LINE pressure to the multiplex shift valve assembly.