Secondary Valve Body
The secondary valve body contains the pressure high (PH) regulator valve, the pressure high control (PHC) shift valve, the start clutch back-up valve, the clutch reducing valve, and the start clutch accumulator valve.
- PH Regulator Valve
The PH regulator valve maintains hydraulic pressure supplied from the CVTF pump, and supplies PH pressure to the hydraulic control circuit and the lubrication circuit. PH pressure is regulated at the PH regulator valve by the PH control pressure (PHC) from PHC shift valve.
- PHC Shift Valve
The PHC shift valve supplies PH control pressure (PHC) to the PH regulator valve to regulate PH pressure in accordance with the drive pulley control pressure (DRC) or driven pulley pressure (DNC).
- Start Clutch Back-up Valve
When a control system malfunction occurs, the start clutch back-up valve supplies start clutch control B pressure (CCB) based on shift inhibitor pressure (SI) to the start clutch.
- Clutch Reducing Valve
The clutch reducing valve receives PH pressure from the PH regulator valve and regulates clutch reducing pressure (CR).
- Start Clutch Accumulator Valve
The start clutch accumulator valve stabilizes the hydraulic pressure that is supplied to the start clutch.