The control of the oil strain during the lock-up clutch is done by two valves: the relay valve as well as the sign valve. In this sort of arrangement the signal valve controls the strain on one aspect on the relay valve, which controls the force within the lock-up clutch. https://torqueconverterclutch53962.blog-gold.com/43624471/a-secret-weapon-for-torque-converter-clutch