Converter Clutch Applied

Drive Range - Second Gear, Converter Clutch Applied:

D-4 - SECOND GEAR (Converter Clutch Applied)

CONVERTER CLUTCH - APPLIED
OVERDRIVE ROLLER CLUTCH - HOLDING
FORWARD CLUTCH - APPLIED
INTERMEDIATE BAND - APPLIED

As vehicle speed and governor pressure increase, the force of governor oil acting on the converter clutch shift valve overcomes the pressure of Modulated Throttle Valve (M.T.V.) up oil and the force of the converter clutch Throttle Valve (T.V.) spring. This allows the converter clutch shift valve to open and 2nd oil to enter the converter clutch signal passage. Providing the converter clutch solenoid is on, converter clutch signal oil will shift the converter clutch apply valve, and redirect converter feed oil into the apply passage, The apply oil flows between the stator shaft and converter hub to charge the converter with oil and push the converter pressure plate against the converter cover, causing a mechanical link between the engine and the turbine shaft. The rate of apply is controlled by the orifice check ball capsule in the end of the turbine shaft.

At the same time the converter clutch apply valve will direct converter feed oil through an orifice to the transmission cooler. Cooler oil is directed to the transmission lubrication system.

SUMMARY

The converter clutch is applied, the overdrive roller clutch is holding, the forward clutch is applied, and the intermediate band is applied; the transmission is in Drive (D) Range - Second Gear. The converter clutch is shown applied in Second Gear. In some models, the converter clutch shift valve will not shift until the transmission is in Third Gear.