The transmission hydraulic control system is composed of a pump, filter, series of valves, and a control lever and linkage mechanism. The hy¬draulic control system directs oil to the clutches in the transmission.The pump (15) delivers oil to the full flow oil filter (7). If the filter element becomes clogged, a filter bypass valve opens and allows the oil to flow unrestricted to the hydraulic control valve.^From the filter, oil is directed to the control valves in the top compartment of the transmissionThe first valve the case. oil contacts the speed selector valve is (5). The valve is a valve spool position four which is positioned by direct mechanical linkage to oil to one of the three speed clutches (No. 3, No. 4, No. 5, or 8). A parallel passage in the speed selector valve body directs the oil pressure control valve to the app flo body (14). This passage also supplies oil to the valve (8) ratio converter to charge the torque converter (23).
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