B2 Control Valve

Drive (19) fluid pressure is regulated through the B2 control valve into the B2 control 1 (30) fluid circuit. B2 control 1 (30) fluid pressure is routed through the U1 shift valve into the B2 control 2 (31) fluid circuit and on to the M1 shift valve where it is blocked by the valve in preparation for an upshift to second gear.