940 L4-2.3L SOHC VIN 88 B230F (1992)
AW70/71 without lock-up function or kickdown inhibitor.
Gear Selector Valve (1)
Operated directly by the gear selector mechanism, the valve determines the position (P, R, N, D, 3, 2,1) in which the gearbox operates.
The valve is supplied with oil at line pressure and distributes it to the appropriate passages according to the position selected. The governor is
also supplied from the gear selector valve.
The pressure used in the actual gear-shifting operation (i.e. to engage clutches and/or brakes) is low when the load on the gearbox is low, and
vice versa.
Primary Regulator Valve (2)
The primary regulator valve modifies the line pressure to suit different operating conditions. For example, a higher pressure is required in the
R position and when accelerating.
By-pass Valve (3)
The by-pass valve protects the oil cooler from excessive pressure.
Relief Valve (4)
Located immediately downstream of the oil pump, the relief valve opens if the line pressure becomes excessive.
