F4A4B

AUTOMATIC TRANSAXLE OVERHAUL [F4A4B]

GENERAL DESCRIPTION
This automatic transaxle is made up of the following main parts.
The torque converter employs a 3 element, 1 step, 2 phase lock-up clutch.
The gear train is made up of 3 multi-plate clutches, 2 multi-plate brakes and 2 planetary gears made up of a sun gear, carrier, pinion gear and annulus gear.
The cases consist of a converter housing, transaxle case, rear cover and a valve body cover.
Parts related to oil pressure regulation are the oil pump, which pressurizes the oil; the regulator, which controls the pressure setting; the solenoid valves, which change the oil pressure with electrical signals; the pressure control valve, which controls the oil pressure coming from the solenoid valve that affects each clutch and brake; valves, which retain the oil pressure through the lines; and finally the valve body, which houses all the valves.

SECTIONAL VIEW:

SECTIONAL VIEW

HYDRAULIC CIRCUIT:

HYDRAULIC CIRCUIT