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MB1 Transmission parts

MB3, MJ3

Transmission general data

Number of gears Transmission Type Drive Torque (Nm) ATF (full capacity) L ATF (change) L ATF type (recommended)
3 AT FWD 150 4,5-5,1 2-3,5 Dexron III

mb1.jpg?1513343325834 The 3-speed automatic transmission Renault MB1 was released in the early 1980-s. This transmission was used for many Renault vehicles, such as Renault 5, 9, 11, 19, Clio and Twingo.

This transmission has 3 forward gears and 1 reverse gear which are combined in the uniform unit with the drive gear and electronically-controlled differential. The oil pump is activated by the engine shaft via the torque converter and transmits the oil under pressure to the gearbox, where it is used as a lubricant and for controlling actuators.

What are you looking for?

Overhaul Kit | Friction Kit | Friction | Steel Plate | Steel Kit | Band | Solenoid Kit | Solenoid EPC | Solenoid TCC | Pump | Shaft | Drum | Valve body | Torque converter | Hub | Piston | Piston Kit | Planetary Gear | Filter | Gasket | Bushing | Seal | Bearing | Pressure Plate | Stator | Differential | Retainer | Inhibitor Switch | Instruction manual | TOOLS & ACCESORIES | Sensor

Which cars run with this gearbox? CLICK

Technical issues and repair guidelines

The most widespread malfunctions of MB1:

• Gear fails to switch on. Any malfunction of solenoid-controlled valves of the hydraulic distributor switches the automatic transmission into emergency mode.

• Oil leakages. In many cases car owners are bothered by ATF leakages. Usually the oil leaks at the junction of the motor and the automatic transmission.

• Critical breakdowns. Low oil level and the pressure loss caused by the valve breakdown lead to burn-out of friction plates.

• Shifting failure. A poor valve body breaks before reaching 100 thousand kilometers. This problem has the following symptoms: jerks, kicks and failure of some gears.

According to transmission repair specialists the resource of this transmission is equal to 100 - 150 thousand kilometers, but it is very unlikely that this transmission will cover such distance without any repairs.


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