RL4F02A Friction Transmission parts, repair guidelines, problems, manuals

Transmission general data

Number of gears Transmission Type Drive Torque (Nm) ATF (full capacity) L ATF type
4 AT FWD 260 6 Nissan AT-Matic D Fluid
Part type (1) Expand

Technical issues and repair guidelines

This transmission is quite reliable, but when it comes to the repair of this transmission is can be quite expensive. Thus, many car owners prefer to replace this gearbox by the used one. The problem of “old” RL4F02A transmissions as in all Nissan gearboxes lies in the electronic control elements. The torque converter lock-up solenoid operates quite intensively and gets out of service very early. It was modified several times.The rest of solenoids should also be changed before they stop operating properly, because it leads to the oil starvation, cranking of bushings, deterioration of drums, planetary gears and pump.


But usually issues are related to general ageing of rubber gaskets and wear-out of friction components, which contaminate valves of the valve body and solenoids, prevent springs from moving valve cores. All this results in such common issues as jolts and stoppages. The wear-out of friction elements initially affects the torque converter lock-up mechanism, then worn-out clutches start slipping at some gears and the car ceases moving uphill. Generally, this transmission is quite reliable and has a high operational reserve. After the reassembly and cleaning, this gearbox can operate on the snow and in off-road conditions for a long period of time.