JF506E O-Ring Transmission parts, repair guidelines, problems, manuals

Transmission general data

Number of gears Transmission Type Drive Torque (Nm) ATF (full capacity) L ATF (change) L ATF type
5 AT FWD 350 9 5 G 052 990
Part type (1) Expand

Technical issues and repair guidelines

The 09A\09B/JF506E filter with metal mesh is replaced during the transmission reassembly. The planned overhaul of older JF506E lies in replacement of worn-out rings and gaskets which are frequently exposed to leakages. The overhaul includes the assembly and replacement of the whole friction components kit. Kicks, pushes, and slipping in this transmission are considered to be the symptom of solenoids and valve body malfunction.


One of the reason for valve body malfunction is the damage (by contaminated ATF) of the channel and valve (TCС Pressure Regulator Valve) controlling torque converter blocking . Then goes a chain reaction related to fast ATF contamination by the torque converter clutch, and dirt starts damaging other channels and solenoid-operated valves. The whole solenoid kit (9 pcs) is usually replaced in the process of transmissions (which covered more than 200-300 tonne-kilometre) overhaul. Common spare parts for cosmetic repair are: pump seal and pump bush, which is identical for RE4F03A. The filter helps to preserve ATF clean and reduces friction units wear-out.