A/T - Overdrive Planetary Burn Up

TRANSMISSION: L4N71B, E4N71B & JM600

BULLETIN: # 053

SUBJECT: O.D. Planetary Burn up

APPLICATION: Nissan

DATE: June 1991

OVERDRIVE PLANETARY BURN UP





If you have an L4N71B, E4N71B or a JM600 with a burnt up planetary, make sure you don't have the intermediate shaft in backwards. Figure 1 shows all three types of intermediate shafts.





The next thing you'll want to do is make sure you have a .250" gap in the 3-4 accumulators' lower sealing ring. (Figure 2)





This was a factory modification that allows line pressure to bleed out an exhaust hole (figure 3) to add extra lube to the planet.

Note
Early accumulators do not have this gap, you'll have to cut the sealing ring yourself. When you do this you'll need to use a heavier spring. A pump slide from a 700-R4 will work just fine.