SAIC Datsun T60, 2.0T, equipped with 6L50 transmission. Failure phenomenon for hanging the reverse gear does not refueling does not go, refueling rpm can be reversed after pulling up, occasional direct idling, power interruption.
The test car found that the forward gear shift is normal, so the fault information, showing that the transmission is normal and no code.
According to past experience, reverse gear brake ancient piston is one of the most easily damaged components, combined with this car failure phenomenon, in all likelihood. So first of all, the car on the lifter to drain the oil, observe the quality of the oil, black, there is a smell of a slight paste.
The next step is to lift the transmission session and break down and open the case to find the problem.
This is a low reverse brake, you can see that the friction plate and the steel plate has been blackened, this is obviously the combination of incomplete, in the half linkage time is too long to complete the slippery wear.
Further pressure testing of the double sided ancient found very serious air leakage, disassembled the double sided drum to look at the piston.
This piston is damaged to the extent that it can be said to be the same as the 09g gearbox 4th gear piston fitted to the VW.
This one makes it clear that something has failed on the internal mechanical components causing the reverse gear to slip, requiring a brand new piston and set of clutch plates.
Other accessories need to be cleaned and assembled to solve the problem, it should be noted that the spool in the oil pump is easy to wear.
