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frankie591 11-19-2013 11:46 AM

ZF320 detent pin test?
Hello all,

I recently got a zf320 from a 328i and will be putting it into my m52 swapped e30. The trans came from a wrecking yard with a confirmed 50k mileage, and I am able to shift it into all gears. Since I never was able to test the trans personally, I am a little concerned about the detent problems, and popping out of gear. Wondering if there is a way to test for this issue with the trans out of the car?

Any help appreciated,


frankie591 03-18-2014 02:00 PM

posting for future reference:

If you attach your shift carrier, selector rod and a shift lever to the trans, you can shift the trans through the gears. If it is difficult to pull out of gear into neutral, the shift pins (3) on the top of the trans are sticking and need to be replaced.

The shifter in neutral should have a "home position" between 3rd and 4th. With the trans in neutral, push the lever straight forward into gear. Spin the input shaft of the trans to determine whether you are in 3rd gear or 5th gear (you know if you are in 5th because of the 1:1 ratio). If the trans shifts into 5th then your 5th gear detent spring (passenger side of trans) is worn and needs replacement. Another test is to shift into 5th gear, then pull the shifter back into neutral. If the shift lever stays leaned over towards 5th gear (5th gear lean) then the detents need replacement. When pulled out of 5th gear, the shift lever should spring back to the center position between 3rd and 4th if the trans is functioning as it should.

Feel free to pm me with any questions.

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