Technical Selespeed won't engage 4th gear

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Technical Selespeed won't engage 4th gear

kamilsmk

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Mar 7, 2024
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Limassol
Hey guys, having issue with my fiat 500, 2008 with selespeed cfc328. The car had an oil leak from crankshaft seal, so i removed the gearbox, replaced the seal and reinstalled the gearbox. When performing End of Line calibration it would only go in RN123, no 4th or 5th gear. When driving the car, when switching from 3rd to 4th it just drops into neutral. Then i dropped the gearbox again, replaced the clutch kit, fork & bushes, but without any success. After that i tried rebuilding the selespeed robot by replacing the seals/orings, but without any success too. Not sure what to do/check next. Should i tear down the gearbox to check the gears/synchros? Or maybe the problem is with the robot? Any help appreciated. Just to mention when removing the gearbox 1st time i dropped it on the ground by mistake from about 50cm height. No visual damage on the gearbox tho so not sure if matters.
 
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