The Ford Barn - View Single Post - 50 Merc transmissions shifter arm location

rotorwrench · 06-27-2016, 10:34 AM

I don't know if you've solved your problem yet but the first thing you have to do is get the transmission in neutral (both arms in midpoint). If you can do that, it will likely shift at least into low gear. Something is not right with the shift rod adjustments or your column shift tube has problems. I've changed one of those over the years due to the nubs getting worn down. It could also be a problem with the shifting mechanism or the way the gears fit on the main output shaft but I haven't had much trouble there over the years.

The front arm actuates the 2nd & 3rd synchro. The rear arm actuated the low reverse gears (non synchro). If you have overdrive, there can also be problems there.

06-27-2016, 10:34 AM	#5
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,440	Re: 50 Merc transmissions shifter arm location I don't know if you've solved your problem yet but the first thing you have to do is get the transmission in neutral (both arms in midpoint). If you can do that, it will likely shift at least into low gear. Something is not right with the shift rod adjustments or your column shift tube has problems. I've changed one of those over the years due to the nubs getting worn down. It could also be a problem with the shifting mechanism or the way the gears fit on the main output shaft but I haven't had much trouble there over the years. The front arm actuates the 2nd & 3rd synchro. The rear arm actuated the low reverse gears (non synchro). If you have overdrive, there can also be problems there.