Dodge NV4500 5th Gear Problems

This manual transmission is used everyday for people who haul a lot of weight. The most common thing I hear is “I was driving my Dodge Ram 2500 and I was pulling a trailer and I lost 5th gear”. This is happening everyday, somebody out there is on the side of the road in there Dodge truck with no 5th gear. You would have thought that New Venture Gear would have designed a manual transmission without this big of a problem. Millions of people everyday are depending on there Dodge Ram or Chevy Silverado pickup trucks to haul heavy loads for work or maybe even just get them back and forth to work. These are the reasons why this is happening, because the NV4500 manual transmission was not manufactured correctly from the beginning.
The most common issue with the NV4500 five speed manual transmission was the 5th gear nut coming loose on the rear of the main shaft due to insufficient support. The nut would come loose and the 5th gear would slide rearward causing it to loose 5th off the counter shaft and then lost somewhere in the tail housing. They also used a half spline main shaft which does not allow the nut to stay on. This issue has made this manual transmission the most popular transmission.
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