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Showing results for tags '5th gear nut'.
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Hi, just experienced the fifth gear problem yesterday, i was hauling my trailer, when all of the sudden i hear a noise and vibration from the transmission. After that my fifth gear will not work any more, luckily made back in fourth. Today we drop the transmission to see what was the problem, and i find that the nut on the mainshaft came loose and my fifth gear and mainshaft gear were gone. I've been searching on the internet and found out this is a typical problem for the NV4500 transmission. Just ordered the gears and need to order the nut also. Having a hard time picking a design that works, would appreciate any input or experience on the parts i need to fix my truck. Thanks.
40 miles from home on vacation to Florida, the NV-4500 developed a second neutral, right where 5th gear used to be.A mechanic friend got us right in and did the whole job for $250.He used the Chrysler split nut and some synthetic lube he uses in the NV-4500's.It is a little difficult to get out of 5th now when hot (towing) and didnt used to be. Fine when cooled down.We didnt have Royal Purple to put back; we have run RP for 110,000 miles with perfect shifting.5th gear was a little sloppy fitting on the shaft splines, 250,000 miles of wear I suppose.Any thoughts on the split nut fixing the problem of the nut backing off?And any thoughts on why now it is hard to get out of 5th gear when hot?TIA