anyone know about loosing 5th on a nv4500? all other gears work great, 5th is just a new neutral. mike
It's just the tailshaft? So I need to get the transfercase down first, correct? I think I might be able to handle that. Any tips would be appriciated, but I think I know what I'm doing this weekend now. damn, I wanted to hit the lake.
Well I have never done one, so no experience here. You are definantly suffering from a backed off retainer nut though.
There is an update retainer nut that is peened so it won't back off available too. Or you can reinstall your current nut and tack weld it in place so it won't back off. This is more of a diesel problem with the vibration and torque but gassers suffer from it too apparently. Harley
I'm guessing the truck has towed a lot and with the good torque of the V10, probably spent a lot of time in 5th. That makes me wonder about my C3500 Chevy with the NV4500, as the PO towed a lot.
The truck has towed a lot, and a lot of that was over gcwr. I ended up calling a shop in town and they have fixed about a dozen with the same problem so I brought it to them. Should have it back tomorrow. I'm guessing you don't hear much about this with gassers because the V10/5spd is a rare combo. I got a recall for all V10/5spd/4x4 for '94-'00 and there were only 800 effected. I love it all but the gas bill. At 8 years and 130000 miles I'm going to start shopping for a new one soon. Thinking GMC 3500 4x4 with D/A. I need a real crew cab since I have kids now.
The reason why it's uncommon with your truck is because the gas engines don't have the vibration of the diesels, plus the diesels have a higher chance of getting loaded up heavier and ran in 5th since the cummins pulls so well in that RPM range. This is what I have gathered anyway.
Tack welding the nut back on will only help for a little while. It will eventually break the tacks and come off again. This time it was the nut and the shaft!! A buddy of mine had it happen and learned the hard way. Do it right the first time as it is less expensive in the long run.
