Author	[Modern View]
Wilamayb 09-02-2012 19:57:56 66.168.153.148 Report to Moderator	Dad and I did a neat little conversion of a 95 model 5.9 cummins mated with a NV4500 trans installed into a 67 Ford F350. All was well until dad called to tell me that he had it stuck in overdrive. He pulled hard enough on the shifter to make the shifter jump the gates causing him to have to pull the shifter and remove the trans from OD with a prybar. He put it back in again thinking it was a fluke only to have it stick again. He did say it took a great deal of force to get it out with the prybar. I dont think it is the shifter causing the problem. I dont think it would be jumping the gates if the trans shifted with a normal amount of force. Anyone know what could be causing this? I read on a diesel forum that it could be the detents in the synchronizer called "shift struts". Anyone have any thoughts? Thanks!! [Reply]   [No Email]
Dodgeit 09-03-2012 15:52:10 99.95.157.81 Report to Moderator	Re: Anybody a NV4500 trans guru? in reply to Greg K, 09-02-2012 19:57:56   Quoting Removed, click Modern View to see Try this site http://forum.mopar1973man.com/forum.php?s=75bd490abcbee7f7d3b67047ef72dbfc   [Reply]  [No Email]
Jeff B. 09-03-2012 13:05:33 69.20.162.151 Report to Moderator	Re: Anybody a NV4500 trans guru? in reply to Wilamayb, 09-02-2012 19:57:56   I sell transmission parts for a living, and the nuts on the 5th gear are a real problem. There are various fixes for them, but the best one is to install an updated mainshaft with longer splines, and then use one of the locking nuts with little set screws to secure it to the mainshaft. I've even seen our shop go so far as to weld the nut to the mainshaft. I would put up good money to bet that is your problem.   [Reply]  [No Email]
Sprint 6 09-03-2012 06:29:56 50.102.24.66 Report to Moderator	Re: Anybody a NV4500 trans guru? in reply to Wilamayb, 09-02-2012 19:57:56   I have seen other manual transmissions wear the synchros to the point the shift keys are overexposed when the shift collar engages the drive gear. The keys then pop up at an angle and lock the collar into the gear.   [Reply]  [No Email]
chevytaHOE5674 09-02-2012 20:20:36 74.221.56.19 Report to Moderator	Re: Anybody a NV4500 trans guru? in reply to Wilamayb, 09-02-2012 19:57:56   Read up on modifications that should be done to the NV4500. It is common for the 5th gear nut to back off and cause major issues...   [Reply]  [No Email]
Wilamayb 09-02-2012 21:22:44 66.168.153.148 Report to Moderator	Re: Anybody a NV4500 trans guru? in reply to chevytaHOE5674, 09-02-2012 20:20:36   Yes, the 5th gear nut seems to be most of what I find. The syptom of that seems to be the lack of 5th gear. The gear is stil there on my trans. It pulls itself just fine in 5th. The problem is getting it out of gear once its in.   [Reply]  [No Email]
bison 09-02-2012 22:49:20 69.168.144.138 Report to Moderator	Re: Anybody a NV4500 trans guru? in reply to Wilamayb, 09-02-2012 21:22:44   Quoting Removed, click Modern View to seeMight be broke sinc ring, had that in bro's nv 4500,was stuck in third gear. Loose 5th gear nut can cause it too.   [Reply]  [No Email]