Posted by Paul (in NY) on Thursday, April 28, 2005 at 8:12PM :
In Reply to: Re: Pull the OD cover, tighten nut? posted by Paul (in NY) on Thursday, April 28, 2005 at 7:36PM :
here is a email I received a while back. Now there is an even better NV nut retention setup.
Further all NV-4500s built after Jan 1, 1999 incorporate the entirely new design of 5th gear nut retention.
Paul
*****
From: "John Malone" <JohnMalone@newventuregear.com>
Sent: January 2, 2003
Subject: NV 4500 Manditory Repair
Paul;
The NV 4500 Transmission as used in General Motors, Chevy and Dodge Trucks form its introduction to 1995 suffer a design problem in the 5th gear lock nut retainer. It is probable that during the life of the NV 4500 Transmission, the 5th gear retainer nut will loosen and allow the final 5th Overdrive Gear to fall off the shaft. When this happens SERIOUS damage will happen to the Overdrive. The more miles the transmission has, the more apt the fail to occur.
The update to eliminate this problem is a new 5th gear Nut with a newly designed retainer. The retro fit requires special tools and can not be done properly without the special tools. All Authorized New Venture Transmission stations can make the retro fit. The cost which includes a modification to the output shaft is $250.00, Two Hundred Fifty Dollars.
All transmissions modified by New Venture Transmissions will have the words "NEW NUT" stamped into the case by the top left Overdrive
mounting bolt. If these words are not there, consider the transmission as unmodified and a serious threat of failure.
I hope this answers your question on the 5th gear nut failures.
Sincerely
John Malone
NV 4500 Customer Support
New Venture Transmissions
Syracuse, NY
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