Re: new process


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Posted by Paul (in NY) on Tuesday, June 13, 2006 at 10:56AM :

In Reply to: new process posted by Mike McConnell on Tuesday, June 13, 2006 at 6:37AM :

Mike;
The 5th gear problem is well known on eariler NV-4500's. The only repair approved by New Venture is to replace the main shaft. The new shaft features a different lock system for the 5th gear. However, there are other aftermarket fixes, some appear to work well. The one with the best reports appears to be made by Bloomingthal's in Oklahoma City. I dont know the correct spelling for Bloomingthal, but they are a large machine/drive line shop in OK City.

Here is a email I received from NVG describing the problem. Also Google "5th gear failure" you will get a lot of hits.

"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. Transmissions built after January 1st, 1999 feature a new 5th gear retention system.

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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