Gear Lock Nut Retainer 5th NV4500 Dodge 2500 3500 HD 5.9L Cummins 4WD Transmissions

Item Num:

LNR-DODGE01

Description:

The New-Venture 4500 5-speed transmission has been a great workhorse for the Dodge Ram trucks. Unfortunately, the models designed for 4wd/4x4 operation have a common design flaw with the 5th-gear set-up. The lock nut which secures the 5th-gear assembly to the main shaft will vibrate loose over time and allow the 5th-gear assembly to works its way off the splines of the shaft, and no longer mesh with the companion gear. This causes the loss of use for 5th-gear, and can also cause significant damage to the transmission's mainshaft, resulting in very costly repairs. Common symtptoms for the early stages of 5th-hear lock-nut failure include but are not limited to; excess transmission noise (especially in 5th-gear), jumpy/jerky 5th-gear driving, difficulty with engaging 5th-gear and or grinding when entering 5th-gear. Later stages may be as severe as complete loss of 5th-gear functionality, almost seeming as if you've shifted into neutral instead. If your truck is suffering from any of these symptoms, this may be the fix you need.

Suit:

Dodge Ram trucks equipped with 5-spd NV4500 4wd Transmissions.
ONLY fits 29-spline output shafts (DODGE 4wd models)
Does not work with GM/Cheverolet NV4500 transmissions

Feature:

* If they are not damaged there's no need to purchase a mainshaft update kit or a new lock nut
* Works with either original or aftermarket mainshaft or nut
* No special tools needed. ( see installation instructions below )
* Ensures that the fifth gear isn't lost. Helps to keep the transmission running smoothly
* Make it a regular part of all your Dodge 4wd NV4500 rebuilds
* The lock nut retainer is made of durable Chromoly steel

Installation Instruction:

1. If you don't have a lifted truck with easy underside access. Lift the truck with jacks, and support from the frame using jack stands.
2. Disconnect the front and rear driveshafts from the transfer case, and remove the transfer case from the vehicle.
3. Unbolt and remove the extension housing from the transmission assembly.
4. Take a moment to viauslly inspect the mainshaft and gear assembly for excess wear or damage.
5. a. If installing proactively with original locknut still secure, re-check torque and set to factory spec of 280 ft-lb.
b. If original lock nut has backed off, and you're reinstalling. Remove fully, check threads, reinstall and torque to factory spec of 280 ft-lb.
c. If installing NEW lock nut, torque to factory spec of 280 ft-lb, and secure any set-screws if applicable.
6. Slide the locknut retainer over the mainshaft so that the 4 tabs align and seat fully into the locknut. This may take a few tries.
*ATTENTION: Depending on the brand/style of locknut you're using, they may be upto a 1/8th Inch gap between the retainer and locknut. If there is more, please slide the retainer off, and attempt seating in a different position.
7. Reinstall the extension housing onto the transmission, using a new paper gasket or silicone. The housing should easily sit and mate flush with the transmission.
8. Proceed to reinstall the Transfer case onto the transmission. Make sure that before tightening the transfer case to the transmission, that the transfer case seats fully onto the extension housing, and has no gaps anywhere aroung it. If the transfer case does not sit flush ont the transmission, please contact us for further instructions.
9. Reinstall the front and rear driveshafts to the transfer case.
10. With everything reinstalled, ensure proper fluid levels in both the transfer case and transmission before operation.

Package:

1* Gear Lock Nut Retainer