Category Archives: drivetrain

Nv4500 part 600

Setting the torque was very tough. Lowering the lift beam on the housing keep it steady enough to torque the nut.  Copious amounts of Red Loctite prior to installing the nut for the last time. Keeping the housing steady. Use … Continue reading

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Remote oil filter

The stock oil filter port for the Cummins 6at block I have will not clear the right frame rail.  I have used the stock oil filter attachment to make an aluminum plate  The bolt holes are 11/32 matching the stock … Continue reading

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Nv4500 part 500

.004 end play. Absolutely perfect. .002-.006 is the allowance Used .017 total shim. I bought a 1 7/8 Proto socket at Pacific Industrial and modified it to turn the 5th gear retention nut. I started by turning the rear flat so … Continue reading

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NV4500 Part 3

Check to verify the main shaft has .002 to .004 end play             Clean 5th gear retainer nut with break clean and dry Clean main shaft threads and dry be sure concave washer has inner … Continue reading

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NV4500 assembly cont. 

New input seal from Quad 4×4 This bearing race was the perfect size to press the seal into the NV4500 front cover. Cleaned up front cover ready to have the seal pressed in b   Went in very easily. I would not … Continue reading

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NV4500 assembly 2 

                                                                                      I am using assembly instructions for a 2004 Chevy Silverado 2500. The instructions were to install the … Continue reading

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Nv4500 / Forbyn Shaft Assembly. 

Work has started installing the new output shaft from Forbyn Brothers. This is part of Timm Coopers adapter kit that mates the NV4500 to the Land Rover Series Transfercase.                                                             … Continue reading

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Transfercase Assembly

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NV4500 modification day 2

         . Tapping out the front input shaft bearing retainer. Use the Slave Cylinder bolts to pull evenly on the retainer once it has started to come out. You can also use a long pry bar as seen … Continue reading

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NV4500 modification day 1

I am going to install Forbyn Brothers output shaft in a Chevy 2 wheel drive NV 4500.        I removed the tail housing some time ago. It was quite thin and I broke it as I removed it.       … Continue reading

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