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Go Back   Dodge Cummins Diesel Forum > 2nd Gen. Dodge Cummins 98.5-02 24V Forums > 98.5-02 Powertrain
98.5-02 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect..NO ADVERTISING .

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Old 11-05-2011, 06:30 PM   #1 (permalink)
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nv4500 disassembly

hey guys, im putting a new clutch in this week, and also getting my case welded due to a little crack. but besides that, should i remove the shifter cap and top cover and re seal to ensure that when i put the tranny back in the truck that all the leaks stop?

ive never disassembled a nv4500 before so my next and most important question for you guys is, when i remove the top cover (not just the shifter cover) ARE THERE GONNA BE ANY PARTS THAT COME FLYING OUT? or is it simply just a cap??

thanks
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Old 11-05-2011, 07:13 PM   #2 (permalink)
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Nope, no parts will fly out. The cover is sealed with silicone.

I've rebuilt mine with the Quad4x4 kit and I'm installing the big input shaft this weekend...
I bent the friction disk installing it last time so be careful removing and installing the trans. Or you'll have shifting problems with a slightly bent disk.

Good Luck.
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Old 11-05-2011, 07:26 PM   #3 (permalink)
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ill be extra careful, im gonna reseal the shifter cover AND the main cover just to make sure i dont have any leaks from there, my transmission is soaked so i wont know where the leak is coming from until i pull the tranny, as long as the main cover doesnt have any parts to fly out with it then what kind of silicon sealant should i use??

thanks
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Old 11-05-2011, 08:00 PM   #4 (permalink)
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I'd be willing to bet that you shifter seal is leaking. It's the seal under the 4 bolts that have to be removed to remove the lower shifter rod.

I's say it would be unusual for silicone to just fail on the top between the case and aluminum cover.

Need a technical manual shoot me an email.
Steve8511@gmail.com
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Old 11-05-2011, 08:06 PM   #5 (permalink)
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ok thanks! i got a leaky transfer case, cracked bellhousing so ill be in touch, ill be tearin everything apart in a few days
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Old 11-06-2011, 01:09 AM   #6 (permalink)
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Quote:
Originally Posted by Shockwave View Post
Nope, no parts will fly out. The cover is sealed with silicone.

I've rebuilt mine with the Quad4x4 kit and I'm installing the big input shaft this weekend...
I bent the friction disk installing it last time so be careful removing and installing the trans. Or you'll have shifting problems with a slightly bent disk.

Good Luck.
Best bet is to use a transmission jack, NV4500 is heavy, transmission jack makes it easy to line up.
Once you have the transmission within 3/4" of the bell housing, you are just short of getting the shaft into the pilot bearing. At this point I either have a helper depress the clutch, or use a board to hold it down.
This allows the friction disk to float free while getting the shaft into the pilot bearing. This is done by HAND, you should be able to get the surfaces of the Bell Housing and transmission flat together without using the bolts, otherwise you may bend things.
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Old 11-08-2011, 02:43 AM   #7 (permalink)
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use anerobic sealer not silicone you will be much happier
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