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NV4500 grinds going into second

jonathan1950
jonathan1950
in 2nd Generation Dodge 24 Valve Powertrain

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So I will need to tear apart my NV4500 and replace the syncros because it grinds when I shift into second gear. If I double clutch then I can shift with out grinding gears, but trying to down shift is difficult, so I am planning on tearing it down to replace the syncros, just wondering if I should have any other parts handy to replace since it is opened up? It seems to be fine otherwise, no whining, the gear shifter is tight and it does not seem to leak any fluids. I do not know if it has the fifth gear fix or not? Thanks for any insight.

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I'd replace the main bearings while you're tearing it apart. At least the front one. And the input shaft seal.As long as you don't need to remove the countershaft for anything, I'd just check the teeth and such on it. 5th gear nut, output shaft seal, etc.. they're not that much $ but well worth not having to pull the trans again because they started leaking. :banghead:trust me, I know.

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    This is why I am asking, so I do not have to be :banghead: a month after I get it back in. I would rather only have to pull the trans once than have to pull the trans twice, I do most of my own work, but it is still the time and effort to do it I might as well do it only once.

    I'd replace the main bearings while you're tearing it apart. At least the front one. And the input shaft seal. As long as you don't need to remove the countershaft for anything, I'd just check the teeth and such on it. 5th gear nut, output shaft seal, etc.. they're not that much $ but well worth not having to pull the trans again because they started leaking. :banghead: trust me, I know.

    I got most of my stuff from quad4x4.com, but I'm sure someone here may have another (better?) solution for parts.

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    If you need the 5th gear fix this looks good to me but have not tried it myself http://fifthgearrepair.com/index.html

    I just tack-welded the locknut to the gear and called it done. 3 yrs running and it's still snug as a bug.
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    Welcome To Mopar1973Man.Com LLC

    We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.