Front drive shaft removal - Dodge Cummins Diesel Forum
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post #1 of 17 (permalink) Old 04-15-2019, 10:25 AM Thread Starter
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Front drive shaft removal

Just curious what all is involved in removing the front drive shaft is it just a matter of a few bolts and it slides out I have a slight vibration and would like to take it in to get it balanced.

Vibration only happens in 4 x 4 at 50 km an hour and 20 km per hour

2018 2500. 42000km on it.
Took it to the dealership they told me it's normal it's at a different dealership today but I'm assuming they will come back with the same response trying to get out of a repair.

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post #2 of 17 (permalink) Old 04-15-2019, 03:01 PM
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not sure on the 2018, but on previous models there are 4 bolts holding the rear of the driveshaft to the transfer case and 4 torx style bolts holding the front to the axle pinion flange. The rear bolts are easy to get out. The front Torx are a little more difficult as they strip out very easily, Best method is a long 3" or longer Torx bit and ratchet.

The driveshaft will then simply drop out. When I replaced mine the first time, I replaced the Torx bolts with regular 10mm bolts.

Oh, and the vibration IS normal. It's not right and shouldn't be there. I only say it's normal because it seems like every other truck on the road has it and Chrysler cant seem to figure out what causes it and how to fix it!!

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Last edited by rnoggle; 04-15-2019 at 03:04 PM. Reason: added text
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post #3 of 17 (permalink) Old 04-15-2019, 03:12 PM Thread Starter
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Fair enough hopefully getting the front shaft balanced fixes the issue. Only a $50 job so worth a try
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post #4 of 17 (permalink) Old 04-15-2019, 05:12 PM
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The shaft isnít spinning unless your in 4wd I doubt itís your source of vibration.
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post #5 of 17 (permalink) Old 04-15-2019, 06:50 PM
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If your taking it off, try to mark the orientation of the driveshaft to the axle and transfer case side flanges so you can get it back on how you took it off. You don't want to run a CV drive shaft out of phase, if that makes any sense.

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post #6 of 17 (permalink) Old 04-15-2019, 08:41 PM
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Quote:
Originally Posted by Boa550 View Post
If your taking it off, try to mark the orientation of the driveshaft to the axle and transfer case side flanges so you can get it back on how you took it off. You don't want to run a CV drive shaft out of phase, if that makes any sense.
Someone explain why this is the case as I know it's the truth.
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post #7 of 17 (permalink) Old 04-15-2019, 08:55 PM
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He did say it is only IN 4x4. Check other threads here with the search word "Vibration" There is one here very long about a similar phantom vibration on several trucks.

It is/may be common, but it is NOT NORMAL and do not accept it. They are trying to avoid another lemon law claim for this problem.

One question, does it do it on wet mud or snow and on dry pavement? Low range or high, either?
What happens at higher speeds in 4x4?

Yes it should be that easy to drop. Make sure correct size torx socket is inserted fully and straight. Wobbly head extension may help.

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post #8 of 17 (permalink) Old 04-15-2019, 09:02 PM
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Originally Posted by Handshaking View Post
Someone explain why this is the case as I know it's the truth.
The yokes need to be in the same plane or the joints will bind. There’s no problem removing the shaft as long as you don’t separate the shaft at the spline, then reassemble it out of phase. In this case, marking the shaft and case flange simply makes it easier to get the bolt pattern right the first time.
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post #9 of 17 (permalink) Old 04-15-2019, 09:06 PM
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Originally Posted by bigfish95971 View Post
He did say it is only IN 4x4 .
The obvious sometimes escapes me. By all means check the shaft balance. Also check the double Cardin joint for wear in the centering spring and ball as well as a loose or dry cap.
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post #10 of 17 (permalink) Old 04-15-2019, 09:10 PM
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Good idea to check the center ball. Mine went bad but it had 650K miles on it.
He should be on warranty!!! and it is not normal.

99 2500, Quad cab, 4x4 47RE, BD pressure lock on it, small BD 90/140 chip on the VP 44 connection plug, 17" 3rd gen wheels. 3.55 diffs. Ruenell front bumper and warn winch, Rancho adj shocks. 663k miles.
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post #11 of 17 (permalink) Old 04-15-2019, 09:34 PM
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Quote:
Originally Posted by Boa550 View Post
If your taking it off, try to mark the orientation of the driveshaft to the axle and transfer case side flanges so you can get it back on how you took it off.
Unless they changed the design it only goes on 1 way and the shaft is never disassembled.

As for the vibration on some trucks and not others that is driving people crazy, pull one of those vibrators apart and measure the rods and pistons. The pistons seem to be pretty close but the cracked cap crap rods are absolutely terrible for consistent, anywhere from 40 to 60 grams difference. No wonder these thing shave terrible torsional harmonics that cannot be solved.

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post #12 of 17 (permalink) Old 04-15-2019, 11:30 PM
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Quote:
Originally Posted by Jhenderson View Post
The yokes need to be in the same plane or the joints will bind. There’s no problem removing the shaft as long as you don’t separate the shaft at the spline, then reassemble it out of phase. In this case, marking the shaft and case flange simply makes it easier to get the bolt pattern right the first time.
Thanks that the explanation.
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