Vibrations and shuttering when turning - Dodge Cummins Diesel Forum
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post #1 of 12 (permalink) Old 06-29-2014, 03:58 PM Thread Starter
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Vibrations and shuttering when turning

I have had this problem for awhile amd I think its time i finally try to figure this out. I for the life of me cannot figure out why I have so much vibration and noise when I am turning on paved roads at slow speeds, like turning at a stop sign. I feel it everywhere and the gf even commented that it feels worse. It almost feels like my tires have "too" much traction. Its making me wonder if my axles are in need of a rebuild, king pins are just so rotted or warn out, or that its just the tires. I rebuilt he front hubs a year ago, no change.


1993 W250 ext cab a518 (Revmax t/c) 4.10, 366 spring; timing bump; Red Head steering gear w/ Dodge Connection brace, bhaf, DAP 5x12 sac injectors

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post #2 of 12 (permalink) Old 06-29-2014, 08:06 PM
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Have you inspected the knuckle U-joints lately? When you rebuilt the hubs, did you pull the spindle and inspect the outer axle shaft inner roller bearing?

91 W350 SRW, 3.07's w/LSD, NV4500, 2nd gen IC, 370's, HX40
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post #3 of 12 (permalink) Old 06-29-2014, 09:37 PM Thread Starter
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When i rebuilt the hubs i just pulled them off cleaned everything and replaced all ghe races and bearings in the hub. I never pulled the shaft because the ujpints were fine

1993 W250 ext cab a518 (Revmax t/c) 4.10, 366 spring; timing bump; Red Head steering gear w/ Dodge Connection brace, bhaf, DAP 5x12 sac injectors
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post #4 of 12 (permalink) Old 06-29-2014, 10:30 PM
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Your u-joints might be chewed up internally and still be tight.

The bearing assembly of the u-joint may have notches instead of a smooth surface. As the u-joint is forced to work during a turn this idea would make sense. Picture the needle bearings in a case that has cutouts the same size as the needles. When you turn the needle falls into the groove nicely. Then when the needle hits the uphill part of a groove it struggles to go over that hump. That would make a jerking and a vibration.

Naturally this can happen to any bearing. It is not just limited to u-joints.

I would tend to rule out the tires. They should not be a cause of noise at low speeds.

1997 3500 club cab 3.54 gears towing & camper pkg. Still stock with a built transmission at 120k. 4" exhaust, 4kgsk, and exhaust brake waiting for installation. 37337 upgrade. Still need ideas for improvements for hauling 15k fifth wheel.

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post #5 of 12 (permalink) Old 06-30-2014, 01:36 PM
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Mine used to feel like it was in 4WD when making sharp turns on the road. Changed joints and it was gone. It made a world of difference. Especially while towing during low speed turns.

93 W250 4x4 G360; VE w/std mods; KDP killed; Hydroboost brakes; ⅛" bump; HX35 @31psi; 4" TBE; PSD IC w/custom 3" piping; Bosch190's; Custom fuel pin; LED's all around; boost, pyro, tach, oil pressure, water temp & digital volt gauges
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post #6 of 12 (permalink) Old 06-30-2014, 02:38 PM Thread Starter
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Quote:
Originally Posted by country_hick View Post
Your u-joints might be chewed up internally and still be tight.

The bearing assembly of the u-joint may have notches instead of a smooth surface. As the u-joint is forced to work during a turn this idea would make sense. Picture the needle bearings in a case that has cutouts the same size as the needles. When you turn the needle falls into the groove nicely. Then when the needle hits the uphill part of a groove it struggles to go over that hump. That would make a jerking and a vibration.

Naturally this can happen to any bearing. It is not just limited to u-joints.

I would tend to rule out the tires. They should not be a cause of noise at low speeds.
That makes a ton of sense, especially since just about every ujoint I have done has been gnarled up just like you described. Ill be alone on the 4th, so this will be my project.

Any advice on pressing those ujoints out, I always use a ball joint press.

1993 W250 ext cab a518 (Revmax t/c) 4.10, 366 spring; timing bump; Red Head steering gear w/ Dodge Connection brace, bhaf, DAP 5x12 sac injectors
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post #7 of 12 (permalink) Old 06-30-2014, 04:05 PM
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Quote:
Originally Posted by peckens View Post
That makes a ton of sense, especially since just about every ujoint I have done has been gnarled up just like you described. Ill be alone on the 4th, so this will be my project.

Any advice on pressing those ujoints out, I always use a ball joint press.
I use a bearing press but it can be done with a decent bench vise. Ball joint press should do the trick.

93 W250 4x4 G360; VE w/std mods; KDP killed; Hydroboost brakes; ⅛" bump; HX35 @31psi; 4" TBE; PSD IC w/custom 3" piping; Bosch190's; Custom fuel pin; LED's all around; boost, pyro, tach, oil pressure, water temp & digital volt gauges
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post #8 of 12 (permalink) Old 06-30-2014, 05:14 PM Thread Starter
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I just jacked up thenfront end and locked the hubs. The d/s was relatively easy to turn with the wheel straight or turned. The P/s was not, infact it turned with quite alot of resistance. I then lowered the truck back on the ground and drove it back and forth with the wheels turned. I noticed a slight popping when the wheels were turned and moving forward only. Im pretty convinced at this point it is a ujoint.

1993 W250 ext cab a518 (Revmax t/c) 4.10, 366 spring; timing bump; Red Head steering gear w/ Dodge Connection brace, bhaf, DAP 5x12 sac injectors
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post #9 of 12 (permalink) Old 06-30-2014, 09:42 PM
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My u-joints always got beaten out with a hammer. I am not saying it is the best way but I have no press.

1997 3500 club cab 3.54 gears towing & camper pkg. Still stock with a built transmission at 120k. 4" exhaust, 4kgsk, and exhaust brake waiting for installation. 37337 upgrade. Still need ideas for improvements for hauling 15k fifth wheel.
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post #10 of 12 (permalink) Old 07-01-2014, 07:52 AM
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Make sure it isn't in 4X4.

1998 2500 4X4. built my own automatic. Built my own engine too.
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post #11 of 12 (permalink) Old 07-01-2014, 03:25 PM
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Yup sure sounds liker a bad U-joint on the front drive axle.

I do U-joints with a couple sockets (couple big, and small) and a hammer. Never had an issue.

1984/93 Dodge Crewcab, W350, 1 Ton SRW, long box, 350K Km's, hydroboost, 366 spring, fuel pin to deep side, 14cm housing, Piston LP, PS IC, Isspro Boost, Pyro and tach, NV4500, 29 spline NP205, 3.54's.
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post #12 of 12 (permalink) Old 07-01-2014, 06:53 PM Thread Starter
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Pulling the shaft on the ps tonight. I picked up new ujoints and a spindle bearing and seals just in case. Ill let you guys know how it turns out.

1993 W250 ext cab a518 (Revmax t/c) 4.10, 366 spring; timing bump; Red Head steering gear w/ Dodge Connection brace, bhaf, DAP 5x12 sac injectors
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