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Suspension 4th Gen Dodge Ram Suspension Problems and Questions


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  #11  
Old 03-15-2012, 02:20 PM
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When i built my 1956 Chevy 1/2 pickup
I had to learn about drive shaft angle in relation to to the transmission output shaft & the pinion shaft.

The pinion shaft, for sake of reference, is parallel to the level surface, like your flat driveway, we can use 12" as a measurement from the ground to the pinion shaft
The transmission output shaft is also parallel to the same surface, but is a few inches higher from that surface, we can use 15" as the measurement from the ground to the transmission output shaft

when you install the drive shaft, with a universal at each end, the angle or incline the drive shaft has to make is the difference between 12" to 15", a difference of 3"

If you were to take a PITCH FINDER, that is used on roofs to measure the angle, & hold it on the drive shaft, it will give you the angle of the incline.
This angle of the drive shaft on a regular street vehicle has to be between 1/2 to 5 degrees, depending on the length of the drive shaft.
1/2 to 3 degree angle is preferred
If the angle is more than the preferred angle, you can loosen the rear differential support bolts & use special shims to bring it into tolerance.

WHAT CAUSES U-JOINT OPERATING ANGLES TO CHANGE

Suspension changes caused by: worn bushings in the spring hangers, worn bushings in the torque rods incorrect airbag height
Revisions in components of the driveline
Stretching or shortening the chassis
Adding an auxiliary transmission or transfer case in the main driveline
Worn engine mounts
Raising or lowering of the vehicle

High angles combined with high RPM is the worst combination, resulting in reduced u-joint life. Too large and unequal u-joint angles can cause vibrations and contribute to u-joint, transmission and differential problems. The improper u-joint angles must be corrected.

I hope that i didn't put you to sleep, but this is why the Dealership may deny your warranty claim
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Old 03-15-2012, 06:09 PM
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Well Daytona kind of made me think they could fix it, but your gearhead breakdown kind of lowered my spirits!

Regardless, the 60-70's GTX, Challenger R/T convertible, and shiny new red srt8 charger and yellow jacket challenger are distracting me from sadness!
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Old 03-15-2012, 06:26 PM
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Hopefully they will go ahead & honor the warranty, it is their option

I was just trying to explain in a rambling way, how it could have happened & why the dealer may decided against fixing it under warranty

Good Luck
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Old 03-15-2012, 08:17 PM
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I also hate too say it but didn't this cross your mind that they would bring the lowerin up? Its already in my head that I will fix anything wrong with my truck myself as long as its under a few hundred dollars. Anything that's a major problem I will be removing the lowering kit. I also think that I they put it in the computer and already contacted Chrysler then your most likely screwed because it's tagged by your vin #.
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Old 03-16-2012, 09:55 AM
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If you modify your vehicle you run the risk that it might void the warranty but the dealer is required to show the modification caused the problem.

So if you install a CAI it can't affect the warranty on the suspension but if you change something in the suspension they can easily claim it was you fault. Some dealers will work with you more than others but it is a risk.
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Old 03-16-2012, 05:21 PM
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It'll be fixed Monday, all in which dealership you take it to.
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Old 03-16-2012, 05:59 PM
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So what did you do?
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Old 03-16-2012, 07:22 PM
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Just took it to Daytona and it'll be fixed Monday. They don't understand why Beck didn't fix it. Honestly I don't think there ever was a problem with Chrysler because when I called them they hadn't gotten a report from Beck and were shocked they didn't tear my rear end down to diagnose the problem. I know people locally with drop shackles and torsion bar keys I there Chevy and never had a problem with rear ends breaking except for them being dumb rednecks.
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