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2 piece driveshaft confusion.FIXED. Now, headlights #1743252
01/31/15 05:28 PM
01/31/15 05:28 PM
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On my 'new' '93 Dakota, its got a low speed vibration I'm trying to trace down. (Its not the tires for sure).

I went ahead and pulled the driveshaft assembly to check the u-joints and grease them.

According to info I pulled up on various websites, this assembly is NOT in phase because the yoke ears are not in the same plane.

Looks factory to me, what say you?





John

The dream is dead, long live the dream.......😥
Re: 2 piece driveshaft confusion....... [Re: SattyNoCar] #1743253
01/31/15 08:59 PM
01/31/15 08:59 PM
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Looks inline from here.

Re: 2 piece driveshaft confusion....... [Re: buildanother] #1743254
01/31/15 09:16 PM
01/31/15 09:16 PM
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That's in phase. I am not sure what years were involved but there was a TSB to replace the two piece style with a one piece. This was to eliminate a low speed vibration or shudder on acceleration. It was for 2wd models only if I remember correctly.

Re: 2 piece driveshaft confusion....... [Re: NITROUSN] #1743255
01/31/15 10:42 PM
01/31/15 10:42 PM
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Quote:

That's in phase. I am not sure what years were involved but there was a TSB to replace the two piece style with a one piece. This was to eliminate a low speed vibration or shudder on acceleration. It was for 2wd models only if I remember correctly.




Hmmmmm.....interesting. Wouldn't that make for one l-o-n-g driveshaft though?

Didn't find anything obviously wrong, so, I greased everything up and put it back in, and now the vibration is worse. Put everything back the way it was, didn't forget to tighten anything, the only difference is the fresh grease in the U-joints. At 35MPH, it now vibrates hard enough that the sun visors drop down a little.

Ran out of light tonite. Going to check things again tomorrow.



John

The dream is dead, long live the dream.......😥
Re: 2 piece driveshaft confusion....... [Re: SattyNoCar] #1743256
01/31/15 11:16 PM
01/31/15 11:16 PM
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Like I said I don't remember what years but it was a 2wd that the two piece was converted to a one piece. I think the problem is a tight joint and its right in front of your nose. Also double check the transmission mount. I don't know how you can say the shaft is out of phase as your picture clearly shows its in phase.

8414536-shaftinphase.JPG (49 downloads)
Re: 2 piece driveshaft confusion....... [Re: NITROUSN] #1743257
02/01/15 12:43 AM
02/01/15 12:43 AM
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In that aspect, yes it is in phase, BUT quite a few websites I visited took the reading off the yolks. Based on pics like the one I attached, the drive shafts are NOT in phase.

8414647-drive.jpg (144 downloads)

John

The dream is dead, long live the dream.......😥
Re: 2 piece driveshaft confusion....... [Re: SattyNoCar] #1743258
02/01/15 12:51 AM
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Quote:


In that aspect, yes it is in phase, BUT quite a few websites I visited took the reading off the yolks. Based on pics like the one I attached, the drive shafts are NOT in phase.




Your's is phased just like that one is. I don't get what you are looking at to be so confused?

Re: 2 piece driveshaft confusion....... [Re: SattyNoCar] #1743259
02/01/15 12:54 AM
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Being "in phase" and "in plane" are two different things.


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Re: 2 piece driveshaft confusion....... [Re: NITROUSN] #1743260
02/01/15 01:47 AM
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Quote:

Quote:


In that aspect, yes it is in phase, BUT quite a few websites I visited took the reading off the yolks. Based on pics like the one I attached, the drive shafts are NOT in phase.




Your's is phased just like that one is. I don't get what you are looking at to be so confused?




Yup, you're right. Just livin' up to my title I guess.... Blind Melon Chitlin



John

The dream is dead, long live the dream.......😥
Re: 2 piece driveshaft confusion....... [Re: SattyNoCar] #1743261
02/01/15 01:51 AM
02/01/15 01:51 AM
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Quote:

Quote:

Quote:


In that aspect, yes it is in phase, BUT quite a few websites I visited took the reading off the yolks. Based on pics like the one I attached, the drive shafts are NOT in phase.




Your's is phased just like that one is. I don't get what you are looking at to be so confused?





Yup, you're right. Just livin' up to my title I guess.... Blind Melon Chitlin







Funny. When you had the shaft out could you move the all the joints smoothly esp the front one?

Re: 2 piece driveshaft confusion....... [Re: NITROUSN] #1743262
02/01/15 02:05 AM
02/01/15 02:05 AM
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Funny. When you had the shaft out could you move the all the joints smoothly esp the front one?

Yes. That was part of the reason I did pull the whole assembly rather than grease it in place, I wanted to feel how smoothly the joints moved. All moved smoothly, none felt 'tight', none felt rough. They were all the same style aftermarket joint, so, I assume they were all changed at once, and not individually as they wore out.

Before I pulled the joint free from the rear, I marked it to be sure to put it back the same way too.



John

The dream is dead, long live the dream.......😥
Re: 2 piece driveshaft confusion....... [Re: SattyNoCar] #1743263
02/01/15 02:30 AM
02/01/15 02:30 AM
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garnett kansas
rhad Offline
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im fairly sure that the splines just behind the center bearing will only let the shafts fit together one way,how is the center bearing,smooth,ruff?


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Re: 2 piece driveshaft confusion....... [Re: rhad] #1743264
02/01/15 03:42 PM
02/01/15 03:42 PM
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Center bearing spins smoothly. Rubber around bearing is tight, NOT dry rotted, cracked, etc.


John

The dream is dead, long live the dream.......😥
Re: 2 piece driveshaft confusion....... [Re: SattyNoCar] #1743265
02/02/15 01:08 AM
02/02/15 01:08 AM
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Its Not a Keyed Spline. It can be put in anyway

Re: 2 piece driveshaft confusion....... [Re: 76dodgeboy] #1743266
02/02/15 02:52 AM
02/02/15 02:52 AM
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Quote:

Its Not a Keyed Spline. It can be put in anyway




I found out it is. So,no it can't.




John

The dream is dead, long live the dream.......😥
Re: 2 piece driveshaft confusion....... [Re: SattyNoCar] #1743267
02/02/15 05:33 AM
02/02/15 05:33 AM
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Mine wasn't

Re: 2 piece driveshaft confusion....... [Re: 76dodgeboy] #1743268
02/02/15 05:35 AM
02/02/15 05:35 AM
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My bad your Talking Dakota I'm talking full size.

Re: 2 piece driveshaft confusion....... [Re: 76dodgeboy] #1743269
02/02/15 09:10 PM
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Tossed a balance weight. Delt with that several times...

Re: 2 piece driveshaft confusion....... [Re: ruderunner] #1743270
02/02/15 09:56 PM
02/02/15 09:56 PM
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Quote:

Tossed a balance weight. Delt with that several times...




I had my mechanic look at it and thinks the same. There's no excessive slop anywhere, no obvious damage to either shaft.

So, now I gotta pull the unit again and get it balanced.



John

The dream is dead, long live the dream.......😥
Re: 2 piece driveshaft confusion....... [Re: SattyNoCar] #1743271
02/03/15 02:10 AM
02/03/15 02:10 AM
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if you can tell where the weight is missing from you can put a screw type hose clamp o the shaft with the screw head where the weight was,it will take some adjustment but it can be done,ive seen pictures of shafts with two clamps on them,or just take it to a drive-line shop for a perfect balance


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Re: 2 piece driveshaft confusion....... [Re: SattyNoCar] #1743272
02/03/15 05:27 PM
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Quote:

Hmmmmm.....interesting. Wouldn't that make for one l-o-n-g driveshaft though?




I'm wondering why you would say this.
How long can the Dakota be?
My full size pick up 1/2 ton is one piece. My C-bodies are as well.
I would think they would be longer than a Dakota.
Is it because the shaft is narrower?
Again not saying anyone is wrong, just wondering.



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Re: 2 piece driveshaft confusion....... [Re: SattyNoCar] #1743273
02/03/15 11:12 PM
02/03/15 11:12 PM
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You have weights on the shaft looking at the pictures. You wont notice a shaft balance at the low speeds so I highly doubt it is in the balance.

Re: 2 piece driveshaft confusion....... [Re: NITROUSN] #1743274
02/04/15 12:15 PM
02/04/15 12:15 PM
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"I'm wondering why you would say this. How long can the Dakota be?"

You question a guy that can't even interpret a drawing correctly? It just seems long to me being a Club Cab.


"You have weights on the shaft looking at the pictures. You wont notice a shaft balance at the low speeds so I highly doubt it is in the balance."

It shakes at all speeds really, but its no where near as pronounced as it is at 35MPH. If not the drive shaft, then what? Tires are balanced. Trans and motor mounts are good. Carrier bearing is good. I would think if something were wrong with the rear end it would show up as noise and not a vibration.

Either way, I took the drive shaft to a shop to have the balance checked.


John

The dream is dead, long live the dream.......😥
Re: 2 piece driveshaft confusion....... [Re: SattyNoCar] #1743275
02/04/15 02:58 PM
02/04/15 02:58 PM
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When you get it back together if it still shakes put the rear up on jack stands and have someone run it through the shakey speeds while you look at the wheels and driveshaft turning to see if you can see the problem. No need to throw money and parts at it without doing the basic diagnosis. If it doesn't shake then you have elimated the rear as the trouble area. Is the vibration in the seat of your pants or is it in the steering wheel? Why did you say it can't be the wheels and tires? Just because they are balanced doesn't mean they can't have a tread separation or a hard spot. Another thing you can do is jack the front up and try to move the wheels in and out top and bottom as well as side to side. That can show loose front end parts even wheel bearings.

Re: 2 piece driveshaft confusion....... [Re: stumpy] #1743276
02/04/15 04:25 PM
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I bought my Dak new in 04,,had that vibration 1 st day..brought it back 11 times the rep and dealer did everything including taking the complete unit out of another truck..Then the rep spoke to another old timer dealer and he said he could fix it and he did!!!..He put 2 hose clamps on the front of the rear shaft and for 150K miles it was perfect.. It just came back !!I at one time a few years ago while I was under the truck marked the clamps ,,and they have not moved.. I tried moving them around on the shaft, and it got worse..they are back to where they were...and vibration is getting worse every time I drive it..I am about to take it all apart..A local drive shaft shop said for $450.00 they will replace all the joints and center bearing and balance the whole set up.....I don't need them to change the u-joints but I'm at the end of my rope with this truck..

Re: 2 piece driveshaft confusion....... [Re: dynamite] #1743277
02/04/15 10:47 PM
02/04/15 10:47 PM
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SUCCESS!! Its S-M-O-O-T-H now.

The back shaft was ever so slightly bent. The shop straightened it, rebalanced it, and went ahead and put a new carrier bearing in (preventive maintenance while it was down).

Cost me just over $260.00. More than what I wanted to spend, BUT, it cured the problem.

Thanks for the replies everyone!

Now onto the next problem......headlights.


John

The dream is dead, long live the dream.......😥
Re: 2 piece driveshaft confusion....... [Re: SattyNoCar] #1743278
02/06/15 04:36 PM
02/06/15 04:36 PM
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To be honest I had to look long and hard at those pictures too.
Well at least it's done. $260.oo isn't bad.
Headlights... Oh Oh hope it's nothing serious.
I noticed the headlights on our minivan started dimming slightly on their own. It also stumbled a little at a stop light. I was thinking it was just salt corrosion on the wiring causing excessive resistance.
I cleaned everything I could see.
Battery is fully-charged so it isn't a charging issue.
I will watch your headlight post, and see what's up.
That's assuming you post it here.


I have mechanical Aptitude.
I can screw up anything.
Re: 2 piece driveshaft confusion.FIXED. Now, headlights [Re: bboogieart] #1743279
02/07/15 12:39 AM
02/07/15 12:39 AM
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I will watch your headlight post, and see what's up.
That's assuming you post it here.


Hmmm....not quite ready to make another post yet, but, here's an update.....

one of the previous owners was an idiot.

The amber parking lights were throwing more light than my headlights. Last night, I went out to see if I could somehow make the headlights 'work' until I spring for new lenses. With the headlights on, I opened the hood, and the engine compartment was BRIGHT, as in all lit up.....

At first I thought I was having a spiritual moment or something, but, then got to looking and realized the light was coming from the headlights.

The last idiot that replaced the bulb put the lock ring on backwards, so, rather than unplug the light and flip the ring, they tried to tape the bulb in place. Tried.

The bulb was still lined up with the hole in the housing but, the bulb was completely outside the housing! BOTH sides were like that.

While the light pattern and general output still sucks, I can actually see the road now that I put the bulbs back IN the housing.

As I mentioned, eventually I'll buy new lenses. Over on the www.dakota-durango.com website, a couple of guys recommended TYC brand for replacements.


John

The dream is dead, long live the dream.......😥
Re: 2 piece driveshaft confusion.FIXED. Now, headlights [Re: SattyNoCar] #1743280
02/07/15 01:13 AM
02/07/15 01:13 AM
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Grand Prairie,Texas
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If the lenses are plastic you can use toothpaste a rag and some elbow grease to make them clearer. Hit Ebay for reasonably priced replacements.

Re: 2 piece driveshaft confusion.FIXED. Now, headlights [Re: stumpy] #1743281
02/07/15 01:45 AM
02/07/15 01:45 AM
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I've got a Meguires kit I had bought for my Wife's Pontiac. Made a HUGE difference with that car. With the Dakota....mmmmmm...not so much.

The passenger side is yellowed/hazed to the point the plastic looks crazed. The drivers side housing is a replacement of unknown origin from when a previous owner smacked the left front corner.

The right lens throws out a weird, stick figure kinda pattern.... The drivers side has no pattern at all. When I shine the lights onto a wall, the drivers side appears as nothing more than a blob of light.



John

The dream is dead, long live the dream.......😥
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