Issues after new drive shaft install - Page 2 - JeepForum.com

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post #16 of 29 Old 08-19-2013, 12:08 PM Thread Starter
007_SuperCoupe
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Update:

After sending it back to the mechanic to insure there were no additional issues, it appears that the driveshaft is the source of the vibration. My thought is that the driveline repair shop didn't balance it for higher RPMs. The factory weights were not changed and no additional weights were added. My thoughts are that they balanced the shaft to about 50-55 mph and the driveline shop was not aware that I don't have selectable hubs. Next step is to take the driveshaft back to the shop and have them recheck the balance/trueness. I'm hoping it actually isn't bent...

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post #17 of 29 Old 08-19-2013, 12:33 PM
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I simply do not understand how a driveline shop would not high-speed balance any shaft. You don't have a rockcrawler here where your rpm's stay in the low range. That is pretty fundamental. Geez.

'02 WJ: 4.7L, 5", HP44/9", 231HD, tall & skinny KM2's
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post #18 of 29 Old 08-19-2013, 01:37 PM Thread Starter
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I know. It could be that one guy thought it was finished and it never actually got balanced...
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post #19 of 29 Old 08-19-2013, 01:53 PM
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Quote:
Originally Posted by 007_SuperCoupe View Post
I know. It could be that one guy thought it was finished and it never actually got balanced...
If all the factory weights are still on, then it was probably not balanced at all.

'02 WJ: 4.7L, 5", HP44/9", 231HD, tall & skinny KM2's
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post #20 of 29 Old 08-19-2013, 02:10 PM Thread Starter
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Fortunately the balancing is guaranteed. Just got to take it back in to the shop.
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post #21 of 29 Old 08-19-2013, 05:34 PM Thread Starter
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Double checked my receipt when I got home and there's no mention of balancing the driveshaft. I'm pretty confident that even after I specified that I wanted it balanced, they failed to actually balance it. Taking it in tomorrow. My biggest pet peeve is incompetence, so after I specifically asked about balancing the shaft, the "counter guy" told me that they would not guarantee it if I didn't get both ends rebuilt. He looked at the estimate they already worked up for me and saw that both the whole shaft was getting rebuilt, and told me I was good. Guess not...
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post #22 of 29 Old 08-20-2013, 11:12 AM Thread Starter
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I confirmed today that they did not balance the driveshaft. It will be balanced by COB today for free. I'm glad they are fixing the issue. Wish I didn't have to go through what I did to track down my issue, but this issue seems to be resolved. Now for the water pump that appeared to be leaking last night while removing the front driveshaft...
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post #23 of 29 Old 08-23-2013, 03:04 PM Thread Starter
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Final update:

Not only did they not balance the shaft, but they also did not check it for trueness. It was bent as well... 0.090" to be precise. Well, after a new tube for the driveshaft, it now drives wonderfully. Yes, I paid about $130 more than a remanufactured unit, but I also got a thicker shaft in the end. It should be able to stand up to more abuse than the front D30 can handle. Now if only I could find some reasonably priced JK D44s, I'd be set... Well, as far as the driveline is concerned at this point...
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post #24 of 29 Old 08-23-2013, 03:12 PM
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Glad it worked out well. I'd avoid that shop next go round.

'02 WJ: 4.7L, 5", HP44/9", 231HD, tall & skinny KM2's
Half-Ton axle swap guide
231HD build info

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post #25 of 29 Old 08-23-2013, 04:08 PM Thread Starter
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I think they made it right. They dropped the labor cost a lot because the goofed it up the first time. I think they are so used to local businesses that when a guy off the street walks in they might goof it up. Basically what happened is the guy who does the work came to the counter and told me all that they would do, but then they guy who works at the counter didn't get it all on the work order. A week later when they got to my driveshaft, they only did what was on the work order.

My opinion, they made it right by admitting they messed up and didn't charge me for more than it would cost to do it all at once. This time around I basically paid for the tube for the shaft and that was it. Even though I had trouble, I'd still go back here if I need a new rear shaft, axles built or anything else driveline related.
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post #26 of 29 Old 08-23-2013, 11:26 PM
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Hey guys.. I just installed mine tonight.. I did the ZJ to WJ conversion as well. When I went to install the new Yoke that I got through Kolak I noticed that the new one didn't have the seal flange on it like the old one did. Does that matter? Will it seal up properly? Should my TC have drained onto the floor when I took off the old one? Sorry to steal your thread here, but it looked like someone here might have the answer.
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post #27 of 29 Old 08-23-2013, 11:29 PM
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This is the old one..

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post #28 of 29 Old 08-23-2013, 11:48 PM
MadMonk
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That flange doesn't seal, its more of a dust shield. You should be fine.

'99 WJ Limited 4x4, 4.0L, Patriot Blue Metallic, IRO 3" springs, track bar, and rear sway bar links, Doetsch Tech 8000 shocks, Tenneco steering stabilizer, Carolina Driveline double-cardan front drive shaft.
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post #29 of 29 Old 08-24-2013, 10:06 AM
MuddyWJ
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That's weird the one I got from kolak had the shield.
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