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Old 12-21-2020, 03:05 AM   #1
Scott Turchin
 
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Default Vibration issue - Drive Train

SO I have this vibration issue, thought it was coming from the front end but alas my brother came over and gave a hand and I replaced drive shafts,U-joints (Front, back was done a few weeks ago) *and* the ball joints (1 WAS broken!) and we inspected the rest of the parts - had a broken upper ball joint so thought my problem was going to be gone.


But alas it is not. NOW you can feel it coming from the back.


We jacked up the truck (4WD) and when you rotate the tire you can hear SERIOUS slop in the differential. This coincides with my ABS light coming on a few months back, diagnosing that led to the conclusion that the internal spindal thing (Sensor) was bad. The sensor itself measures correct according to the manual.


Now, another issue i noticed a couple of years ago that I tested tonight that exists - if you put it in 4WD and back out, as soon as you turn the wheel it's like putting on the brakes, you go nowhere.....forward or backwards.


Transfer case? Transmission? Diff? I'm going to start by getting the diff rebuilt and then go from there but my heart sank tonight, all that work (and there were issues with those crappy Mogue parts, all ATM japanese now).


Help?
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Old 12-21-2020, 02:06 PM   #2
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An up-on-a-lift inspection is in order. The odds a great that a full, professional inspection will identify the main issue (failed front or rear diffy?), as well as many others I suspect. Sounds as if a major resto is needed, or a new truck ... :-{
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Old 12-21-2020, 06:47 PM   #3
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Have you checked your front wheel bearings for wear, tightness, or sloppiness?
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Old 12-21-2020, 11:35 PM   #4
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Have you checked your front wheel bearings for wear, tightness, or sloppiness?

Yep, replaced them and the seals last week, double checked yesterday, front end is like brand new, ball joints, etc (All Altrom parts now)




However this coincides with my ABS light turning on about 6 months ago, after diagnosing the inside part of the diff, figured I'd wait as that component is pricey....


I'm going to have Gears and Rears over in PO check it out.
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Old 12-30-2020, 03:25 AM   #5
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So..........


Replaced all ball joints, one on passenger side was broken.
Replaced front brakes and rotors (yet again, but with ATM (Japan)).


Balanced driveshaft.


Now the high frequency vibration is gone but there is still a low frequency vibration.
And I have fears that my cat may be going out, had to drive on the freeway before driveline balancing and it was sluggish adn running warm at 50mph...


Frack, one step at a time.

Tomorrow I will check the rear wheel bearings, just replaced them 8 months ago as well, brakes in back are good but my e-brake has been loose, maybe correlated...


D&D Drivelines in Port Orchard, man does Dan do some good work


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Old 12-30-2020, 02:10 PM   #6
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With it being sluggish, have you checked the timing? Should be 10 btdc
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Old 12-30-2020, 03:57 PM   #7
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Yup, looking back this started all about 8 months ago.
I suspect my cat converter is going out, and if it ever stops raining I will go pull it and check it. But a new one is only $180 and the truck is approaching 200k.


Strange that my daily driver is 25 years old....but it's cheaper to maintain and I don't have a payment
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Old 12-30-2020, 09:02 PM   #8
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OK so truck came to the shop and they conclusively diagnosed the output bearing on the transfer case is worn out. Is this a nightmare to change?
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Old 12-31-2020, 03:32 AM   #9
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SO what's involved with changing this bearing? Transfer case has to come out? Cover off from it? Or pop it off?


New bearing (Altrom) will be here tomorrow.


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Old 12-31-2020, 05:04 AM   #10
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No idea on that one, you may want to post a new thread with this in the title
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