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New ball joints worn out after 5 months?

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Old 10-20-2016, 02:14 PM
  #21  
irv
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Originally Posted by millball
Did you supply the serial number of your truck to the Toyota dealer??

The vin number is the last word on what parts the factory built your truck with.
No. I entered the Make, Model Year, Model and so forth into oempartsource.com and bought the left and right lower ball joint that were shown.

This is how they are described on the site:
43340-39175
BALL JOINT, LEFT 1986-88 W/4WD

43330-39195
BALL JOINT, RIGHT 1986-88 W/4WD

Last edited by irv; 10-20-2016 at 02:21 PM.
Old 10-20-2016, 02:24 PM
  #22  
irv
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Originally Posted by 89fourrunner
Another huge point I forgot to mention: There are two lower ball joint part numbers. Somewhere in 1988 (I think) they changed the design of the lower control arm. So when you order your balljoints ensure you get the correct ones. One is shorter than the other. It can limit travel and they can wear out fast.

There is a detailed post from another user with pictures of the control arm differences and ball joint differences, maybe you can find it.
Also, it's interesting that you say this because after I replaced all four ball joints back in April with the Moog ones, the truck suddenly had pretty drastic positive camber. It didn't make much sense to me and I am now wondering if it's because the lower ball joints that I had were designed for an 88+ and were either smaller or bigger than the correct ball joints and through the camber off. Really wishing I hadn't tossed the original ball joints. I would just remove the plugs, install grease zerks, lube em up and reinstall them.

Last edited by irv; 10-20-2016 at 02:25 PM.
Old 10-20-2016, 03:18 PM
  #23  
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Through 3/1989 (up until) has a lower ball joint with a flush ball.
From 4/1989 (this date for 1st gen production and into the 2nd gens) have a lower ball joint with a raised socket.

I guess technically if you installed a raised socket ball joint, it would push the lower control arm farther away from the upper, which would pull the inside of the wheels inward....creating positive camber. BUT< please please please do not quote me on that, I am just guessing about that because you said the camber drastically changed.

Check your manufacturing date sticker. Good part companies (aftermarket) sell both types of lowers. And of course, so does TOYOTA.

But do check your static ride height, and also check those shocks.
Old 10-20-2016, 05:49 PM
  #24  
irv
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Originally Posted by 89fourrunner
Through 3/1989 (up until) has a lower ball joint with a flush ball.
From 4/1989 (this date for 1st gen production and into the 2nd gens) have a lower ball joint with a raised socket.

I guess technically if you installed a raised socket ball joint, it would push the lower control arm farther away from the upper, which would pull the inside of the wheels inward....creating positive camber. BUT< please please please do not quote me on that, I am just guessing about that because you said the camber drastically changed.

Check your manufacturing date sticker. Good part companies (aftermarket) sell both types of lowers. And of course, so does TOYOTA.

But do check your static ride height, and also check those shocks.
I have to agree with you that my torsion bars are adjusted a bit too tightly. I checked and the upper control arms are almost touching the bump stops. I will adjust them back down a little bit. However, the truck had been this way for nearly 2 years and the 30 year old ball joints were still just fine. The Moog ball joints lasted barely 5 months.
Old 10-20-2016, 05:57 PM
  #25  
irv
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Also, I've verified that I did have the correct Moog lower ball joints installed. MOOG K9519 are the lower ball joints for 89+ and MOOG K9587 are for 86-88, which are the ones I had.
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