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Old 04-27-2016, 10:32 AM   #1
3 Rivet Member
1996 30' Land Yacht
Benson , Arizona
Join Date: Feb 2016
Posts: 152
Upper Ball joint part numbers?

Just got to replacing the A-arms on our 96 LY30. Made the decision to replace the whole arms as it eliminated having to pull and replace the Ball Joints with those goofy special tools that I have no access to.

Got the new A-arm on the right installed, and started tightening the nut. It turned, and turned, and turned, and turned...

Seems someone, somewhere, decided to change the fricken TAPER on the Ball Joint. It is fully 1/8" smaller diameter, from top to bottom.

This is IDENTICAL (smaller Ball Joint shafts) on both the O'reilly's A-Arm on the right, and the MOOG A-Arm on the left; don't ask, that is another saga.

So. Has anybody seen this problem and solved it?
I am getting so tired of new parts being f'ckd up. On the MOOG A-Arm, the control rod bushings were also cross threaded. From the FACTORY!

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Old 04-27-2016, 10:56 PM   #2
3 Rivet Member
1996 30' Land Yacht
Benson , Arizona
Join Date: Feb 2016
Posts: 152
I posted this this am as I was looking for an answer in a hurry. Then spent some time at lunch calling around. Found a pair at our local Merles auto, a chain here in the Tucson area. $39.99 each, the world famous Mevotech brand - which some people like, and some don't, according to Uncle Google... MK6174

but they were in stock.

Got home, and started googling the part number. Found 'em on Rock Auto at $19.99 each, same brand, same part #.

Now I just have to drill out and then press out the too-small ball joints that cam on my new O'Reilly's and Moog upper A-arms, and install these. Good thing I have a money tree in the back yard, and all the time in the world...

I've now replaced most major systems in the last month or so: and fully 1/4-1/3 of the parts have been dead wrong. Last night I did a trip to O'Reillys - returned incorrect tie rod ends, lower ball joints that did not fit, and and an upper A-arm that was correct (except for the taper, that I discovered today), but was for the wrong side.

See if you can follow this: I originally ordered left and right uppers from MOOG - they sent 2 boxes, marked left and right. But in the left box was a right A-arm. They apparently had no lefts, and nowhere else on the Inet did as well. So I ordered a left from O'Reillys. Got it in a couple days, then opened it up to make sure it was correct. It matched the (2) right A-Arms from Moog . WTF???

After scratching my head awhile, figured it out. I was trying to order parts b4 pulling the old ones to save time. Big mistake on these coaches. After comparing all the A-arms with the coach, it turned out the MOOG factory parts listed on the "Suspension" site were reversed. So what I thought was actually the companion that I ordered from O'Reilly's (based upon the MOOG numbering system) was actually the fricken same!

I have never seen something so messed up.
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