[SOLVED] How-To: Lower Ball Joint Replacement - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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  #1  
Old 11-24-2010, 08:20 PM
the4biddendonut the4biddendonut is offline
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How-To: Lower Ball Joint Replacement

This How-To will show you how to use the Alltrade Tools Kit 46 Ball Joint/U Joint Service Set to replace your lower ball joints. It is important to use this tool kit because it is the only one that I have found to have the correct pieces. I will only cover the steps on how to press the ball joint in and out of the lower control arm, since getting to the ball joint has been covered in other threads.



The first step was to remove the crimps that ensure the ball joint stays in the knuckle. I used a cold chisel and a hammer to remove the lip.

Before:


After:



These are the pieces from the kit used to remove the old ball joint.




For some reason, GM decided to make the collar on the ball joint the same size as the outer radius of the lower control arm. This makes it impossible to use the 7 piece ball joint tool that most auto parts stores carry.

It's hard to see in the picture, but there are tabs on either side of the lower control arm that you place the receiver cup onto from the bottom.

Press the ball joint down as far as it will go.




Then, push it out the rest of the way with the C Clamp.




The ball joint pressed out.




I used these pieces to press the ball joint into the lower control arm. The way I used them was not the way they were intended to be used, but it worked.

Disclaimer: Don't come bitchin if something goes wrong or it doesn't work for you.






Install the snap ring.




Install grease fitting.



Lastly, enjoy saving hundred of dollars.
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  #2  
Old 11-24-2010, 11:05 PM
the4biddendonut the4biddendonut is offline
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Thanks Bill.
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  #3  
Old 01-17-2011, 01:21 PM
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What about when the lip the recieving cup sits on shears off?
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  #4  
Old 01-18-2011, 08:32 AM
the4biddendonut the4biddendonut is offline
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Are you talking about the wings on either side of the ball joint?



These sheared off?? This is what the receiver cup sat on when I did this.

I don't know how badly they're sheared off, but you could take a grinder to them and make the bottom sides flat again so your receiver cup doesn't slip off.
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Old 01-18-2011, 08:39 AM
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Cut right through one of the wings. I ended up finding an adaptor to stick the press on at a weird angle and get pressure then used a BFH after drilling some holes in the ball joint to relieve some side pressure. The BFH came in handy on extraction and install. Seemed that whenever the press got real tight, a whack of the hammer would straighten out any uneven pressure and allow me to crank some more. The 2nd side had no issue with the wings, so maybe it was a weak spot in the cast on mine.

Thanks for the pics and write-up. Really helped out.
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Old 01-18-2011, 08:41 AM
the4biddendonut the4biddendonut is offline
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Quote:
Originally Posted by hardtrailz400 View Post
Cut right through one of the wings.
Holy *****! That just goes to show how much pressure it takes to get these stupid ball joints out.

Glad to hear you got it done after all of that.
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Old 01-18-2011, 08:42 AM
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Prolly shoulda taken pics, but was pissed and it was spitting occasional sleet on me and I just wanted them done.
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  #8  
Old 01-18-2011, 09:41 AM
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Make the job easier.

Great write-up. I just went through this last weekend on my '02 Bravada. I used the tools in a similar fashion. When i did the left side, it took a LOT of pressure to break that joint loose. When it finally went, it sounded like a 44 going off. It moved over half way out in one shot. Consequently, I soaked the right side with a product called Aero Kroil. This is a penetrating fluid used in the aviation industry. I allowed this to soak for about half an hour and then pressed the joint out. It came out very easily. Huge difference. I use this stuff on everything.
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  #9  
Old 09-03-2011, 02:41 PM
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i borrowed the 21 piece power built kit and am going to attempt to change lower ball joints later this afternoon. im going to soak them with penetrating fluid for a couple of hours. im not sure if this will help tho. heres a lesson for any of you going to do any repairs on your vehicle that your not sure about-GO TO THE BEER STORE BEFORE STARTING! theres nothing worst than messing something up and getting pissed off and then finding out you have no beer in the fridge.
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  #10  
Old 09-03-2011, 04:59 PM
the4biddendonut the4biddendonut is offline
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I wish you luck. Just remember that the hard part is getting the old ball joint out, at least in my case.
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