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Model S Front Upper Control Arm DIY
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<blockquote data-quote="David.85D" data-source="post: 6278158" data-attributes="member: 54157"><p>I purchased the upper control arms (and fore links) from the service center and am getting ready to replace them, except I immediately ran into two hiccups. There is a bracket blocking me from removing the rear bolt on the UCA on the right side (where it attaches to the strut tower). I would like this mostly to be a DIY, and will post the steps if I can get past this, but interested to hear if anyone else has done this and how you got around 1) the bracket. </p><p></p><p>The front bolt also seems to hit the air spring but that is covered in the service manual (I have a copy of the service manual posted online) as you may have to remove the air spring module, but then that leads you to depressurizing the air spring using Toolbox, which I don't have. So, that was challenge #2 - Is it really neccesary to depressurize and remove the air spring module? </p><p></p><p>The car I'm working on is a 2014 P85D.</p><p></p><p>Here is the general process:</p><p></p><p>1) Position car, put it into jack mode but don't lift yet.</p><p>2) From inside Trunk, remove the underhood apron and lift up the rubber shock tower cover </p><p>3) Remove (disconnect?) the 12V auxillary battery </p><p>4) Lift the vehicle and safely support it (jack stands for me)</p><p>5) Remove the wheel and wheel arch liner</p><p>6) Disconnect the ride height sensor (air suspension) - two 10mm wrenches needed</p><p>7) Remove the air spring module if needed for access (really? hope not)</p><p>8) Remove the locknut and bolt that hold the upper control arm to the knuckle and seperate the arm- 15 mm wrench and torx T50 to counter-hold. Torque 60 N-m</p><p>9) Remove the rear bolt - 15 mm wrench - very confined space - I used a crowsfoot wrench on a breaker bar to get it started then a gearwrench ratcheting box end wrench. (bracket is in the way?)</p><p>10) Remove the front nut 15mm and 7mm wrench to counter-hold the bolt. The bolt went most of the way through, then hits the air spring...</p><p>11) Release the Upper Control Arm and remove it... I hope...</p><p></p><p>[ATTACH]751287[/ATTACH]</p></blockquote><p></p>
[QUOTE="David.85D, post: 6278158, member: 54157"] I purchased the upper control arms (and fore links) from the service center and am getting ready to replace them, except I immediately ran into two hiccups. There is a bracket blocking me from removing the rear bolt on the UCA on the right side (where it attaches to the strut tower). I would like this mostly to be a DIY, and will post the steps if I can get past this, but interested to hear if anyone else has done this and how you got around 1) the bracket. The front bolt also seems to hit the air spring but that is covered in the service manual (I have a copy of the service manual posted online) as you may have to remove the air spring module, but then that leads you to depressurizing the air spring using Toolbox, which I don't have. So, that was challenge #2 - Is it really neccesary to depressurize and remove the air spring module? The car I'm working on is a 2014 P85D. Here is the general process: 1) Position car, put it into jack mode but don't lift yet. 2) From inside Trunk, remove the underhood apron and lift up the rubber shock tower cover 3) Remove (disconnect?) the 12V auxillary battery 4) Lift the vehicle and safely support it (jack stands for me) 5) Remove the wheel and wheel arch liner 6) Disconnect the ride height sensor (air suspension) - two 10mm wrenches needed 7) Remove the air spring module if needed for access (really? hope not) 8) Remove the locknut and bolt that hold the upper control arm to the knuckle and seperate the arm- 15 mm wrench and torx T50 to counter-hold. Torque 60 N-m 9) Remove the rear bolt - 15 mm wrench - very confined space - I used a crowsfoot wrench on a breaker bar to get it started then a gearwrench ratcheting box end wrench. (bracket is in the way?) 10) Remove the front nut 15mm and 7mm wrench to counter-hold the bolt. The bolt went most of the way through, then hits the air spring... 11) Release the Upper Control Arm and remove it... I hope... [ATTACH]751287[/ATTACH] [/QUOTE]
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Model S Front Upper Control Arm DIY
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