7) Now unbolt these by using a 18mm ratchet socket and 21mm closed end wrench as pictured below. FYI- Never hit a ratchet with a hammer... the internals will shatter.
8) After the 18mm bolt and 21mm nut are removed, Use your 18 mm ratchet socket to remove the 18mm bolt that holds the Rear Control Arm to the chasis. FYI- Its very very tight, try holding the ratchet on the bolt and sliding the closed-end of your 21mm wrench over the handle of the ratchet, Hold it firmly so the socket doesnt slip off the bolt and manage to get your foot on the wrench holding the ratchet and pull or push (depending on drivers side or passenger side Control Arm) until the 18mm bolt loosens enough so that you dont require the leverage of the wrench attached to the ratchet.
9) Once the 18mm bolt is removed, Slide the control arm out of the car. (Install in reverse order if replacing with OEM Control Arms, torque both bolts to 160NM / 118lb-ft. If installing Adjustables...Proceed to read rest of directions)...
Now place old control arm and new adjustable Control Arm side by side and slide one of the 18mm bolts through the Bearing Cartridge of the adjustable Control arm and into the Fork-End of the OEM Control Arm. Rotate the Adjustment bar on the Control arm until the other end of the Control Arm bolt holes light up perfectly. Once they line up, slide other other 18mm bolt through the other end to keep them from rotating anymore and make any other adjustments as needed.
10) Now tighten the Adjustment Lock Nut on the the Bearing Cartridge side of the Adjustable Control Arm AS TIGHT AS YOU CAN to prevent it from loosening. If it loosens, it wont fall off but it will rattle and you will have to remove the entire Control Arm and re-tighten the Adjustment Lock Nut again. DO NOT tighten the Lock Nut on the FORK-END. Also rotate the Bearing Cartridge in the same angle that the OEM was while still in the car like so.
(FYI The Adjustment nuts are larger than 1inch wrench so I used 2 Vise Grip Pliers to tighten the nut.)
