GMC 15956509 Bar, Front Torsion

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To remove the torsion bar, first loosen the lug nuts of the front wheels and then lift up the car with jackstands. Take off the wheel and count how many threads are visible on the torsion bar adjuster bolt, indicating where he bolt is in relation to the nut for adjustment. Place a small push puller on dimple of adjuster arm and turn bolt until there is no tension, then remove adjusting nut. Note where torsion bar attaches to lower control arm and slide bar forward through arm until rear end clears cross member. Remove adjuster arm and pull down and back on torsion bar. If front of suspension hangs up in control arm, drive out with brass drift. Install by cleaning out lubricating hexagonal hole in control arm and greasing ends of torsion bars as well as adjuster arms and bolts. Ensure that marks match up correctly, tighten up the adjusting bolt so that equal number threads can be seen again. Measure clearance between arm and cross-member then set torsion bar accordingly as need arises. Put on wheel, let vehicle down while tightening lug nuts securely and finally find ride height at each side of vehicle's body before leveling it using torsion bars.

To remove the torsion bar, start by loosening the front wheel lug nuts and raising the vehicle onto jackstands. Remove the wheel and count the number of threads showing on the torsion bar adjuster bolt, marking the relationship of the bolt to the adjuster nut.

Before installing the torsion bar, you should clean and lubricate the hexagonal hole in the control arm. Additionally, apply grease to the torsion bar ends, adjuster arm, and bolt. Ensure alignment marks line up and tighten the adjuster bolt until the same number of threads are showing.

After tightening the adjuster bolt, you should measure the clearance between the arm and crossmember and adjust the torsion bar as necessary.