Lower Control Arm & Torsion Bar
PICKUP & 4RUNNER W/2 WHEEL DRIVE1. Raise and support vehicle.
Fig. 17 Front suspension. Pickup & 4Runner w/2 wheel drive:
2. Remove torsion bar boots, then place alignment mark across torsion bar, anchor arm and torque arm, Fig. 17.
3. Remove locknut from torsion bar adjusting bolt and measure height of exposed bolt end. Record this value for reference when adjusting vehicle height.
4. Loosen adjusting nut, then remove anchor arm and torsion bar from vehicle.
5. Disconnect stabilizer bar end from lower suspension arm.
6. Disconnect strut bar end from lower suspension arm.
7. Remove shock absorber, refer ``Shock Absorber, Replace.''
8. Remove bolts securing lower ball joint to lower suspension arm, then separate ball joint from suspension arm.
9. Remove lower arm shaft nut, torque arm and lower arm shaft from lower arm, then remove lower suspension arm.
10. To install lower suspension arm, reverse steps 1 through 9 above. To install torsion bar, follow remaining steps below.
11. If original torsion bar is to be installed, apply suitable grease to splines, then align marks made during removal and install torsion bar. Check to ensure that adjusting bolt protrusion is equal to value obtained prior to removal of torsion bar.
12. If new torsion bar is to be installed, position block of wood 7.09-7.87 inches (180-200 mm) under front tire on side of vehicle from which torsion bar was removed.
Fig. 18 Positioning front suspension for torsion bar replacement. Pickup & 4Runner w/2 wheel drive:
Fig. 19 Measuring torsion bar adjusting bolt height dimension A. Pickup & 4Runner w/2 wheel drive:
Fig. 20 Measuring torsion bar adjusting bolt height dimension B. Pickup & 4Runner w/2 wheel drive:
13. Lower vehicle unit clearance between spring bumper on lower arm and frame is .051 inch (13 mm), Fig. 18. Install anchor arm onto torsion bar until adjusting bolt protrusion dimension A is .31-1.10 inch (8-28 mm), Fig. 19, on 1/2 ton models or .43-1.22 inch (11-31 mm) on 3/4 ton and Cab and Chassis models. Remove wooden block, then tighten adjusting nut until bolt protrusion dimension B, Fig. 20, is 2.72-3.50 inches (69-89 mm).
14. Install torsion bar boots and locknut, then torque locknut to 51-65 ft. lbs. (7-9 kg-m). Torque lower suspension arm shaft nuts to 145-216 ft. lbs. with vehicle suspension loaded.