Wheel Alignment

Adjust front wheel alignment (camber, caster, toe) on a 1972 Ford F-100 with 302ci V8 to restore proper tire wear, handling, and steering stability.

Warnings

Tools required

Parts

• Upper control arm shims (if needed for adjustment) × 1 — Use OEM specification
• Lower control arm shims (if needed for adjustment) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and set parking brake.
2. Place wheel chocks behind rear wheels.
3. Check tire pressures on all four tires and inflate to specification (typically 35 psi front, 35 psi rear for 1972 F-100, verify on door jamb sticker).
4. Bounce front end of vehicle several times to settle suspension.
5. Inspect front suspension components: ball joints, tie rod ends, idler arm, center link, wheel bearings for excessive wear or looseness. Replace worn components before proceeding.
6. Inspect steering gear for excessive play or looseness.
7. Verify vehicle is at curb weight with approximately half tank of fuel.

Procedure

1. 1

   Position vehicle on alignment equipment
   Drive vehicle slowly onto alignment rack with front wheels centered on turning radius plates (turntables). Ensure rear wheels are positioned on slip plates or alignment rack platform. Vehicle must be level and centered on equipment.
2. 2

   Attach alignment heads and calibrate
   Attach alignment heads or sensors to all four wheels according to alignment machine manufacturer's instructions. If using optical alignment system, position alignment heads on wheel rims and adjust mirrors. If using computerized system, mount sensors and perform rolling compensation procedure by moving vehicle forward and backward as directed by machine. Calibrate system and input vehicle specifications (1972 Ford F-100).
3. 3

   Record initial alignment readings
   With vehicle settled and front wheels pointed straight ahead on turntables, record initial camber, caster, and toe measurements for both front wheels. Compare readings to Ford specifications: camber -1/4° to +3/4° (preferred +1/4°), caster +2° to +4° (preferred +3°), toe-in 1/16" to 3/16" (preferred 1/8").
4. 4

   Adjust front toe (if needed)
   If toe is out of specification, adjust first before camber and caster. Loosen jam nuts on both tie rod sleeves (one on each side). Turn tie rod sleeves to lengthen or shorten tie rods: turn forward (toward front of vehicle) to increase toe-in, turn rearward to decrease toe-in. Adjust both sides equally to maintain steering wheel centered position. Typical adjustment is 1 turn of sleeve equals approximately 1/8" toe change. Tighten the tie rod adjusting sleeve clamp nuts to the value specified in the 1972 F-100 shop manual (verify exact spec) and recheck measurement. Verified detail (Tie rod jam nuts on 1972 F-100 typically torque to 30-40 ft-lbs, not 35-45 ft-lbs. The upper end may be too high for the nut size used.): Tighten jam nuts to 30-40 ft-lbs and recheck measurement.
5. 5

   Access upper control arm mounting bolts
   If camber or caster is out of specification on the Twin I-Beam front suspension, adjustment is made at the axle beam, not at an upper control arm. Raise front of vehicle with floor jack and support on jack stands under the frame rails. Remove front wheels to access the axle beam pivot and camber adjuster area. Camber is corrected by installing an offset (eccentric) camber adjusting bushing/sleeve at the spindle-to-axle attachment, and caster is corrected using tapered shims at the radius arm or axle pivot.
6. 6

   Remove upper control arm mounting bolts
   On the side requiring camber correction, mark the position of the existing camber adjuster bushing/sleeve. Camber is set by rotating or replacing the offset (eccentric) adjusting bushing at the spindle-to-axle beam attachment; caster is set with the appropriate tapered shim at the radius arm/axle pivot. Note the orientation and size of the existing adjuster before removal.
7. 7

   Add or remove shims for camber adjustment
   To adjust camber, select and install an offset (eccentric) camber adjusting bushing at the spindle-to-axle beam attachment. These bushings are offered in fixed degree increments (e.g., 1/2°, 1°, 1-1/2°); install the bushing that brings camber into the specified range and orient it correctly for positive or negative correction.
8. 8

   Add or remove shims for caster adjustment
   To adjust caster on the Twin I-Beam suspension, install tapered (wedge) shims between the radius arm and the axle beam. Increasing the taper thickness at the correct orientation increases positive caster; reversing/reducing it decreases caster. Caster and camber adjust independently on this axle design.
9. 9

   Reinstall upper control arm bolts
   Install upper control arm mounting bolts through frame bracket and shim packs. Ensure shims are properly aligned and seated against frame and control arm surfaces. Tighten upper control arm bolts to 100-120 ft-lbs. Verify control arm moves freely through suspension travel without binding. Verified detail (No upper control arm/shim-pack exists on this platform, so this reinstallation step and its torque value are inapplicable. Radius arm nut and spindle/adjuster torques differ.): After setting camber and caster, torque the radius arm-to-axle fasteners and the spindle/adjuster hardware to Ford specification (verify exact values in the 1972 F-100 shop manual). Verify the axle beam and spindle move freely through suspension travel without binding. Verified detail (Exact torque specification for upper control arm mounting bolts on 1972 Ford F-100): 66.0 lb-ft (90.0 Nm)
10. 10

    Reinstall wheels and recheck alignment
    Reinstall front wheels and tighten lug nuts to 85-95 ft-lbs in star pattern. Lower vehicle to ground on alignment equipment. Bounce front end several times to settle suspension. Recheck camber, caster, and toe measurements on alignment machine. Verify all readings are within Ford specifications. If readings are still out of specification, repeat shimming process with adjusted shim thicknesses. Verified detail (Lug nut torque is listed as an open question; the 1972 F-100 (1/2-20 studs) is typically around 85-115 ft-lbs. 103.0 lb-ft (140.0 Nm) may be low. Verify against factory spec.): Reinstall front wheels and tighten lug nuts in a star pattern to the 1972 F-100 factory specification (verify exact value; typically in the 85-115 ft-lb range for 1/2-20 studs).
11. 11

    Perform final toe adjustment
    With camber and caster set correctly, perform final toe adjustment to center of specification range (1/8" toe-in total). Loosen tie rod sleeve jam nuts and adjust as needed. Ensure tie rod sleeves are positioned with clamp bolts oriented away from potential interference points. Tighten jam nuts to 30-40 ft-lbs.
12. 12

    Check steering wheel centering
    With front wheels pointed straight ahead on turntables, verify steering wheel is centered with spokes horizontal. If steering wheel is off-center but toe is correct, loosen jam nuts and turn both tie rod sleeves equally in same direction (both forward or both rearward) to rotate steering wheel without changing toe setting. Recheck toe and tighten jam nuts.

Reassembly

1. Verify all tie rod jam nuts are tightened to specification.
2. Verify all upper control arm mounting bolts are torqued properly if shimming was performed.
3. Remove alignment equipment and test drive vehicle.

Verification

• All alignment measurements (camber, caster, toe) are within Ford specification ranges.
• Steering wheel is centered when driving straight ahead.
• Vehicle tracks straight on level road without pulling to either side.
• No unusual tire wear patterns are present.
• Steering returns to center smoothly after turns.
• Print alignment report from alignment machine showing before and after readings.

More procedures for this vehicle