Models With Coil Springs
Caster is built-in at factory and no adjustment is provided. If not within limits, replace parts as required.
Models With Leaf Springs
- Caster angle is adjusted by inserting a shim between the spring and axle. Shims are available in 0°, 1° and 2° increments. If possible, caster adjustment should always be done on right front axle to avoid changing from driveshaft alignment.
- To adjust caster, raise vehicle and support front axles on safety stands. Loosen "U" bolt nuts and spring from axle. Install caster shims between spring and axle.
- Position thin edge of shim toward front of vehicle to increase caster, thin edge toward rear of vehicle to decrease caster. After alignment tighten "U" bolt nuts to 105 ft. lbs. (142 N.m).
Note. Caster shims installed on left axle will change front driveshaft angle. If shims are used on left axle, drive shaft angle must be checked. Correct side-to-side caster variations by adjusting right axle caster.
CAMBER
The forged twin "I" beam suspension design used on F250/350 2WD models has camber angle built-in at factory and no adjustment is provided. If not within limits, replace parts as necessary.
Bronco & F150/250/350 4WD
- Camber angle is built into axle and no adjustment is necessary under normal loading conditions. For unusual loading conditions, adjustments can be made by a series of interchangeable sleeves. (Scheme 1)
- Sleeves are available in 4 ranges of 1/2° increments from 1 1/2° negative to 1 1/2° positive. Sleeves are installed on threaded end of upper ball joint.
Installing Camber Adjustment Sleeve. Scheme 1
Scheme 1: Installing Camber Adjustment Sleeve
F150 2WD
- Raise vehicle on hoist. Remove front wheel assemblies. Remove upper ball joint nut. Remove cotter pin on lower ball stud. Back nut down to end of stud.
- Strike spindle near upper and lower ball joints to break spindle loose from ball joint studs. Use Camber Adjuster Remover (D81T-3010-B) to wedge camber adjuster out of spindle.
- Replace adjuster with desired camber adjuster. Camber adjusters are available in 0°, 1/2°, 1° and 1 1/2°.
- To increase camber (more positive), align slot as follows: On drivers side, point slot rearward. On passenger side, point slot forward.
- To decrease camber (more negative), align slot as follows: On drivers side, point slot forward. On passenger side, point slot rearward.
- Apply Loctite or equivalent to upper ball stud and hand start upper ball stud. Hand start lower ball nut. Partially tighten lower ball stud nut to 35 ft. lbs. (47 N.m). Tighten upper ball stud to 85-110 ft. lbs. (115-150 N.m).
- Finish tightening lower ball stud to 104-146 ft. lbs. (141-198 N.m). Advance nut to the next castellation and install cotter pin. Install front wheel assemblies and lower vehicle.
Camber Adjustment Adjust using upper ball joint mounting sleeves. Scheme 2
Scheme 2: Camber Adjustment Adjust using upper ball joint mounting sleeves.
TOE
- Loosen adjusting sleeve clamp bolts on each end of tie rod (left side only on "E" series). Rotate sleeve(s) until correct toe alignment is obtained.
- With clamps 3/16" (5 mm) from end of sleeve on 4WD models, position clamp bolts horizontally and with nuts toward front (rear) of vehicle. (Scheme 3) Tighten sleeve to 35 ft. lbs. (47 N.m).
- With clamps centered between the adjustment sleeve lock ring nibs on all other models, position clamp bolts horizontally (vertically) and with nuts pointing downward or toward front (rear) of vehicle. Tighten sleeve to 35 ft. lbs. (47 N.m).
Toe Adjustment Sleeve Clamp Positions. Scheme 3
Scheme 3: Toe Adjustment Sleeve Clamp Positions
F Series
- All F series models have built in steering stops which cannot be altered. E250/350 models have non-adjustable steering stop pins which are pressed into axle. These pins are matched to tire size and may require replacement if tire size is changed.
- F150/250/350 4WD models use a welded screw and lock nut which is not adjustable. A spacer cap is used with wide tread tires on F150.
| Application | Kingpin | Ball Joint |
| F150 | 36.8° | 36.8° |
| F250/350 | 35.0° | 35.0° |
| F150 4WD | N/A | (1) 36° |
| F250 4WD (2) | N/A | 33.4° |
| F350 4WD | N/A | 30.3° |
| (1) 34.0° with 10 X 15 size tires. (2) 30.3° for F250 4WD Heavy Duty trucks. |
| (1) | 34.0° with 10 X 15 size tires. |
| (2) | 30.3° for F250 4WD Heavy Duty trucks. |
TURNING ANGLE SPECIFICATIONS
| Axle Gap (Inches) (1) | Specification |
| 3 1/4 to 3 1/2 |
| Caster (Degrees) | 5 to 6 |
| Camber (Degrees) | 3/4 to 1 1/2 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 13 |
| 3 1/2 to 4 |
| Caster (Degrees) | 4 1/4 to 5 1/4 |
| Camber (Degrees) | 1/4 to 2 1/2 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 13 |
| 4 to 4 1/4 |
| Caster (Degrees) | 3 1/4 to 4 1/4 |
| Camber (Degrees) | 1 to 3 1/2 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 13 |
| 4 1/4 to 4 3/4 |
| Caster (Degrees) | 2 1/2 to 3 1/2 |
| Camber (Degrees) | 2 to 4 1/4 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 13 |
| (1) Axle gap is distance measured from top of axle tube to bottom of spring tower at center front face of jounce stop. |
| (1) | Axle gap is distance measured from top of axle tube to bottom of spring tower at center front face of jounce stop. |
WHEEL ALIGNMENT SPECIFICATIONS - F150 2WD
| Axle Gap (Inches) (1) | Specification |
| 2 1/2 to 2 7/8 |
| Caster (Degrees) | 5 to 6 |
| Camber (Degrees) | 3/4 to 1 3/4 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 8 |
| 2 7/8 to 3 1/4 |
| Caster (Degrees) | 4 1/4 to 5 1/4 |
| Camber (Degrees) | 0 to 2 1/2 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 8 |
| 3 1/4 to 3 5/8 |
| Caster (Degrees) | 3 1/4 to 4 1/4 |
| Camber (Degrees) | 1 to 3 1/4 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 8 |
| 3 5/8 to 4 |
| Caster (Degrees) | 2 1/2 to 3 1/4 |
| Camber (Degrees) | 2 to 4 1/4 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 8 |
| (1) Axle gap is distance measured from top of axle tube to bottom of spring tower at center front face of jounce stop. |
| (1) | Axle gap is distance measured from top of axle tube to bottom of spring tower at center front face of jounce stop. |
WHEEL ALIGNMENT SPECIFICATIONS - F250/350 2WD
| Axle Gap (Inches) (1) | Specification |
| 3 1/4 to 3 1/2 |
| Caster (Degrees) | 6 to 7 |
| Camber (Degrees) | 1 to 1/2 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 13 |
| 3 1/2 to 4 |
| Caster (Degrees) | 5 to 6 |
| Camber (Degrees) | 1/2 to 1 1/2 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 13 |
| 4 to 4 1/4 |
| Caster (Degrees) | 4 to 5 |
| Camber (Degrees) | 1/4 to 2 1/2 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 13 |
| 4 1/4 to 4 3/4 |
| Caster (Degrees) | 3 to 4 |
| Camber (Degrees) | 1 1/4 to 3 1/2 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 13 |
| (1) Axle gap is distance measured from top of axle tube to bottom of spring tower at center front face of jounce stop. |
| (1) | Axle gap is distance measured from top of axle tube to bottom of spring tower at center front face of jounce stop. |
WHEEL ALIGNMENT SPECIFICATIONS - F150 4WD & BRONCO
| Axle Gap (Inches) (1) | Specification |
| 5 to 5 1/2 |
| Caster (Degrees) | 3 to 5 1/8 |
| Camber (Degrees) | 1 3/4 to 3/4 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 13 |
| 5 1/2 to 6 |
| Caster (Degrees) | 3 1/8 to 5 1/4 |
| Camber (Degrees) | 3/4 to 1 3/4 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 13 |
| 6 to 6 1/4 |
| Caster (Degrees) | 3 1/4 to 5 3/8 |
| Camber (Degrees) | 1/2 to 2 3/4 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 13 |
| 6 1/4 to 6 3/4 |
| Caster (Degrees) | 3 1/2 to 5 1/2 |
| Camber (Degrees) | 1 1/2 to 4 |
| Toe-in (Inches) | 1/32 |
| Steering Axis Inclination (Degrees) | 13 |
| (1) Axle gap is distance measured from top of axle tube to bottom of spring tower at center front face of jounce stop. |
| (1) | Axle gap is distance measured from top of axle tube to bottom of spring tower at center front face of jounce stop. |
WHEEL ALIGNMENT SPECIFICATIONS - F250/350 (4WD)