Diesel Data: Automotive Repair

Front Steering Knuckle: Service and Repair



Steering Knuckle Replacement


Tools Required
* J 6627-A Tie Rod Puller
* J 24319-B Steering Linkage and Tie Rod Puller



Removal Procedure


Important: You may remove the following components as an assembly:


* The steering knuckle

* The lower ball joint

* The front hub

* The wheel studs

* The front wheel bearing

* The disc brake shield



1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (Service Intervals).
2. Remove the front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation (Service and Repair).
3. If the vehicle has ABS, remove the ABS wheel speed sensor from the steering knuckle. Position the sensor to the side. Refer to Front Wheel Speed Sensor Replacement (Front Wheel Speed Sensor Replacement).
4. Unstake the front wheel drive shaft nut.
5. Remove the drive shaft nut from the drive axle while an assistant presses the brake pedal.




6. Remove the 2 nuts (1, 2) and the bolt (3) from the lower control arm.
7. Remove the brake rotor. Refer to Front Brake Rotor Replacement (Service and Repair).
8. Loosen the nuts on the lower side of the strut assembly. Do not remove the bolts.




9. Remove the outer tie rod cotter pin (2).
10. Remove the outer tie rod nut (1).
11. Use the J 6627-A , or equivalent, in order to disconnect the outer tie rod from the knuckle.
12. Remove the 2 nuts and the 2 bolts from lower side of the strut assembly.
13. Remove the steering knuckle from the strut.

Important: If you are replacing the steering knuckle, continue with this procedure.


14. Remove the front wheel bearing and the disc brake shield. Refer to Front Wheel Hub, Bearing, and Seal Replacement (Front Suspension).




15. Remove the steering knuckle cotter pin (5) and the ball stud nut (4).
16. Use the J 24319-B , or equivalent, in order to remove the ball joint (3) from the steering knuckle.



Installation Procedure






Notice: Refer to Fastener Notice (Fastener Notice).


Important: Do not loosen the nut in order to insert the cotter pin.


1. Install the ball joint (3) and the nut (4) to the steering knuckle (2).

Tighten the nut to 103 N.m (76.0 lb ft). Tighten the nut up to 1/6 additional turn in order to insert the cotter pin.

2. Install a NEW cotter pin (5) to the ball joint stud. Bend the cotter pin ends in order to retain the nut.
3. Install the front wheel bearing and the disc brake shield to the steering knuckle. Refer to Front Wheel Hub, Bearing, and Seal Replacement (Front Suspension).

Important: Do not tighten the nuts or the bolts.


4. Install the following components to the lower side of the strut assembly:

* The steering knuckle
* The 2 bolts
* The 2 nuts


Important: Do not loosen the nut in order to insert the cotter pin.


5. Install the outer tie rod and the nut to the steering knuckle.

Tighten the outer tie rod nut to 49 N.m (36 lb ft). Tighten the nut up to 1/6 additional turn in order to insert the cotter pin.

6. Install a NEW cotter pin to the tie rod ball joint stud. Bend the cotter pin ends in order to retain the nut.
7. Install the front brake rotor. Refer to Front Brake Rotor Replacement (Service and Repair).
8. Install a NEW drive shaft nut while an assistant applies the brakes.

Tighten the nut to 216 N.m (159 lb ft).

9. Stake the drive shaft nut into the slot on the wheel drive shaft.




10. Install the bolt (3) and the 2 nuts (1, 2) to the control arm.

Tighten the bolt and the 2 nuts to 89 N.m (65.6 lb ft).

11. Tighten the nuts and the bolts on the lower side of the strut assembly.

Tighten the nuts and bolts to 220 N.m (162.3 lb ft).

12. If the vehicle has ABS, install the ABS wheel speed sensor to the knuckle. Refer to Front Wheel Speed Sensor Replacement (Front Wheel Speed Sensor Replacement).
13. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation (Service and Repair).
14. Lower the vehicle.
15. Measure the front wheel alignment. Adjust as necessary. Refer to Wheel Alignment Measurement (Service and Repair).