Ball Joint Inspection
WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
- Prior to inspecting the ball joints for wear, inspect the wheel bearings. For additional information, refer to NOISE, VIBRATION & HARSHNESS .
- Raise and support the vehicle by the frame or by the axle beams.
- Inspect the ball joint and ball joint boot for damage.
- If the ball joint or ball joint boot is damaged, install a new ball joint. For additional information, refer to FRONT SUSPENSION - REAR WHEEL DRIVE (RWD) for rear wheel drive (RWD) vehicles and FRONT SUSPENSION - FOUR WHEEL DRIVE (4WD) for four wheel drive (4WD) vehicles.
- Inspect the ball joint for relative movement by alternately pulling outward and pushing inward on the wheel and tire assembly at the 12 o'clock and 6 o'clock positions, by hand. Note any relative movement between the wheel knuckle and the axle at the lower ball joint.
- If relative movement is not felt or seen, the ball joint is OK. Do not install a new ball joint.
- If relative movement is found, continue with Step 5.
- To measure ball joint deflection, attach a suitable dial indicator with a flexible arm between the axle and the wheel knuckle at the lower ball joint.
- Measure the ball joint deflection while an assistant alternately pulls outward and pushes inward on the wheel and tire assembly at the 12 o'clock and 6 o'clock positions, by hand.
- If the deflection exceeds the specification, a new lower ball joint must be installed. For additional information, refer to FRONT SUSPENSION - REAR WHEEL DRIVE (RWD) for RWD vehicles and FRONT SUSPENSION - FOUR WHEEL DRIVE (4WD) for 4WD vehicles.
- If the deflection meets the specification, continue with the procedure.
- Inspect the ball joint for relative movement by alternately pulling outward and pushing inward on the wheel and tire assembly at the 12 o'clock and 6 o'clock positions, by hand. Note any relative movement between the wheel knuckle and the axle at the upper ball joint.
- If relative movement is not felt or seen, the ball joint is OK. Do not install a new ball joint.
- If relative movement is found, continue with Step 8.
- To measure ball joint deflection, attach a suitable dial indicator with a flexible arm between the axle and the wheel knuckle at the upper ball joint.
- Measure the ball joint deflection while an assistant alternately pulls outward and pushes inward on the wheel and tire assembly at the 12 o'clock and 6 o'clock positions, by hand.
- If the deflection exceeds the specification, a new upper ball joint must be installed. For additional information, refer to FRONT SUSPENSION - REAR WHEEL DRIVE (RWD) for RWD vehicles and FRONT SUSPENSION - FOUR WHEEL DRIVE (4WD) for 4WD vehicles.
- If the deflection meets the specification, no further action is required.
CAUTION:
Do not use any tools or equipment to move the wheel and tire assembly or suspension components while checking for relative movement. Suspension damage can occur. The use of tools or equipment will also create relative movement that may not exist when using hand force. Relative movement must be measured using hand force only.
NOTE:
To avoid lateral movement of the steering linkage and steering components, make sure to apply hand force only at the 12 o'clock and 6 o'clock positions of the wheel and tire assembly.
NOTE:
In order to obtain an accurate measurement, the dial indicator should be aligned as close as possible with the center line of the ball joint.
CAUTION:
Do not use any tools or equipment to move the wheel and tire assembly or suspension components while checking for relative movement. Suspension damage can occur. The use of tools or equipment will also create relative movement that may not exist when using hand force. Relative movement must be measured using hand force only.
NOTE:
To avoid lateral movement of the steering linkage and steering components, make sure to apply hand force only at the 12 o'clock and 6 o'clock positions of the wheel and tire assembly.
NOTE:
In order to obtain an accurate measurement, the dial indicator should be aligned as close as possible with the center line of the ball joint.