Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Differential Case Runout Check
2021 Ford Edge SE, 4WDSECTION Differential Case Runout Check
WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
For information on Ford Color Coded Illustrations, refer to OEM COLOR CODING
Special Tool(s) / General Equipment
| Dial Indicator |
|---|
| Hydraulic Press |
| Punch |
| Copper Hammer |
Check
- Remove the differential. Refer to: Differential Carrier .
- Remove and discard the ring gear bolts.
- Using the brass punch and a soft face hammer, remove the ring gear.. Use the General Equipment: Punch. Use the General Equipment: Copper Hammer
- Install the differential bearing caps and bolts. Align the differential bearing caps in there original location.
Torque: 80 lb.ft (108 Nm)
- Rotate the differential carrier to make sure the bearings have seated correctly.
- Using the dial indicator, rotate the differential carrier and measure the differential carrier runout.
- If the runout does not exceed the specification, install a new ring gear and pinion.. Use the General Equipment: Dial Indicator
- If runout exceeds the specification, the ring gear is true and the condition is due to differential carrier/differential bearing damage.
- Inspect the differential bearings and the differential carrier. Always install new differential bearings when installing a new differential carrier, or if a bearing condition is questionable.
- Remove the differential bearing caps, bolts and the differential carrier.
- Install the ring gear onto the differential carrier. Align the ring gear using 3 new bolts. Using the general equipment: press the ring gear into place.. Use the General Equipment: Hydraulic Press
- Install the remaining new ring gear bolts.
Torque: 159 lb.ft (215 Nm)
- Install the differential carrier. Refer to: Differential Carrier .
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.