Rear differential leak?

2008 KIA SPORTAGE
135,000 MILES • V6 • 4WD • AUTOMATIC
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BKELLS848
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I have a leak around my differential and I'm not sure which parts I should be replacing to try and fix it. Thank you for all the help!
Mar 5, 2025 at 2:01 PM
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CANNON1349
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Hello, looks like the axle seal on this side is leaking. I will include the instructions how to remove and install below. Pictures will be attached at the bottom. After removing the axle you will need to use a flat screwdriver or source a seal puller at any auto parts store to replace it, then you can reinstall the old axle. Be sure to be careful with the rubber boots, and make sure it seats all the way when reinstalling.

REMOVAL

1. Loosen the wheel nuts slightly.
Raise the rear of the vehicle, and make sure it is securely supported.
2. Remove the rear wheel and tire(A) from rear hub(B).

CAUTION:
Be careful not to damage the hub bolts(C) then remove the rear wheel and tire(A).

3. Remove the wheel speed sensor(B) from the axle carrier(A).

(image 1)

4. Remove the split pin(A), then remove castle nut(B) and washer(C) from the rear hub under applying the break.

(image 2)

5. Remove the trailing arm mounting bolt(B) from the knuckle(A).

(image 3)

6. Remove the suspension arm mounting nuts(C).
7. Push the axle hub(B) outward and separate the driveshaft(C) from the axle hub(B).

(image 4)

8. Insert a pry bar(A) between the differential case(B) and joint case(C), and separate the driveshaft(D) from the differential case.

(image 5)

CAUTION:
- Use a pry bar(A) being careful not to damage the transaxle and joint.
- Do not insert the pry bar(A) too deep, as this may cause damage to the oil seal.(max. depth : 7mm(0.28in).
- Do not pull the driveshaft by excessive force because it may cause components inside the BJ or TJ joint kit to dislodge resulting in a torn boot or a damaged bearing.
- Plug the hole of the transaxle case with the oil seal cap to prevent contamination.
- Support the driveshaft properly.
- Replace the retainer ring whenever the driveshaft is removed from the transaxle case
Mar 5, 2025 at 7:04 PM
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BKELLS848
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Thank you so much! I will get working on it as soon as I can and let you know how it goes.
Mar 5, 2025 at 8:46 PM
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CANNON1349
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That sounds great. If you can, send us pictures! Thanks for using 2CarPros.

William
Mar 6, 2025 at 7:07 AM