It's not always the seal that's the issue.
Your pinion seal has multiple components that can cause your pinion seal to leak. This pinion yoke had a groove worn just enough to cause a leak even with a new seal. This groove could have been caused by low fluid level in the differential, this increases friction between the seal and the shaft. Over time it can cause a groove to form. Sometimes the yoke needs to be replaced with the seal.
Another thing is worn bearings allowing the pinion shaft to move excessively this will cause increase pressure on one side and allow fluid to leak at the same time. When this occurs a more significant differential repair may be required.
If your differential vent hose is plugged this can cause pressure to build up as the differential gets warm. This pressure can cause seals to leak even when they are in good condition. It is important to check the vent when you are doing any differential service work.
Give us a call and let us take care of you.
Happy Adventures,
Heather
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