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Home >> Ford >> 2011 >> Escape Base, 2.5 7, AWD, Standard >> Repair and Diagnosis (Single Page) >> Drivelines & Axles >> Driveshaft & Universal Joints >> Driveline System - General Information >> Diagnosis And Testing >> Driveline System >> Symptom Charts - NVH >> Analysis of Leakage >> Drive Pinion Nut

Drive Pinion Nut

NOTE: Install the drive pinion nut to the correct torque specifications or damage to the differential components may occur.

On some high-mileage vehicles, oil may leak through the threads of the drive pinion nut. This condition can be corrected by installing a new nut and applying threadlock and sealer on the threads and nut face.

Differential Seals 

NOTE: When installing shafts, do not allow splines to contact seals during installation or damage to the seals may occur.

Halfshaft pilot bearing housing seals are susceptible to the same types of damage as drive pinion seals if incorrectly installed. The seal bore must be clean and the lip handled carefully to avoid cutting or tearing it. The seal journal surface must be free of nicks, gouges and rough surface texture.

For information on differential seals, refer to REAR DRIVE AXLE & DIFFERENTIAL - FORD 8.8-INCH RING GEAR article.

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