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STANDARD PROCEDURE - DRAIN AND REFILL 1. Drive the vehicle until the differential lubricant is at the normal operating temperature. 2. Raise and support the vehicle. 3. Remove the differential housing fill plug (1). 4. Position a drain pan under the differential housing drain. 5. Remove the differential housing drain plug (2). 6. Drain the differential housing completely. 7. Install the differential housing drain plug (2). Tighten the drain plug to 50 N·m (37 ft. lbs.). 8. Fill the rear axle to proper specifications. 9. Install the differential housing fill plug (1). Tighten the fill plug to 50 N·m (37 ft. lbs.). SPECIFICATIONS SPECIFICATIONS - DIFFERENTIAL LUBRICANT Use synthetic SAE 75W-85 axle lubricant that meets MB 231.1, such as Mopar 05136035AA. An SAE 80W-90 SPECIFICATIONS - TORQUE TORQUE SPECIFICATIONS DESCRIPTION N·m Ft. Lbs. In. Lbs. Differential Housing Cover Bolts 30 + 45° 22 + 45° — Differential Housing Front Mounting Bolts 110 82 — Differential Housing Rear Mounting Bolts 45 33 — Pinion Shaft Nut 180 133 — ZH REAR DIFFERENTIAL 3 - 43 |