Introduction

This guide will demonstrate how to do a routine maintenance differential oil change to your 2002-2008 Dodge Ram 1500 Chrysler LSD. Due to limited resources the differential oil was not actually changed in this guide.

Image 1/2: Position an oil pan under the differential. Image 2/2: Loosen the bottom 4 bolts first with the 14mm socket wrench. Slowly loosen the rest of the bolts in a random order until oil flows out and enters the drain pan.
  • Locate the twelve 10mm long 14mm hex head bolts holding on the backplate of the differential.

  • Position an oil pan under the differential.

  • Loosen the bottom 4 bolts first with the 14mm socket wrench. Slowly loosen the rest of the bolts in a random order until oil flows out and enters the drain pan.

  • Due to limited resources the oil was not actually replaced in this guide.

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Image 1/1: Repeat the last step in reverse to re-tighten the bolts on the differential cover while following the star method of tightening bolts. Use a torque wrench to ensure proper torque specifications.
  • When tightening the bolts on the diff plate it is vital that you tighten them in a star pattern to avoid warping the plate. Do not exceed a torque of 40 ft-lbs per bolt.

  • Repeat the last step in reverse to re-tighten the bolts on the differential cover while following the star method of tightening bolts. Use a torque wrench to ensure proper torque specifications.

  • Now the differential is fully sealed and ready for new oil.

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Image 1/2: Use a #2 flathead screwdriver to lift the outer lip of the plug.  Pinch the outer lip of the rubber filler plug between your fingers and pull off. Image 2/2: Use a vacuum pump to pump in new differential fluid until the oil level reaches the bottom of the plug hole.
  • Locate the differential filler plug.

  • Use a #2 flathead screwdriver to lift the outer lip of the plug. Pinch the outer lip of the rubber filler plug between your fingers and pull off.

  • Use a vacuum pump to pump in new differential fluid until the oil level reaches the bottom of the plug hole.

  • Re-insert the rubber filler plug.

  • Due to limited resources the differential oil was not changed in this guide.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

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Ken

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Cal Poly, Team 3-24, Amido Fall 2012 Member of Cal Poly, Team 3-24, Amido Fall 2012

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