DRAIN AND REFILL

1. Make sure the wheels are chocked. Install a drain pan under the drain plug, located in the bottom of the differential housing. Place a drain pan under the differential unit to catch the fluid from the drain plug.
2. If there is dirt or build up around the plugs, use a wire brush to remove the dirt. This will help keep contaminents out of the differential fluid.
3. Remove the fill plug from the side of the unit, making sure to retain or replace the fill plug washer.
4. Remove the drain plug, keeping it in your fingers.

   Fig. 1: Drain and fill plug locations — conventional differential

   Fig. 2: Drain and fill plug locations — limited slip differential

   Fig. 3: Use a wire brush to clean the area around the fill plug to keep dirt out of the differential housing

5. When the fluid has drained completely, replace the drain plug, making sure the gasket is retained on the plug.
6. Add fluid until it runs out of the filler plug hole, and install the filler plug.

   Fig. 4: Loosen and remove the fill plug, located on the back cover of the differential unit

   Fig. 5: When removing and installing the fill and drain plugs on the differential units, make sure to either save the old washers (if sufficient for reuse) or install new ones

   Fig. 6: Unscrew the drain plug to drain the differential unit oil

   Fig. 7: After installing the drain plug, fill the unit with clean gear oil until a little runs out of the fill plug hole