API GL-4 or GL-5 80W-90 or 75W-90 gear lube is recommended.
See Figures 1 through 6
The drive axle fluid level is checked from underneath the truck.
- Clean the dirt and grease away from the area of the filler (top) plug.
- Remove the filler plug. The lubricant level should be even with the bottom of the filler plug hole.
- If lubricant is required, use only the specified type. It will probably have to be pumped in through the filler hole. Hypoid SAE 90 lubricant usually does not pour very well.
On Navajo models with the front locking differential, add 2 oz. of friction modifier Ford part No. EST-M2C118-A. On Navajo models with the rear locking differential, use only locking differential fluid Ford part No. ESP-M2C154-A or its equivalent, and add 4 oz. of friction modifier Ford part No. EST-M2C118-A.
DRAIN AND REFILL
Pickups and MPV
See Figures 7 through 12
These models use a removable carrier axle which has a drain and fill plug.
- Jack the front and/or rear of the vehicle and support it with jackstands.
- Position a suitable container under the axle drain plug. Remove the fill plug to provide a vent.
- Remove the drain plug and allow the lubricant to drain out.
Do not confuse the drain and fill plugs. The drain lug is magnetic to attract fine particles of metal which are inevitably present.
- Clean the magnetic drain plug.
- Install the drain plug.
- Fill the rear axle with the specified amount and type of fluid. Install the filler plug.
- Lower the truck to the ground and drive the truck, checking for leaks after the fluid is warm.
Remove the filler plug. Remove the oil with a suction gun. Refill the axle housings with the SAE 80W/90 gear oil. Be sure and clean the area around the drain plug before removing the plug.