Lubrication of the Front Axle Wheel Bearing

Stemco front axle hub caps have a transparent inspection window with lubrication level marks for checking the amount of lubricant available for the front wheel bearings. See Fig.. If the lubricant level is low, remove the center fill plug and add lubricant until the level reaches the 'full' mark. Fill the hub with Hypoid Gear Oil API-GL-5 with Military Specification MIL-L-2105C, SAE viscosity 75W-90.

Fig. 1, Front Hubcap Inspection Window