Front axle hubs

[castro0724]

On my front hubs each side has a plug that screws into the back of the hub and in each plug there is a grease fitting that is screwed into the plug. My question is do you unscrew the plug and then add oil or grease and if so, what kind and type of oil or grease or do you just service it with grease using the grease fitting. Thanks

[Joe Gopan]

Could you post a pic? For some reason I am not recognizing your description.

[captaincarrier]

That sounds like the Front Axle Universal Joint & Steering Knuckle Bearings, fill to plug with chassis grease.

[artificer]

Some of the terminology is not recognizable. Probably the swivel pin/cv/knuckle housings are what is being described.
If this diagram identifies the plug being talked about, it normally doesn't have a grease fitting but is just a standard gas plug.
The plug is removed & general purpose grease is used inside, to that level.

[signsup]

In the Model T world, it is a common Bubba mod to drill, tap and add a zirc fitting to a grease cup cap. Then, it's just a matter of shooting in some grease with the grease gun on a regular basis. Maybe that is what the OP has? Someone added the zirc fitting to make it easier to keep filled?