Hi Paul
Here are some photos to show what Bob is talking about. The little plugs are hidden under the grease. Removing the grease fittings is optional after pumping new grease in. If the truck is only driven on the road the grease fittings will not cause a problem. If you drive off road or through tall brush they can get caught on stuff. One of my trucks has grease fittings as it never goes off road anymore and I lost the little plugs.
Bigger issue on putting grease in at this location is do you want to put the new grease at the outside of the old grease or in the center of the joint.
On my web site I have this comment-
Quote:
"Another simple lubricating tool is for adding fresh grease to the front end universal drive balls. These according to the manual are suppost to be disassemble every 5000 miles cleaned and relocated with a couple of pounds of grease. Every thousand miles you are supposed to remove the plug in the axle balls and add grease. If you just put a grease fitting in and pump away the new grease is added at the outside of a 6" ball of grease. Instead take a length of 3/8ths copper tubing crimp a grease fitting in one end. Then with the wheel jack up insert the tub until you hit the universal joint in the middle then give it 5-10 squirts with the grease gun. Then withdraw the tool rotate the wheel 180 and reinsert the grease tube and shot away again. This gets the newgrease directly into the center of the ball."
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Cheers Phil