How does the vacuum plunger attach to the bracket on my front diff. I lost 4X4 and wanted to check it out. Pulled the plastic cover and and everything is frozen. I see the plunger, a boot and the lever going up to the top of the diff but everything is stuck. What is the best thing to do.

John

 

Lots of penetrating oil to start. Soak it good. The Vacuum actuator motor, that is what the plunger is called, has a brass fitting that slides into an ear in the axle tube. It is most likely seized. Pull the boot out of the way the and release the e-clip. Try to pull the actuator out of the ear. Here is a picture of what happens if you hit the ear with a hammer.



I should have used more penetrating oil and less hammer. The penetrating oil might be enough to free up the rod in the actuator so give that a shot first.

.

.