The photos below show
the tire pump handle,
the plunger rod sleeve bearing,
and the plunger assembly.



tirepumphandle1


tirepumphandle06


tirepumphandle02

In the photo above, the hole in the Handle is a place to park the tail end of the locking lever on the "chuck" that clamps to your tire valve.

sleevebearing


plunbgerassembly

Click here for second page of photos