Parker lockdown Vacumatic pump exploded view

[Ron Z]

 

Top - lockdown bar

row 2 - cone, thread bushing.

row 3 - pump tube, fiber disc, spring with reinforcing piece attached, button

 

The fiber disc goes in the tube, then the spring, then the brass button is inserted and the end of the tube rolled over to fit into the groove.  When repairing using epoxy is often a more efficient way to lock the button in the tube.

 

Then the thread bushing is slipped over the tube. The spring is pushed back using a dull #11 craft (Xacto) knife blade. Fit the cone on, guide the bar through slits in the cone and tube.  Once in place release the spring and the cone will snap forward.  The pellet and diaphragm go into the front end of the tube.  It should push the fiber disc back a bit. Pull the cone forward to lock the diaphragm in place.

[VacNut]

Ron

Do you have a recommendation for a replacement material for the fiber disks? 

[Ron Z]

Harvest one from a dead pump. I have accumulated a bag of them over the years.

[EasyWriter]

That's an interessting picture! I'm working on  some lock down fillers at this moment.