16-2 Fuel Pumps

[listerclone]

I second the thanks to sirpedrosa.  The diagrams did help some but I am still having problems.  First of all the fuel pumps I took apart did not have the assembly dots as in the diagram.  The only assembly dot was on the rack to show the center.  I tried assembling my two pumps with the center plunger in both positions but could not get them to pump.
Next step was to buy a rebuilt pump from India and that one worked, or at least a little squirt would come out the discharge port every engine revolution.  Next I disassembled the new pump to see how it is configured.  On attempting to assemble the original pumps to match the newest one I ran into another problem.  I don't know how to assemble the slotted bolt on the side of the pump.  If I tighten it down like the new one the pump locks up and will not stroke.  With no instructions I am stuck on how and when, in the assembly process, to tighten this bolt.
As always, thanks so much for the help.
Dan

[Powdermonkey]

The fuel pump utilizes a rack and pinion to define the pump opening.  You've GOT to "essentially" time the relationship of the rack, with the pinion.  I used a strong flashlight, to get the rack to start at the proper time, with the pinion.  Fiddle with it for a minute or two, and you'll see what I mean (while everything is apart).

I have rebuilt the Indian pumps in the past, and they're not overly difficult to time this critical feature.  No dots needed.  Just put the rack as close to the "closed " position as you can, while inserting the pinion through the pump body, and meshing with the rack teeth.  Of course, the pinion rotation at this point should also correspond with "as close to zero" as possible. 

As for the screw that goes into the side of the pump, it's the LAST thing that goes on, AFTER the rack and pinion are timed correctly. 

[38ac]

There are several variations of the barrel part of the element. If yours has two holes in the side then the  slotted one goes toward the keeper screw. Also the keeper screw is supposed to have a copper washer under it. That screw does not retain the barrel, it's function is to keep the barrel from turning on the casting.