Tractor Repair: Case international 585 farm tractor, compression stroke, injector lines

Question
QUESTION: Hi
For the last couple of months,the fuel injector pump on my case 585 was leaking fuel and loosing it's prime. I could, by bleeding the injectors, still start the tractor. Now, the leak has increased and the tractor will not start even if I bleed the injectors.  The leak is between (the block or head) where the injector lines attach to the pump and the main body of the pump. Could it be a gasket or o-ring that's defective?
thanks for your time
Dave B

ANSWER: Hello,

   There is probably an o-ring that is blown out in between.  This is not something you can just get parts for and fix it yourself.  The pump should be sent in to a diesel injection repair facility.  There could be other things wrong with it, and it should be tested and calibrated after being repaired.

         Arnie

---------- FOLLOW-UP ----------

QUESTION: Thanks Arnie,
Now, if I have to send the pump to a repair facility, what's involved in removing it? Other than removing the bolts, lines and cable.  Do I have to make sure the engine's on the #1 cylinder, do I have to mark the shaft or a gear on the pump, to have the correct timing when I reinstall it?
thanks
Dave B

ANSWER: Hello,

  Yes, the engine should be set to the proper timing with #1 cylinder on compression stroke and the pump locked before it is removed so that it can't turn.  Depending on what type of injection pump yours has, there is either a bolt that has to be loosened and then a metal piece with a keyhole shaped opening moved so that the bolt can be screwed in all the way to lock the pump, or some have a plug that has to be removed and a plastic piece under it has to be swapped end for end to engage a tab inside to lock the pump.  Then the pump drive gear can be removed from the pump and you can just let the gear stay inside the timing cover so it will stay meshed properly with the other gears.  Remove the injection lines, fuel supply and return lines, and unbolt the pump from the engine.  As long as the engine is not turned after removing the pump, you can just put the pump back on after you get it back and everything should be in time.  Don't forget to unlock the pump again before cranking the engine.  You will have to bleed the injection lines at the injectors to get it started again.

         Arnie

---------- FOLLOW-UP ----------

QUESTION: Arnie,
How do I set #1  cylinder on compression stroke for proper timing?
Dave B

Answer
Hello,

  First I want to clear up some wrong information that I gave you before.  This particular model pump does not have a lock bolt feature to prevent the pump from turning after it is removed, so disregard that.  This style pump has a key on the shaft to index the gear in the proper place, so it doesn't matter if the pump turns.   In order to verify that the #1 cylinder is on compression stroke, you can remove the valve cover and turn the engine until both #1 valves are closed as the TDC timing mark on the front crankshaft pulley is coming up to align with the pointer.  Or you can remove #1 injector and put your finger in the hole as you turn the engine and feel for compression as the piston comes up and then align the timing marks.  Make some marks on the pump and engine so the pump can be rotated into the exact same position before the mounting bolts are tightened.

         Good luck,

         Arnie