As different to the normal injector, with only one (1) cap nut (feed line), with the PT fuel System Fuel circulates through the injector at all times except during a short period following injection into the cylinder. From the inlet connection fuel flows  down the inlet passage of the injector, around the injector plunger, Step 1-4. Injector cross section between the body end and cup, up the drain passage to the drain connections and manifold and back to the supply tank. As with all other Injectors The Fuel Unit KA3 has to be placed on the feed line cap nut. Also here a no tool installation when the injector is accessible. older N Series Engines

The KA3 must be installed in opposite planes on the injector cap nut. On Cummins PT systems make sure the KA3 is installed also on opposite planes on the fuel injector making sure that it is installed on the feed side of the injector, not the return side. The feed side is connected to a common fuel rail (fuel manifold) which in turn is connected directly to the fuel pump. The return line on the injector goes directly to the fuel tank, also via a manifold.

Step 1                                 Step 2                                Step 3                                Step 4 NOTE: On PT Fuel line Systems,  which are in some cases are just drillings through the cylinder head, our KA3 cannot be applied as needed. Therefore:  We cannot help to reduce consumption on these engines. No part of this site may be used or reproduced digitally or in print without the written permission of AdvaTech USA, Diether Heidenreich All pictures and graphics are copyright  AdvaTech USA  unless otherwise noted and may not be used without written permission, 2003 - 2008.