I have followed the detailed instructions for installation of the oil pump in time with the distributor as described in TM 9-1840A. After installing the oil pump and setting the slot and dist drive gear in the correct position, the dist will only fit 180 degrees from the 7 o’clock install position. ...

Just finished replacing the gasket on the engine oil pump due to a leak. I made sure the slotted area fit and the pump was flush to the block. Now the truck won’t start and it acts like it has a timing issue - previously it would start first crank every time. Any ideas? I’ve replaced an oil pump bef...