What are the basics when replacing a diesel fuel injection pump?

Question

This is a john deere engine

Answer 1

never messed with john deere but youll need a book to find how they want you to time it before removing it. there are many differant ways but usually its some cyl on TDC but not always. so get a book. stanadyne is master splined but thats rare.

Answer 2

these comments are in general terms and don't apply specifically to john Deere. first thing is to turn the engine until the timing marks line up they are usually on the flywheel and some engines have a place to insert a pin through the bell housing to lock the engine. now the injector pump also needs to be timed, on a miniature mechanical pump there will be timing marks on the drive end, on a rotary pump then you a special tool [ a plug is removed from the side of the pump and a specially made rod is screwed in] to lock the pump on no.1 injector stroke the pump is now ready to fit to the engine. It is much the same as fitting a distributor to a petrol engine the same principles apply, you will notice that at the flange end of the pump the mounting holes are slotted this allows for fine tuning once the engine is running.it's not difficult and if you get it wrong all that will happen is it won't start, if it knocks real bad or kicks back it's to far advanced and if it blows white smoke then it's to far retarded.

Answer 3

The best thing to remember is once the fuel system is opened to keep the lines, fittings, pump, and injectors very clean. One grain of sand in the tip of an injector can set you back a lot time.
Use all new gaskets and or O rings. Gasket sealers should be minimized, if used at all, to prevent injector contamination. I also agree with Sonny's answer above.

Answer 4

As the injection pump is also the timing device for the engine, removal and replacement is best left to a mechanic with some experience and training . Please do not try this at home !