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do you just have a leak or the tractor will not start?? If it runs ,tighten fuel lines ,start tractor, carefully crack open fuel lines one at a time at injector,you should have fuel there then. If you do not have fuel at injector then I would say pump needs work or replacement.
I would say if the leak is just weeping no ,if you are getting a spray of fuel then it just needs to be fixed, I do not know about that pump but many use copper compression washers to seal those injector tubes. do not use teflon tape ,it can not handle those pressures. If you got a diesel injector pump repair around they might be able to help you out. Some of these pumps are bosch clones so parts might be easy to get.
I would first look at the low pressure fuel lines, if you find them leaking the rings on the ends that hold the fuel lines to the banjo bolt fittings can be ground off and standard rubber fuel used on the old banjo fittings with a screw type hose clamp . there might be a screen fuel filter inside of the fittings so check that out and clean as necessary.
that would be good to see for a reference, all I have is a parts book,for a simulairish tractor.
I have had good luck with adding a older style ford starter relay, and taking the load off the key switch that is wired on the small size gauge wise. there was a guy here a few months ago that did the conversion with good results. search the site here to see the details of it or if you are interested I can go over the method again. It is pretty easy to do.
you will need to bleed it in two places , it should gravity bleed to the inlet of the injector pump ,but can be speed up by using the manual screw down knob on the lift pump helping it along, then at each injector on the cylinder head. if you have a decompression release use it and it will turn over faster and with less load on the battery. be carefull of the high pressure spray.
the napa 3195 is a very popular filter for use in many machines of all kinds of makes and appiclations.
check your fuel system( filters and amount of flow from tank) and look at fuel quality ( no water) it might be a good idea to get a glass jar and pull off a sample and let it sit for a min. and look at it to see if there is water in it. If your injection pump does not use engine oil pressure to lube it now would be a good time to check its oil level and oil quality. also if you have some rubber fuel lines make sure there is no cracks to let air into the fuel system.
