Posted by 4320diesel on May 08, 2010 at 18:48:28 from (67.201.135.211):
ok guys, today i wanted to give my 1971 4320 john deere some more fuel. i own a 1985 GMC 6.2L diesel and ive tweaked the fuel delivery on it multiple times. its real simple. and you can do it through the top cover. anyways, on the 4320 it has a similar injection pump, and i figured this will be the same sort of operation to do, just in a smaller area. well i took the top off and the guts out(super simple) and opened the timing cover on the pump to drain the fuel out of it to make seeing the screw easier. then i took the timing cover off the clutch housing to turn the engine over to line up the screw and the access hole. well i spent 2 hours turning the engine and finally got it lined up. then i went to put the allen wrench down in there to give it 1/8th of a turn and the damn wrench wouldnt fit. the throttle shaft was in the road. so how do you tractor pulling guys do this? or do i have to completly rip the pump off the tractor, remove the throttle shaft to do this simple operation, that only takes me half an hour to do on my 6.2L diesel truck?
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