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JD 300D Injector Pump Timing

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Denny Key

08-08-2002 09:00:52




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My tractor starts and dies and I've been told the pump is out of time with the crank. How do I time the thing without dismantling the engine?




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DON

08-08-2002 18:29:06




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 Re: JD 300D Injector Pump Timing in reply to Denny Key, 08-08-2002 09:00:52  
sounds like the return line is plugged. remove the timing window and see if it will keep running , if so thats what it is.There's a timing pin located on the left rear of the engine remove it and turn it around and insert it in the threaded hole , turn the engine by hand while pushing the pin in and tdc it will go in. It will either be in time (no 1 tdc) or tdc no 4 . look at the crank pully and see if the marks line up,if not you will have to turn the engine 1 full turn.

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Jonathan

08-08-2002 14:06:56




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 Re: JD 300D Injector Pump Timing in reply to Denny Key, 08-08-2002 09:00:52  
Does the engine run ok when first started and then die after a few minutes ??? did this happen all of a sudden or did you have the pump off for some reason ?? What you have been "told" doesn't sound right !!



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Denny Key

08-08-2002 14:26:29




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 Re: Re: JD 300D Injector Pump Timing in reply to Jonathan, 08-08-2002 14:06:56  
I put a rebuilt pump on and the tractor ran for about 10 minutes and I shut it off because I was getting fuel into the crankcase. I pulled the pump off and installed another 'o' ring on the pilot shaft, put it back on, and now it will start, but dies immediately. everything else checks out, plenty of fuel everywhere, injectors seem to be firing, etc. I can't tell how to look at the gears in front to tell if marks are aligned.

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