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Tractor Talk Discussion Forum

PSB4 American Bosch Diesel injection pump

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John bealor

03-01-2007 15:28:20




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Hi got a PSB4 pump off my Case 401. I removed the distribution head off the pump to clean a sticky pump. Ready to put it back on but cannot figure out how to retime this to the rest of the injection pump. Any suggestions are appreciated.




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John Bealor

03-02-2007 05:22:47




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 Re: PSB4 American Bosch Diesel injection pump in reply to John bealor, 03-01-2007 15:28:20  
Does anyone have a schmatic for a American Bosch PSB4 injection pump?? thanks John



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J Schwiebert

03-01-2007 15:36:49




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 Re: PSB4 American Bosch Diesel injection pump in reply to John bealor, 03-01-2007 15:28:20  
Those PSB pump[s have to be in only one position so that one can remove the hydraulic head from the main pump case. Now Bosch has used several ways to mark the hydraulic head gear. Which procedure (for lack of a better term) you need depends on how your pump and hydraulic head are marked. What procedure did you follow to remove the head? J



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John Bealor

03-01-2007 15:42:29




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 Re: PSB4 American Bosch Diesel injection pump in reply to J Schwiebert, 03-01-2007 15:36:49  
thats the problem didn"t follow much of a proceedure to remove it. I turned the motor slowly and the unbolted distrubion head poped up. It has one red marked tooth on the head gear but no markings on the gear in the injection pump. Just a small washer over the top of the gear, but it allows you to put the head into one of two places and I"m not sure which is correct.



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