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Belarus 420A - Problems bleeding Injection Pump

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Join Date: Nov 2016
Posts: 8 Canada
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2017-01-10          196079

I am having problems bleeding the injection pump, and injector lines. I believe the air is getting into the system at the primer pump. Any experiences with this primer (booster) pump? When I pump, the diesel squirts up along the shaft, and pressure will not build. If diesel gets out, I am concerned that air gets in along the same path. The bleed plug above this pump does not fill; rather, I continue getting air and a bit of diesel. Most of the diesel comes out at the plunger shaft, as noted above. Primer pump may need to be rebuilt?

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