Re: Roosa Master Inj Pump

Posted by pete 23 on September 05, 2015 at 12:40:38 from (50.33.28.197):

In Reply to: Roosa Master Inj Pump posted by mike1990323 on September 04, 2015 at 07:36:38:

Here is something I used to do after repairing a few pumps that I felt it took too much cranking with the starter to get them going. Also, I gives you the satisfaction that the pump actually does pump and most of all, will shut off . I just fashion a bracket on the side rail of tractor or anyplace within reach of the fuel supply line. Hook up the supply and put the old speed handle wrench on and crank away. When a fuel pump shop gets done with a pump, everything inside is primed up so to speak. When you don't have a test bench , it is all dry, full of air. Hooking a gauge onto the primary pump test port will also go a long way to show if primary pump is building pressure. At cranking speed it won't show much but has to show some. I think if you put the cam ring in backwards it will still pump some, just wrong time, but if liner in primary is backwards, I don't think it will pump any. Never tried it, just from what I have heard. Depending on your application, you may have to remove the drive housing from tractor, but I just had one from a junker. I even jerry rigged a shaft with a seal on it so it did not have to remove the drive from tractor. Electricians tape will even do the trick and any contamination from your make shift shaft is on the return side so will not get into working parts of pump if anyone is worried about that.

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