View Full Version : Mac 90 mechanic pump?
04-25-2004, 03:58 PM
I am goin to remove the mechanic pump from my mac. Are any prosidure to do
That? I heard that when you remove it it has a small metal that I have to be carefull! (becarefull of what?) , Do I remove the small metal or do I leave it there? :confused:
04-25-2004, 06:04 PM
For what it is worth, what I remember doing with my Mac 72 was removing fuel pump and gasket, cutting aluminum housing to perhaps 1/2 inch from engine casing, cutting plunger rod to plug hole (and not to contact crankshaft cam and also sticking out approx. 1/4 inch) then filling entire hole with epoxy. No leaks yet (I think!)
"small metal" you refer to may be the plunger rod. Good Luck!
04-25-2004, 06:09 PM
Thank you Darrell! :D :D
04-25-2004, 07:55 PM
Jose, if you have the engine off the airframe you can plug the hole easily. Remove the pump & gasket, then remove the pump rod. Next remove the seal from the case , Take a handsaw & saw off the pump mount off the bottom of the case. Next take a 1/16" x27npt tap & thread the hole , then put in a 1/16 x27 allen socket pipe plug with some sealer on the threads.Throw the old pump in the trash!
04-26-2004, 06:08 AM
Thank you Rick, Sorry I haven't call you is that I am first rebuilding the engine,
changing old bolt with new one ... Theres lot of money!! on my new baby!! :cool:
04-26-2004, 06:10 AM
Rick, I forgot to tell you my Mac doen't have your CDI system , I have to get in contact with you to get one.
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