DWaits Posted December 21, 2005 Share Posted December 21, 2005 On my old water pump ( Mack ENF510A ) it has a grease cup, on my replacment pump it has a grease zerk.Should I go back and replace the zerk with the cup or use the zerk?What would be the advantage / disadvantage of using either one?David Quote 1948 Mack Pumper Link to comment https://www.bigmacktrucks.com/topic/619-grease-fittings/ Share on other sites More sharing options...
rick harper Posted December 21, 2005 Share Posted December 21, 2005 on my restoration i went back with the grease cup/cover for originality more than anything else. Quote Link to comment https://www.bigmacktrucks.com/topic/619-grease-fittings/#findComment-2872 Share on other sites More sharing options...
Freightrain Posted December 21, 2005 Share Posted December 21, 2005 A cup, you simply "tighten the lid" a bit occassionally to pump more grease into part? I think that would be fine, plus it would look original. I'm not sure a zerk would be much better? Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/619-grease-fittings/#findComment-2875 Share on other sites More sharing options...
DWaits Posted December 22, 2005 Author Share Posted December 22, 2005 I will go back with the cup to keep it original, how do I know when the pump and cup are full of grease?David Quote 1948 Mack Pumper Link to comment https://www.bigmacktrucks.com/topic/619-grease-fittings/#findComment-2882 Share on other sites More sharing options...
Freightrain Posted December 22, 2005 Share Posted December 22, 2005 Kinda like a zerk. Fill the cup, give it a twist to force grease into bearings and let it go. On occasion, give cap a twist to force more.I guess you don't know exactly how much is getting in, guess you have to go on WAG method? Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/619-grease-fittings/#findComment-2883 Share on other sites More sharing options...
DWaits Posted December 22, 2005 Author Share Posted December 22, 2005 After I had my generator rebuilt I filled both cups twice, on the seconed try I could feel a little back pressure.I was not sure if that was how it's done,Hope it was enough.I got the water pump apart today, Took most of the day just to get it apart and cleaned, looks like it will work as is. at least for now. I should get it all back togather, painted and back on the engine Friday. I took a few pictures, I will post them later tonight or in the AM.It's good to be making progress on the truck again!DW Quote 1948 Mack Pumper Link to comment https://www.bigmacktrucks.com/topic/619-grease-fittings/#findComment-2891 Share on other sites More sharing options...
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