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Milodon external oiling pump

Posted By: Z_Z

Milodon external oiling pump - 04/17/24 01:05 PM

Hey all, have a quick question. I have never messed with external oiling before, and after having low oil pressure issues, I've figured out all the o-rings are shot. Bought the Doty manufacturing washer kit for the pan. I did get it back to steady 65 lbs. Then last night realized the one on the back of the oil pump looked bad also. After getting the pump cover off(cause the back fitting hit the k member) of coarse the race for the oil pump slid out. My question is the pump gear timed? Part number on the side of the pump cover is 21200. Also what do you guys do to freshen up the pump? I cleaned the o-rings put new grease on them. Also noticed the pump gear a little chewed up in spots. Thanks
Posted By: rickseeman

Re: Milodon external oiling pump - 04/17/24 01:27 PM

Chewed up pump gears is fine. Nothing is timed. Just clean everything up good and put it back together. Don't get in a hurry.
Posted By: Z_Z

Re: Milodon external oiling pump - 04/17/24 02:16 PM

Ok perfect, thank you Rick!
Posted By: Cab_Burge

Re: Milodon external oiling pump - 04/17/24 07:35 PM

Originally Posted by rickseeman
Chewed up pump gears is fine. Nothing is timed. Just clean everything up good and put it back together. Don't get in a hurry.
iagree wrench up
Posted By: Cab_Burge

Re: Milodon external oiling pump - 04/17/24 07:41 PM

Buy a new stock oil pump and reuse all of the Milidon parts on it twocents wrench scope
I like and use the stock high volume oil pumps made Mellings and the other company that I can't remember its name now blush Johnson maybe confused
Posted By: gregsdart

Re: Milodon external oiling pump - 04/17/24 09:22 PM

I have a Milodon high volume pump, and found it to be at max spec out of rhe box! .004 end clearance, on a product that will grow out of spec (max end clearance .004) just because the aluminum housing will grow as it warms. I used a flat plate and sandpaper to bring it down to .0017, or .0002 over minimum cold. That ought to help it pull a prime now. This was not in your original post, but felt it important.
Posted By: Z_Z

Re: Milodon external oiling pump - 04/18/24 10:40 PM

Thanks guys..appreciate all the information..gonna try to get this back together tonight.
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