Where to find a re-buildable Vacuum Pump or just buy a Rockauto cheapie?
Hello, this is my first post on this board.
My 94 started spewing oil from underneath on the way home and I shut it down just as the oil gauge started pulsating. I got underneath and a drop motor oil landed on my forehead as I looked up at a small section of nice shiny metal (nothing on this truck is typically shiny). I pulled the vacuum and steering pump off to find part of the vacuum pump chunked out.

Obviously can't rebuild this one with the Cummins seal kit (4089742), so I started looking for used ones in the classifieds and ebay. Its hard to believe used ones could be so rare.
The standby is a new DORMAN Part # 904810 for $175 plus shipping. Probably a china part, its only saving grace is a lifetime warranty.
I would like to find a factory pump that I can put the $10 Cummins seal kit in, but its hard to justify paying a lot for a used pump that I need to tear apart. Should I just buy the new DORMAN and be done with it? Anyone have an old factory pump they want to sell for a reasonable $?
My 94 started spewing oil from underneath on the way home and I shut it down just as the oil gauge started pulsating. I got underneath and a drop motor oil landed on my forehead as I looked up at a small section of nice shiny metal (nothing on this truck is typically shiny). I pulled the vacuum and steering pump off to find part of the vacuum pump chunked out.

Obviously can't rebuild this one with the Cummins seal kit (4089742), so I started looking for used ones in the classifieds and ebay. Its hard to believe used ones could be so rare.
The standby is a new DORMAN Part # 904810 for $175 plus shipping. Probably a china part, its only saving grace is a lifetime warranty.
I would like to find a factory pump that I can put the $10 Cummins seal kit in, but its hard to justify paying a lot for a used pump that I need to tear apart. Should I just buy the new DORMAN and be done with it? Anyone have an old factory pump they want to sell for a reasonable $?
Last edited by Junked; Jun 2, 2014 at 05:25 PM.
Some duck tape sould get r done !!!! .. LOL
Maybe some bubble gum.... Jbweld ..LMAO!!!!!
Jk , Dorman is not too bad, get the Genuine if you can, expect to replace the droman about every 2-3 yrs ... my experience so far
Maybe some bubble gum.... Jbweld ..LMAO!!!!!
Jk , Dorman is not too bad, get the Genuine if you can, expect to replace the droman about every 2-3 yrs ... my experience so far
Guys, thanks for the advise. I feel a little better about the Dorman. I'm taking care of a few additional items and plan to have the truck down for a little bit, so if anyone reading has a used factory pump they want to sell, shout at me. If not, I'll just buy the Dorman once I'm ready to button it back up. Thanks again.
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