Pictures of how I Replaced the Oil Pump on the Subaru Legacy Outback 2.2 engine.
GOOD TO KNOW:
- Oil Pump:
- Rotary pump driven by crank shaft. Drives oil circulation for engine lubrication and cleaning.
- Oil Pump O-Ring:
- Small rubber ring. Dealer only as far as I can tell.
- Oil Pump Sealant:
- Permatex anaerobic gasket maker #51813. I got a lot of conflicting advice from a lot of places, including the dealer. The anaerobic sealant will only harden where it is pressed between the two machined surfaces. So if a big glob is on the inside of the engine, inside the oil pump, it can not harden, because air can get to it. So it can not break off and clog anything, or jam inside the oil pump.
Cleaning the Oil Pump
After the oil pump bolts are removed, there is a reinforced area on the side strong enough to pry it off with a screwdriver. It's all aluminum, so easy does it.
Back of the oil pump.
Difficult to remove drain plugs. Big socket and a vise.
Removed screws on rotary cover.
Removed cover, exposing rotors.
Removed pressure relief valve to clean it. There is also a small washer inside the little plunger that I found later.
Rotors in a gallon milk jug cut in half, washing with an appropriate solvent, not gasoline at all. I marked the rotors with a paint pen, but the solvent (Did I mention it was not gasoline?) cleaned off the paint too. There is also a small mark pressed onto each rotor. I took a picture of where those marks were so that I could put the rotors back together in the same positions that I found them.
Picture of the O ring. Note that the old one was not seated properly, and covered with sealant. The factory manual says to put no sealant there.
Another shot of the deformed O ring.
Fixed the part number. I had the bag from the shaft oil seal in the picture.
Installing Crank Oil Seal using big socket.
No rush to seat the pump. The sealant is anaerobic, so it will not harden until installed.
Lubricating the crank shaft with oil. Manual says to also grease the inner lip of the seal (I did not grease it. How long until oil seal failure?).
Oil pump installed. A tiny bead of the sealant gooed out. Still liquid after a week.
- Then I finished my beer.
Chris Ferraro wrote ( 1/6/2010 7:26:14 PM )
Garage wrote ( 1/6/2010 10:14:29 PM )
Charlie wrote ( 1/23/2010 2:19:25 PM )
WD wrote ( 1/25/2013 5:32:35 PM )
michael methvin wrote ( 1/26/2013 3:25:48 PM )
Garage wrote ( 1/27/2013 12:53:53 AM )
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Last modified: 11/25/2013