Power steering pump reservoir O-ring???

So I cleaned the screen in my power steering reservoir awhile back. Put the reservoir back on, and it's been steering great. One issue though is that there has been a slow leak from where the reservoir sits on the pump. Don't know if I lost an o-ring somewhere in the process or what.

Anyone have a breakdown of the reservoir and the pump?

I know there is an o-ring that goes in a grove on the piece from the reservoir that slides into the pump, but what about at the actual meeting surface between the pump and reservoir?

 

http://www.villagetoyotaparts.com/showAssembly.aspx?ukey_assembly=343625
Found a diagram of it. Showing an o-ring between the two, PN# 44362A, but doesn't show if it sits on the grove on the nipple coming out that goes into the pump, or at the actual mating surface.
I have an o-ring on the grove, but not at the mating surface.

 

T'would appear there is only one o ring between the two, perhaps yours slipped out of its groove slightly on installation? It's a pretty easy thing to happen

 

My 99 FSM only shows one o-ring.

 

What really threw me off was that there was a sliver of an o-ring at the base when I took it off. Which made me think there was definitely one there at one point, but now it has vanished. But right before I installed the reservoir, I double checked the existing o-ring, and it had a sliver cut off. Seems like it was pinched off while putting it back on I assume.

We'll see how well it holds fluid this time. If still leaking, I'll take it back off and throw on a bigger o-ring in the grove.

 

This o-ring is a one-use only, like most o-rings on our trucks. Don't re-use the old one unless you have no choice.

 

Just get a new one from the dealer, like $2 max

 

Did you ever end up ordering this o-ring or using a misc one? I took my reservoir off to clean it and now it's leaking too. I suspect it's also this o-ring.

 

I had the same problem...I just used a generic o ring from an assortment kit I have. I even buggered up one when reinstalling, I found it to be beneficial to make sure and lube up the oring before reinstalling the reservoir to minimize "drag" on the ring while sliding it in.