slosteve Posted May 28, 2017 Share Posted May 28, 2017 '65 Riv power steering pump. I removed the high pressure fitting on it to make sure it was clear and there is an 'o' ring that fits in a groove right behind it. The book says to replace it and as mine is a bit stiff that is what I'm trying to do. Can't find one of the correct size. Went to my 'best' parts store in town and they have a larger & smaller one. Can anyone tell me the correct size for this thing? Steve Link to comment Share on other sites More sharing options...
JZRIV Posted May 28, 2017 Share Posted May 28, 2017 (edited) Steve, Do you have a hydraulic repair shop in town? Typically they will have a full selection of most sizes. If you have a Fastenal store check with them also. I'm sure its nothing special. If none of the above tell me the OD as close as you can measure and the approximate thickness of the ring you took out. Is this the oring you are talking about? Edited May 28, 2017 by JZRIV Add pic (see edit history) 1 Link to comment Share on other sites More sharing options...
slosteve Posted May 28, 2017 Author Share Posted May 28, 2017 A picture is worth a thousand words, Jason. The o ring in the photos below is what I've been looking for in vain. I found it in the groove just inside the hole (where the screwdriver tip is). This is a rebuilt pump. Now I know that I need a different one. Thanks. Steve Link to comment Share on other sites More sharing options...
Barney Eaton Posted May 28, 2017 Share Posted May 28, 2017 I have had good luck getting "O" rings at a bearing company they also handle hydraulics. The place I deal with is quite helpful and the price is reasonable...you can't buy 1 the smaller ones come in a bag of 10 but then I have spares when I drop one. Link to comment Share on other sites More sharing options...
JZRIV Posted May 28, 2017 Share Posted May 28, 2017 Steve, That ring is only meant to be removed when the pump is removed from the reservoir. I believe that seal is actually a quad ring (square oring). Since you have the pump out on the bench you should disassemble and install a seal kit. When you buy the kit you'll get that seal you are looking for. I did a tech article on rebuilding a pump in Riview vol 26 No 5. 1 Link to comment Share on other sites More sharing options...
slosteve Posted May 29, 2017 Author Share Posted May 29, 2017 More pictures, more knowledge. My pressure fitting did not have any o ring on it like the large circumference one on yours. So my first thought was that they substituted the skinny one in place of it. Now I know that I need two different animals. Thank you again, Jason Link to comment Share on other sites More sharing options...
60FlatTop Posted May 29, 2017 Share Posted May 29, 2017 I have one drawer in my workbench with things that I should not have taken apart. I will see if I can get some pictures of the stuff in there today. Bernie 1 Link to comment Share on other sites More sharing options...
PWB Posted May 29, 2017 Share Posted May 29, 2017 Bernies Junk Drawer, now on paper back New York Times bestseller (Should be!) Link to comment Share on other sites More sharing options...
Zimm63 Posted May 29, 2017 Share Posted May 29, 2017 2 hours ago, 60FlatTop said: I have one drawer in my workbench with things that I should not have taken apart. I will see if I can get some pictures of the stuff in there today. Bernie Only a drawer? Link to comment Share on other sites More sharing options...
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