Wedge TR7 Oil Pump Leak

[johnrip]

For the third time in three years, my oil pump is leaking. Last time I replaced all the o rings, and it lasted about 3000 miles. I was thinking about buying a whole new pump, but last time I tried that it was made in Pakistan, was low quality and leaked immediately. Does anyone know if anyone sells quality oil pumps? Any suggestions?

 

[TR3driver]

Where does it leak?

If it's the big O-rings, then the first thing I would try is facing the pieces a bit, to see if the surfaces are flat. With care, you can do that with a fine flat "machinists" file; but it's probably better to lay some fine sandpaper on a flat surface (like glass or fresh MDF) and rub it on that in a "figure 8" pattern. Removing a small amount of metal will also put more force on the O-rings for a better seal.

You can also get "quad seal" O-rings from MMC that might help.

In my case, the leak was actually the pressure relief plunger, and a kit of new O-rings from LDPart fixed it right up.
https://www.ldpart.co.uk/shop/shop....at=19&sid=sid0328b36bd0e4a462760c69e5e57a7d3b
I smeared some Permatex on the O-ring just to be sure, but it probably wasn't needed.

 

[johnrip]

Randall,
Thanks for info. I have new orings. Am I correct that the thinker ring is pump to block, and the thinner one is internal in the pump? Also, if I do this with the pump on the car, how do I prime the pump? Thanks, John