power steering box leak?

Morning all, I've tried a search but to no avail, and I cant post photos so i'll be as descriptive as I can. I have a four bolt power steering box on the 110. Looking at it from above, to the left of the main body is a manifold where 3 hydrolic pipes enter, 1 from the resevoir,1 from the pump and 1 that returns along the right hand side and back into the box.(are you still with me?) Just above where this pipe goes in, the body i has a flat area about an inch square. Mine is very rough on the face and in the corner on the top edge is what looks like a grub screw. Im not sure if that what it is but when the engine is on and the pressure builds up, its leaks from this screw. Firstly is it a screw or just a flaw in the casting and can i just clean it up and stick some chemical metal on it. Cheers

its a plug used to block end of drilling ,its not a serviceable part and ive nver seen one leak

jamesmartin said:

its a plug used to block end of drilling ,its not a serviceable part and ive nver seen one leak

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Thanks James, i'll try cleaning and sealing it then. That was a paddocks re-con 3 years ago! Any idea if its pressurised? I'd suppose it is.

the housing it runs to contains the hydraulic double acting piston rear side is fed internally that pipe feeds front side ,if i was going to seal it id drill it out fit steel plug and braze it in ,normal pressure can be 850 psi ish ,but anythings worth ago first

Ive just cleaned it and slapped some chemi metal on it. Ill see how it goes and if no good then i'll follow your advice. Thanks again