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May I suggest revisiting PASB 2011-1 for a discussion of rebuilding Ross steering gears. It discusses (p2-3) the Alemite zerk found on Late 36-thru 38 PA’s, that they were intended to oiled, and that Alemite currently markets a lever-operated oil gun for that purpose. Note that the Ross box is vented (p4-5), so oil can be pressure delivered to the box until it exudes from the vent hole. After installation of modern lip seals, the box operates on transmission weight oil without leaking.