oll freely. Step 12) Install Rear Cover with Gasket. Step 13) Fill with Extreme Preasure Gear Oil. Grade No. 220 (75W90 or 80W90) I have attached the Service Manual for the Wheatley 110Q-3L (it covers the 110Q, 103Q and 59T as they all use the same components) Comparison We have gone through your pump and insp