In Reply to: Leaking hydraulic pump assembly drain plug bolt posted by Travis Webb (UT) on April 04, 2020 at 19:18:59:
Needs a new gasket (buy make your own any auto supply). or buy tub of gasket "Form a seal"
I hope you meant bottom plug, which would leak all time, or do you mean bolt on side plate. If side hole is problem check your fill level. When Hydraulic cyclinder goes down, the oil level increases in the case, causing the leak out the side bolt.