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Most of the parts in your picture are governor parts apart from the springs. This is just musing, if you are no longer leaking diesel from the pigtail pipe, you do not have too much of a leak from the plungers. The pigtail is the leak-off from the pump cam box and the only way for diesel to get into the governors is through the seal between the two. We always were told to check the governor oil level once a week and drain off any excess liquid, diesel/oil mix, down to the level, then change the oil every time the engine oil was changed. I realise this was when the tractor's were working every day. Some tractors filled the governor in that time others did not. I am wondering whether the diesel shop filled the pump cam box with Fusus oil (injection pump test oil), which is used to test injection pumps on the rig and also for storage. The cam box, being over full, then leaked that into the governor and out of the pigtail initially, and once you drained it, the pump has now settled down to a more normal leak pattern. This is a possibility, perhaps you should run a few more hours and see what happens before taking the pump back. If diesel continues to pour from the pigtail and fill the governor, then you know for certain you have a problem. Just my thoughts. Brian
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