I Have a 2012 transit 2.2 fwd 125ps Euro 5. It had an oil leak from the vacuum pump casing, it appeared to be blowing out? as the mounting face wasn't flat. I pressed it straight and reassembled it. Refitted it and upon driving there was no brake assistance. At first I thought I had forgotten to reconnect the vacuum hose, but upon looking i hadn't. I took the pipe off while the engine was running, and there was no vacuum. I figured I had killed the vacuum pump... I purchased a new one. Fitted this and still no vacuum. There is lubrication getting to the vanes.
Thankyou in advance