I replaced the diaphram in the vacuum pump of my 240d. Within a few months the vacuum pump stopped working again. Could I have put the diaphram or a washer in backwards? A new diaphram has been sitting in the trunk for over a year.

Door locks don't work, and the brake pedal is pretty hard, but the transmission shifts just fine. I hold down the brake and release the clutch to stall the engine. (No wonder it shifts OK)

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69 220D not running
79 240D parts car
80 240D Beater runs everyday
81 300TD temp disabled cooling problem
82 300SD sweet