Last year when I was rebuilding the engine in my wifes 240D, I had read about the proper way (Larrys post) too put on the harmonic balancer and it did take a long time , put it on, take it off, put it on, take it off, put it on, take it off, put it on, take it off, put in on....Aaaahh, the pins go in ..finally .... You get allot of practice with the puller

Steve