Injection pump

I'm replacing the injection pump on a 924g serial number dda2420 and the timing instructions don't make sense to me. According to the instructions given to me from the dealer I have to set the number 1 to tdc by aligning all the timing marks on the gear train and then put the timing tool into the number 2 injector bore and rotate the engine to 4 degrees after tdc on number 2. The problem I'm having is that when I rotate the engine to get number 2 in the correct spot the timing pin to lock...

Injection pump

Injection pump