I just replaced one on my 930, (87), and it was real tight but it went on with grease and pulling. The way I did it was to put the little clamp on first, then turn the boot inside out, grease it well, then pull the big end over the axle and pull like hell. Once the little end slips on then just pull the big end over it and you are done. Don't forget to put the clamp on first. (Ask me how I know this).