I use a H. F. puller too, and it does the job.  Could be you got one
with a defect.  Don't they offer a lifetime guarantee?

-Dana-

sdelasal@yahoo.com wrote:
>
> Okay ...I just busted one 3-leg puller (cheapo from Harbor Freight, I know)
> trying to get the diesel injector pump sprocket off.
>
> As usual, Bentley makes it all sound so simple what with all the VW tools
> being available. In the real world what do you guys do?
>
> I tensioned the thing up with the puller, lightly tapped the sprocket in a
> variety if places and said nice encouraging things to it ...but, ping....my
> puller breaks!
>
> Steve