Or you can do like we did at the SO last year with no tool. You have one big guy push down on the valve spring retainer with a big set of pliers and one guy putting in the two little keepers. Obviously the same method can be used to take them out. It's a bitch but it gets the job done in a pinch. You can also compress the lifters(HLA)'s with a bottle jack and the bottom of your trailer, but that's another story.
Headwork in the Econolodge parking lot at 3am, I should write a book about it.
