INJURED & 2 CO-WORKERS WERE INSTALLING A PUMP. HE LIFTED THE PUMP OVER AN 8"" PIPE TO MOVE IT INTO THE WORK AREA. THE PUMP BEGAN TO FALL & HE GRABBED IT. HE FELT A PAIN IN THE RIGHT SIDE OF HIS GROIN. INJURED CONTINUED TO WORK UNTIL SEEN BY HIS PRIMARY CARE PHYSICIAN FOR ANOTHER MATTER AT WHICH TIME IT WAS DISCOVERED HE HAD A HERNIA. HE BAGAN LOSING TIME 11/14/05 FOR HERNIA REPAIR.