My 1.5 year old Prestige boiler suffered a blower failure yesterday. I removed the gas valve/venturi assembly from the blower assembly, and removed the face plate of the blower. The fan wheel is in pieces. It's hard to imagine what happened.

I'm obviously going to have to replace the blower assembly. The trouble is that there is one of the 4 screws that seems totally inaccessible, even with a right angle screwdriver.

The annual maintenance procedure specifically says to remove the blower assembly from the burner mounting plate, so it must be possible.

Anyone done this?

Thanks,
Eric