F1098

I just did the radiator on my 2008 RX400h. It had 137k miles and the passenger side end cap had a 6" crack. Tips: Bolted to the center of the upper radiator support, the vertical bar can be unbolted. Sharp screwdriver to pop off plastic cap to reveal a nut. remove the nut and the other 5 bolts and the upper radiator support will come off. This was mentioned above. After disconnecting the radiator hoses and removing fan assembly, I used a pry bar the lift the lower radiator support (the radiator and AC radiator are bolted to this), and put a rubber flex disc (from a job on my wife's car) between the frame and lower radiator support bar. Getting to the two 12mm bolts on the underside of the radiator support was a pita, I had to pull the lower radiator support bar rearward pretty significantly to access bolts. The passenger side lower bolt was the most difficult by far The lower bolts attach to a square nut mounted in the radiator. The passenger side lower bolt was spinning but not unscrewing. The plastic housing had cracked and the square nut was spinning. It looked like the coolant that had dripped down had corroded the threads on the bolt and nut. I just pulled the radiator off that last nut and used pliers to get the square nut loose. I had the most difficulty reinstalling the hose clamps. The channel lock pliers couldn't squeeze the clamp tabs far enough. I finally googled it and found this video: I got the clamps to lock open and they were a breeze to install.