Use the following steps to perform this repair:
Step 1: Place the vehicle on a frame bench and begin measuring the extent of the damage. See Fig. 1 and Fig 2.Step 5: Clean and expose all spot welds as outlined in the Toyota Technical Information System (TIS) removal document. Be sure to read the TIS carefully and follow its guidelines (it can be way too easy for even a veteran repairer to stray from these guidelines and make the mistake of unnecessarily removing some of the spot welds). I suggest that you mark all spot welds on the car as well as on the data sheet.
Step 6: Mark the outer rocker at the sectioning location and cut.
Step 7: See Fig. 7. Remove this entire piece as a single unit. (This is another reason why you need to pay close attention to all repair instructions. If you don't remove the entire piece as one unit, you'll waste time removing the damaged parts separately).Step 9: Apply weld thru prime to all bare mating surfaces. See Fig. 9.
Step 10: Measure the thickness of the metal.
Step 11: Weld some scrap metal from the removal process and perform a destructive test. Note that I welded a number of scrap pieces at different thickness settings. The welds looked good, but all failed the destructive test. I discovered that there was not enough amperage on the circuit the welder was plugged into. I then moved the machine to a different plug (85 amp circuit) where I was able to get a good weld that was able to pass a destructive test.
Step 12: Test fit the inner B panel reinforcement. See Fig. 10.Step 13: Weld the inner B panel reinforcement to the outer rocker reinforcement. I reused an old one but recommend that you use a new outer rocker panel.
Step 14: See Fig. 11. Weld the upper portion of the B panel reinforcement to the roof panel.Step 15: Apply epoxy primer to all bare metal. As outlined in the TIS, I mixed up some epoxy primer in a cup and applied it with cotton applicator.
Step 16: See Fig. 12. Weld the outer rocker panel reinforcement to the vehicle. Use only an open butt weld since Toyota does not recommend a butt weld with backer on any welded joints (as per Toyota's Collision Repair Information Bulletin #176 revised).Step 20: Apply weld thru primer to all mating surfaces.
Step 21: Apply semi rigid foam as outlined in the Toyota Repair Manual. See Fig. 16.Step 22: Weld in the outer access panel.
Step 23: Set the outer B panel and rocker cover on vehicle a mark the cut location.
Step 24: Cut the panels using the cut and join technique. See Fig. 17 and Fig. 18.Step 25: Weld the outer panel with stitch method and squeeze type resistance spot welding.
Step 26: Dress all the welds and apply epoxy primer to the bare metal.
Step 27: Apply body filler.
Step 28: Complete the repair with the refinish.