I had a 2006 4Runner that I bought used in South Texas (where the defrost was likely never used) and brought it home. The first time that the rear defrost was used and then the car was parked and the glass allowed to cool back down - the rear glass disintegrated. Turned out to be a know issue...
Another vote for the Tool Guy Republic filter housing tool. This is the best tool for the job. The stress is uniformly distributed to all of the flats around the circumference instead of a few of the tabs. This one is machined and has close fitting tolerances.
Fasteners torqued to 26 ft-lb. And new OEM cap assembly installed:
Re installed fan/shroud and coolant reservoir. Refilled oil and started to check for leaks.
All good, so skids / engine covers back on and as good as new. I still can’t imagine how this happened. Was it the PO? Was it the...
I cleaned up the connection area to prepare for installing the new adapter. The two orings fit into glands in the engine timing cover. The mating surfaces on the adapter are flat. As the FSM states, I lightly coated the new orings in oil and installed them in the glands - they stayed in place...
To get to the adapter fasteners I had to remove the fan (4 12mm nuts) and fan shroud (5 10mm screws). The coolant reservoir is attached to the shroud and shares some of those fasteners. I just set the reservoir out of the way on the engine.
The adapter is held on the timing cover by two bolts...
My first “hmmmmmm” moment was when I noticed an aftermarket Dorman metal cap. Upon removing the cap I beheld the carnage. I also ordered a new OEM plastic cap. (And the two o-rings that go between the new adapter and the engine front timing chain cover.)
Yeah - my guess is that the OEM plastic cap was damaged due to being previously over torqued and/or a low quality removal tool. Once damaged someone definitely lost their zen and got way too aggressive removing the broken cap.
Sewell Lexus of Dallas came through and this arrived today: