Heat Shield Studs......??

My heat shields have corroded around the stud mounting area rendering the fastening studs useless. No big deal, remove nut (carefully, chase threads, apply anti seize, reassemble using an appropriate fender washer. As luck and the laws of the Universe preside, the last bolt didn't break but it did shear out of the body. Any ideas as how to replace it?
The way I see it, I'll have to pull up the carpet, drill a hole where the stud was and use a bolt.

 

rip the thing off and toss it
Save yourself the headache

 

I had the same issue. The plan is to JB weld a new stainless bolt in its place whenever I feel like spending truck maintainance time getting down there to degrease and prep it.

JB weld should be plenty strong enough to hold up a heat shield.

 

Great idea! I'm going to try this.

 

It would not be a concern to run without heat shields? Maybe not so much in these trucks given their height compared to a typical car.

 

Look into rivnuts or plusnuts. I love using them for little custom fab projects. Super hany threaded inserts that you can use to start with a clean slate...

 

mine are shot too- been pb blasting them

 

Too late now but I heated all mine up with a torch and nuts came right off.

 

I think you're referencing the heat shields around the actual cat itself. OP's is the heat shield between the body floor and cat. See below pic for reference stolen from this earlier post today.

 

The two bolts and nuts holding the heat shield clamshell on corroded away on my '09. Started getting the rattle about a year and a half ago, then it changed pitch and I figured it meant something was going to fall off.

I bought the replacement bolts and nuts from the dealer for a grand total of about $4. Replacing them took about ten minutes since I had to figure out a way to get a ratchet on the bolt head on the one closest to the frame rail. Zipped the lock nut down, no more noise.

I don't see why people just remove things they can fix. We have enough roadside fires around here with cigarettes I don't need to start one driving through tall dry grass.

 

Here's the part numbers for that heat shield.

 

Think we're getting off track here. All I was trying to do earlier was point out to Stelcom66 that OP's heat shield in question is the one between the floor and cat, not the two clamshells that sandwich the cat (since Stelcomm66 questioned whether there was a (road fire hazard) concern about removing the clamshell heat shields due to the increased ride height of the truck compared to a car).

 

I used a fender washer and self tapping tek screw and drilled the screw up thru the bottom of the floorboard to reattach mine. Done.

 

Oh ok, yes - that's what I was referencing.

 

Just ran into this issue on my 3rd gen. The heat shield had gotten around the nut. When I went to remove the nut, the entire stud came out. It looks exactly as pictured above. I will probably use JB Weld. Any reason I shouldn't or are there any better solutions? For reference, this is on the passenger side. Getting a rivet gun in there is likely going to be impossible without removing the cat.

 

I just tried to fix this same issue. I have no torch. Sprayed it a couple times and waited. Still, when I tried to loosen I could feel the whole stud twisting like it's about to break off. Called a Toyota dealer and they have no part number for the stud, which I had thought would be something pushed down through the sheet metal floor from beneath the carpet. They said they think it's welded on. They have the part number for the nut, but no measurement for the nut so I can know what to buy for a stud. They suggested I bring it into the dealership, which I know better than to do.

I guess we are supposed to go to the hardware store and buy different size metric nuts to try, then buy what we really need for a stud?

 

I believe they are M8 course (10mm head/nut diameter). The studs are spot welded to the body, replacing them is either silly expensive at the dealer, or a "figure it out" DIY proposition.

If your stud breaks off, you can use whatever size bolt and nut you want to replace it, attached however you want. If it has at least a few usable threads left attached to the truck, find an appropriate sized male/female standoff and loctite it to the remaining stub.