1FZ-FE timing cover (back) 12mm hex bolt torque spec?? HELP

[LC95]

Anybody happen to know the torque spec for the 12mm hex bolt on the back of the 1FZ-FE timing cover? Can’t seem to find it anywhere in the FSM or online. It’s part of the oil system in conjunction with the oil pump. Also I believe it had very little factory sealant on afew threads prior to removal , will loctite work as well?
Any info at all would be greatly appreciated, only thing left keeping me from putting the cover back on.

 

[Kernal]

As you mentioned, likely had a factory applied sealant/locker on it based on it's location and purpose (plugging a hole left over from
a machining process).

Was it coming loose or did you just take it out while cleaning up the cover??

Is it a tapered plug and can you post a photo showing the threads or measure the diameter, threads, length?

FWIW other plugs in the engine (block drain, oil pressure sensor) are BSPT (British Standard Pipe Taper) threads.

 

[LC95]

It wasn’t loose, I had removed it to clean up some minor oil sludge build up inside. Not sure what the thread pitch is. I know it was 12mm hex socket but it resembles/ acts like a differential fill plug by the sealant only on 2 threads and it protruding few threads when full tighten down if that makes sense.

 

[LC95]

As you mentioned, likely had a factory applied sealant/locker on it based on it's location and purpose (plugging a hole left over from
a machining process).

Was it coming loose or did you just take it out while cleaning up the cover??

Is it a tapered plug and can you post a photo showing the threads or measure the diameter, threads, length?

FWIW other plugs in the engine (block drain, oil pressure sensor) are BSPT (British Standard Pipe Taper) threads.

As you mentioned, likely had a factory applied sealant/locker on it based on it's location and purpose (plugging a hole left over from
a machining process).

Was it coming loose or did you just take it out while cleaning up the cover??

Is it a tapered plug and can you post a photo showing the threads or measure the diameter, threads, length?

FWIW other plugs in the engine (block drain, oil pressure sensor) are BSPT (British Standard Pipe Taper) threads.

I’ve been looking everywhere but can’t seem to find any info maybe there’s a term / name for it that I’m missing?

 

[Kernal]

Not sure what your question is above?

There's a bunch of choices for a sealer/thread locker, one that's good for pipe threads and resistant to oil is Loctite 565:
There are others sealants/lockers,, someone else might have their favorite.

For the torque spec, there are tables and calculators for the size of the bolt (length of engagement, width, threads, etc), steel into steel, steel into aluminum, type of aluminum, etc etc, but you don't need clamping force for that pipe plug, so with a thread sealer/locker best guess is snug, get it back to where it started (original level/depth)??

It would help to know if the plug/hole is tapered or straight, if it's tapered it will snug up and not want to go much
deeper than how you found it, if straight then you'll want to put it back about the same depth as you found it but
it may need a thread locker more so than a taper plug.

If you put the plug back in does it bottom out in the hole or does it go about to the level shown in the first photo in Post #1 by snugging it up or??

Important to completely remove all traces of oil from the threads of the hole and the plug using Acetone but not just one quick spray from a can. For threaded holes I use pipe/tube brass brushes ie: push in, spin around, spray, clean the brush, repeat, repeat, etc. That might sound OCD but IME if you want something like that to stay sealed and tight you need to take some time cleaning the threads before applying the sealant/locker (see the Technical Data Sheet below):

Wait for others will chime in.

https://datasheets.tdx.henkel.com/LOCTITE-565--en_GL.pdf

 

[LC95]

Not sure what your question is above?

There's a bunch of choices for a sealer/thread locker, one that's good for pipe threads and resistant to oil is Loctite 565:
There are others sealants/lockers,, someone else might have their favorite.

For the torque spec, there are tables and calculators for the size of the bolt (length of engagement, width, threads, etc), steel into steel, steel into aluminum, type of aluminum, etc etc, but you don't need clamping force for that pipe plug, so with a thread sealer/locker best guess is snug, get it back to where it started (original level/depth)??

It would help to know if the plug/hole is tapered (hard to tell from the photos). If it's tapered it will snug up and not want to go much
deeper than how you found it.

Others will chime in.

Important IME to completely remove all traces of oil from the threads of the hole and the plug using Acetone but not just one quick spray from a can. For threaded holes I use pipe/tube brass brushes ie: in, spin around, spray, clean the brush, repeat, repeat, etc. That might sound OCD but IME if you want something like that to stay sealed and tight you need to be a bit anal about cleaning the threads before applying the sealant/locker (see the Technical Data Sheet below):

https://datasheets.tdx.henkel.com/LOCTITE-565--en_GL.pdf

yeah I’ll keep an eye out hopefully somebody has ran into this concern already and what resources or resolutions they’ve had. yeah thread sealant type and or info regarding torque spec as well. The bolt does taper down and doesn’t reach the bottom threads of the timing cover. I can find the thread pitch tomorrow morning once mu gauge comes in. But I really do appreciate the response back and all the info you’ve given and also regarding the loctite 565.