4lo first gear speed

[TRDOR]

First post from a newbie so pardon the dumb question, but:

was trying to get out of some mud in 4lo first gear with the rear diff locked on my 5th gen off road. Forgot to upshift afterwards and noticed that I got up to 10-15mph before the transfer box whine was loud enough to alert me. Just wondering if that possibly damaged the tbox. Should I be concerned about over revving the engine? Not even sure how I was able to manage that speed under such low gearing.

 

[DiscoCam]

you're probably fine I wouldn't worry about it

 

[02SE]

The engine has a rev-limiter, which prevents revving the engine high enough to do damage.

Some 4wd vehicles have had a limiter which prevents spinning the T-case too fast.

If Toyota felt the T-case couldn't handle being spun past a specific speed, they would have a limiter for that too.

Your 4Runner is fine.

 

[BobsTrail]

When I'm in low I usually have the trans selector set on 2 or 3 unless I'm doing a hard pull like a recovery snatch or pulling tree stumps, then in 1 only with locker and ATRAC.