Topic: Help!!! I put gear oil in restrict pin w56 4runner 85

[emsvitil]

Oh.. crap....  ..  all this time I thought that thing was a pressure sensor of some kind.  So, it's reverse switch? 

How does it work?  What activates it? 

Gnarls. 

The reverse shift fork rod activates it.

[redneckcustoms13]

What he said. Just a normally open switch.

[Willard]

Hey Willard,

Yeah... over the past 40 years or so, I've removed successfully a good number, probably not a butt load, of stuck bolts, twisted off bolts, rounded nuts, studs, and set screws with a chisel and hammer.

On my tranny, the drain plug was already semi-rounded from previous owners, so when I started I figured I may have trouble.  With the amount of torque I applied to it with all my tools, I was stunned that I could not turn it.  I figured there is no way hammering on it with a chisel was going to make it turn.  When I chipped a little bit of the tranny case around the plug hole I decided that fubar'ing it was not worth getting it out at that time.

Gnarls.

Yes at that point I would have been discouraged as well lol. I have also found that a small impact with air hammers makes a world of difference in seized bolts and related threaded components.


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[mudmaster]

I've had success with an air hammer too with the pressure turned down.

[Gnarly4X]

Yes at that point I would have been discouraged as well lol. I have also found that a small impact with air hammers makes a world of difference in seized bolts and related threaded components.


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Yeah... If I were to take a risk and try to remove it.  I would take my Dremel tool and cut small slot in it. Then use my air chisel, or impact tool to see if I could get it to turn??

Gnarls.

[joeyf]

Just weld a socket onto it. Works for me every time. Don't go crazy on the welding, just good tacks around the hole socked. The heat from the tacks usually break's it loose enough to take it off by hand.

[:)bestgen4runner]

Just weld a socket onto it. Works for me every time. Don't go crazy on the welding, just good tacks around the hole socked. The heat from the tacks usually break's it loose enough to take it off by hand.

Don't agree with this.
Aluminum case not a good idea in my opinion.

[joeyf]

If you are not comfortable with your welding skills I would agree with you to. But knowing the two metals will expand at different temps, it's easy to see you just need small tacks to break the plug loose. Your not welding the trans just using the heat to transfer to it. Just a suggestion, it's something I was taught.

[Gnarly4X]

The tranny was at ambient temperature when I tried to remove filler plug, probably around 65 degrees that morning.  I *might* try to see it if will break loose after driving the truck on a hot day this summer.  The plug is steel and maybe the alloy case will be just hot enough to expand and allow that plug to turn.

But for now, I see no compelling reason to risk fubar’ing my transmission (I have already chipped the case), then having to pull it and take it to the shop and have the case replaced and then rebuilding it - I can painfully imagine an easy $1500 to $2,000 bill!

I think welding a socket on the plug is an option… but I agree with :)bestgen4runner, for ME, I would definitely not brag about my welding skills, although I was stick welding when I was about 14 years old. It would be my luck to touch the case with my wire feed and blow a hole in it!! 

There is not very much space between the plug and the case to get even a tack bead on the plug.  Maybe a very skilled heliarc welder could tack a socket on it.  I could see maybe welding the end of a ˝” extension on the very end of the plug,   But, with amount of torque I applied to that plug and it still not moving, it will probably take some heat to break it loose.

That's just my opinion - it may be worthless.

Gnarls.