Fighting with my transmission fill plug…

[john walker's workshop]

Post 16. Gets them off right now.

[REVerend]

Originally Posted by john walker's workshop

Post 16. Gets them off right now.

Unfortunately I don’t have a welder… for the moment I’m just heating it up a bit and then spraying penetrating oil on it every day. Will take another shot at the fill plug this weekend.

This evening’s adventure is cleaning up and replacing some shims in the distributor which has come with its own set of mysteries.

[john walker's workshop]

Bee's wax sometimes works better than some penetrants. Get the plug real hot and swab it all around.

[A930Rocket]

^^^ I’ve heard crayons work as well. Is that true? I suppose it’s a wax, like beeswax?

[Matt Monson]

Another trick is to quite literally hit it with a mallet. You need to break up the corrosion to get it to let go. I use this one all the time following heat to shatter the thread lock that has been applied to ring gear bolts (which are also torqued to around 150ft/lbs.).

[stownsen914]

I like Matt's suggestion. Stick a drift in the middle of it and give a few moderate hits with a hammer.

Don't be afraid to heat it with a propane torch. It won't hurt anything. A heat gun won't do anything. You can try alternate cycles of heating the plug and the surrounding area, and apply more penetrant while it's hot. It will eventually give.

[faverymi]

I have heated the case with MAP torch.

With the socket already in I have shock it with Bio Freeze (liquid nitrogen)

Apply torque in either direction. Everything comes out effortlessly

Basically same technique you use when pressing bearings

No brainer

[spoke]

Originally Posted by REVerend

Will take another shot at the fill plug this weekend.

Like you I had a difficult time with the drain plug. Got it loose with a breaker bar but before removing and draining the transmission I thought I'd make sure the fill plug will come out. Good luck.

[REVerend]

Originally Posted by spoke

Like you I had a difficult time with the drain plug. Got it loose with a breaker bar but before removing and draining the transmission I thought I'd make sure the fill plug will come out. Good luck.

I haven’t even touched the drain plug yet…

[spoke]

Good luck with the fill plug. Have you tried the drain plug yet just to see if it too is seized?

[REVerend]

Originally Posted by spoke

Good luck with the fill plug. Have you tried the drain plug yet just to see if it too is seized?

Haven’t touched the drain plug apart from giving it a spray of penetrating oil.

[Magyar Kiwi]

Hi
The tapered threads of the plug, provide the seal which stops the trans oil from leaking out.
This means that chances of getting penetrating's oil in are not so good.
Breaker bar and pipe extension is first step.
Post 16 is second option.
Cheers

[pmax]

Bet #16 is due to the heat not the socket.

[REVerend]

Originally Posted by pmax

Bet #16 is due to the heat not the socket.

Yeah I imagine that helps… last night I got it cleaned out and it looks like it’s beginning to round out which means welding it may be the only option

[proporsche]

ok..i wonder if you have the right socket?? It should really look like this one...so my suggestion get the it and with a bar it will come off

Ivan

[83_Silberpfeil]

Hey REVerend --- feel your pain. Looks like you tried most suggestions. I suffered this same issue two years ago w my 83 SC. The car was lifted on jack stands. I could barely reach in there to attach the allen and an extension. But, no way to get leverage w/o risk shaking or tipping the car.

In the end I paid my local air cooled tech to do it.

W/O a proper lift, it would have been very difficult and quite risky/dangerous to try to remove myself.

Here's the post/thread, starting from Post #20....


https://forums.pelicanparts.com/porsche-911-technical-forum/819484-fill-plug-915-gearbox-has-blocked-clearance.html

Good luck!!!

Originally Posted by REVerend

Yeah I imagine that helps… last night I got it cleaned out and it looks like it’s beginning to round out which means welding it may be the only option

[REVerend]

Originally Posted by proporsche

ok..i wonder if you have the right socket?? It should really look like this one...so my suggestion get the it and with a bar it will come off

Ivan

I didn’t realize there was a specific socket and was using 17mm hex bit

[REVerend]

Originally Posted by 83_Silberpfeil

Hey REVerend --- feel your pain. Looks like you tried most suggestions. I suffered this same issue two years ago w my 83 SC. The car was lifted on jack stands. I could barely reach in there to attach the allen and an extension. But, no way to get leverage w/o risk shaking or tipping the car.

In the end I paid my local air cooled tech to do it.

W/O a proper lift, it would have been very difficult and quite risky/dangerous to try to remove myself.

Here's the post/thread, starting from Post #20....


https://forums.pelicanparts.com/porsche-911-technical-forum/819484-fill-plug-915-gearbox-has-blocked-clearance.html

Good luck!!!

I have it on my quickjack, not as good as a full up lift but it’s fairly solid. Additionally I added wood blocks front and rear which make it very solid. Clearance to get at it isn’t terrible either from below or through the left rear wheel well.

I’m gonna talk to a mechanic about it soon.

[83_Silberpfeil]

Awesome! That sounds much more stable and safe than just jack stands.

Originally Posted by REVerend

I have it on my quickjack, not as good as a full up lift but it’s fairly solid. Additionally I added wood blocks front and rear which make it very solid. Clearance to get at it isn’t terrible either from below or through the left rear wheel well.

I’m gonna talk to a mechanic about it soon.

[83_Silberpfeil]

Originally Posted by REVerend

I didn’t realize there was a specific socket and was using 17mm hex bit

Yeah that's what I used as well.

Can you discern the socket that Proporsche uses? What is distinct/special? Looks like a typical 17 mm, no?