Gearbox oil drain plug defective /Alternative screws ?

It should still loosen with the correct hexagon. Then buy a new one. What is your problem?

Hi,

replace or leave as is. These are your alternatives. At the latest at the next oil change I would make the new if it seems too bad to you. You can't see the condition too well in the picture.

If not a previous owner / wrench has tightened the thing like stupid you get the actually quite well.

When I did not have a suitable 6 Kant nut I got it on my 914 with a screw and two countered nuts as a tool. But I don't know if the wrench size was 17 or 19.

Greetings

In any case, work with a proper nut, do not work with an Allen key from the set.

Hello Johannes,

Congratulations on the 911G and welcome!

Everything has already been written. I would directly replace both screws, there seem to have been real specialists at work again . Gibts on the net as a set, for example here. I have written here several times. And here is a small "tutorial":

Post

RE: Shell Spirax MB90 - verkauft hier jemand eine Getriebefüllung?

[…]

Zuerst die Einfüllschraube versuchen zu öffnen. Wenn die sich nicht öffnen lässt, und du das Öl schon abgelassen hast, ist die Weiterfahrt sofort und auf der Stelle beendet.

Also:

1. Warmfahren. Mind. 20km. Das Getriebeöl fließt kalt dermaßen schlecht.....und du willst ja auch den ganzen Dreck rausspülen.
2. Aufbocken, am besten auf der einer Bühne, dann steht er halbwegs gerade zum nachmessen des Füllstandes.
3. Öleinfüllschraube testen
4. wenn erfolgreich, mind. 3l. Gefäß bereit halten,

…

Schulisco

Sep 20th 2021

There is also a video linked and shows how it works. Make sure to use the right gear oil. You have a late 83, so it should be sdhon MJ84 and then already have the G50. 915 and G50 get different oils afaik.

Remember: Transmission oil is much more viscous than engine oil. Now at the temperatures that must first be warmed up before you can fill it!

Good luck!

Greetings, Thomas

Quote from Schulisco

You have a late '83, which should be sdhon MJ84 and then already have the G50.

G50 is only from MJ '87!

Greetings

Rolf

Quote from Elefant93

Quote from Schulisco

You have a late '83, which should be sdhon MJ84 and then already have the G50.

G50 is only from MJ '87!

Greetings

Rolf

Of course! Zefix. I think I have to buy a Carrera too, so that I finally learn this!

1. FIRST unscrew the filler plug!!!!!!!!!!!!!!!!!!!!!!!

Would be quite stupid. Gear oil is out -- and you can't get any more because the filler plug can't be unscrewed............................................

2. what works:

Get a piece of 17 hexagon at a metal shop -- weld it on -- start turning.

I've done it that way many times.

3. oil out?

Take off the cap here:

Quote from michelko

At the latest at the next oil change

Until then it is stolen, sold, etc..

I seriously wonder how often some people have the drain plugs in their hands.

At Ford -- where I learned -- most transmissions had no drain plug at all....

I don't know/have a single customer who gets more than 2000-3000km a year done....

Quote from Ruf CTR

3. oil out?

Take the cap off here:

Why?

If you can't get the drain plug open after all -- then just unscrew the cover.....