I have a Mercedes 300D 1976 Chassis W123. The tumblers in the ignition do not come out the same way as a 300D 77-92. No pin hole. No button on the side to use when in accessory. What am I missing? Plenty of info on the 77-92. Not much for this one.

Everything besides the tumbler I think is the same as a 77. Any guidance would in removing the tumblers would be very much appreciated. I have the key.

Edit-There is a ring besides the plastic cap that has the mercedes part number for the tumblers on it. I have a feeling this must be removed to get to the release holes. But I cant for the life of me figure out how.

Thanks! Tim

Can you post a photo of the setup?

Possibly the '76 used the same as the w115?

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Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22

the pin on the older tumblers is actually on the back of the assembly. i think it can be accessed if you drop the knee panel and reach up inside. if not you may have to remove the cluster.

edit: i've never actually done this procedure. just researched it because i thought i had to replace the tumbler on a 77 240D. the old tumblers i believe were used up to 1980. if you have to replace it they are not compatible with the newer version, which is readily available for very cheap.

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1981 NA 300D 310k miles

Thanks for both your replies. I think your correct and the entire cluster has to come out. Sigh... Although I will double check I did not miss anything on the back.

I did look at the 115 and its not the same although had me going for a few min! Thanks much!

Yes thanks I will post a photo in the am. As I really do not want to take the entire cluster out... Thanks!

Here is all the data you should need.
http://www.peachparts.com/shopforum/diesel-discussion/142232-ignition-cylinder-tumbler-replacement%3B-mixed-diesel-gas.html#post1065596


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__________________
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https://whunter.carrd.co/

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
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1985 300SD
1983 300D
2003 Volvo V70

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Note: If it is a 1976, it is a W115.114 chassis.

http://www.peachparts.com/shopforum/diesel-discussion/321775-welcome-fleet-1976-w115-114-300d-dark-green.html


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__________________
ASE Master Mechanic
https://whunter.carrd.co/

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
2003 Volvo V70

https://www.boldegoist.com/

Thanks so much allot of great info there. I just woke up but looks like everything I was looking for. I thought it was that chassis because that's the number on the vin and the model stamped on the plate. Where is the chassis number just for my own future reference? It was manufactured in late 1976. I will post pics anyway. Thanks again. Edit - mine is white. Great info. thks again.

Sorry got pics my light shot software is acting up will have up soon

Assembly Screenshot by Lightshot
Top view Screenshot by Lightshot
Tag: Screenshot by Lightshot

Thanks sorry about earlier picture issues this should be working.

Obviously I removed the black cap etc. Don't understand where the oil is from..

From the info you posted I found this, which I think is the only route I have...

http://www.peachparts.com/shopforum/3143422-post9.html

Thanks so much for the detailed info.

From your PM, I tend to agree.

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__________________
ASE Master Mechanic
https://whunter.carrd.co/

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
2003 Volvo V70

https://www.boldegoist.com/

Thanks I appreciate that. I just needed to confirm I was on the right track before I continued. I love my old car not, ready to giver her up yet!