Greetings all, on a 1995 E300D with the 606 engine there is a round brass coloured part just aft of the vacuum shutoff on top of the pump. It is blocking access to one of the glow-plugs. None of the manual diagrams, or EPC diagrams label, or mention this device. It has a part # on the top, # 1427 231 008. Should/can this be messed with ?
The pump on the 1995 is unique to that year and model ( 124) the 606 in the 210s have a different pump without this device on top.
So far 4 glowplugs are out, one broken and needing to be removed, and one that can't be accessed without removing the mystery device.

Thanks for any help on this.
Don Tennant

It has something to do with altitude. Maybe it adjusts the pump for operating at a higher altitude. I was unsuccessful finding exactly what it is. I removed mine with a big pipe wrench. (something not right about working on a benz engine with a big red pipe wrench)

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2009 E320 Bluetec 117,000
1995 E300D 306,000 Sold
1996 Ford Taurus LX 130,000 Sold
1985 300TD Still 225,000 Sold
2016 Ford Fusion 24,900

If you're talking about the vertical small cylinder shaped thing, it's the equivalent of the ALDA boost compensator on the turbo engines. I think it's an ACA or something like that.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

Altitude compensator. Don't mess with it.

I don't want to mess with it, just remove it so I can get the one remaining glowplug out.
Regarding your post connerm, you used a pipe wrench on the body of this device ? I measured up the two nuts that seem to hold it on, 22mm and 27mm, with none too big an area to use a open end wrench in.

Thanks for the reply.

Don