Hi, couldn't find specifics by searching. I have 81 240d with oil oozing from bottom of instrument cluster, so probably need to pull cluster and examine, but until then, as a band aid, I wish to plug the line at the filter.

Does anyone know what size bolt to use to do that? any info in this regard appreciated.

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Austin, TX
81 240d dd
89 560sel sold

What filter are you talking about exactly? I don't have a W123, mine is electronic, but as far as I know (and this is the case in my Toyota Pickup) the speedometer uses motor oilto lubricate the cable' if you plug it you will have a non-working speedometer...

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[/SIGPIC]~cirrusman

1983 Mercedes Benz 300SD - Wife calls him "Chitty Chitty Bang Bang"
[SIGPIC]




1983 Toyota Tercel (Tommy, The little Toyota that could)
1965 Ford F100 (Grandma Ford)
2005 Toyota Sienna (Elsa, Wife's ride)


Gone:
1988 Toyota Pickup
2004 Subaru Outback

1987 Cadillac Fleetwood Brougham
1986 Volvo 740 GL Station Wagon - Piece of junk.
1981 Volvo 242 DL 2 Door - Hated to see it go. R.I.P.
1987 Pontiac Fiero GT

The cable is not lubed by engine oil nor is the speedo. He's referring to the oil filter canister where the oil pressure line to the gauge runes from.

As for the bolt size I have no idea...

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2004 F150 4.6L -My Daily
2007 Volvo XC70 -Wife's Daily
1998 Ford F150 -Rear ended
1989 J-spec 420SEL -passed onto its new keeper
1982 BMW 733i -fixed and traded for the 420SEL
2003 Volvo V70 5 Speed -scrapped
1997 E290 Turbo Diesel Wagon -traded for above
1992 BMW 525i -traded in
1990 Silver 300TE -hated the M103
1985 Grey 380SE Diesel Conversion, 2.47 rear end, ABS -Sold, really should have kept this one
1979 Silver 300D "The Silver Slug" -Sold

Oh! I had no idea that on that model the oil pressure was given from oil coming directly from the cannister... my bad.

__________________
[/SIGPIC]~cirrusman

1983 Mercedes Benz 300SD - Wife calls him "Chitty Chitty Bang Bang"
[SIGPIC]




1983 Toyota Tercel (Tommy, The little Toyota that could)
1965 Ford F100 (Grandma Ford)
2005 Toyota Sienna (Elsa, Wife's ride)


Gone:
1988 Toyota Pickup
2004 Subaru Outback

1987 Cadillac Fleetwood Brougham
1986 Volvo 740 GL Station Wagon - Piece of junk.
1981 Volvo 242 DL 2 Door - Hated to see it go. R.I.P.
1987 Pontiac Fiero GT

The Oil Pressure Line at the Oil Filter does not seal on the threads of the Fitting. It seals on a cone shaped tip not unlike the Fuel Injection Hard Lines.

While it might be possible to use sealant on the Bolt Thread I would not bottom out the Bolt and tighten it really hard as it could ruin the seat for the Nromal Oil Pressure Line.

I don't know this for a fact but I found this in My Notes: Oil Pressure Gauge adapter fittingMplafleur in this post says the 300SDL has a 12mm by 1.5 twist on it

In any event once the Oil Pressure Line is out you can take it to the Hardwear Store and run a Nut over the threaded end to find out what size it is.

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84 300D, 82 Volvo 244Gl Diesel

The easiest way I believe is to get an electronic sender from an SD at the junk yard and use that as a plug. I'm almost positive they use the same sealing configuration.

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Current Stable

• 380SL (diesel)
• Corvette C5
• Manx
• Baja Bug
• F350 Powerstroke
• Auburn Boattail Speedster replica

Correct. The seal is with the crush washer against the face of the sender or bolt head.

I would use an electric sender. I actually converted my 2.2 diesel to electric oil pressure readings when I swapped it into my '93 chassis. Works great, and no leaky line to worry about.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

The Electric Sending Unit is a good idea. I have cut off the oil line from a junker at the Oil Filter housing, leaving a couple inches of plastic line, and heating it and mashing the melted soft ends together. I have done this mostly to keep the hole filled when I pressure wash a PNP engine. so should work for your temporary plug.

There is about 100lbs of oil pressure so keep that in mind.


Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

"I have 81 240d." The 240D is setup for a Mechanical Gauge. The Plate at the Bottom Rear of the Oil Filter is different from the one with the Electrical Sending Unit and the Oil Pressure line seals differently from the Electrical Sending Unit.

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84 300D, 82 Volvo 244Gl Diesel