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Daft W123 300D nut and bolts sizes
It is often said “they don't make 'em like they used to” - in the case of the W123 that's true. Working on these cars certainly gives me the feeling that I'm working on an old fashioned vehicle.
Take a look at this list of the daft sized nuts and bolts I've found on my 1981 300D – keep in mind that these are just standard hex head fasteners – I'm not talking about special tools... Here are the favourites Prop shaft 46mm and 41mm (Open end spanners) Flex disc bolts one side 17mm but the other 15mm??? (Why?) Fuel tank sender 46mm (You can just about get away with a spanner) Fuel tank drain / strainer 46mm (need a socket when tank is in situ unless you are lucky) Front crankshaft bolt OM616 / OM617 (27mm socket) Diesel injectors (Deep 27mm socket if you are lucky with the overflow pipes) Glow plugs – 20.8mm (this almost falls into the special tool category but seriously use a good quality adjustable spanner) Differential fill and drain plugs 14mm Allen key Pitman arm retaining nut 36mm Idler arm bolt and nut 24mm (Not really daft – but good to know) Oil cooler line union nuts 27mm Notable 12 points Big end nuts 14mm 12 point socket OM617 later type head bolts M12 12 point key Front shock absorber lower bolts 12mm 12 point socket Flywheel to crankshaft bolts 12mm 12 point socket My top 3 surprises:-
Having had to get all of this I can conclude not only is no such thing as a cheap Mercedes – there is also no such thing as a cheap tool kit to maintain your Mercedes!
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits! Last edited by Stretch; 03-17-2011 at 09:19 AM. Reason: Removing wierd addition... and corrected to 36mm |
#2
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I notice you do not mention any SAE threads... a MB AC system will have some of those... ( at least here in the US ) ...
The worst case I have seen was my 1957 XK140 Jaguar... it had Whitworth ( English ) thrown in randomly with the metric and US threads with no way to spot them.. working on an old car with rusted and stuck nuts and bolts anyway... and then having some weird ones included... a great way to round off heads and have to go to ' a bigger hammer' often.
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html |
#3
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huh
old Brit bikes like my BSA M20 used - BSWhit, BSFine, BSCy, BSPipe, and BAs threads, plus various 'bastard' left hand threads for odd bits like the petrol cap..... all on the same bike!
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cheers!! |
#4
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Since when are the glowplugs 20.8mm? I've always removed them with a 14mm and a 7mm.....
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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) |
#5
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Flex disc bolts one side 17mm but the other 15mm??? (Why?)
Not the first time I've seen a nut bigger than the head of the bolt on the other side. Glow plugs – 20.8mm (this almost falls into the special tool category but seriously use a good quality adjustable spanner) 20.8mm ~13/16 = spark plug wrench.
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CC: NSA All things are burning, know this and be released. 82 Benz 240 D, Kuan Yin 12 Ford Escape 4wd You're four times It's hard to more likely to concentrate on have an accident two things when you're on at the same time. a cell phone. www.kiva.org It's not like there's anything wrong with feeling good, is there? |
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Quote:
http://www.startekinfo.de/etools/content/tool.jsp?toolno=617%20589%2000%2003%2000
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits! |
#7
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So are old bikes more expensive to maintain than an old Mercedes?
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits! |
#8
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AC. AC? Never had it - never even owned a car with electric windows!
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits! |
#9
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yup, as noted, the old big glow plugs use 13/16" socket.
and the newer head bolts are not 12 point keys... they are xzn TRIPPLE square keys... NOT the same as torx or 12point standard!
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#10
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What kind of glow plugs do you have? The Bosch in my 83 is 12 mm
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85 300D turbo pristine w 157k when purchased 161K now 83 300 D turbo 297K runs great. SOLD! 83 240D 4 spd manual- parted out then junked |
#11
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Quote: "Fuel tank drain / strainer 46mm (need a socket when tank is in situ unless you are lucky)"
The barb fitting that screws into the strainer is 19 mm. If you're lucky a 19 mm open end will get the 46 mm strainer off and not the 19 mm barb.
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85 300D turbo pristine w 157k when purchased 161K now 83 300 D turbo 297K runs great. SOLD! 83 240D 4 spd manual- parted out then junked |
#12
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So you only have to own one 17 mm and one 15 mm, and with the savings you can go get some of the other sizes you need!
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95 E300D working out the kinks 77 300D, 227k, station car 83 300CD 370k, gone away 89 190E 2.6- 335k, no more 79 VW FI Bus- 145k miles, summer driver 59 VW Beetle ragtop- 175k miles 12 VW Jetta- 160k miles |
#13
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Quote:
I used to own a Honda...the thing I liked best about that car was every bolt head had the size socket it needed stamped on top. If it said "10", you reached for a 10mm wrench, and so on. |
#14
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Quote:
...now that's not to say that my W123 is a pain in the backside - I'm the pain in the backside this time: I just can't stop taking it to bits and putting it back together again.
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits! |
#15
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Good point - I should have tried that. However, when I did the job I was determined not to join the "how do you get diesel out of your clothes / hair / eyes?" club. I'm happy to report I was successful due to a nice little siphon pump and a Jerry can.
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits! |
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