I would like to adjust the valves in my 240D. I've been told you need special wrenches to do this. Assuming these wrenches are of a standard size, can they be made?

Just curious. I would rather go this route than buying a set of special wrenches from Mercedes for a small fortune.

I appreciate the response. Thanks!

USE THE SEARCH FUCTION. IT HELPS TO NOT HAVE THE SAME QUESTIONS POSTED OVER AND OVER AGAIN.

I used "valve adjustment wrenches 617" in the search function and had 12 threads come up. It really is a great tool!

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Doug

1987 300TD x 3
2005 E320CDI

Thanks!

BUT THERE IS NO NEED TO SHOUT!!

Some members have been able to grind down a set of wrenches to make them thinner instead of buying a special set.

I bought the special set because they are also bent to make them easier to use.

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Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

$65(?) Hazet wrenches designed for the job are the way to go. **************.com makes their own for about $20 less but they kinda suck on account of having fat ends where they grab the adjust nuts. Also Hazets include a 3rd wrench for immobilizing the valve spring cap.

Give the guy a break! I don't see "BOARD MODERATOR" next to your signature
Have you "SEARCHED" EACH time before YOU ask a question? I know that I have not!

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My Truck.. 2007 DODGE, 5.9 Cummins, 6spd stick, 4X4. My car..1977 240D, OTHER WHEELS...1955 VW Oval window bug, European Delivery (Holland) with a 1700cc, 2 barrel, Porsche drum brakes. 1939 WILLYS Pick-up. 1967 Triumph 200cc Tiger Cub. 1976 Honda 550F 4cyl Motor Cycle.

I have been able to use standard open end wrenches to adjust both 240 and 300 engines. It is difficult to work around the metal injector lines, but it can be done or you can remove them. The lower nut seems to be a bit bigger than 14 mm so I had to grind "open" a 14 mm wrench to get it to fit, but never had any problem which thickness of the wrench.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

Nor do I see a high number of posts...

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1989 300E 144K

I prefer the bent ones, easier to operate with.

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

Thanks again. You guys are great.

Sorry for asking a question that was covered many times before. The diagrams in some of the previous posts on this topic are very helpful.

One more question. Can I assume that the position of the valves in a 4 cyl. 240D is the same as the 5 cyl., except the 4cyl. is missing the last cylinder, (next to the oil filter)? So looking at the valves front to back, it would be:

Exhaust
Intake
Intake
Exhaust
Exhaust
Intake
Intake
Exhaust

Thanks!

You can glance down at the manifolds to sort out what valves are which. And i think you'll be darned glad to not have the 5th cylinder jammed up against the firewall.

I guess for those of us that search every time, it gets a little old when the searches turn up 20 worthless posts because people aren't searching and just ask a question that has already been well documented.

Sorry if I came on too strong - just making it really easy to read with large red letters.

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Doug

1987 300TD x 3
2005 E320CDI

I was under the impression that our search function was a one word only search engine. As in your search would give all posts with valve, or adjustment, or wrenches, or 617.
On some other forums, you can add some kind of "+" in front of word, with a space, and "+" in front of another word, and it would give posts with BOTH words, not just either/or.

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

Go to your local parts house and buy a pair of 14mm open end wrenches for about $2.50 each. Clamp each one in your vice, heat with an oxy torch and bend an appropriate step (45 deg. one direction and 45 deg back the other way) in each.

Removing the injector lines make the job infinately easier.

I purchased my 1981 240D at the end of April.

This past Saturday, I did my first valve adj (81 240D) with a set of those special wrenches.

first small problem came to removing the valve cover. Not had, but if you leave some of the linkage to IP on, then you can not completly move the valve cover out of the way. At least I had this problem.

second, thanks to reading other posts, I could turn the engine, using the power steering pully. my belt must be a little loose, since on the compression cycle, the belt slipped.

third, never adjusted a overhead cam before, and had all sorts of problems adjusting the valve using two of those special wrenches. Ended up using the special wrenches to 'break' the nuts, and then my fingers to adjust to the correct gap. Then used a normal 14mm open end wrench, to tighten up the bottom nut, while holding the upper nut in my fingers. Just before my fingers could no longer keep the adjusting nut from turning, I then used the two special wrenches. Went a lot faster for me.

out of the 8 valves, I think 3 or 4 needed no sort of adjustments. of the remaining 3 were so tight, I could not get the gage between the valve and whatever. made me wonder why half the valves were so far out of spec.

engine sounds a lot better.