BestBalbes

I have to change crankshaft bearings on 2010 S550, engine 273.
The engine has 24k miles and I'm planning to use the same bearing color codes as marked on crankshaft.
The problem is: I don't know how to read codes on crankshaft.

If somebody knows, could you, please, explain how to read - where on crankshaft each bearing number is coded?

Is it coded as:
1 3 5
2 4
or
1 2 3
4 5
?

My crankshaft codes:

BestBalbes

Update:
____________________________________

Hooray-hooray!!! I've got sizes!!! Tomorrow I'm going to order bearings!

The help was provided by Metric Motors, Inc.
They repair MB engines and were very nice to provide a detailed explanation.
I updated the image with crankshaft codes reading.
For info: I asked the same quesiton in 3 forums, visited dealership MB of Pompano, visited 2 local MB shops. Besides Mike fm Metric Motors nobody could answer the question.
Their complete answer is below:
____________________________________

Vasiliy,

The crankshaft bearing size codes are as follows.
Printed on the snout of the crank are the CAP bearing sizes.
#1 R-R-G-R-R #5 Special wider bearing
ORDER BEARING CODE SIZE
R = RED = CODE 56
G = YELLOW = CODE 54
B = BLUE = CODE 52
W = CODE 57
_ _ _ _ _ _ _

For the bearings that go on the block – there is a number stamped on the block next to each bearing cap.
1 =BLUE = CODE 52
2 = YELLOW = CODE 54
3 = RED = CODE 56

Hope that helps.

Regards,
Mike
MERCEDES-BENZ ENGINES
metricmotors@earthlink.net
Metric Motors, Inc.
www.mercedesengines.net
7630 Alabama Ave.
Canoga Park, CA 91304
tel: 818-712-9881 // 800-622-6867
fax: 818-712-9932
::::
As specialists in Mercedes-Benz engines and engine parts for over 32 years, we have supplied Mercedes-Benz dealerships and restoration facilities worldwide with parts and services of the highest quality available. We understand that there are no shortcuts to achieving excellence in the remanufacturing of an engine built to the standards of Mercedes-Benz. From classic applications such as 190SL thru newer generation E350 we combine OEM parts with our stringent factory specifications to satisfy the expectations of the Mercedes-Benz enthusiast.
:::::

Mr Lott

do anyone know where the crankshaft sensor is located on a 2007 Mercedes S 550

konigstiger

Driver side rear #70 in diagram – part # 6429050000.

s5benzo

Best why are you changing the bearings ? What happened ? Seems kind of bizarre at 24k miles for a 2010.

Diesel Benz

He already answered that question:
http://www.benzworld.org/forums/6576161-post3.html

Mr Lott

My car won't start. I Just started having this problem about 2 weeks ago. It will turn, but won't catch or start then stop immediately. . Finally I was stranded at home so with a little bit of advice I change the crankshaft sensor and the vehicle still did not start so I was wondering if anybody had any ideas it is a 2007 Mercedes Benz S550. Please any help would be great im trying not to have it towed to the dealer because I don't have the money to spend at this time. You can respond here or email me directly at familyaffairbarbershop@gmail.com thanks!

Diesel Benz

Sorry but I don't think it needs new crankshaft bearings, which is the topic of this thread. You would get better help on a separate thread or one that talks about your problem.

Elvis Emmanuel

Check the starting sensor at the back of your engine right beside the temperature sensor