Author Topic: What parts do I need to buy to replace the front crank shaft seal 230sl  (Read 1875 times)

County Guy

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Hi.  I want to replace the front crank shaft seal on my 230sl but I'm confused about what I need.  I have two numbers from Mercedes.

a 'collar spacer' : 108-031-02-51
a 'crank seal'  :  008-997-05-47

Are these parts correct?  Do I need any others?

Thanks for any help you can give.

Benz Dr.

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Probably correct numbers but I don't have my parts book in front of me. Look at your crank gear and if worn you might want to replace that too since everything is already off. That may require a bit more disassembly though. ;)
1966 230SL 5 speed, LSD, header pipes, 300SE distributor, ported, polished and balanced, AKA  ''The Red Rocket ''
Dan Caron's SL Barn

1970  3.5 Coupe
1961  190SL
1985   300CD  Turbo Coupe
1981  300SD
2013  GMC  Sierra
1965  230SL
1967 250SL
1970 280SL
1988 560SEC

vintagecoupe

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Hi,
you might also want to check and replace the two dowel pins, that hold the counterweight in place at the front end of the crankshaft.
They cost very little and if you sit there on a sunday afternoon, ready for reassembly without them....

Andreas
'65 250SE W111 coupe
'68 280SL W113

wwheeler

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Pins aren't a bad idea. Mine were buggered up a bit from a previous PO when I went to put it back together. Even with brand new pins, I had to LIGHTLY file (with the emphasis on lightly) the pins to get the counterweight on with a snug fit. Mostly on the ends for a very slight starting taper. It took many trial fits before it was right. I just didn't want to smash it on like it was done before.

Most importantly, and has been said before, the counterweight only goes on one way. But it is so close it is easy to do it wrong. Be sure to index before you take it off. You will sleep better at night.
Wallace
Texas
'68 280SE W111 coupe
'60 220SE W128 coupe
'70 Plymouth Roadrunner 440+6

Naj ✝︎

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Hi,

#58 Pin               N000007 008244
#108 Seal Ring  008 997 0447
#200 Seal Ring  001 997 1241

naj
68 280SL

Vander

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Were you able to find the crank spacer? I am having trouble locating one.
1969 280SL

Tom in seattle

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I had trouble with the dowel pins also, I recommend replacing them.
Tom Averill
1967 250 SL Auto Euro Spec

MikeSimon

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Stupid question:

Can you replace the front seal without taking the crank out, i.e.: with engine still installed in car?
1970/71 280SL Automatic
Sandy Beige
Parchment Leather
Power Steering
Automatic
Hardtop
Heated Tinted Rear Window
German specs
3rd owner

Vander

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Yes, you can do it with the engine in the car. Remove hood, radiator, and front engine components.
1969 280SL

ja17

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Not sure what books you have but (Early BBB 03-12/1,12/2 also Late BBB 03-2/1).  Info and part numbers.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback