My mechanic tells me the engine on a 1984 300D Turbo has to be removed in order to replace the rear main seal. Does anyone know if this is true??OM617 engine.


Thanks,
Harry

Yes it is true. the rear seal is a two piece rope seal, and no, it can not be rolled in or pushed around, there are some pins that keep it in place.

http://www.peachparts.com/shopforum/diesel-discussion/291156-rear-main-seal.html

http://www.peachparts.com/shopforum/diesel-discussion/298852-rear-crankshaft-rope-seal-replacement-without-removing-crank.html

http://www.peachparts.com/shopforum/diesel-discussion/300629-w123-rear-main-seal-how-much-%24.html

http://www.peachparts.com/shopforum/diesel-discussion/288644-fitting-rear-crankshaft-seal-om617.html

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

Pretty good job. How many miles are on the engine? Based on the mileage you may get into a position where "While I am in here I may as replace these worn parts too". It can get kinda costly. Not only has the engine got to come out the crankshaft has to be removed.

__________________
Jim

This would be the time to adapt that 4-spd to it!!! LOL

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1983 300D, the "Avocado"
1976 240D, 4-spd the "Pumpkin", SOLD to Pierre
1984 190D, 2.2L, 5-spd, my intro to MBZ diesels, crashed into in 2002

What exactly are the symptoms? It's easy to mistake a valve cover leak or an oil filter housing to block leak for a rear main leak on these engines.
If it is a rear main seal leak, you might be further ahead to consider it an added exotic feature--the continuous oil change option.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

ON most cars/trucks, in order to replace the rear engine seal, one must pull the engine, or drop the transmission. Then, the flywheel must be removed ( in most cases) for the rear seal to be R & R'd. In some MBZ cars, the motor and tranny come out together and taken apart from each other on a bench.

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1983 300D, the "Avocado"
1976 240D, 4-spd the "Pumpkin", SOLD to Pierre
1984 190D, 2.2L, 5-spd, my intro to MBZ diesels, crashed into in 2002

and bottom end (underneath) lube job.

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Jim