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  #16  
Old 10-30-2006, 03:38 PM
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Originally Posted by dmorrison View Post
However you will need the fly wheel stop to tighten the front crank main bolt to 320NM of torque. Tool # 601 589 00 33 00. The 617 allows you to place a large bolt or rod in the balancers way and tighten against that. I don't see that the 603 will allow it. Not completely sure about this though.
I wouldn't try this without the flywheel lock tool. Also you'll need to buy or borrow a torque wrench capable of reaching 320Nm... this is a LOT of torque, and not easy to apply with the car just lifted on a hydraulic jack. BT, DT.



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  #17  
Old 11-05-2006, 08:48 PM
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I have done this twice on a 601. Used an impact wrench with a 27 mm to take off the main bolt (and to put it back on). Then, you can take out some of the allen bolts so as to take off part of the front pulley. Finally, you can use a puller to remove it. It is not very hard. You do not need any special tools. The only problem is that on a 603 there may not be enough room for the impact wrench. on the 601 190's there is tons of room up front.

An impact wrench can tighten it enough without the locking tool. I did this in 1994 and then again in 2004. About 200kmi inbetween.
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  #18  
Old 11-05-2006, 09:12 PM
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Excellent! I plan within about 7-10 days, same time I reseal my IP
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  #19  
Old 01-25-2010, 01:03 AM
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it's been a while but

Hi, I am getting ready to pull that job, do I need any other parts other than the front crankshaft seal on a 603 engine?
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  #20  
Old 01-25-2010, 11:11 AM
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Originally Posted by eogutveren View Post
Hi, I am getting ready to pull that job, do I need any other parts other than the front crankshaft seal on a 603 engine?
Parts, no. Tools, yes. Buy an OE seal, current p/n is 023-997-84-47, current dealer MSRP is less than $12.

BTW - be VERY VERY careful when re-installing the hub on the crankshaft. The woodruff key likes to not slide into the hub, and it pushes back against the crankshaft, preventing the hub from seating properly. When you start to tighten the screw for the hub, just turn it 2-3 turns then remove, and inspect the keyway with a flashlight & mirror. If the key is not still clearly in place, remove the hub, re-seat the key, and try again. Repeat as necessary. Take careful note of how far the hub seats against the engine (note space between hub and timing cover / seal) BEFORE you remove it, make sure when it's re-installed that it's in the EXACT same position. If it's 1/8" or more too far out, the key is in the way. If you screw up and drop the key into the crankcase, you'll have to pull the side oil sump off to retreive it.


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  #21  
Old 01-25-2010, 02:18 PM
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Originally Posted by gsxr View Post
If you screw up and drop the key into the crankcase, you'll have to pull the side oil sump off to retreive it.
Unless you have a 3.5 with no side sump

Isn't there a 'repair size' seal? I recall a choice of part numbers.

Any thoughts on checking and possibly polishing the hub shaft?

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  #22  
Old 01-25-2010, 04:32 PM
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Originally Posted by sixto View Post
Unless you have a 3.5 with no side sump
Yes - good point. I think that only applies to the 3.5's though (and OM606).



Quote:
Originally Posted by sixto View Post
Isn't there a 'repair size' seal? I recall a choice of part numbers.
I believe there used to be, but MB did away with it. They revised that front crank seal a dozen times, and interestingly, some engines specify different seals within the same supercession. For example, engine 1 shows seal A replaced by B, which was replaced by C, D, E, and finally F. However engine 2 may show seal "D" as the final replacement, not E or F. Very weird. I've not ordered the different types to compare them though.



Quote:
Originally Posted by sixto View Post
Any thoughts on checking and possibly polishing the hub shaft?
If the hub is not badly scored, it appears to still seal ok when left alone, at least when using the new OE seal that I referenced earlier. I've done this on four different OM60x engines with no leaks thus far, without resurfacing the hub. On two of the four, I had the Woodruff key push out of place, causing a great increase in heart rate and blood pressure until it was safely retrieved. Now I'm paranoid about that darn key!



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