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#1
11-28-2008, 07:12 PM
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M104 Piston Replacement
I have a 95 C280 with a hole in #6 piston. Has anyone tried to replace a piston with the engine in the car? I'm cusrious to know if you can pull the oil pan with the engine in the car.
Thanks in advance, -Jim
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97' SL600 Sport Pano - Silver 90' 300e 2.6 - Silver Donated to a family member 95' C280 - Artic White 88' 924s - Guards Red Sold 98' Durango SLT - Silver 93' 740i Tripple Black Sold 95' 900s Conv - Red 96' XJ6 - Black - For Sale 95' 325i Convertible - Montreal Blue My Project Car 
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#2
11-28-2008, 09:54 PM
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It will be faster to remove the engine to do the job..
The oil pan must be removed Cylinder head must be removed There is no way to remove a piston in the car without the oil pan and head removed... As the piston cannot be removed at the bottom unless the crankshaft is removed...One would not want to try that in the car to remove the crankshaft would be a PITA to try and remove in the car Trans removed..front cover..chain tensioner and cam gears..
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MBENZNL.com
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#3
11-28-2008, 10:46 PM
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Pull the motor. If it's worth keeping tear it down totally and rebuild while apart.
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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]
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#4
11-29-2008, 11:11 AM
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Quote:
Again thanks for the reply any info I can gather is helpful. -Jim
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97' SL600 Sport Pano - Silver 90' 300e 2.6 - Silver Donated to a family member 95' C280 - Artic White 88' 924s - Guards Red Sold 98' Durango SLT - Silver 93' 740i Tripple Black Sold 95' 900s Conv - Red 96' XJ6 - Black - For Sale 95' 325i Convertible - Montreal Blue My Project Car
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#5
11-29-2008, 03:10 PM
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From what I can tell just by reading the shop manual, it is theoretically possible. They have you remove the engine and the oil pump (which means you have removed the oil pan and windage tray), and then push the piston out the top.
Removing the oil pan, pump and tray is possible with the engine in the car, but it looks like a pita.
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Prost! 
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#6
11-30-2008, 02:16 AM
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It is technically possible. It would not be worth the time though. I might consider this on a lift but not on the garage floor. I would still probably remove the engine. Getting the pan out requires unbolting the oil pump with the pan just down a little. It is horrible.
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#7
11-30-2008, 04:26 PM
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Thanks for the replys, I forgot about navigating around the oil pickup.
-Jim
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97' SL600 Sport Pano - Silver 90' 300e 2.6 - Silver Donated to a family member 95' C280 - Artic White 88' 924s - Guards Red Sold 98' Durango SLT - Silver 93' 740i Tripple Black Sold 95' 900s Conv - Red 96' XJ6 - Black - For Sale 95' 325i Convertible - Montreal Blue My Project Car
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#8
12-01-2008, 04:13 PM
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It is possible, but WHY?
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08 W251 R350 97 W210 E320 91 W124 300E 86 W126 560SEL 85 W126 380SE Silver 85 W126 380SE Cranberry 79 W123 250 78 W123 280E 75 W114 280
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