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#1
04-22-2011, 12:54 PM
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W114 Oil Pan Replacement
The oil pan gasket is leaking on my 1973 280. The shop manual calls for removing the suspension crossmember in order to take off the pan.
Can it be done without removing it? 
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#2
04-22-2011, 07:55 PM
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The sump pan or the aluminum section?
The aluminum pan spans front to rear seals, while the sump pan is steel and is the lowermost part.
The aluminum pan doesn't have a gasket , just the front & rear seals. The sump pan can be removed without removal of front axle crossmember and it does have a fiber gasket.
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#3
04-23-2011, 12:13 AM
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If it's anything like the SL which shares the same sub frame. It's a once piece pan that runs across the length of the block. You will need to either lift the engine or drop the sub frame.
__________________
With best regards Al
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#4
04-23-2011, 12:57 AM
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There is only a single pan bolted into the block as far as I can see. It's front lip does appear to overlap the cross member. Sounds like engine moving up is the easiest option. I guess I need to lift from above as using a jack under the oil pan is a little counterproductive
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#5
04-23-2011, 01:00 AM
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You may be able to get away with supporting the engine with a hoist while the car is jacked up and then dropping the sub frame on one side.
__________________
With best regards Al
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#6
04-23-2011, 10:50 AM
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You should be able to get the oil pan off without removing the subframe--lifting the engine a bit will help. I believe I got at the "inaccessible" rear allen screws with a little 1/4" drive hex bit JB-welded to a flexible spring-steel cable like a motorcycle speedometer drive.
You might try driving the car up on ramps and then gently lift the oil pan slightly with a scissors jack as a trial run--that might even provide the clearance to nip up the screws and possibly solve the leakage problem--good luck Tim Kraakevik kraakevik@voyager.net Four M110's
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#7
04-23-2011, 04:24 PM
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Thanks Tim, following your advice I managed to lift up the engine a bit and re-snugged the bolts. We'll see if this takes care of it. The pan's bent. It looks like someone either tried to lift the car by the oil pan, or sat it down on a giant boulder. It might be bent out of shape and causing the leak.
If I have to replace it, now I know how to get to "those" bolts.
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#8
04-24-2011, 10:26 AM
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Glad to hear you were able to get at the screws--it may just do the trick.
Someone put a divot in the oil pan of my black 280C big enough to reduce the oil capacity to 5 1/2 quarts--fortunately there's plenty of capacity and clearance between the pan and the oil pump pickup--it doesn't leak at all--but the oil does get changed a little more frequently. Tim Kraakevik kraakevik@voyager.net Four M110's
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