Oil Leak at Vacuum Pump '05 c230 coupe
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Joined: Aug 2007
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Oil Leak at Vacuum Pump '05 c230 coupe
'05 C230 Kompressor Sport Coupe
I have a significant leak from around vacuum pump for brake system attached at rear of engine to the camshaft. I have been told it is a common source for an oil leak. My question is: Is this simply due to a bad seal and pulling the existing pump and replacing the gasket and reinstalling same pump is likely to eliminate the leak, or is replacing the pump itself (along with a new gasket) recommended? Pump price is $180-200 vs. $3.00 gasket.
I have a significant leak from around vacuum pump for brake system attached at rear of engine to the camshaft. I have been told it is a common source for an oil leak. My question is: Is this simply due to a bad seal and pulling the existing pump and replacing the gasket and reinstalling same pump is likely to eliminate the leak, or is replacing the pump itself (along with a new gasket) recommended? Pump price is $180-200 vs. $3.00 gasket.
Member
Joined: Sep 2006
Posts: 187
Likes: 2
From: Austin,Texas
2005 C230SS
'05 C230 Kompressor Sport Coupe
I have a significant leak from around vacuum pump for brake system attached at rear of engine to the camshaft. I have been told it is a common source for an oil leak. My question is: Is this simply due to a bad seal and pulling the existing pump and replacing the gasket and reinstalling same pump is likely to eliminate the leak, or is replacing the pump itself (along with a new gasket) recommended? Pump price is $180-200 vs. $3.00 gasket.
I have a significant leak from around vacuum pump for brake system attached at rear of engine to the camshaft. I have been told it is a common source for an oil leak. My question is: Is this simply due to a bad seal and pulling the existing pump and replacing the gasket and reinstalling same pump is likely to eliminate the leak, or is replacing the pump itself (along with a new gasket) recommended? Pump price is $180-200 vs. $3.00 gasket.
Thread Starter
Junior Member
Joined: Aug 2007
Posts: 16
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Thanks for the quick and helpful replies! I do greatly appreciate it. LILBENZ: When you replaced yours, did you have a lot of oil that leaked all around the area. I certainly do...a bit of a mess to clean up. Also, was any explanation given as to why leak developed? Seems weird that old gasket looked normal. I guess we just hope the replacements don't fail too!
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Joined: Apr 2009
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From: long beach, ms
05 c230k s, 06 gmc sierra
i had the same problem. but not as bad, i caught it when it started. mine was leaking onthe pump itself, and not the gasket that goes into the head. the pump itself, has a lid has bout 5 screws holding it. with a gasket inbetween the pump and the lid itself. i tryed to oreder the oring seal for the pump at mb dealership. but they say there was no part # for it. but they gave me two other gasket which goes into the head. a metal gasket, and a small oring gasket. i had to use a oil filter gasket from a canister type filter which is working fine for me.
you should clean around the pump area and see if it leaks from the head (where the pump goes into the head to camshaft) or the pump itself. i would change the two gasket (metal,and small oring) if you plan to take the pump off yourself.
i cant see how that pump would go bad. its just the gasket or oring seals.
you should clean around the pump area and see if it leaks from the head (where the pump goes into the head to camshaft) or the pump itself. i would change the two gasket (metal,and small oring) if you plan to take the pump off yourself.
i cant see how that pump would go bad. its just the gasket or oring seals.
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Thread Starter
Junior Member
Joined: Aug 2007
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i had the same problem. but not as bad, i caught it when it started. mine was leaking onthe pump itself, and not the gasket that goes into the head. the pump itself, has a lid has bout 5 screws holding it. with a gasket inbetween the pump and the lid itself. i tryed to oreder the oring seal for the pump at mb dealership. but they say there was no part # for it. but they gave me two other gasket which goes into the head. a metal gasket, and a small oring gasket. i had to use a oil filter gasket from a canister type filter which is working fine for me.
you should clean around the pump area and see if it leaks from the head (where the pump goes into the head to camshaft) or the pump itself. i would change the two gasket (metal,and small oring) if you plan to take the pump off yourself.
i cant see how that pump would go bad. its just the gasket or oring seals.
you should clean around the pump area and see if it leaks from the head (where the pump goes into the head to camshaft) or the pump itself. i would change the two gasket (metal,and small oring) if you plan to take the pump off yourself.
i cant see how that pump would go bad. its just the gasket or oring seals.
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Junior Member
Joined: Apr 2009
Posts: 24
Likes: 0
From: long beach, ms
05 c230k s, 06 gmc sierra
here is the part # for the metal gasket, and the small oring. and as for the pump gasket seal i used a oil filter seal from a 08 kia sorento (only used the seal that came with the filter)
gasket, part# 271 - 238 - 01 - 80 . price 12.75
seal ring, part# 668 - 997 - 01 - 45 . price 2.70
https://mbworld.org/forums/c-class-w...ar-engine.html
gasket, part# 271 - 238 - 01 - 80 . price 12.75
seal ring, part# 668 - 997 - 01 - 45 . price 2.70
https://mbworld.org/forums/c-class-w...ar-engine.html
Thread Starter
Junior Member
Joined: Aug 2007
Posts: 16
Likes: 0
here is the part # for the metal gasket, and the small oring. and as for the pump gasket seal i used a oil filter seal from a 08 kia sorento (only used the seal that came with the filter)
gasket, part# 271 - 238 - 01 - 80 . price 12.75
seal ring, part# 668 - 997 - 01 - 45 . price 2.70
https://mbworld.org/forums/c-class-w...ar-engine.html
gasket, part# 271 - 238 - 01 - 80 . price 12.75
seal ring, part# 668 - 997 - 01 - 45 . price 2.70
https://mbworld.org/forums/c-class-w...ar-engine.html
Member
Joined: Sep 2006
Posts: 187
Likes: 2
From: Austin,Texas
2005 C230SS
Thanks for the quick and helpful replies! I do greatly appreciate it. LILBENZ: When you replaced yours, did you have a lot of oil that leaked all around the area. I certainly do...a bit of a mess to clean up. Also, was any explanation given as to why leak developed? Seems weird that old gasket looked normal. I guess we just hope the replacements don't fail too!
Member
Joined: Sep 2006
Posts: 187
Likes: 2
From: Austin,Texas
2005 C230SS
Junior Member
Joined: May 2012
Posts: 17
Likes: 0
From: Riverside Ca
c230 Kompressor
I replaced both the O rings. The one going into the head and the large one on the pump itself using the O ring from a large canister type oil filter I found at Autozone. It was not a perfect fit and had to be stretched a bit. For good measure I used a very light coat of RTV as not to get any into the pump when it got compressed by the lid and 5 screws. That did the trick. Use a 8mm box wrench to remove the pump from the head as the socket and wrachet setup does not work due to the tight clearance. Be very carefull not to over tighten and strip the torx bolts.
