Author Topic: Oil Filter Seized  (Read 3253 times)

Markbhai

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Oil Filter Seized
« on: July 27, 2017, 16:21:26 »
Hi All.

I am looking to change the oil filter on my 66 230SL but I cannot loosen the nut at the bottom of the filter housing, I don't want to present it with unreasonable force, but it just will not budge.

Can anyone offer some advice to a frustrated owner?

I have now removed the filter housing from the engine to gain full access but to no avail.

Thanks

Mark.

Markbhai

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Re: Oil Filter Seized
« Reply #1 on: July 27, 2017, 16:35:32 »
Well... I managed to free the bolt and remove it, but the bell housing is stuck to the top now...does this unscrew?

Thanks

Mark

mBdrvr

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Re: Oil Filter Seized
« Reply #2 on: July 27, 2017, 16:44:11 »
I has a rubber gasket that fits in a groove in the container. It crushes onto the fitting when you tighten it. If the long bolt is out , couple of taps with a rubber mallet should loosen it.

Paul
Paul Greenblatt
'70 280 SL
'66 250 SE Cabrio
'60 190 SL

Markbhai

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Re: Oil Filter Seized
« Reply #3 on: July 27, 2017, 18:14:41 »
Thanks Paul.

That seems to have done it.  It seems that the unit is miising a rubber sealing ring and I think it might have been this which caused the top and bottom to be clamped together...off for new parts now.

Mark.

kampala

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Re: Oil Filter Seized
« Reply #4 on: July 27, 2017, 20:41:21 »
Mark

The rubber seal sometimes hides in the slot in the canister.  You will read that some have missed that it was buried and added a new seal only to crack the canister.  Use a pick and make sure you have removed it.  I would guess it would have leaked crazy if seal was missing.

250sl - later - manual
280sl - 1971 - Auto - LSD

waltklatt

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Re: Oil Filter Seized
« Reply #5 on: July 27, 2017, 21:07:49 »
Possibly try some heat from a torch to melt the rubber seal and allow the two pieces to separate.
The previous person who was there tightened it too much, possibly with a pneumatic tool.

Walter

Jack Jones

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Re: Oil Filter Seized
« Reply #6 on: July 28, 2017, 00:12:19 »
Be careful using a torch on aluminum (aluminium for our UK friends  ;)) parts. A little too much heat and you will be looking for replacement aluminum parts.

Jack
Jack Jones                                                                                                   
1970 280SL 4 Speed
1984 280SL 5 Speed

ja17

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Re: Oil Filter Seized
« Reply #7 on: July 28, 2017, 04:33:38 »
I think he is referring to the critical inner housing seal which is missing. It must be in place or the oil will not be filtered.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback