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#1
11-15-2006, 12:17 AM
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Broke two plastic prongs on oil filter return flow valve. Ideas?
When removing the oil filter housing of my 1982 300sd, it looks like I broke
 two of the prongs off of the plastic part of the oil flow return valve. I did not notice it right away, but fortunately it caught my eye tonight as I was getting prppared to put things back together. Has anyone else done this? What sort of tool do I use (short of buying a special tool) to remove the return flow valve, and does anyone have any ideas for replacing this plastic part? I have searched all over about this valve on the internet and have found nothing. It seems like this would have happened to others. All I need is the plastic part ideally. I do not need the whole valve assembly. I will try to inquire at the dealership tomorrow. Something tells me that getting this little part isn't going to be easy. I was hoping to take the car on a trip next week.
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#2
11-17-2006, 02:23 AM
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As I thought, this part is not easily available. It has to be ordered from Germany. Fortunately, I was able to obtain an oil filter housing from a car similar to mine at a local junk yard. I noticed on this housing that the valve is recessed into the housing. This way, the fragile plastic prongs are protected.
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#3
11-17-2006, 10:52 AM
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hey, post a picture for us newbies that have no idea what you are talking about. what care must be taken to avoid your predicament? I hear it is a real pain to change the housing, get it CLEAN take pics.
John
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#4
12-05-2006, 01:36 AM
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Okay. Here is a picture of the part of the oil filter housing that mates to the block. Notice how the three prongs of the valve protrude on this version of the housing. If one is not careful to lift the housing away from the block before moving it up or down, there is a good chance these prongs will snap off.
I have also attached a picture of a homemade special tool to remove the threaded part that holds the valve in place. I purchased a plastic valve handle, and drilled two holes to allow the rods (I grounded them off with a dremel tool) from the master link of the timing chain to fit in. I could have grounded down a socket or piece of pipe, but this seemed easier, less messy, and quite forgiving. The nice thing about the plastic handle is that it is durable enough to remove the threaded seal, but flexible enough to allow small adjustments to be made by squeezing the rods with pliers in case the holes weren't drilled exactly to match the holes on the threaded seal.
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#5
12-05-2006, 06:49 AM
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OK, I guess my question is " Why were you removing the oil filter housing"?
Were you doing an engine rebuild, or repairing a leak? You might give newbies the idea that removal of that housing is regular maintenance. I have yet to remove the oil filter housing from either of my diesels.
__________________
1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags 
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#6
12-05-2006, 11:34 PM
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I did not have to do a full rebuild, but did have to pull the engine, and you are right - I never should have had to do this if the car had been taken care of properly by the previous owner. See
Replacing piston rings on 82 300sd - need advice for details.
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