HELP!!! I lost my service manual and I need a diagram so I can finish my oil change!! - Benzworld.org

Geeky1 · 03-28-2004, 01:13 PM

I lost the service manual CD for my 560SEL (it's somewhere in my room, but that's as good as lost, with the state my room is in), and I'm doing an oil change on the car. The oil filter has like 3 or 4 copper washers, and I have no idea where the hell they go. I need the diagram in the service manual telling me where they go...

Can someone please e-mail it to me or post it or something?

cdeeznuts · 03-28-2004, 02:20 PM

small copper is for the drain plug. small zinc one is for the top of the oil filter container. larger copper o-ring - not sure. but didn't use it and didnt seem to matter. large rubber o-ring for the inside of the oil filter cannister top. r&r.

Geeky1 · 03-28-2004, 02:23 PM

hmm. So the drain plug washer comes with the oil filter? Makes sense, now that I think about it... Which means that I now have to crawl back under the car and replace the stupid thing. Thanks.

jdc1244 · 03-28-2004, 06:01 PM

The copper and zinc washers are to protect the aluminum engines, so theyâ€™re important. The large copper washer is not used in the m117.xxx engines. [:)]

Geeky1 · 03-28-2004, 06:50 PM

Protect them from what? Galvanic corrosion? By the way, I put it together as per cdeez's instructions and it apparently worked, since I took it out and drove it around for about an hour after that and nothing broke... [:D]

jdc1244 · 03-28-2004, 08:20 PM

Quote:

Geeky1 - 3/28/2004 8:50 PM

Protect them from what? Galvanic corrosion? By the way, I put it together as per cdeez's instructions and it apparently worked, since I took it out and drove it around for about an hour after that and nothing broke... [:D]

No â€“ the aluminum alloy used to make the engine is relatively â€œsoftâ€? compared to iron, for example. The washers provide a flat surface to evenly distribute the torque load when the plug and filter bolt are tightened. Alloy on alloy contact can cause over time warping or distortions of the metal, which may lead to leaks or otherwise damage the contact area.

Does that mean your engine will get damaged if you donâ€™t use the washers? Of course notâ€¦

â€¦but one must remember who designed and built the engines â€“ have you ever known a German to throw caution to the wind and not play it safe? (rhetorical question.)[;)]

In any event Iâ€™m glad youâ€™ve got the crisis dealt with and new oil in the engine.[:)]