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Originally Posted by psfred
That plastic disk is the main oil filter, without it in there you have NO filtration at all as the oil that is supposed to go through the bypass is instead simply going straight back to the pan!
It's a tight fit, reguardless. My brother's 300D is a huge pain, with a Wix filter or with a Hengst. You must fit the housing up onto the holder and then screw the bolt up (or you will bend the canister, we had to get a new one for my brother's, it was bent).
There is some art to this -- I can get it on, my brother (who is much stronger) cannot. As I said, you must fit the canister up and THEN start the bolt, else it goes sideways. The spring is quite strong, as it acts, I believe, as a pressure relief for the bypass filter. There is NO room under there, either!
Peter
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Well, I don't feel as inadequate then, not being able to get this thing to bolt up whilst laying on my back with only inches to spare! I'll be glad to get this finally put right so I can drive my baby again. One of my original questions was- do I need to get car towed to a place with a hoist or can I drive a short distance? I've concluded I certainly need a hoist and a good mechanic to make sure the filter assembly goes in right, but as for whether I can drive the car there- I did a little experiment today.
You say that the oil goes right back to the pan- that would imply none is getting to the engine. I took a chance and started it up and removed the oil fill cap from the cam cover- plenty of oil spraying out of there at idle, so I concluded there is plenty getting to the engine, therefore there should be no problem driving a couple of miles to get to a garage.
Made me think about what this "bypass" must be all about, as I'd never thought about it before. It would seem that when the disposable filter gets plugged, the oil pressure must force everything downward against the spring at the bottom, which would uncover an opening to the bypass tube. With my main plastic disk filter missing, it would mean the filter is in a permanent bypass state, but as my experiment proved, not all the oil gets bypassed- there must be some getting up to the engine, some going through the disposable cartridge, because it's new and not blocked, and some going through the bypass back to the pan. The fact that my guage was showing full pressure must prove this out too- if it were all bypassed, I wouldn't think it would show any pressure, right?
So, I conclude there will be no risk in driving the car a short distance to get the filters installed correctly- hopefully the mechanic I have in mind has enough "art" and strength to get it right!
Cheers,
Dave