So I start to get confused when looking at the diagram because everything is plumbed differently that in people's photos. Specifically, snookwhaler's photo shows things way different than the diagram. For instance, the lines that come from the tops of 81 and 84 respectively should in the diagram go to different nipples of the check valve (140). On snookwhaler's photo it show both of those lines going to the same nipple of the check valve. Does anyone understand why this would be?

David

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1985 300D. 179,000 miles.