You are correct. The nearest thing you need to special tools are a 27 mm deep socket (I got mine from Sears) and a torque wrench.

Some might say you need a flare wrench for the steel line nuts, but the nuts can be removed quite successfully with a straight open end wrench.

Not much more complicated than changing spark plugs.

Good luck.

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Ted
1979 240D
160,000 miles