I used this .pdf to successfully reassemble my 722.4 valve body. It pertains to the 722.3 as well. Good luck.

http://www.mercedes-club-bg.com/Mercedes%20Benz%20Help%20PDF/Merecedes-Benz-Manuals/Automat-722-6/Mercedes%20722.3%20722.4%20eng.pdf

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Joe

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1980 300SD - 495k miles - 'The Ambassador'
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Former Family Members
95 C280
73 280SEL
90 300D
87 300SDL (X2)
86 560SEL
84 300D
80 300SD