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#140 is the check valve at the brake booster. Follow the big vacuum line coming out of it. You'll see the check valve in the line between it and the vacuum pump. There are a couple of pegs coming off it for your vacuum connections, they are exactly as marked in the drawing. Be VERY careful with the vacuum connections, the plastic is brittle and easily broken!
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Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)
Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)
Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]
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