I have a 85 300D with about 450,000-500,000 km on it. I've been reading through a lot of posts with the vacuum pumps and I was just wondering if I should do a full overhaul even tho it's not required?

Do you high mileage W123 owners replace the vacuum pump as a precaution? I don't want mine to go kaboom one day and mess up my chain etc. What's your replacement recommendation if your timing chain has minimal play?

__________________
1976 Mercedes 240D (Sold)
1985 Mercedes 300D Turbo Diesel: 500,000KM
1986 Mercedes 300E (Sold)
1988 Mercedes 300E (Sold)
2002 Mercedes C240 (Sold)
2008 Mercedes C350 4matic

A great site for purchasing industrial rubber products!

Industrial Rubber