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Old 11-23-2002, 03:39 PM
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Join Date: May 2002
Location: York Haven, PA
Posts: 65
Question Vacuum

If a man were to use a good vacuum gage on the pump, what reading should he get ??
About a year ago, I used my unit on both the VW and the Benz and was surprised that the VW pump(known to be good) was much more powerful.
I am the same man with the inoperative heat/AC system, the engine comp heat controller is, IMO, "toast" (cracked, corroded, and clogged). I do not have $700 for a new one. As I recall, a rebuild kit from the dealer is $225, but I have doubts as to the rebuildability.

Adrian , a 300D and two VW Diesel caddies

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Adrian
'80 Mercedes 300D ..sold..
two Diesel VW caddies, old ones ..sold..
'96 Saab 900S
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Old 11-24-2002, 12:27 AM
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Join Date: Jun 2000
Location: Cary, NC
Posts: 551
On my '84 300D, I get about 20-21 in. of vacuum at the double check valve coming off the pump, prior to entering the brake booster. This is the rated amount of vacuum for this year-model; yours is probably similar.
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1995 E300 Diesel (Die Blau Frau)
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Old 11-24-2002, 09:08 AM
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Join Date: May 2002
Location: York Haven, PA
Posts: 65
Thank you, Matt
I am becoming more convinced now that the check valves are leaking.

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Adrian
'80 Mercedes 300D ..sold..
two Diesel VW caddies, old ones ..sold..
'96 Saab 900S
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