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Old 08-08-2006, 04:19 AM
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need vacuum diagram for '87 300D. Please help

hello, I am Harris, new to this forum. My 300D has been having vacuum problem turning off the engine. Does anyone outhtere have a vaccum diagram for a 124 or a 1987 Merceds 300D. Any helps are greatly appreciated. Harry
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Old 08-08-2006, 05:26 PM
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smoke gets in your eyes
 
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You don't need a vacuum diagram yet. With engine running, apply vacuum to the shut-off actuator on top of the injection pump (vacuum diagram will not help you find this device). If the engine does not stop, you need a new shut-off actuator. If the engine stops, put a vacuum gauge on the loose hose and turn the key to off. Measure vacuum and report back.

Sixto
... stay tuned
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Old 08-08-2006, 05:48 PM
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need vacuum diagram for '87 300D. Please help

hello, I am Harris, new to this forum. My 300D has been having vacuum problem turning off the engine. Does anyone outhtere have a vaccum diagram for a 124 or a 1987 Merceds 300D. Any helps are greatly appreciated. Harry Sixto, Thanks for quick reply. My problem is a little more complicated. My vaccum lines to the iginition tumbler have been sucking air for the last 6 months. I replaced the iginition switch, and now my vaccum line to the igintion no longer has any vaccum. I suspect it either clogs with debris or a leaks somewhere. (I lost vaccum to the door system a long time ago!) Problem 2: I removed and checked the vaccum diagphram( to actuate the lever on top of injection pump). It seemed to hold vaccum and the seal is still good. When I put it back and connect vaccum directly from intake manifold to this diaghram, it did not actuate the diaghram. The position of the lever is now in a different position from that before I removed the part. I believe it has to be installed back in a certain way, and not just between the tongues of the other end of the lever. Problem 3: while hte tumber was out for 6 months, an electrical connector on the neck of hte tumbler was broken off. I believe it actuates the solenoid to allow the vaccum to certain place which I do not know. Obviously I need to buy another connector, but for the time being, a vaccum diaghram and detail on how to reinstall the diagraphm back on the injection pump would be greatly appreciated. Any helps are greatly appreciated. Harry

Last edited by slshowcase; 08-08-2006 at 06:00 PM.
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