[MBZ] 300SDL vacuum information
Can anyone point me to a site with information about the 300SDL vacuum system? I'm not getting enough vacuum from the check valve tap on the brake booster line to operate the other vacuum accessories reliably. All the service manuals I've been able to locate for the car are JUNK. Are there supposed to be two ports on the vacuum pump, one for the booster and another for the other vacuum accessories? The vacuum diagram under the hood doesn't even show the brake booster line! Where am I supposed to get vacuum for the accessories? Thanks in advance! -brian
Re: [MBZ] 300SDL vacuum information
Tried to take a picture for you, but I can barely see it with the radiator hose in the way. Yes - there are two ports - one for the booster, the other for the accessories. Mine (300SDL) wouldn't hold vacuum, and took quite awhile to generate vacuum after starting in the AM. I thought it might be just the check valve on top, but I ended up having to replace the pump. Are there supposed to be two ports on the vacuum pump, one for the booster and another for the other vacuum accessories? The vacuum diagram under the hood doesn't even show the brake booster line! Where am I supposed to get vacuum for the accessories? Thanks in advance! -- OK Don, KD5NRO Norman, OK The Americans will always do the right thing... after they've exhausted all the alternatives. Sir Winston Churchill '90 300D, '87 300SDL, '81 240D, '78 450SLC, '97 Ply Grand Voyager
Re: [MBZ] 300SDL vacuum information
Brian Smyla wrote: Can anyone point me to a site with information about the 300SDL vacuum system? I'm not getting enough vacuum from the check valve tap on the brake booster line to operate the other vacuum accessories reliably. All the service manuals I've been able to locate for the car are JUNK. Are there supposed to be two ports on the vacuum pump, one for the booster and another for the other vacuum accessories? The vacuum diagram under the hood doesn't even show the brake booster line! Where am I supposed to get vacuum for the accessories? Thanks in advance! The engine vacuum diagram is on the CD (7.1-500) as is the information on testing the pump (43-0660). http://mb.braingears.com/ Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 182Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi, '84 190D 2.2 229Kmi (retired)
Re: [MBZ] 300SDL vacuum information
system? I'm not getting enough vacuum from the check valve tap on the brake booster line to operate the other vacuum accessories reliably. The only thing on the booster's tap is the brown line for the engine shutoff. Everything else comes off the secondary vacuum output line on the vacuum pump. (An inch or so to the passenger side from the big line.) Or so it is on ours. -- Jim
Re: [MBZ] 300SDL vacuum information
Unless the doors,trunk and gas door is the problem then that is a different system commencing from a pump found in the spare tire well. On 6/27/06, Jim Cathey [EMAIL PROTECTED] wrote: system? I'm not getting enough vacuum from the check valve tap on the brake booster line to operate the other vacuum accessories reliably. The only thing on the booster's tap is the brown line for the engine shutoff. Everything else comes off the secondary vacuum output line on the vacuum pump. (An inch or so to the passenger side from the big line.) Or so it is on ours. -- Jim ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- John Freer Palm Springs, CA 1992 500 SEL 143K Stardust 1985 380SL 143K Blue Belle 1996 Sidekick 57K Kermit 1992 500SL 108K unnamed
Re: [MBZ] 300SDL vacuum information
Well if you are not getting enough vacuum from the brake booster line your pump might not be putting out enough vacuum. First thing to do is to pull off an plug each seperate vacuum system to see if that is whats leaking. Such as the trans shifting part of it, then the climate control part. If you have not done so already, the accessory line that comes off the vacuum pump goes to a 3 way splitter. You need to replaced that with a 2 way splitter and unplug the lines that go over to the passenger side of the engine for the egr and air recirc stuff. Those things over there are probably leaking and could lower your vacuum level. Brian Smyla wrote: Can anyone point me to a site with information about the 300SDL vacuum system? I'm not getting enough vacuum from the check valve tap on the brake booster line to operate the other vacuum accessories reliably. All the service manuals I've been able to locate for the car are JUNK. Are there supposed to be two ports on the vacuum pump, one for the booster and another for the other vacuum accessories? The vacuum diagram under the hood doesn't even show the brake booster line! Where am I supposed to get vacuum for the accessories? Thanks in advance! -brian ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- Kaleb C. Striplin/Claremore, OK 91 300D 2.5 Turbo, 90 420SEL, 89 560SEL, 87 420SEL, 87 300SDL, 85 380SE, 85 300D, 84 190D 2.2, 83 300TD, 81 300TD, 81 240D, 76 240D, 76 300D, 74 240D, 73 280SEL 4.5, 72 250C, 69 250 http://www.striplin.net
Re: [MBZ] 300SDL vacuum information
Yea, when I got mine it would run everything all at once. Had low vacuum. I unhooked the lines to the passenger side as I said before and it helped. But replacing the pump is what was really needed as it was the old style pump. OK Don wrote: Tried to take a picture for you, but I can barely see it with the radiator hose in the way. Yes - there are two ports - one for the booster, the other for the accessories. Mine (300SDL) wouldn't hold vacuum, and took quite awhile to generate vacuum after starting in the AM. I thought it might be just the check valve on top, but I ended up having to replace the pump. Are there supposed to be two ports on the vacuum pump, one for the booster and another for the other vacuum accessories? The vacuum diagram under the hood doesn't even show the brake booster line! Where am I supposed to get vacuum for the accessories? Thanks in advance! -- Kaleb C. Striplin/Claremore, OK 91 300D 2.5 Turbo, 90 420SEL, 89 560SEL, 87 420SEL, 87 300SDL, 85 380SE, 85 300D, 84 190D 2.2, 83 300TD, 81 300TD, 81 240D, 76 240D, 76 300D, 74 240D, 73 280SEL 4.5, 72 250C, 69 250 http://www.striplin.net
