[MBZ] neutral safety switch location
While changing oil in my '84 300D, I took a quick look under the car but didn't see where the neutral safety switch is located . . . it certainly isn't obvious. Anybody know? TIA. G. M. Brown Brevard, NC ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] neutral safety switch location
Drivers side of the transmission Sent from my BlackBerry® wireless handheld -Original Message- From: glenn brown g_010...@hotmail.com Sender: mercedes-boun...@okiebenz.com Date: Tue, 29 Mar 2011 17:42:49 To: mercedes@okiebenz.com Reply-To: Mercedes Discussion List mercedes@okiebenz.com Subject: [MBZ] neutral safety switch location While changing oil in my '84 300D, I took a quick look under the car but didn't see where the neutral safety switch is located . . . it certainly isn't obvious. Anybody know? TIA. G. M. Brown Brevard, NC ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] neutral safety switch location
Where the linkage connects to the operating lever, specifically. Peter ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] Neutral Safety Switch - Final Report
Symptoms: Initially, 82 300SD would not crank in park on very cold days. Eventually would not crank at all in park unless engine thoroughly warmed up but always cranked in neutral. Cause: Replaced neutral safety switch with new from Rusty and did teardown on old switch. Switch has two sets of contacts (crank and backup lights) much like a relay except the moving contact is pushed by a cam and these cams are swept by a lever (slaved to lever on outside of case). The contacts were fine but apparently the park part of the cam was worn to the point that it did not move the contact sufficiently. The switch is basically not repairable as it is riveted together. Other comments: After disconnecting the shift linkage, it always got in the way so I (eventually) used a string (run over the top of the tranny) to hold it up out of the way. Replacing the neutral safety switch was not hard except for removing and (especially) reinstalling the top screw that holds the switch to the transmission. I finally got the top screw started by loosely inserting the (easy) front screw to insure the switch was about in the right position and then using my left hand to start the top screw. It is a very tight squeeze. Job probably took 2 hours including setup and cleanup. Scott Ritchey Kittrell NC 1982 300SD 220K 1979 300TD 350K -- next part -- A non-text attachment was scrubbed... Name: winmail.dat Type: application/ms-tnef Size: 2192 bytes Desc: not available Url : /pipermail/mercedes_okiebenz.com/attachments/20060625/dbdae967/attachment.bin
Re: [MBZ] Neutral Safety Switch - Final Report
Should you ever do this again (probably not on that car!), replace the slotted screws with the hex head screws MB sometimes uses. Vastly easier Peter
Re: [MBZ] Neutral Safety Switch - Final Report
Peter Frederick wrote: Should you ever do this again (probably not on that car!), replace the slotted screws with the hex head screws MB sometimes uses. Vastly easier Guess I was lucky; my car had hex screws and they were hard enough. Don't know how I could have done it with slotted. Scott Ritchey Kittrell NC 1982 300SD 220K 1979 300TD 350K
Re: [MBZ] Neutral Safety Switch - Final Report
Right angle screwdriver and LOTS of patience (and blue air). Peter
Re: [MBZ] Neutral Safety Switch
Yes. Adjust switch to get alignment. Peter
[MBZ] Neutral Safety Switch
The neutral safety switch on my 82 300SD has deteriorated over the last year or so. The engine has always cranked with the shifter in neutral, but park is another matter. At first, It would not crank in park after a cold soak. Now it only cranks in park after the engine is hot. I experimented with a surplus switch and it seems that the neutral position is very sensitive while park makes contact over a wide range of shifter movement. In any case, I decided to replace the switch with new. By the way, the shift bushings are OK. Question. I'm looking for advice on aligning the new switch. It appears that the switch is in the neutral position when the hole in the end of plastic arm aligns with a hole on the plastic switch cover. Is this correct? Thanks. Scott Ritchey Kittrell NC 1982 300SD 220K 1979 300TD 350K = -- next part -- A non-text attachment was scrubbed... Name: winmail.dat Type: application/ms-tnef Size: 1840 bytes Desc: not available Url : http://okiebenz.com/pipermail/mercedes_okiebenz.com/attachments/20060= 615/48eb7c98/winmail.bin
[MBZ] Neutral Safety Switch Adjust
The neutral safety switch on my 300SD is acting up again. It works fine in warm weather and fine in neutral, but won't start in park when it's real cold. After the engine has run a while, it restarts in park just fine. I suspect the switch just needs adjustment and maybe cleaning. Any advice appreciated. Thanks. Scott Ritchey Kittrell NC 1982 300SD 220K 1979 300TD 350K = -- next part -- A non-text attachment was scrubbed... Name: winmail.dat Type: application/ms-tnef Size: 1584 bytes Desc: not available Url : http://striplin.net/pipermail/mercedes_striplin.net/attachments/20051= 207/d9e2d64e/winmail.bin
Re: [MBZ] Neutral Safety Switch Adjust
Scott Ritchey wrote: The neutral safety switch on my 300SD is acting up again. It works fine in warm weather and fine in neutral, but won't start in park when it's real cold. After the engine has run a while, it restarts in park just fine. I suspect the switch just needs adjustment and maybe cleaning. Any advice appreciated. Thanks. As the shift linkage bushing wears, the neutral safety switch becomes unreliable - cold weather often induces failure. Replacing the shift lever bushings is the least expensive and only permanent cure for that. Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 182Kmi, '84 190D 2.2 229Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi
Re: [MBZ] Neutral Safety Switch Adjust
Found out on my '82 that the culprit was the bushings in the shift linkage. Too much play, not bad enough for the tranny, but marginal for the switch. There is no adjustment on the switch AFAIK. On 12/7/05, Scott Ritchey [EMAIL PROTECTED] wrote: The neutral safety switch on my 300SD is acting up again. It works fine in warm weather and fine in neutral, but won't start in park when it's real cold. After the engine has run a while, it restarts in park just fine. I suspect the switch just needs adjustment and maybe cleaning. Any advice appreciated. Thanks. Scott Ritchey Kittrell NC 1982 300SD 220K 1979 300TD 350K -- next part -- A non-text attachment was scrubbed... Name: winmail.dat Type: application/ms-tnef Size: 1584 bytes Desc: not available Url : http://striplin.net/pipermail/mercedes_striplin.net/attachments/20051207/d9e2d64e/winmail.bin ___ 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://striplin.net/mailman/listinfo/mercedes_striplin.net -- Hans Neureiter, Houston, TX '82 300SD, '95 E300D
Re: [MBZ] Neutral Safety Switch Adjust
Scott Ritchey wrote: The neutral safety switch on my 300SD is acting up again. It works fine in warm weather and fine in neutral, but won't start in park when it's real cold. After the engine has run a while, it restarts in park just fine. I'd start with checking the external shift linkage. Are the bushings tight or sloppy? Is the adjustment perfect?
Re: [MBZ] Neutral Safety Switch Adjust
[EMAIL PROTECTED] wrote: In a message dated 12/7/2005 8:09:24 P.M. US Mountain Standard Time, [EMAIL PROTECTED] writes: The neutral safety switch on my 300SD is acting up again. It works fine in warm weather and fine in neutral, but won't start in park when it's real cold. After the engine has run a while, it restarts in park just fine. I suspect the switch just needs adjustment and maybe cleaning. Any advice Scott, On my 79, I removed the switch, took it apart and cleaned it. It resides in a very dirty area on the outside of the transmission. Be very careful when unplugging the wire harness as the locking tabs are brittle and should not be bent any more than absolutely necessary. It has worked fine for years since cleaning it. Why would dirt cause the switch to fail only when it was cold? Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 182Kmi, '84 190D 2.2 229Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi
Re: [MBZ] Neutral Safety Switch Adjust
Depends on the moisture content of the dirt. On 12/8/05, Marshall Booth [EMAIL PROTECTED] wrote: J Why would dirt cause the switch to fail only when it was cold? Marshall -- 1977 240D 1972 Honda CB-500K motorcycle http://www.airamericaradio.com/listen
Re: [MBZ] Neutral safety switch
Lt. Don and all who contributed, Thanks for the info. I'm going to wtart with the switch then on to the ignition switch if that doesn't work. Dennis Perkins 84 300SD Subject: Re: [MBZ] Neutral safety switch To: Mercedes mailing list [EMAIL PROTECTED] Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=iso-8859-1 It is on the side of the transmission, driver's side. It isn't difficult to get to if the car is on a lift or wheel ramps, but it is pretty close quarters if all four wheels are sitting on the pavement.
Re: [MBZ] Neutral safety switch
Is this switch readily accessible and would it be advisable to disconnect the battery, jump across the switch and try and start the car. Dennis Perkins 84 300SD Yes, most of the starting circuit is by-passed when you start it from under the hood at the solenoid terminals. The neutral safety switch is the most common cause, but it could also be the ignition switch itself. I think it's time to crawl under the car and examine the switch on the side of the tranny, and the wires attached (hopefully) to it.
Re: [MBZ] Neutral safety switch
It is on the side of the transmission, driver's side. It isn't difficult to get to if the car is on a lift or wheel ramps, but it is pretty close quarters if all four wheels are sitting on the pavement. On 8/27/05, Dennis Perkins [EMAIL PROTECTED] wrote: Is this switch readily accessible and would it be advisable to disconnect the battery, jump across the switch and try and start the car. Dennis Perkins 84 300SD Yes, most of the starting circuit is by-passed when you start it from under the hood at the solenoid terminals. The neutral safety switch is the most common cause, but it could also be the ignition switch itself. I think it's time to crawl under the car and examine the switch on the side of the tranny, and the wires attached (hopefully) to it. ___ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net -- 1977 240D 1972 Honda CB-500K motorcycle http://www.airamericaradio.com/listen
