Good point, hadn’t thought about those. I would have spent more time disassembling the old compressor to find out than it took to just swap it out with a new one. I think it took us under an hour to R&R the compressor and receiver/dryer on his W210.
-D On Jul 26, 2022, at 3:14 PM, Rick Knoble via Mercedes <mercedes@okiebenz.com<mailto:mercedes@okiebenz.com>> wrote: Or a cracked or broken valve plate. It will leak internally and never build pressure. High side and low side will have zero, or very little pressure difference. Of course you don't know until you start troubleshooting. Rick From: mercedes@okiebenz.com<mailto:mercedes@okiebenz.com> Sent: July 26, 2022 1:40 PM To: mercedes@okiebenz.com<mailto:mercedes@okiebenz.com> Reply-to: mercedes@okiebenz.com<mailto:mercedes@okiebenz.com> Cc: ka...@striplin.net<mailto:ka...@striplin.net> Subject: Re: [MBZ] The GL AC So with these compressors it could be the swash plate getting stuck, or solenoid going bad. Sent from my iPhone On Jul 26, 2022, at 1:33 PM, dan penoff.com<http://penoff.com/><http://penoff.com<http://penoff.com/>> via Mercedes <mercedes@okiebenz.com<mailto:mercedes@okiebenz.com><mailto:mercedes@okiebenz.com>> wrote: I’ve worked with and am familiar with variable displacement pumps like this, I was just curious to see how they controlled the swash plate and how it interfaced with the pistons. Pretty slick. -D On Jul 26, 2022, at 12:49 PM, Bob Rentfro via Mercedes <mercedes@okiebenz.com<mailto:mercedes@okiebenz.com><mailto:mercedes@okiebenz.com>> wrote: We utilize that pump technology in the turbine control oil system at the old nuke plant. Awesome video. If I were still trying to teach the little nubbins the concepts of the technology, I would likely used diagnoses Dan’s video. AZBob Sent from my iPhone On Jul 26, 2022, at 7:03 AM, dan penoff.com<http://penoff.com/><http://penoff.com<http://penoff.com/>> via Mercedes <mercedes@okiebenz.com<mailto:mercedes@okiebenz.com><mailto:mercedes@okiebenz.com>> wrote: That was great, thanks for linking to this! I understood the concept of the variable displacement compressor and swash plate, but wasn’t clear on how it was controlled. Good to know. -D On Jul 26, 2022, at 3:27 AM, Rick Knoble via Mercedes <mercedes@okiebenz.com<mailto:mercedes@okiebenz.com><mailto:mercedes@okiebenz.com>> wrote: Here's a video I found that gives a very good explanation of how the variable displacement compressor works. It's not a Benz, but the idea is the same. Either the solenoid valve isn't working, or the valve plate has failed with a crack or something. https://youtu.be/xwIOL7ghrnI Rick ________________________________ From: Mercedes <mercedes-boun...@okiebenz.com<mailto:mercedes-boun...@okiebenz.com><mailto:mercedes-boun...@okiebenz.com>> on behalf of Kaleb Striplin via Mercedes <mercedes@okiebenz.com<mailto:mercedes@okiebenz.com><mailto:mercedes@okiebenz.com>> Sent: Monday, July 25, 2022 7:18:36 PM To: Mercedes Discussion List <mercedes@okiebenz.com<mailto:mercedes@okiebenz.com><mailto:mercedes@okiebenz.com>> Cc: Kaleb Striplin <ka...@striplin.net<mailto:ka...@striplin.net><mailto:ka...@striplin.net>> Subject: Re: [MBZ] The GL AC True. Well the damn thing has not blown any cold air in 2 hours. I think tomorrow I’m going to recover the refrigerant just to see if it’s leaked any since I recharged it. Maybe it’s got a small leak or something. Sent from my iPhone On Jul 25, 2022, at 7:02 PM, Floyd Thursby via Mercedes <mercedes@okiebenz.com<mailto:mercedes@okiebenz.com><mailto:mercedes@okiebenz.com>> wrote: More fuel efficient I am sure. They can save .01% fuel by going to a more expensive and complex system that will cost 8X as much in the long run but you save $3.92 a year in fuel and the EPA and EUCommies are happy you are not killing the planet as fast even though the life-cycle environmental costs of the new part is much worse than the old type. Progress! -_FT On 7/25/22 7:39 PM, Kaleb Striplin via Mercedes wrote: Yes exactly. I don’t really understand why they had to make it more complicated. Sent from my iPhone On Jul 25, 2022, at 6:37 PM, Jim Cathey<jim.cathey...@gmail.com<mailto:jim.cathey...@gmail.com><mailto:jim.cathey...@gmail.com>> wrote: So, we change from a simple, easily diagnosed system with its most failure-prone part being an external, non-pressurized bolt-on to one with all of that internal, difficult to diagnose, and expensive to replace. Progress! The wretched X5 has that system, and of course it failed and needed a new (rebuilt) compressor, with all the trimmings. -- Jim _______________________________________ http://www.okiebenz.com To search list archiveshttp://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- --FT _______________________________________ http://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 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 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 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 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 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 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<http://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 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
