[MBZ] Om603 Vacuum pump failure indicators
Is there any way to tell if an OM603 vacuum pump is about to fail , eg oil in vacuum lines etc/ noisy ? Peter ___ 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
Re: [MBZ] Om603 Vacuum pump failure indicators
Is there any way to tell if an OM603 vacuum pump is about to fail , eg oil in vacuum lines etc/ noisy ? Not really. If they're noisy then sure, but that's what's so insidious about these pumps. No warning sometimes. If the cover is loose and leaking then it's time, but that isn't actually the dangerous failure mechanism. -- 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
Re: [MBZ] Om603 Vacuum pump failure indicators
Peter Merle wrote: Is there any way to tell if an OM603 vacuum pump is about to fail , eg oil in vacuum lines etc/ noisy ? Here in USA, if the pump has the old style cover (the old ones are riveted and the new ones retained by screws if I remember correctly) and the engine has significant miles on it, we consider the pump, as expensive as it is, to be a preventive maintenance item, like an oil change. ___ 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
Re: [MBZ] Om603 Vacuum pump failure indicators
The dangerous failure mode is when the internal drive roller mechanism fails and it takes the front surface of the IP timing mechanism with it. The Manufacturer designed an updated vacuum pump that solves the problem. I replaced mine at 250,000 miles and the original looked like new. But this is when you want to replace one, once the damage starts it's too late. Thanks, Tom Hargrave 256-656-1924 www.kegkits.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Cathey Sent: Tuesday, September 04, 2007 7:59 AM To: Mercedes Discussion List Subject: Re: [MBZ] Om603 Vacuum pump failure indicators Is there any way to tell if an OM603 vacuum pump is about to fail , eg oil in vacuum lines etc/ noisy ? Not really. If they're noisy then sure, but that's what's so insidious about these pumps. No warning sometimes. If the cover is loose and leaking then it's time, but that isn't actually the dangerous failure mechanism. -- 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 ___ 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
Re: [MBZ] Om603 Vacuum pump failure indicators
Tom Hargrave wrote: The dangerous failure mode is when the internal drive roller mechanism fails and it takes the front surface of the IP timing mechanism with it. The Manufacturer designed an updated vacuum pump that solves the problem. I replaced mine at 250,000 miles and the original looked like new. But this is when you want to replace one, once the damage starts it's too late. And it can also drop ball bearings into the timing chain. :( John ___ 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
Re: [MBZ] Om603 Vacuum pump failure indicators
Here in USA, if the pump has the old style cover (the old ones are riveted and the new ones retained by screws if I remember correctly) The old style has a crimped-on cover. The new is crimped _and_ screwed. -- 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
Re: [MBZ] Om603 Vacuum pump failure indicators
Jim typed: crimped_and_ screwed. That describes me on most days Bob R. ___ 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
Re: [MBZ] Om603 Vacuum pump failure indicators
Peter Merle wrote: Is there any way to tell if an OM603 vacuum pump is about to fail , eg oil in vacuum lines etc/ noisy ? Peter There is NO reliable test other than to tear it down and measure clearances. In my experience, the early ones lasted 100-150kmi and the newer ones are good for 150-250kmi. If it's leaking CHANGE IT, an if the vacuum doesn't meet spec CHANGE IT. Marshall -- Marshall Booth Ph.D. Ass't Prof. (ret.) Univ of Pittsburgh School of Medicine [EMAIL PROTECTED] ___ 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
Re: [MBZ] Om603 Vacuum pump failure indicators
Tom Hargrave wrote: The dangerous failure mode is when the internal drive roller mechanism fails and it takes the front surface of the IP timing mechanism with it. The Manufacturer designed an updated vacuum pump that solves the problem. I replaced mine at 250,000 miles and the original looked like new. But this is when you want to replace one, once the damage starts it's too late. Bearings into the timing chain are a far more catastrophic and frequent occurrence than destruction of the timer. Dropping parts into the sump that can ultimately be picked up by the oil pump occurs more often than damaged timers. A failed vacuum pump on a 60x engine is to be avoided even if it means replacing perfectly good pumps from time to time. Marshall -- Marshall Booth Ph.D. Ass't Prof. (ret.) Univ of Pittsburgh School of Medicine [EMAIL PROTECTED] ___ 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
