Re: [MBZ] Priming the Oil System
Fmiser wrote: It's a fact that Marshall wrote: Mercedes diesels DO NOT require anything except that you don't drive until the oil pressure reaches 3+ bar. At cranking speeds, Mercedes has made provisions for there to be sufficient oil to be present even after you completely drain or suction the oil out of the engine and replace it by pouring into the valve cover or into the oil filter housing. If you've used a group IV synthetic there will be even less of a problem (MUCH higher film strength). Is this true even after a teardown/rebuild? --Philip, curious When you properly reassemble an engine you lubricate the parts as you go along car. That's just fine until the oil pressure builds as you crank the engine to start the car. At cranking speeds and load, all that's needed is that there be a molecule thick coating of oil and within a few moments of starting there's a LOT more oil. 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] Priming the Oil System
My German friend always pre-oiled through the oil pressure sender fitting as he had a separate oiling pump. Standard practice where he was taught. Sure, if you've got the tool. I'd use it if I had it, but there's normally no need. Either residual engine oil or assembly lube will do the trick, as appropriate. -- Jim
Re: [MBZ] Priming the Oil System
Thanks for the information. Actually, I didn't disassemble any bearings while cleaning up after the disintegrated vacuum pump. But I did remove the back of the oil pump to make sure the screen and suction line were clean. So I am mostly worried about the oil pump not priming. Or is the pump on a 606 so good at self priming that it is never an issue? If I poured oil into the filter housing, would the filter drain into the oil pump? Thanks again, Ned Kleinhenz '95 E300D x2 '85 300D '80 300TD
Re: [MBZ] Priming the Oil System
Is not the oil pump practically submerged in the sump? I don't think I'd worry too much about it priming, this is oil we're talking about. It's hard enough to keep it in the engine when we try to, I can't see it avoiding the pickup tube. -- Jim
Re: [MBZ] Priming the Oil System
I primed my motor because it had lost oil pressure and I didn't want to risk cranking the motor with dry bearings. It also allowed me to confirm that oil was getting to the cams / lifters / etc. while I had the valve cover off (since I didn't / couldn't run the motor to do so). If you had normal oil pressure prior to working on your motor, your bearings most likely still have a film of oil on them and should be fine. If you are interested, I primed it through the oil pressure sender hole using a modified pressure sprayer (which was new and had never had anything but oil in it). Regards, J.B. Hebert At 02:01 PM 7/20/2006, you wrote: I noticed that JB Hebert recently mentioned that he manually primed the lubrication system through the pressure sender fitting when he was ready to restart his 606 engine after working on the oil pump. His statement make me consider that maybe I should be doing something like this before I restart my 606 engine. What is the reason for priming? Are we worried the oil pump will not be able to develop suction? Are we concerned the bearings may run (kind of) dry for too long? Can anybody describe the procedure and equipment to do this? Would cranking the engine for a long time before it starts accomplish the same thing? Thanks for your help, Ned Kleinhenz '95 E300D x2 '85 300D '80 300TD ___ 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 -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.1.394 / Virus Database: 268.10.2/393 - Release Date: 7/19/2006 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.1.394 / Virus Database: 268.10.3/394 - Release Date: 7/20/2006
[MBZ] Priming the Oil System
I noticed that JB Hebert recently mentioned that he manually primed the lubrication system through the pressure sender fitting when he was ready to restart his 606 engine after working on the oil pump. His statement make me consider that maybe I should be doing something like this before I restart my 606 engine. What is the reason for priming? Are we worried the oil pump will not be able to develop suction? Are we concerned the bearings may run (kind of) dry for too long? Can anybody describe the procedure and equipment to do this? Would cranking the engine for a long time before it starts accomplish the same thing? Thanks for your help, Ned Kleinhenz '95 E300D x2 '85 300D '80 300TD
Re: [MBZ] Priming the Oil System
ned kleinhenz wrote: I noticed that JB Hebert recently mentioned that he manually primed the lubrication system through the pressure sender fitting when he was ready to restart his 606 engine after working on the oil pump. His statement make me consider that maybe I should be doing something like this before I restart my 606 engine. What is the reason for priming? Are we worried the oil pump will not be able to develop suction? Are we concerned the bearings may run (kind of) dry for too long? Can anybody describe the procedure and equipment to do this? Would cranking the engine for a long time before it starts accomplish the same thing? Mercedes diesels DO NOT require anything except that you don't drive until the oil pressure reaches 3+ bar. At cranking speeds, Mercedes has made provisions for there to be sufficient oil to be present even after you completely drain or suction the oil out of the engine and replace it by pouring into the valve cover or into the oil filter housing. If you've used a group IV synthetic there will be even less of a problem (MUCH higher film strength). 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)
