Re: [MBZ] Adjusting ALDA
While browsing the site you suggested ( http://www.w124performance.com/images/OM603_injection/ ) I came across the url http://www.w124performance.com/images/OM603_intake/ where there are pages showing the EGR and what appears to be the elimination of the EGR. Has the EGR actually been removed? Is this a procedure that should be consider under what conditions? Thanks - Sincerely, Larry T ('74 911, '67 MGB, 91 300D Turbo) A Blood Test for your oil - www.youroil.net For Test Results http://members.rennlist.com/oil Weber Carb Stuff http://members.rennlist.com/webercarbs http://members.rennlist.com/my_911/Index.htm For my Paint Job Info - Original Message - From: Marshall Booth [EMAIL PROTECTED] To: Mercedes Discussion List [EMAIL PROTECTED] Sent: Monday, May 15, 2006 4:34 PM Subject: Re: [MBZ] Adjusting ALDA [EMAIL PROTECTED] wrote: I've seen 2 methods for adjusting the ALDA - turning the set screw .5 to 1.5 turns or adding a shim. Is there a preferred method? Why is one better than the other? I need to adjust it and want to use the best method - I also plan to check the pressure hose and and banjo fitting. Thanks - BTW, I hope to use the ALDA removal method shown at http://www.w124performance.com/images/OM603_injection/ where the intake manifold is left in place. There is NO really correct way as Mercedes discourages any adjustment in the field. Still they finally did publish a description in the late '80s/early 90s (attached) and that might be considered preferred. It CAN be done on an OM602.96 engine without pulling off the intake manifold (it just looks impossible). The screw adjustment (as outlined) is MUCH easier and minor adjustments a quick and easy. Establishing the correct shim thickness is more of a challenge. 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) -- next part -- A non-text attachment was scrubbed... Name: ALDA_adj.pdf Type: application/pdf Size: 69965 bytes Desc: not available Url : http://striplin.net/pipermail/mercedes_striplin.net/attachments/20060515/aba8eab3/ALDA_adj.pdf ___ http://www.striplin.net 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
Re: [MBZ] Adjusting ALDA
Changing the shim is the correct method, the screw is to adjust the travel of the plunger inside the ALDA, not to set the correct zero point. It isn't possible, I don't believe, to ruputure the diaphram with shim adjustments, but it is definitely possible if you turn the screw too far. Peter
Re: [MBZ] Adjusting ALDA
Marshall wrote:CAN be done on an OM602.96 engine without pulling off the intake manifold (it just looks impossible). Biy Howdy!! Does it ever! I spent 10 minutes planning my attack and it does look to be *impossible* but the authors (of the above link) comments on removal taking less than 2 minutes is enough to convince me to try! Is it better to turn the adjusting screw in 1/2 turn increments? Or should I go with 1.5 turns and back it down if needed? I believe I read that I'll get smoke if it's adjusted too far. BTW, I've searched the manual (on CD) for the EGR photo and location but couldn't find it. I haven't gone thru all 89 pages of the engine manual but so far ... the Table of Contents do not list a EGR - but I'll find it. I did find a mouse nest though - removed the plastic cover behind the battery and started vacuuming to get some of the tree seeds out - and out comes a mouse nest from beneath the air intake. I'm sure it came from the PO in MA. re my start up problem. It used to only do it when the temp was below - not it's doing it at 60 and down. Also, it used to only do it when the engine had sat for 10 or more hours. This morning it stumbled after sitting for only 2 hours after a 20+ mile drive. It will smooth out pretty quickly - especially with my foot to the floor - It seems to me like there might be some kind of cold start device that's not working properly - or maybe an emissions control device that take a few seconds to settle down? I've changed the fuel filters twice and used a fuel conditioner - without any indication I may have an algae problem - and I'm using a quality fuel station that pumps a lot of fuel to truckers. It may be fuel related, but it's not a fuel problem - if that makes any sense? Oh well, I need to keep studying the engine systems schematics - probably need to spend some time with the electrical schematics also -- Thanks for everyone's help ;-) Sincerely, Larry T ('74 911, '67 MGB, 91 300D Turbo, 78 240D (at 285k running perfectly)) A Blood Test for your oil - www.youroil.net For Test Results http://members.rennlist.com/oil Weber Carb Stuff http://members.rennlist.com/webercarbs http://members.rennlist.com/my_911/Index.htm For my Paint Job Info - Original Message - From: Marshall Booth [EMAIL PROTECTED] To: Mercedes Discussion List [EMAIL PROTECTED] Sent: Monday, May 15, 2006 4:34 PM Subject: Re: [MBZ] Adjusting ALDA [EMAIL PROTECTED] wrote: I've seen 2 methods for adjusting the ALDA - turning the set screw .5 to 1.5 turns or adding a shim. Is there a preferred method? Why is one better than the other? I need to adjust it and want to use the best method - I also plan to check the pressure hose and and banjo fitting. Thanks - BTW, I hope to use the ALDA removal method shown at http://www.w124performance.com/images/OM603_injection/ where the intake manifold is left in place. There is NO really correct way as Mercedes discourages any adjustment in the field. Still they finally did publish a description in the late '80s/early 90s (attached) and that might be considered preferred. It CAN be done on an OM602.96 engine without pulling off the intake manifold (it just looks impossible). The screw adjustment (as outlined) is MUCH easier and minor adjustments a quick and easy. Establishing the correct shim thickness is more of a challenge. 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) -- next part -- A non-text attachment was scrubbed... Name: ALDA_adj.pdf Type: application/pdf Size: 69965 bytes Desc: not available Url : http://striplin.net/pipermail/mercedes_striplin.net/attachments/20060515/aba8eab3/ALDA_adj.pdf ___ http://www.striplin.net 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
Re: [MBZ] Adjusting ALDA
[EMAIL PROTECTED] wrote: I've seen 2 methods for adjusting the ALDA - turning the set screw .5 to 1.5 turns or adding a shim. Is there a preferred method? Why is one better than the other? I need to adjust it and want to use the best method - I also plan to check the pressure hose and and banjo fitting. Adjusting the screw is easier. Adding a shim does not require removing the anti-tamper cap. I've never heard of anyone having problems with an emissions check station noticing the missing cap, but I imagine it could happen. Adding a shim is also helpful if you need more adjustment than the screw can provide. There is no defined end stop but cranking it too far will damage the ALDA.
Re: [MBZ] Adjusting ALDA
Thanks David - that's *exactly* what I needed to hear about. I believe my ALDA needs adjusting and wanted to know which was the easiest. Marshall mentioned I should adjust it shortly after I described some symptoms I was having. I'm finally getting around to it. Thanks again -- Sincerely, Larry T ('74 911, '67 MGB, 91 300D Turbo) A Blood Test for your oil - www.youroil.net For Test Results http://members.rennlist.com/oil Weber Carb Stuff http://members.rennlist.com/webercarbs http://members.rennlist.com/my_911/Index.htm For my Paint Job Info - Original Message - From: David Brodbeck [EMAIL PROTECTED] To: Mercedes Discussion List [EMAIL PROTECTED] Sent: Monday, May 15, 2006 3:18 PM Subject: Re: [MBZ] Adjusting ALDA [EMAIL PROTECTED] wrote: I've seen 2 methods for adjusting the ALDA - turning the set screw .5 to 1.5 turns or adding a shim. Is there a preferred method? Why is one better than the other? I need to adjust it and want to use the best method - I also plan to check the pressure hose and and banjo fitting. Adjusting the screw is easier. Adding a shim does not require removing the anti-tamper cap. I've never heard of anyone having problems with an emissions check station noticing the missing cap, but I imagine it could happen. Adding a shim is also helpful if you need more adjustment than the screw can provide. There is no defined end stop but cranking it too far will damage the ALDA. ___ http://www.striplin.net 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
Re: [MBZ] Adjusting ALDA
[EMAIL PROTECTED] wrote: I've seen 2 methods for adjusting the ALDA - turning the set screw .5 to = 1.5 = turns or adding a shim. = Is there a preferred method? Why is one better than the other? I need to adjust it and want to use the best method - I also plan to chec= k = the pressure hose and and banjo fitting. = Thanks - BTW, I hope to use the ALDA removal method shown at = http://www.w124performance.com/images/OM603_injection/ where the intake = manifold is left in place. There is NO really correct way as Mercedes discourages any adjustment = in the field. Still they finally did publish a description in the late = '80s/early 90s (attached) and that might be considered preferred. It CAN be done on an OM602.96 engine without pulling off the intake = manifold (it just looks impossible). The screw adjustment (as outlined) is MUCH easier and minor adjustments = a quick and easy. Establishing the correct shim thickness is more of a = challenge. 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) -- next part -- A non-text attachment was scrubbed... Name: ALDA_adj.pdf Type: application/pdf Size: 69965 bytes Desc: not available Url : http://striplin.net/pipermail/mercedes_striplin.net/attachments/20060= 515/aba8eab3/ALDA_adj.pdf