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#1
04-09-2009, 10:48 AM
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Tweaking the ALDA...wish me luck...
After some research and time, I've strapped on a pair of balls to try and tweak the ALDA myself. Although I still have 3 questions:
What is the set point for the alda? Is it set all the way CW or in between or more towards CCW? Can you get these shims at Home Depot or something? I prefer to do this than to mess up the screw. Should I be EXTRA EXTRA careful with the locknut and screw? AKA being extremely delicately turning it CCW? 
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#2
04-09-2009, 11:04 AM
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I'd be careful with the screw, but I don't see why anyone would need to be so rough with it that it would break. I just took the lock nut completely off and then adjusted it.
Be aware though- I don't know if others had this problem, but when I was re-tightening the locknut, it turned the screw along with it. In other words, I turned the screw CCW to enrich, but then when tightening it got turned back CW. So, I think mine is turned out about 1/2 to 3/4 turn. It made a difference, but nothing huge. I might try a bit more; my car was pretty quick before I messed around with it though, so I don't know how much of a difference it will make.
__________________
Dan 2005 E320 CDI - 246k 1987 300SDL TD05-16g, Herlevi pump, Elbe manifold, 2.47 LSD - 213k Past: 1987 300D - 264k 
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#3
04-09-2009, 11:31 AM
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just remove it.
__________________
1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt
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#4
04-09-2009, 11:57 AM
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Quote:
__________________
1985 300D - 1984 Euro 280E AMG Clone (SOLD) - 1978 280CE (SOLD) - 1983 300D (SOLD) - 1981 300D (SOLD)
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#5
04-09-2009, 06:58 PM
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Quote:
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#6
04-09-2009, 09:03 PM
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It's an adjustment, there is no base setpoint.
Give it 1-1/2turns CCW and see what you've got. Be careful to not force it, if it's already at the limit of adjustment you will need to shim or replace it. Also check the diaphragm for leaks with your faithful mityvac.
__________________
 Gone to the dark side - Jeff
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#7
04-09-2009, 09:40 PM
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removing the alda
Quote:
Thanx Ian
__________________
Regards, Ian White 1995 E300 Diesel w124 OM606 2014 E550 w212 M278 biturbo 2001 BMW 740i E38 M62 (past) 1981 300SD w126 OM617 (past)
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#8
04-09-2009, 11:09 PM
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Two 27mm wrenches, remove it like a bolt, plug the boost line.
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#9
04-10-2009, 01:03 PM
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Quote:
The 603 uses one 27mm wrench on the bottom of the ALDA and one 24mm wrench on the nut.
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#10
04-10-2009, 01:31 PM
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UPDATE: I must say that I'm a big time newb and I did this pretty easily. I tweaked the [what was once virgin til now] ALDA 1.5 turns CCW. There were 2 things I was expecting and I'll say that I got 1 and 1/2.
1). It got faster (Big surprise) It's not as quick as the gasser, but a step closer to one. My head felt strange when I took it out for a drive and floored it. 2). It didn't smoke so much (I was kind of expecting a lot of smoke to be pouring out like a sooty truck). I press on the pedal for 1 second and it makes some smoke vs before the TWEAKING I didn't have much smoke at all. I personally want to adjust it even more! But I don't want to force the screw or even stretch it to the limit so I'm leaving it at 1.5 CCW. I'm not sure about the shim thing either so I'll have to get back to that sometime later....for the meantime, the car is that I don't have to floor it to get up to speed with cars passing me. Next on my DIY is the fan clutch upgrade so I hope fellow members can give me some tips. I saw the DIY on the R&R of the fan clutch so I'm refering to that. I'm still lost on the locking tool mechanism and the 8mm Hex socket. I also have a purge that I'd like to do today and an oil change at 185k.
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#11
04-10-2009, 01:36 PM
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My understanding, you adjust UNTIL you get smoke, then take back some until the smoke goes away. Meaning, if you're seeing smoke now, you are probably at the end of the worthwhile adjustment.
__________________
On some nights I still believe that a car with the fuel gauge on empty can run about fifty more miles if you have the right music very loud on the radio. - HST 1983 300SD - 305000 1984 Toyota Landcruiser - 190000 1994 GMC Jimmy - 203000  https://media.giphy.com/media/X3nnss8PAj5aU/giphy.gif
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#12
04-10-2009, 02:53 PM
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I question the flexibility got the ALDA diaphragms, wondering if they stiffen with age. I recommend shimming over removal. 20mm crush washer from a banjo bolt i had laying around worked like champ.
__________________
http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42
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#13
04-10-2009, 05:35 PM
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I yanked mine, but I'm running a custom setup with proper gauges...
__________________
$60 OM617 Blank Exhaust Flanges $110 OM606 Blank Exhaust Flanges No merc at the moment
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#14
04-20-2009, 03:57 PM
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Quote:
__________________
AJ 1985 300D (SOLD) 
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#15
04-20-2009, 04:12 PM
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Flooring it. I don't have any abnormal smoke at idle and my ALDA is gone.
__________________
$60 OM617 Blank Exhaust Flanges $110 OM606 Blank Exhaust Flanges No merc at the moment
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