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#16
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Quote:
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#17
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thanks craig. it prolly is. the gdl-online manual says to check it out when doing cc amp repairs. had no idea whre it was located.
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currently [1981 300 td tdidi 165500 dark brown/palamino-Brownie-mine-3k miles of ownership 1983 240d 162+++ Anthricite grey w/ henna red interior and hella lights-wifes car-Red the above two cars are for sale and can be seen on the cars for sale thread here. pix also available. 240d-144+ Manilla Yellow w/ palmino interior-greasecar kit-Blondie-the college kids car 23" gt 21 speed still on original tires-still got the nubs 21" khs tandem |
#18
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Here are some photos (83 240D).
1. The actuator 2. The connector on the left fender 3. The contacts used for the GDL test procedure. |
#19
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Now that we have pics for the newer style, does anybody have any for the older style? I have a 78 300D and a 79 300SD that both will accelerate but let off the stem and it stops working.
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1959 Gravely LI, 1963 Gravely L8, 1973 Gravely C12 1982 380SL 1978 450 SEL 6.9 euro restoration at 63% and climbing 1987 300 D 2005 CDI European Delivery 2006 CDI Handed down to daughter 2007 GL CDI. Wifes ![]() |
#20
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The right solder
Just feel the need to chime in with my 2 cents. I used to teach a nuclear eletronics repair course. New to the MB worls, but electronics were my bag so:
1. The stuff on the board that looks like shelac is a conformal coating, designed to protect the board and circuit from moisture and atmosphere contaminants. 2. The "right" solder is eutectic. You can buy Sn63 at radio shack, it isn't much more expensive that 60/40 but for the novice is much easier to use. Sn63 has no plastic region, meaning that when you remove the heat, it instantly cools to a solid, no plastic region means no disturbed solder joint, fewer failures. 3. Please don't use a large solder gun with a trigger that buzzes when you squeeze it. Buy a 25 to 35 watt pencil tip iron, preferably with a three wire plug and grounded tip to protect circuitry. If you apply too much heat there are two damage modes. Measling is when you slightly overheat, leave white dots on the board around the joint, not pretty, but not a big deal. If you overheat and burn it to brown it will get brittle and can physicaly fail. 4. Technique - To resolder a jointfirst clean both sides of the board with rubbing alcohol and a acid brush (metal handles brush with 1/2 inch bristles). Fos most touch ups you don't need to add additional flux, the flux in the solder is sufficient. Warm the iron up to full temp, add a touch of solder to the iron tip to form a SMALL drop (known as a heat bridge), then touch the iron tip/drop to the joint/lead/board junction, the solder on the tip will make the heat transfer much better and will instantly make the joint melt. Count to three and remove the heat. After you've done all of the connections, again clean the junctions with alcohol. You can also clean the board with electonic cleaner as long as it is zero residue. The intent is to remove anly leftover flux which can attract moisture, and again cause failure. You can reapply a coat of conformal coating, a thin coat will do. Summary, good solder, the right iron, a heat bridge, three seconds of heat, clean the board. Thanks to those who've helped me out, hope to return the favor. Chuck. ![]() |
#21
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yes thanks to all- my cruise works again! kinda jerky every now and again, but it works.
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1984 123.193 372,xxx miles, room for Seven. 1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven. |
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