Does anyone know where I can purchase (on-line) a K1 spring kit for a 1982 300sd? I have fixed vacuum leaks, adjusted the Bowden cable, modulator and have achieved a much better transmission shift. However, I would like to replace the K1 spring kit when I change the transmission filter and fluids. This should allow me the ability to reduce the firmness from 1-2.

Go here: http://catalog.peachparts.com/item.wws?qty=1&mfr=MBZ&sku=1262704477&price=15.00&cookieID=1Q51D2K1C1Q81CID6Y


Tim

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2009 VW TDI Jetta Sportwagon 172k miles (rear-ended harder than Elton John on 8/4/13. Total loss)

1991 Volvo 240 142k miles (T-boned by a stop sign runner. Total loss)

The K1 is for the 2 - 3 shift not the 1 - 2 shift. The 1 -2 shift can be adjusted with vacumn adjustments at the valve on the drivers side of the trans where the vac line attaches.

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1983 300SD
200000miles

This thread caught my eye because I'm experiencing hard 1-2 shifts, but everything else is baby butt smooth. Can you explain what you mean by "where the vac line attaches"? I've got a 124, so it's probably somewhere different than the 123.

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-justin

1987 300TD, 1987 300TD
2008 R32, 2000 Passat Wagon

You are correct. However, in order to eliminate the slip in 2-3 I have adjusted the modulator and Bowden cable. The result is a firm 1-2, smooth 2-3, slightly firm 3-4. So, when I change the K1 spring kit...I should be able to re-adjust and soften the 1-2 firm shift.

You are right in that after I replaced the K-1 it allowed me more versitility when adjusting everything else.

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1983 300SD
200000miles

There is a divice on the side of the transmission called the vac modulator, this is a colored plastic device,that you can adjust by taking off the cap and turning the key that is then exposed. If you do a search there have been tons of stuff written about this including how to that you will probably find in the DIY section.

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1983 300SD
200000miles

I had been chasing a transmission shifting issue that I finally fixed today.
The condition was a firm 1-2, soft 2-3, and slightly firm 3-4. After reviewing many posts as I am a MB Newbie, I replaced the old and brittle vacuum lines. I experienced only a slight improvement...basically the same firm 1-2, soft 2-3, and slightly firm 3-4. Next, I adjusted the Modulator and Bowden cable. The adjustments improved the soft 2-3...but firmed the 1-2 even more. I ordered a K1 spring kit as that seemed like the next step to fix. I stumbled across another post that recommended replacing the plastic valve levers as they wear to the point that the valve is not functioning properly. I removed the plastic black box on the valve cover and sure enough they were shot. I had seen a DIY on DieselGiant.com so I ordered the plastic valve levers and replaced today. I wish I checked the valve levers first as the Bowden cable and Modulator adjustments were not necessary. However, I am very happy now, the transmission is shifting like new!

http://www.dieselgiant.com/trannyleverreplace.htm