I replaced my K1 spring a few weeks ago and it fixed my 2 - 3 cold flare. Unfortunately 3 - 4 started flaring when warm. I've adjusted the modulator, but the shifts are too hard. I searched past threads and found someone who said that installing the K1 spring into the 3 - 4 cylinder fixed their problem. Does anyone have the same experience? If not, what is the part # for the K2 spring? thanks

__________________
'81 300SD

In my 82 TD I replaced my K2 with a K1 kit, and it helped a tiny bit but not all that much. I don't think I'd bother trying it. I just get the Superior shift kit K722A-D. Here is a thread I started about my 2-3 flare. I never did get the shift kit. http://www.peachparts.com/shopforum/diesel-discussion/268570-3-4-flaring-shift.html

Here is a pic of my old K1 and K2 as well as a new K1

__________________

I was able to get just the K1 spring at the dealer. Is that possible with the K2, or do I have to contact the site that sells the superior kit and see if they'll sell me the K2 separately?

__________________
'81 300SD

Are you talking about 722.1 or 722.3?

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

I'm pretty sure that the 722.3 was in the early 126 chassis 300SD's.

I found this photo online of a 722.3 K1 spring cylinder which is exactly what mine looked like
http://inlinethumb12.webshots.com/39755/2974248260102947174S600x600Q85.jpg

__________________
'81 300SD

Indeed - I didn't know the 722.3 existed in 1981...

If you have EPC then you'll be able to get the part numbers - if not perhaps the dealer can help. I can only get as far as this via EverythingBenz - Mercedes-Benz Forum and Web Search Using Google

http://mb.ilcats.ru/part/class/1/ccode/F/cat/67R/type/722/subtype/303/group/27/subgr//vers//imgno/8

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Do let us know how that works out!!!

Thanks for the links Army. I found this link on Benzworld: K2 PART NUMBER MYSTERY - Benzworld.org - Mercedes-Benz Discussion Forum

The PDF service bulletin on that link is helpful. Biodiesel300TD said that the K1 didn't help much, but that could be because his clutch discs are too bad for a spring to be of any help. Like I said in the original post I've read on this forum that the K1 works for the 3 - 4 shift, but was hoping to hear of more than one success story before I go ahead with the job. It's a 30 minute job and $10.00 part, so I'll probably get to it soon.

__________________
'81 300SD

The K1 in the 3 - 4 cylinder did the trick. I was able to back off on the modulator a couple of notches and still get a firm 3 - 4 shift as well as getting rid of the clunk I was getting from the transmission when coming to a stop at traffic lights.

__________________
'81 300SD

for customer


***************************************************************

I have been unable to document exactly which 722 transmissions this fits.

This may help sort out what you need, Use Page Translation = it is in Russian.
http://www.oldmerin.net/board/lofiversion/index.php/t132382.html

K1 - spring kit 1262704477
K1 - piston 1262700335
K2 - part number on the tube is 1262778432, however the kit part number is 126 270 04 35
K2 - piston 1262700435
K2 - piston 1262700535
B1 - piston 1262700235
B1 - piston 1242700035

***************************************************

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

Site with Transmission Applications by year and mode.
Mercedes Benz Transmission Application

According to the above an 81 300SD has an 722.303 Transmission.

__________________
84 300D, 82 Volvo 244Gl Diesel

thanks for that link!!!

__________________
1983 300SD (daily driver)
1991 420SEL (work in progress)
1979 300SD (future replacement for 83 SD)

RIP:
1983 300SD (totalled)
1986 420SEL