rebuilt autobox flaring on 2nd-3rd change when cold (722.3 I think )

[tjamesbo]

after a long sob story of fitting a 2nd hand box to my 1994 320TE and finding it faulty i got the box rebuilt ./ reconditioned by a local transmission specialist however the box is flaring ( some 500 rpm , more if your foot is down a bit ) when the car is cold ( transmission specifically ) for about 10-15 minutes when its hot everything changes fine and there is no flaring
the rebuild guy / firm wants to put some additive in it, which I'm dubious of, i have heard something about the K1 and K2 springs which can cause flaring and stops if they are replaced K2 I think is the 2nd to 3rd one ? not sure if this is external to the box or internal anyone any in depth knowledge of this when hot the box does not flare 2nd to 3rd at all even under foot to the floor acceleration through all gears

 

[bladecrazy]

I thought flaring was worn clutch packs?, is there any adjustment on the box at all?, is it vacuum operated?.

 

[Richard Moakes]

A1262704477 is a kit from Mercedes to help with 2-3 flare on 722.3 transmissions

You have to drop the transmission pan to fit it, but it can be done DIY on a driveway, it helped an old gearbox on one of my W124’s to last a few more years

 

[star]

Have you check/adjusted the modulating pressures?

 

[tjamesbo]

thanks for the above i was looking for some guidance before the car goes back there ill mention the kit and the pressure check before i book it in