[christosch]

hi i have sl 30-24valve 1991 year and i have problem with gearbox sometimes no shift from 4 to 5 speed or shift to 5 and again go to 4 speed if someone can help me ????????

 

[MAVA]

I'm assuming you have a 722.5xx transmission.

This may be a easy fix. The shifter has a electrical switch that is toggled to engage the fifth gear, and it may be cleaned at times, but the switch can be bypassed, and tested with another switch in parallel to qualify the problem.

I hope this helps you trace the problem,

Martin

 

[monkeymerc]

hi i have sl 30-24valve 1991 year and i have problem with gearbox sometimes no shift from 4 to 5 speed or shift to 5 and again go to 4 speed if someone can help me ????????

I think it's a later gearbox as the early ones had a 4 speed box ,so the installation would be the first thing to look at,hope this helps :thumbsup:

 

[MAVA]

This is a handy chart..

mercedes transmissions

 

[jimdollar]

gearbox

This was an option then I imagine as mine is a 1991 but has the hydraulic type 4 speed only.:crybaby2:

 

[MAVA]

Jimdollar,

On the (your drivers side) transmission rim where the pan mates-up on the side. The model number appears with a few other numbers, or you can post your vin here I can look-up what you have.

Martin

 

[christosch]

hi again thanks you try to help ... the gearbox is 722.5xx i .. i tell what i do till now i
change oil and filter - i adjust the cable frond and back this for the kickdown still nothing

 

[MAVA]

Fifth gear is engaged by mechanical switch on the shifter. Then the switch triggers the shift solenoid on the transmission. On my S320, the shifter is different then on the SL's. I'm pretty sure you google your problem on the web. This is a common problem with the 722.5.

In the coming weeks, I will take my transmission apart, and get to the shifter to post some pictures.

Martin

 

[spitfire980]

We have the same transmission, check my thread and check on these connections. It should help you

http://www.benzworld.org/forums/r129-sl-class/1661132-im-stumped-one-no-5th-gear.html

 

[christosch]

hi again !!!!!!!!!! thanks all for the help you give ... i find the problem today i check the switch for to the shift knob was ok i clean the fuse and close litle the pins and everything ok the problem was the two pins my car is working again just fine !!!!!!!!!!!!!!!!!:thumbsup:

 

[po7553po]

could you tell me which pins and fuse you are talking about

 

[christosch]

the switch on the shift knob who read the 4 speed have two switch one for the sport - economy and one who read the 4 speed the switch was ok but the fuse this switch have the problem have no good contact i just close the pins litle