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Home >> Mercedes Benz >> 2019 >> S450 Base >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Automatic Transmission - 222 Chassis (3 Of 4) >> Testing & Repair >> Remove/Install Wet Clutch - AR27.51-P-0300MNE

Remove/Install Wet Clutch - AR27.51-P-0300MNE

Transmission 725.06/09/163 

Fig 1: Automatic Transmission Wet Clutch Components Location - Transmission 725.09
G15366933Courtesy of MERCEDES-BENZ USA
CAUTION Risk of injury  to skin and eyes due to handling of transmission oil. Health risk caused by swallowing transmission oil Wear protective gloves, protective clothing and safety glasses.
Do not pour transmission oil into beverage bottles.
AS00.40-Z-0001-01A
  Notes on automatic transmission   AH27.19-P-0001-01NKB
REMOVING Remove     
1 Remove transmission (1). Transmission 725.0 in model 290 with engine 177
with code M005 (Vehicles with 4MATIC/all-wheel drive)
Transmission 725.163 in model 290 with engine 177.8
AR27.10-P-0505MNI
    Transmission 725.09 in model 232 AR27.10-P-0505SLY
    Transmission 725.06 in model 205 with engine 177 AR27.10-P-0505LWX
    Transmission 725.09 in model 213 with engine 177
with code M005 (Vehicles with 4MATIC/all-wheel drive)
AR27.10-P-0505MNE
    Transmission 725.06 in model 217, 222 with engine 177
except code M005 (Vehicles with 4MATIC/all-wheel drive)
AR27.10-P-0505MNM
    Transmission 725.09 in model 217, 222 with engine 177
with code M005 (Vehicles with 4MATIC/all-wheel drive)
AR27.10-P-0505MNN
2 Detach wet clutch (2) from transmission input shaft without tilting it.    
3 Check whether sinuous spring (5) is seated on transmission input shaft. If a complaint has been submitted,

Remove sinuous spring (5) from wet clutch (2).
 
4 Allow transmission oil from wet clutch (2) to drain through a clean rag. If metal shavings are present on rag,

replace wet clutch (2).
 
5 Remove sealing rings (4, 6). NOTES
Always replace the sealing rings (4, 6).
Otherwise leaks may occur.
 
6 Remove sinuous spring (5). NOTES
Always replace sinuous spring (5).
Otherwise leaks may occur.
 
7 Remove radial shaft sealing ring (3).   AR27.40-P-0300MNE 
INSTALLING Install     
8 Install new radial shaft sealing ring (3).   AR27.40-P-0300MNE 
9 Install new sealing ring (6).    
10 Install new sinuous spring (5).    
11 Install new sealing ring (4).    
12 Insert wet clutch (2) by moving it lightly to and fro without tilting it. NOTES
Do not use force.
Otherwise, the axial end stop on the wet clutch (2) will be destroyed.
IMPORTANT The oil pump drive spigots must latch into the disengagement shift tubes of the wet clutch (2).
 
13 Push lightly on wet clutch (2) to check whether it gives way. NOTES
Do not push the wet clutch (2) up to the end stop in the transmission housing.
Otherwise, the sinuous spring (5) will lose its preload.
 
14 Install the transmission (1). Transmission 725.06 in model 205 with engine 177 AR27.10-P-0505LWX
    Transmission 725.09 in model 213 with engine 177
with code M005 (Vehicles with 4MATIC/all-wheel drive)
AR27.10-P-0505MNE
    Transmission 725.06 in model 217, 222 with engine 177
except code M005 (Vehicles with 4MATIC/all-wheel drive)
AR27.10-P-0505MNM
    Transmission 725.09 in model 217, 222 with engine 177
with code M005 (Vehicles with 4MATIC/all-wheel drive)
AR27.10-P-0505MNN
    Transmission 725.09 in model 232 AR27.10-P-0505SLY
    Transmission 725.0 in model 290 with engine 177
with code M005 (Vehicles with 4MATIC/all-wheel drive)
Transmission 725.163 in model 290 with engine 177.8
AR27.10-P-0505MNI