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Removing and installing viscous fan clutch - AR20.40-P-5660AO

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ENGINE 120 in MODEL 129, 140 

Fig 1: Identifying Viscous Fan Clutch Remove/Install Components
G04679145Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
REMOVINGINSTALLING Removing, installing     
1 Remove fan shroud (5)   AR20.40-P-6800AO 
2 Fit on counterholder (04) SPECIAL TOOL Fig 2
3 Use screwdriver and attached torque wrench to unscrew bolt (1) SPECIAL TOOL Fig 3
    SPECIAL TOOL
IMPORTANTInstallation  : tighten bolt (1) with hexagon insert and torque wrench, unscrew.
Fig 3
    SPECIAL TOOL Torque wrench Fig 4
    SPECIAL TOOL Hexagon insert Fig 5
    TORQUE SPECIFICATION *BA20.40-P-1002-01A 
    TORQUE SPECIFICATION *BA20.40-P-1003-01A 
4 Detach viscous fan clutch (3) from fan (2) TORQUE SPECIFICATION *BA20.40-P-1001-01A 
    Pay attention to general notes on viscous fan clutch ↓  
    see AH20.40-P-0001-01AO 
5 Install in the reverse order    
TORQUE SPECIFICATION FAN, FAN CLUTCH

Number Designation Engine 120
BA20.40-P-1001-01A Bolt of fan to viscous clutch Nm 10
BA20.40-P-1002-01A Tightening bolt of viscous fan clutch to bearing body with approved special tool Nm 45
BA20.40-P-1003-01A Tightening bolt of viscous fan clutch to bearing body with screwdriver and torque wrench Nm 41
Fig 2: Identifying Open-End Wrench (120 589 02 01 00)
G04679146Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 3: Identifying Screwdriver (120 589 14 07 00)
G04679147Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 4: Identifying Torque Wrench (001 589 72 21 00)
G04679148Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 5: Identifying Screwdriver Bit (103 589 01 09 00)
G04679149Courtesy of MERCEDES-BENZ OF NORTH AMERICA.