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

ENGINE 120 in MODEL 129, 140 

Fig 1: Identifying Viscous Fan Clutch Remove/Install Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Removing, installing
1	Remove fan shroud (5)		AR20.40-P-6800AO
2	Fit on counterholder (04)		Fig 2
3	Use screwdriver and attached torque wrench to unscrew bolt (1)		Fig 3
		Installation  : tighten bolt (1) with hexagon insert and torque wrench, unscrew.	Fig 3
		Torque wrench	Fig 4
		Hexagon insert	Fig 5
			*BA20.40-P-1002-01A
			*BA20.40-P-1003-01A
4	Detach viscous fan clutch (3) from fan (2)		*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

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)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 3: Identifying Screwdriver (120 589 14 07 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 4: Identifying Torque Wrench (001 589 72 21 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 5: Identifying Screwdriver Bit (103 589 01 09 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.