Remove/install viscous fan clutch - AR20.40-P-5660C

ENGINE 112 in MODEL 210, 202, 163.154/157, 129

ENGINE 113 in MODEL 210, 208, 202, 163.172, 129

ENGINE 112.945 in MODEL 463.209/232/233/244/245/250

ENGINE 113.962 in MODEL 463.206/240/241/247/248/249/254

ENGINE 113.982 in MODEL 463.243/246

Shown on Engine 112

Fig 1: Identifying Viscous Fan Clutch Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/Install
1	Fit counterholder (1) on bolts of belt pulley (2), counterhold	Belt pulley of coolant pump	Fig 3
2	Unscrew union nut at viscous fan (3)	Right-hand thread. Installation: Use torque wrench with open-end wrench bit.	*BA20.40-P-1002-01B
			Fig 2
3	Unbolt fan at viscous clutch	Installation: The installation position of the fan is preset through cast-on ribs at fan ring.	*BA20.40-P-1001-01B
4	Install in the reverse order

FAN, FAN CLUTCH

Number	Designation		Engine 112.910/911/912/913/914/915/916/917/920/921/922/923/940/941/942/943/944/945/946/947/949/951/953/954/955/960/961/970/972/973/975/976	Engine 113
BA20.40-P-1001-01B	Fan to viscous clutch	Nm	10	10
BA20.40-P-1002-01B	Viscous clutch to bearing body	Nm	45	45

Fig 2: Identifying Open-End Wrench Bit (113 589 00 01 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Counterholder (113 589 00 40 00)

Courtesy of MERCEDES-BENZ USA