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

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

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

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

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

ENGINE 113.982 in MODELS 463.243 /246

Shown on Engine 112

Fig 1: Identifying Viscous Fan Clutch Remove/Install Components - Shown On Engine 112

Courtesy of MERCEDES-BENZ USA

	Remove/Install
1	Fit counterholder (1) on bolts of belt pulley (2), counterhold	Belt pulley of coolant pump
			Figure
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