Remove/install coolant pump - AR20.10-P-1271MCU

ENGINE 132.910 in MODEL 451.3/4 

Fig 1: Identifying Coolant Pump Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Drain coolant		AR20.00-P-1142MCU
2	Remove belt pulley (2) for coolant pump (1)		AR20.10-P-1275MCU
3	Remove poly-V belt tensioning device (3)		AR13.25-P-3200MCU
4	Remove poly-V belt for supercharger	On vehicles with code (I01) Air conditioning Plus	AR13.21-P-1202MCU
5	Remove bolt (4) on timing case cover (5) and lay ground line (6) for engine mass to one side
6	Remove bolts (7, 8)	Catch coolant in a suitable vessel.	*BA20.10-P-1007-01J
7	Remove coolant pump (1) from timing case cover (5)	: Replace profiled rubber seal of coolant pump (1).
8	Install in the reverse order

COOLANT PUMP, COOLANT THERMOSTAT

Number	Designation			ENGINE 132.9
BA20.10-P-1007-01J	Bolt, coolant pump to timing case cover	M6	Nm	10
		M8	Nm	23