64 12 570 Replacing auxiliary water pump for independent/auxiliary heater

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Special tools required:

13 3 010

See FUEL SYSTEM - SPECIAL TOOLS .

WARNING: Scalding hazard!
Work on the cooling system may only be carried out when it has cooled down.

Recycling

Coolant emerges when coolant lines are detached. Have a suitable collecting container ready.

Catch and dispose of emerging coolant.

Observe country-specific waste-disposal regulations.

Necessary preliminary tasks:

Remove LEFT OR RIGHT UNDERBODY PANELLING

NOTE: Disconnect coolant hoses

Disconnect coolant hoses (1) with special tool 13 3 010 and release associated hose clamps.

Release screw (2).

Detach auxiliary water pump (3) and disconnect associated plug connection.

Tightening torque 64 12 3AZ , see 64 12 INDEPENDENT HEATING .

Fig 1: Identifying Auxiliary Water Pump And Plug Connection

G04792617

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Fill and vent cooling system and check for leaks , see 17 00 008 DRAINING AND ADDING COOLANT IN RADIATOR (N62TU, N63) , and 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATER LEAKS (N63) , or 17 00 005 DRAINING AND ADDING COOLANT (N54) , 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATER LEAKS (N54) .