11 53 090 Removing and installing/replacing auxiliary water pump for exhaust turbocharger (N63)

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WARNING: Danger of scalding!

Only perform this work after engine has cooled down.

Recycling:

Catch and dispose of drained coolant in a suitable container.

Observe country-specific waste-disposal regulations.

Necessary preliminary tasks:

Remove intercooler expansion tank . See ENGINE RADIATOR .

Unclip coolant hose (1) from holder in direction of arrow.

Release screws (2).

Tightening torque 11 51 4AZ, see 51 71 SEALS AND LOOSE BODY PARTS

Fig 1: Identifying Coolant Hose With Screws

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Risk of damage!

Coolant emerges when the coolant hoses are detached from the supplementary coolant pump.

Cover surrounding components and plug connections with suitable apparatus

Release hose clamps (1 and 2) with a suitable tool.

Disconnect plug connection (not shown).

Fig 2: Identifying Hose Clamps

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Plug connection must snap audibly into place!

Lift out auxiliary coolant pump.

Assemble engine.

Top up coolant . See 17 00 008 DRAINING AND ADDING COOLANT IN RADIATOR (N62TU, N63) .

Venting instructions must be observed without fail . See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATER LEAKS (N63) .