BMW 7 Series: Water Pump With Drive
Removing And Installing/Renewing Coolant Pump (N63)
WARNING: Risk of scalding! Only perform this work after engine has cooled down.
Recycling
Catch and dispose of drained coolant in a suitable collecting vessel.
Observe country-specific waste disposal regulations.
IMPORTANT: If a coolant pump which has already been operated is reused, it must be filled immediately after being removed with coolant (mixture ratio 1:1/water: coolant).
Necessary preliminary work
- Drain COOLANT
- Remove intercooler EXPANSION TANK
- Remove alternator drive belt.
IMPORTANT: Risk of damage!
Coolant emerges when the coolant hoses are detached from the coolant thermostat and coolant pump.
Cover surrounding components and plug connections with suitable apparatus
NOTE: For purposes of clarity, the graphic shows the auxiliary water pump removed.
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Fig. 438: Identifying Plug Connections
Remove plug connections (2 and 3).
Installation note:
Plug connections (2 and 3) must snap audibly into place! Unlock snap fastener on coolant hose (1).
Detach coolant hose (1) and lay to one side.
Release screw (4).
Tightening torque 11 51 3AZ.
Detach pipe (3) and lay to one side.
Installation note:
Replace sealing ring
Unlock quick-release coupling on coolant hose (5).
Detach coolant hose (5) and lay to one side.
Unfasten screws (2).
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Fig. 439: Identifying Pipe, Screws And Coolant Hose
Tightening torque 11 51 1AZ.
Remove coolant pump (1) in upward direction with a tilting motion.
Installation note:
Replace gasket
If reusing the coolant pump:
If a coolant pump is reused, it must be mechanically rotated once (breakaway torque at pump impellers).
One coolant pump rotation will be sufficient.
If replacing the coolant pump:
Release screws on coolant thermostat.
Tightening torque 11 53 1AZ.
Remove coolant thermostat.
Installation note:
Replace sealing ring
Assemble engine.
Top up COOLANT.
BLEEDING INSTRUCTIONS must be observed without fail.
READ NEXT:
Thermostat And Connections
REMOVING AND INSTALLING/REPLACING COOLANT THERMOSTAT (N63)
WARNING: Risk of scalding!
Only perform this work after engine has cooled down.
Recycling
Catch and dispose of drained coolant in a suitable
Check BMW Diagnosis System For Excess Pressure And Vacuum (N63)
IMPORTANT: Excess pressure and vacuum lines are identified by the size of
the connection
fittings and color-coded red and blue and must not be mixed up with each
other.
Build up pressure with Blue c
SEE MORE:
Removing And Installing/Replacing Front Speaker Carrier (Instrument Panel)
Notes
Unclip trim (1) from latching mechanisms with special tool 00 9 325.
Fig. 31: Removing Trim From Latch Mechanisms Using Special Tool (00 9 325)
Release screws (1).
Remove speaker carrier (2) and disconnect associated plug connection.
Fig. 32: Identifying Screws And Speaker Carrier
Installat
Instructions For Adapting Adjustment Unit For Reversing Camera
(CORGHI KDS Quick-Action Clamp)
The following operations should only be carried out when using the tool kit
for calibrating the reversing camera
for the first time.
NOTE: The operation is described for the left-hand side; proceed in the
same way for
the right-hand side.
Remove support plate (1) from spindle (2).
Replace spindle
