11 51 000 Removing and installing/replacing coolant pump (N55) (X6 xDrive 35i, X6 sDrive 35i)
Only perform this work after engine has cooled down.
Attention!
If a coolant pump that has already been operated is reused, It must be filled with coolant after removal.
Water mixture ratio: Coolant =1:1
Protect plug connections against coolant and dirt contamination.
Recycling:
Catch and dispose of drained coolant in a suitable container.
Observe country-specific waste disposal regulations.
Installation note:
- All screws, nuts, bolts and hose clamps removed during the repair must be replaced.
- Retaining elements on chassis and suspension and steering parts must be replaced.
Attention!
Risk of damage:
Non-visible damage to the coolant pump .
Forcibly removing, installing or dropping the coolant pump down will damage it.
Remove and install the coolant pump without damaging it and without applying external force.
Avoid impacts/knocks to the coolant pump (e.g. by tools, falling down, hard contact with base).
Necessarily replace the coolant pump after it falls or receives hard blows.
Installation note:
- Top up coolant.
- Bring the engine to operating temperature and then check the coolant level and top up if necessary.
Necessary preliminary work:
- Follow diagnosis instructions.
- Remove underbody protection
- Remove FAN COWL .
- Drain COOLANT .
- Remove COOLANT THERMOSTAT .
Disconnect plug connection (1) from coolant pump.
Release hose clamp (1 and 2).
Installation note:
Note Installation hose clamps.
Tightening torque 11 53 5AZ .
Follow assembly instructions:
Installation note:
Hose clamps (1) must be installed in the center of the marked area (see graphic).
Release screws (1).
Tightening torque 11 51 2AZ .
Installation note:
Replace screws .
Installation note:
If the electric coolant pump is reused, it must be rotated one turn due to the breakaway torque at the impellers.
Assemble engine.
BLEEDING INSTRUCTIONS must be observed without fail .