QX56 V8-5.6L (VK56DE) (2004)
Water Pump: Service and Repair
Removal and Installation
CAUTION:
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When removing water pump, be careful not to get engine coolant on drive belt.
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Water pump cannot be disassembled and should be replaced as a unit.
REMOVAL
1. Drain engine coolant so that no engine coolant comes out from water pump fitting hole.
CAUTION: Perform when the engine is cold.
2. Remove following parts.
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Engine front undercover.
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Air duct (inlet); refer to "REMOVAL".
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Generator, water pump and A/C compressor belt; refer to SC-28, "REMOVAL", CO-12, "REMOVAL", EM-12, "Removal".
CAUTION: Leave auto tensioner pulley in its fixed position when removing drive belt.
3. Remove water pump pulley.
4. Remove water pump.
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Engine coolant will leak from the cylinder block, so have a receptacle ready.
CAUTION: Handle water pump vane so that it does not contact any other parts.
INSPECTION AFTER REMOVAL
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Visually check that there is no significant dirt or rusting on the water pump body and vane.
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Make sure there is no looseness in the vane shaft, and that it turns smoothly when rotated by hand.
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If there are any unusual concerns, replace the water pump assembly.
INSTALLATION
Installation is in the reverse order of removal.