Service Manual (KLZ1000C) — page 158 of 762

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4-12 COOLING SYSTEM
Water Pump
Water Pump Inspection
• Check    the drainage outlet passage [A] at the bottom of
  the water pump housing for coolant leaks.
• Ifcheck
      a coolant leak or ooze is found, start the engine and
          if the coolant leaks continuously.
○When coolant does not continuously leak, it is normal.
    If the mechanical seal is damaged, the coolant continu-
    ously leaks through the drainage outlet passage. Replace
    the mechanical seal unit.
    If the oil seal is damaged, engine oil leaks through the
    drainage outlet passage. Replace the oil seal.
Water Pump Impeller Disassembly/Assembly
• Remove     the water pump impeller (see Water Pump Re-
  moval(4-10)).
• The  sealing seat [A] and rubber seal [B] may be removed
  easily by hand.
• Apply   water or coolant around the surfaces of the rubber
  seal and sealing seat.
• Install the rubber seal and sealing seat into the impeller by
  pressing them by hand until the seat stops at the bottom
    of the hole.
•   Install the water pump impeller (see Water Pump Instal-
    lation(4-10)).
Water Pump Impeller Inspection
• Remove     the water pump cover (see Water Pump Re-
  moval(4-10)).
• Visually inspect the water pump impeller [A].
  If the surface is corroded or if the blades are damaged,
    replace the water pump impeller.

Water Pump Housing Disassembly
                          NOTICE
    Do not damage the hole wall of the water pump
    housing.

• Insert a bar [A] into the pump housing [B], and hammer
  evenly around the circumference of the mechanical seal
    bottom [C].