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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System >> Repair Instructions >> Water Pump Replacement (LUK) >> Installation Procedure

Installation Procedure

    Fig 1: Water Pump, Water Pump Cover, Rear Cover Fasteners And O-Ring Seal
    GM2637669Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  1. If replacing the water pump cover (1), install a new O-ring (2) to the water pump (3) and tighten the fasteners (4) to 25 N.m (18 lb ft).
    2. Fig 2: Water Pump, Guide Pin And Fasteners
    GM2637706Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    A guide pin can be created to aid in water pump alignment. Use a M6m x 6mm x 50.8mm stud (2 in). Thread the pin into the water pump sprocket.

  2. Using a guide pin (2), align the pin with the water pump holding tool.
  3. Position the water pump (1) against the engine block and hand tighten the water pump fasteners (3).
    4. Fig 3: Water Pump Sprocket To Water Pump Fasteners And Guide Pin
    GM2637754Courtesy of GENERAL MOTORS COMPANY
  4. Install 2 water pump sprocket to water pump fasteners (1). After the fasteners are snug, remove the guide pin (2) and install the 3rd fastener (3) and tighten to 10 N.m (89 lb in).
    5. Fig 4: Water Pump Bolts
    GM2442866Courtesy of GENERAL MOTORS COMPANY
  5. Install the water pump fasteners (1) at the front of the engine. Hand tighten at this time.
  6. Tighten the water pump fasteners at the front and rear of the water pump to 25 N.m (18 lb ft).
    7. Fig 5: Water Pump Cover Fasteners
    GM2637660Courtesy of GENERAL MOTORS COMPANY
  7. Remove the water pump cover fasteners (1) from the engine front cover and water pump holding tool.
    8. Fig 6: Water Pump Holding Tool And Fasteners
    GM2637656Courtesy of GENERAL MOTORS COMPANY
  8. Remove the EN-43651  water pump holding tool (1) from the water pump sprocket.
    9. Fig 7: Water Pump Cover, Fasteners And Gasket
    GM2637652Courtesy of GENERAL MOTORS COMPANY
  9. Install the water pump access plate (2) gasket (1) and fasteners (3) and tighten to 10 N.m (89 lb in).
  10. If equipped, Install the coolant heater.
  11. Install the engine coolant thermostat housing. Refer to Engine Coolant Thermostat Housing Replacement (LEA or LUK) .
  12. Install the catalytic converter. Refer to Catalytic Converter Replacement (LUK, LEA) .
  13. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement (LUK) .
  14. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  15. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  16. Refill the coolant system. Refer to Cooling System Draining and Filling (GE 47716) .
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