Buick Regal Owners & Service Manuals
Buick Regal 2018-2024 Service Manual / Engine / Engine Cooling / Repair Instructions / Water Pump Pulley Replacement (3.6L LGX)

Buick Regal: Water Pump Pulley Replacement (3.6L LGX)

Engine Cooling

Preliminary Procedure

Drive Belt Replacement.

  1. Water Pump Pulley Bolt [4x]

CAUTION: Refer to Fastener Caution.

Tighten 10 N.m (89 lb in)

  1. Water Pump Pulley

Procedure

1. Install the EN-46104 Water Pump Pulley Holding Tool onto the water pump pulley mounting holes.

2. Remove the water pump pulley bolts.

3. Remove the EN-46104 Water Pump Pulley Holding Tool from the water pump pulley.

Special Tools

EN-46104 Water Pump Pulley Holding Tool

For equivalent regional tools, refer to Special Tools.

WATER PUMP REPLACEMENT (3.6L LGX)

Removal Procedure

1. Drain the cooling system.

2. Drive Belt Tensioner - Remove.

3. Drive Belt Idler Pulley - Remove.

4. Water Pump Pulley - Remove.

5.

Engine Cooling

Engine Front Cover Bolt (1) - Remove [9x].

6. Water Pump Bolt (2) - Remove [5x].

7.

Engine Cooling

Water Pump (1) - Remove.

8. Water Pump Gasket (2) - Remove and DISCARD.

9. Carefully clean the water pump sealing surfaces.

Installation Procedure

1.

Engine Cooling

Water Pump Gasket (2) - Install NEW.

2. Water Pump (1) - Install.

3.

Engine Cooling

Water Pump Bolt (2) - Install and hand tighten - Hand tighten [5x].

4. Engine Front Cover Bolt (1) - Install and hand tighten [9x].

Engine Cooling
Fig. 1: Water Pump Bolts Tightening Sequence

5.

CAUTION: Refer to Fastener Caution.

Tighten the water pump bolts in the sequence shown to 15 N.m (11 lb ft).

6. Water Pump Pulley - Install.

7. Drive Belt Idler Pulley - Install.

8. Drive Belt Tensioner - Install.

9. Fill the cooling system.

10. Start the engine and check for leaks.

WATER PUMP REPLACEMENT (2.0L LTG)

Removal Procedure

1. Drain the cooling system.

2. Drive Belt - Remove.

3. Turbocharger - Remove.

4.

Engine Cooling

Wiring Harness Clip (4) - Remove.

5. Wiring Harness (1) - Position aside.

6. Clamp (2) - Loosen.

7. Radiator Outlet Hose (3) - Disconnect.

8.

Engine Cooling

Thermostat Bypass Pipe Bolt (1) - Remove [2x].

9.

Engine Cooling

Water Pump Bolt (2) - Remove [3x].

10. Water Pump (3) - Remove.

11. Water Pump Seal (1) - Remove and DISCARD.

12.

Engine Cooling

Thermostat Bypass Pipe Gasket (1) - Remove and DISCARD.

Installation Procedure

1.

Engine Cooling

Thermostat Bypass Pipe Gasket (1) - Install NEW.

2.

Engine Cooling

Water Pump Seal (1) - Install NEW.

3. Water Pump (3) - Install.

CAUTION: Refer to: Fastener Caution

4. Water Pump Bolt (2) - Install and hand tighten [3x].

5.

Engine Cooling

Thermostat Bypass Pipe Bolt (1) - Install and hand tighten [2x].

6.

Engine Cooling

Water Pump Bolt (2) - Tighten [3x] 25N.m (18 lb ft).

7.

Engine Cooling

Thermostat Bypass Pipe Bolt (1) - Tighten [2x] 10N.m (89 lb in).

8.

Engine Cooling

Radiator Outlet Hose (3) - Connect.

9. Clamp (2) - Install.

10. Wiring Harness (1) - Reposition.

11. Wiring Harness Clip (4) - Install.

12. Turbocharger - Install.

13. Drive Belt - Install.

14. Fill the cooling system.

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