Buick Regal: Engine Front Cover Replacement

Special Tools

• EN-45059 Angular Meter
• EN-50820 Front Crankshaft Seal Installer
• KM-470 - B Angular Torque Gauge

Equivalent regional tools: Special Tools

Removal Procedure

1. Air Cleaner Assembly - Remove.

2. Camshaft Cover Replacement - Remove.

3. Engine Mount Replacement - Remove.

4. Crankshaft Balancer Replacement - Remove.

5. Drive Belt Tensioner Replacement - Remove.

6.

NOTE: Only bolts 3, 5 and 6 will be replaced with NEW bolts.

Engine Front Cover Bolt (3, 5 and 6) - Remove and DISCARD.

7. Engine Front Cover Bolt (2-7, 9) - Remove.

8. Engine Front Cover (1) - Remove.

9. If replacing the engine front cover, remove and DISCARD the crankshaft front oil seal using an appropriate tool.

Installation Procedure

1.

If removed, Use EN-50820 installer, to install the front crankshaft seal (1) into the engine front cover.

2.

NOTE:

• The engine front cover surface must be free of contamination prior to applying the sealer.
• Install and align the cover within 20 minutes of applying the sealer.
• The cover must be fastened to final torque specification within 60 minutes of applying the sealer.
• Additional sealant is necessary to reduce the possibility of leakage where the cylinder head to engine block interface along the bead path flange on the front cover.

Apply a 5 mm bead of sealer directly in the flange (1) of the engine front cover perimeter mating surface. Also apply a 5 mm bead of sealer directly to the locations indicated (2). Finally, apply a 14 mm dab of sealant at the locations indicated (3).

3.

Install the engine front cover (1).

CAUTION: Refer to Fastener Caution.

CAUTION: This vehicle is equipped with torque-to-yield or single use fasteners. Install a NEW torque-to-yield or single use fastener when installing this component.

Failure to replace the torque-to-yield or single use fastener could cause damage to the vehicle or component.

NOTE: Only bolts 3, 5 and 6 will be replaced with NEW bolts.

4. Install by hand 3 NEW M10 bolts (3, 5, 6) in the engine front cover, as shown.

5. Hand start the remaining engine front cover bolts (2, 4, 7, 8).

Fig. 3: Engine Front Cover Bolts Tightening Sequence

6.

CAUTION: Refer to Fastener Caution.

Tighten the engine front cover bolts in sequence to final torque twice:

Tighten

1. Tighten sequence 1 - 3 bolts a first pass to 15 N.m (11 lb ft).
2. Tighten sequence 1 - 3 bolts a final pass 130 degrees using EN-45059 meter.
3. Tighten sequence 4 - 15 bolts to 25 N.m (18 lb ft).
4. Tighten sequence 16 - 17 bolts to 10 N.m (7 lb ft)
5. Tighten sequence 18 - 19 bolts to 10 N.m (7 lb ft).
6. Tighten sequence 20 bolt to 25 N.m (18 lb ft).

7. Drive Belt Tensioner Replacement - Install.

8. Crankshaft Balancer Replacement - Install.

9. Engine Mount Replacement - Install.

10. Camshaft Cover Replacement - Install.

11. Air Cleaner Assembly - Install.

INTAKE VALVE ROCKER ARM REPLACEMENT

Removal Procedure

1. Remove the camshaft position actuator and camshaft - intake. Refer to Camshaft Position Actuator and Camshaft Replacement - Intake.

2.

NOTE: Keep all of the valve rocker arms and hydraulic lash adjusters in order so that they can be reinstalled in their respective locations.

Remove the intake rocker arm (1).

Installation Procedure

1.

Lubricate the valve tips. Refer to Adhesives, Fluids, Lubricants, and Sealers.

2.

NOTE:

• Used rocker arms must be returned to the original position on the camshaft. If the camshaft is being replaced, the rocker arms actuated by the camshaft must also be replaced.
• Pre-oil roller bearings before installation.

Lubricate the roller bearings with valve rocker arm lubricant. Refer to Adhesives, Fluids, Lubricants, and Sealers.

3. Position the valve rocker arm (1) on the tip of the valve stem and on the lash adjuster and lubricate. Refer to Adhesives, Fluids, Lubricants, and Sealers.

4. Install the camshaft position actuator and camshaft - intake. Refer to Camshaft Position Actuator and Camshaft Replacement - Intake.

EXHAUST VALVE ROCKER ARM REPLACEMENT

Removal Procedure

1. Remove the camshaft position actuator and camshaft - exhaust. Refer to Camshaft Position Actuator and Camshaft Replacement - Exhaust.

2.

NOTE: Keep all of the Valve Rocker Arms and hydraulic lash adjusters in order so that they can be reinstalled in their respective locations.

Remove the exhaust rocker arm (1).

Installation Procedure

1.

Lubricate the valve tips. Refer to Adhesives, Fluids, Lubricants, and Sealers.

2.

NOTE:

• Used rocker arms must be returned to the original position on the camshaft. If the camshaft is being replaced, the rocker arms actuated by the camshaft must also be replaced.
• Pre-oil roller bearings before installation.

Lubricate the roller bearings with valve rocker arm lubricant. Refer to Adhesives, Fluids, Lubricants, and Sealers.

3. Position the valve rocker arm (1) on the tip of the valve stem and on the lash adjuster and lubricate. Refer to Adhesives, Fluids, Lubricants, and Sealers.

4. Install the camshaft position actuator and camshaft - exhaust. Refer to Camshaft Position Actuator and Camshaft Replacement - Exhaust.

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