Buick Regal: Cylinder Head Assemble
Special Tools
- EN-50717 Valve Spring Compressor
- EN-9666 Valve Spring Tester
- EN-43963 Valve Spring Compressor (off car)
For equivalent regional tools, refer to Special Tools.
1.
CAUTION: Refer to Component Fastener Tightening Caution.
CAUTION: In order to avoid damage, install the spark plugs after the
cylinder head has
been installed on the engine.
Install NEW cylinder head plugs. Coat the plugs with sealer. Refer to
Adhesives, Fluids, Lubricants, and
Sealers.
2. Install the water jacket hole plugs (1) in the top of the cylinder head.
Tighten the plugs to 50 N.m (37 lb ft).
3.
Install the oil gallery plug (1) in the rear of the cylinder head. Tighten
the plug to 40 N.m (30 lb ft).
4. Inspect the valve springs for the following conditions:
- Expanded height
- Unparallel spring ends
- Spring tension using EN-9666 tester
- Any distorted springs should be replaced
5.
Inspect the valves and the valve seats. Refer to Valve and Seat Grinding.
6. Lubricate the valves. Refer to Adhesives, Fluids, Lubricants, and Sealers.
7. Install the valves (1, 2). Replace the valves, if required.
8.
NOTE: Always use NEW valve stem oil seals when assembling the cylinder
head.
Install the NEW valve seals (1). Fully seat the seals on the valve guides.
9.
Install the springs (1).
10.
WARNING: Compressed valve springs have high tension against the valve
spring
compressor. Valve springs that are not properly compressed by or released
from the valve spring compressor can be ejected from the valve spring
compressor with intense force. Use care when compressing or releasing the
valve spring with the valve spring compressor and when removing or
installing the valve stem keys. Failing to use care may cause personal injury.
CAUTION: Do not compress the valve springs to less than 24.0 mm (0.943
in). Contact
between the valve spring retainer and the valve stem oil seal can cause
potential valve stem oil seal damage.
Install the retainers and keys using the following procedure:
- Install the retainer (2).
- Using the EN-50717 compressor and the EN-43963 adapter, compress the
valve spring.
- Install the valve keys (1).
- Slowly release the compression from the valve/spring assembly.
- Inspect for proper valve key seating.
11.
Lubricate the camshaft position sensor O-ring with clean engine oil.
CAUTION: Refer to Fastener Caution.
12. Install the exhaust camshaft position sensor (2) and bolt (1). Tighten
the bolt to 10 N.m (89 lb in).
13.
Lubricate the camshaft position sensor O-ring with clean engine oil.
14. Install the intake camshaft position sensor (2) and bolt (1). Tighten the
bolt to 10 N.m (89 lb in).
BALANCER SHAFT WITH OIL PUMP DISASSEMBLE
- Oil Pump Suction Pipe Bolt
- Oil Pump Screen Assembly with Suction Pipe
- Oil Pump Screen Gasket
NOTE:
Discard the gasket.
- Oil Pump Assembly Bolt
- Oil Pump Assembly
- Oil Pump Cover
- Oil Pump Locating Pin
- Balancer Shaft Module
BALANCER SHAFT WITH OIL PUMP CLEANING AND INSPECTION
Preliminary Procedures
1. Completely inspect the balancer with oil pump shaft assembly and
components.
2. Clean all mating surfaces.
3. Inspect all threaded holes for damage.
4. Inspect the oil pump screen assembly.
- Oil Pump Assembly
- Oil Pump Cover
- Balancer Shaft Module
- Oil Pump Locating Pin
- Oil Pump Screen Assembly with Suction Pipe
BALANCER SHAFT WITH OIL PUMP ASSEMBLE
- Balancer Shaft Module
- Oil Pump Locating Pin
- Oil Pump Cover
- Oil Pump Assembly
- Oil Pump Assembly Bolt
CAUTION: Refer to Fastener Caution.
Tighten 10 N.m (89 lb in)
- Oil Pump Screen Gasket
NOTE:
Use NEW gasket.
- Oil Pump Screen Assembly with Suction Pipe
- Oil Pump Suction Pipe Bolt
Tighten 10 N.m (89 lb in)
CAMSHAFT COVER AND COMPRESSOR AIR INTAKE TURBOCHARGER CLEANING AND
INSPECTION
Positive Crankcase Ventilation System Overview
Preliminary Procedure
The tamper-proof positive crankcase ventilation system includes components
that may be replaced if
necessary. The system may include an outlet duct connected to the end of the
Positive Crankcase Ventilation
Tube. If any component is suspect, refer to the inspection procedures and
individual replacement procedures
before attempting to disassemble the PCV system. Be careful when moving the
assembled components with
tamper-proof fittings to avoid stress on the connections.
- Camshaft Cover
NOTE: In the event that the camshaft cover requires replacing, the PCV
hose at the air outlet duct and turbocharger will be removed by cutting
and/or prying at the connection. The air outlet duct and turbocharger must
remain intact in order to reinstall these components.
Procedure
- Thoroughly clean the camshaft cover and mating surfaces. Inspect
each component, Orings, and fasteners, and replace as necessary.
- Ensure proper use of room temperature vulcanizing (RTV) sealant. Use
of Room Temperature Vulcanizing (RTV) and Anaerobic Sealant
- Refer to Camshaft Cover Replacement if the camshaft cover does not
pass inspection.
- Positive Crankcase Ventilation Tube
NOTE: All PCV valves are tamper-proof and cannot be serviced.
Procedure
Inspect the PCV connection fittings and tubes. Replace the Positive
Crankcase Ventilation Tube if suspect.
NOTE: The PCV fitting is tamper-proof and cannot be serviced. A new
PCV tube and valve are included with a new turbocharger assembly.
NOTE: On earlier designs of this system the fastener at the PCV fitting on
the turbocharger was not tamper-proof. To aid in disassembly or removal,
this fastener can be removed if it is not tamper-proof.
Procedure
Completely inspect the turbocharger and all other engine components that
may cause similar conditions before replacing the turbocharger.
- Positive Crankcase Ventilation Tube
NOTE: All PCV valves and fittings are tamper-proof and cannot be
serviced.
Procedure
Inspect the PCV connection fittings and tubes. Replace the Positive
Crankcase Ventilation Tube if suspect.
NOTE: The air cleaner outlet duct is equipped with a tamper proof
connection that should NOT be removed unless the PCV tube or air cleaner
outlet duct is being replaced. Loosening the air cleaner outlet duct clamps
will allow the duct to be disconnected from the air cleaner assembly and
turbocharger for repositioning without removing the tamper proof connection.
Procedure
Inspect the duct and hose, or the connection if the duct is not attached
to the hose. Replace any components that are suspect.
Camshaft Cover - Top
Preliminary Procedure
1. Thoroughly clean the camshaft cover and mating surfaces. Inspect each
component, O-rings, and
fasteners, and replace as necessary.
2. Ensure proper use of room temperature vulcanizing (RTV) sealant.
- Engine Coolant Air Bleed Hose
- Engine Coolant Air Bleed Pipe
- Engine Coolant Air Bleed Pipe O-Ring
- Camshaft Cover
- Camshaft Position Actuator Solenoid Valve - Intake
- Camshaft Cover Plug
CAUTION: Refer to Fastener Caution.
Tighten 35 N.m (26 lb ft)
- Vacuum Pump Seal
Special Tools
DT 45866 Input Shaft Seal Installer
Equivalent regional tools: Special Tools.
- Ignition Coil
- Camshaft Position Actuator Solenoid Valve - Exhaust
Camshaft Cover - Bottom
Preliminary Procedure
Inspect each component, O-rings, and fasteners, and replace as necessary.
- Camshaft Cover Locating Pin [2x]
- Positive Crankcase Ventilation Valve
- Spark Plug Shield Seal
Special Tools
EN 34115 Sprocket Bearing Installer
Equivalent regional tools: Special Tools.
Turbocharger and Components Cleaning and Inspection
- Turbocharger
Procedure
- Clean all mating surfaces.
- Inspect all threaded holes for
damage.
NOTE: PCV fluids and combustion product buildup are
common and not a sign of failure.
- Inspect the compressor and turbine
blades for bent or broken conditions, and foreign material.
NOTE: Do not replace the turbocharger if cracks are
found on the turbocharger inlet flange partition wall. Replacement
should only be performed if external leaks are present or a section is
loose or missing.
- Inspect the turbocharger compressor
inlet, compressor outlet, turbine inlet, and turbine outlet surfaces for
damage. Replace the turbocharger if damage is found.
NOTE: A new PCV tube and fitting are included with a
new turbocharger assembly.
- Replace the turbocharger if damage
is found.
- Turbocharger Bypass Valve Solenoid
Procedure
Inspect the bypass valve solenoid
for damage. Replace if necessary.
- Turbocharger Wastegate Regulator
Solenoid Valve
NOTE: Do not disassemble solenoid valve from bracket.
Procedure
Inspect the solenoid valve and
bracket for damage. Replace if necessary.
- Turbocharger Wastegate Regulator
Solenoid Valve Hose [3x]
Procedure
Inspect the turbocharger wastegate
regulator solenoid hoses for damage. Replace the hoses if necessary.
- Turbocharger Wastegate Actuator
Procedure
- Inspect the turbocharger wastegate
actuator.
- Inspect the wastegate actuator rod
for damage or tampering.
- Replace the wastegate actuator if
damage is found.
- Turbocharger Oil Feed Pipe
Procedure
Inspect the pipe. Replace if
necessary.
- Turbocharger Coolant Return Pipe
Procedure
Inspect the pipe. Replace if
necessary.
- Turbocharger Coolant Feed Pipe
Procedure
Inspect the pipe. Replace if
necessary.
- Turbocharger Oil Return Pipe
Procedure
Inspect the pipe. Replace if
necessary.
READ NEXT:
Special Tools
EN-47909 Injector Bore and Sleeve Cleaning Kit
EN-49245 Fuel Injector Seal Install/Sizer
EN-50791 Fuel Injector Nozzle Installer
EN-51105 Fuel Injector Seal Installer
For equivalen
Preliminary Procedure
1. Ensure proper use of room temperature
vulcanizing (RTV) sealant.
2. Thoroughly clean the oil pans and mating surfaces. Inspect each component,
O-rings, and fasteners, and
1.
Install the piston oil nozzle assemblies (2), if equipped.
CAUTION: Refer to Fastener Caution.
2. Install the piston oil nozzle bolts (1) and tighten to 10 N.m (89 lb in).
3.
Lubricate the crank
SEE MORE:
Special Tools
J-42572 Drive Shaft Seal Clamp Pliers
Disassembly Procedure
1. Front Wheel Drive Half Shaft - Remove
Front Wheel Drive Half Shaft Replacement - Left Side
Front Wheel Drive Half Shaft Replacement - Right Side (AWD)Front
Wheel Drive Half Shaft
Replacement - Right Side (FWD)
2. Pla
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
DTC Descriptors
D