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• MODEL SELECTION INDEX
• VT SERIES I - COMMODORE, CALAIS SERVICE INFORMATION
• SECTION 6A1-1 - ENGINE MECHANICAL - V6 ENGINE
  • 1. GENERAL DESCRIPTION
    • 1.1 ENGINE SERIAL NUMBER
    • 1.2 ENGINE CONSTRUCTION
      • CYLINDER BLOCK
      • CYLINDER HEADS
      • CRANKSHAFT
      • PISTONS AND CONNECTING RODS
      • CAMSHAFT AND DRIVE
      • BALANCE SHAFT
      • INLET MANIFOLD
      • VALVE TRAIN
      • HYDRAULIC VALVE LIFTER OPERATION
      • EXHAUST MANIFOLDS
      • OIL PUMP
      • ACCESSORY DRIVE
      • POWERTRAIN MOUNTING
      • MANUAL TRANSMISSION
      • AUTOMATIC TRANSMISSION
    • 1.3 LUBRICATION
    • 1.4 SERVICE NOTES
      • CLEANLINESS AND CARE
  • 2. MINOR SERVICE OPERATIONS
    • 2.1 COMPRESSION CHECK
      • INTERPRETATION OF COMPRESSION READINGS
    • 2.2 CHECKING ENGINE OIL PRESSURE
    • 2.3 OIL FILTER
      • REPLACE
    • 2.4 OIL LEVEL CHECK
    • 2.5 OIL FILTER ADAPTOR
      • REMOVE
      • REINSTALL
    • 2.6 DRIVE BELT
      • TENSION CHECK
      • INSPECT
      • REMOVE
      • REINSTALL
    • 2.7 DRIVE BELT TENSIONER ASSEMBLY
      • REMOVE
      • REINSTALL
    • 2.8 UPPER INLET MANIFOLD
      • REMOVE
      • REINSTALL
    • 2.9 LOWER INLET MANIFOLD
      • REMOVE
      • REINSTALL
    • 2.10 EXHAUST MANIFOLDS
      • REMOVE
      • REINSTALL
    • 2.11 ROCKER COVERS AND/OR SEALS
      • REMOVE
      • REINSTALL
    • 2.12 ROCKER ARMS AND PUSHRODS
      • REMOVE
      • CLEAN AND INSPECT
      • REINSTALL
    • 2.13 VALVE STEM OIL SEALS
      • REPLACE
    • 2.14 VALVE LIFTERS
      • REMOVE
      • DISASSEMBLE
      • CLEAN AND INSPECT
      • REASSEMBLE
      • TESTING LIFTER LEAK DOWN RATE
      • REINSTALL
    • 2.15 CYLINDER HEADS
      • REMOVE
      • INSPECT
      • REINSTALL
    • 2.16 CYLINDER HEAD RECONDITIONING
      • DISASSEMBLE
      • CLEAN
      • CYLINDER HEAD INSPECTION
      • VALVE GUIDES
      • VALVE SEATS
      • VALVE SPRINGS
      • VALVES
      • MEASURING VALVE STEM HEIGHT
      • VALVE SPRING INSTALLED HEIGHT
      • REASSEMBLE
    • 2.17 CRANKSHAFT BALANCER
      • REMOVE
      • REINSTALL
    • 2.18 CRANKSHAFT FRONT SEAL
      • REPLACE
    • 2.19 FRONT COVER AND GASKET
      • REMOVE
      • REINSTALL
    • 2.20 OIL PUMP
      • REMOVE
      • DISASSEMBLE
      • INSPECT
      • REASSEMBLE AND REINSTALL
    • 2.21 TIMING CHAIN, TENSIONER, SPROCKETS AND BALANCE SHAFT GEARS
      • REMOVE
      • INSPECT
      • REINSTALL
    • 2.22 CAMSHAFT
      • MEASURING CAMSHAFT LOBE LIFT
      • REMOVE
      • INSPECT
      • CAMSHAFT BEARING SERVICE
      • REINSTALL
    • 2.23 ENGINE MOUNTS
      • FRONT MOUNTS
      • REAR MOUNT
    • 2.24 BEAMING BRACE
      • REMOVE
      • REINSTALL
    • 2.25 IDLER ASSEMBLY
      • REMOVE
      • REINSTALL
  • 3. MAJOR SERVICE OPERATIONS
    • 3.1 ENGINE ASSEMBLY
      • REMOVE
      • DISASSEMBLE
      • REASSEMBLE
      • REINSTALL
    • 3.2 OIL PAN AND SEAL
      • REMOVE
      • INSPECT
      • REINSTALL
    • 3.3 OIL PUMP SUCTION PIPE AND SCREEN
      • REMOVE
      • REINSTALL
    • 3.4 FLYWHEEL/FLEXPLATE
      • REMOVE
      • INSPECT
      • REINSTALL
    • 3.5 RING GEAR
      • REPLACE
    • 3.6 SPIGOT BEARING
      • REPLACE
    • 3.7 MAIN AND CONNECTING ROD BEARINGS
      • MAIN BEARINGS - INSPECT
      • MAIN BEARINGS - REPLACE
      • CONNECTING ROD BEARINGS - INSPECT AND REPLACE
    • 3.8 CAMSHAFT BEARINGS
      • REPLACE
    • 3.9 BALANCE SHAFT AND BEARINGS
      • REMOVE
      • REINSTALL
    • 3.10 PISTON AND CONNECTING ROD ASSEMBLY
      • REMOVE
      • DISASSEMBLE
      • INSPECT
      • REASSEMBLE AND REINSTALL
    • 3.11 PISTON RINGS
      • INSTALL
    • 3.12 CRANKSHAFT
      • REMOVE
      • INSPECT
      • REINSTALL
    • 3.13 REAR MAIN OIL SEAL
      • REPLACE
    • 3.14 REAR MAIN OIL SEAL HOUSING
      • REMOVE
      • REINSTALL
    • 3.15 CYLINDER BLOCK
      • INSPECT
      • CYLINDER RECONDITIONING AND PISTON FITTING
  • 4. ENGINE MECHANICAL DIAGNOSIS
    • 4.1 EXCESSIVE OIL LOSS
      • OIL LEAK DIAGNOSIS
      • FINDING THE LEAK
      • POWDER METHOD
      • BLACK LIGHT AND DYE METHOD
      • REPAIRING THE LEAK
      • GASKETS-INSPECT
      • SEALS-INSPECT
    • 4.2 LOW OIL PRESSURE
    • 4.3 ENGINE NOISE DIAGNOSIS
      • MAIN BEARING NOISE
      • CONNECTING ROD BEARING NOISE
      • TIMING CHAIN AND SPROCKETS
      • PISTON NOISES
      • VALVE TRAIN
    • 4.4 ENGINE KNOCK DIAGNOSIS
      • KNOCKS WHEN ENGINE COLD AND CONTINUES FOR TWO OR THREE MINUTES
      • HEAVY KNOCK HOT WITH TORQUE APPLIED
      • LIGHT KNOCK HOT
      • KNOCKS ON INITIAL START-UP BUT ONLY LASTS A FEW SECONDS
      • KNOCKS AT IDLE, ENGINE HOT
      • VALVE TRAIN NOISE
    • 4.5 HYDRAULIC VALVE LIFTERS
  • 5. SPECIFICATIONS
  • 6. TORQUE WRENCH SPECIFICATIONS
  • 7. SPECIAL TOOLS