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Cadillac STS 2006 Repair Instructions
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Cadillac STS 2006 Repair Instructions

3.6l eng base, camshaft replacement
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Download this manual See also: Owner's Manual
10/25/2014
ENGINE MECHANICAL - 3.6L (1 OF 5)
ON-VEHICLE REPAIR INSTRUCTIONS > CAMSHAFT REPLACEMENT - LEFT SIDE >
TOOLS REQUIRED
EN 46108 Timing Chain Retention Tool. See Special Tools .
ON-VEHICLE REPAIR INSTRUCTIONS > CAMSHAFT REPLACEMENT - LEFT SIDE >
REMOVAL PROCEDURE
1. Remove the upper intake manifold with the lower intake manifold. Refer to Lower Intake Manifold
Replacement .
2. Remove the left bank camshaft cover. Refer to Camshaft Cover Replacement - Left Side .
3. Remove the camshaft sensors. Refer to Camshaft Position Sensor Replacement - Bank 2 (Left
Side) Exhaust and Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake .
4. Remove the camshaft position actuator solenoid. Refer to Camshaft Position Actuator Solenoid
Valve Solenoid Replacement - Bank 2 (Left Side) Intake .
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2006 Cadillac STS 3.6L Eng Base
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Summary of Contents for Cadillac STS 2006

  • Page 1 10/25/2014 Printer Friendly View 2006 Cadillac STS 3.6L Eng Base ENGINE MECHANICAL - 3.6L (1 OF 5) ON-VEHICLE REPAIR INSTRUCTIONS > CAMSHAFT REPLACEMENT - LEFT SIDE > TOOLS REQUIRED EN 46108 Timing Chain Retention Tool. See Special Tools . ON-VEHICLE REPAIR INSTRUCTIONS > CAMSHAFT REPLACEMENT - LEFT SIDE >...
  • Page 2 10/25/2014 Printer Friendly View Fig 1: Camshaft Flats Parallel With Camshaft Cover Rail Courtesy of GENERAL MOTORS CORP. IMPORTANT: Rotate the crankshaft balancer in a clockwise rotation ONLY. 5. Rotate the crankshaft using the crankshaft balancer bolt until the camshafts are in a neutral (low tension) position.
  • Page 3 10/25/2014 Printer Friendly View Fig 2: Preventing Camshaft/Engine Rotation Using Open-End Wrench Courtesy of GENERAL MOTORS CORP. NOTE: Refer to Torque Reaction Against Timing Drive Chain Notice . IMPORTANT: 1. Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation.
  • Page 4 10/25/2014 Printer Friendly View IMPORTANT: Ensure that the tips of the EN 46108 are fully engaged into the timing chain (3 and 4). See Special Tools . Fig 3: Identifying EN 46108 Courtesy of GENERAL MOTORS CORP. 7. Install the EN 46108 (1 and 2) in order to retain the timing chain. See Special Tools . Firmly tighten the EN 46108 nuts.
  • Page 5 10/25/2014 Printer Friendly View Fig 4: Locating Left Secondary Camshaft Drive Chain Timing Marks Courtesy of GENERAL MOTORS CORP. IMPORTANT: Ensure that the camshaft timing chain and the camshaft position actuators are marked for proper assembly. 8. Mark the timing chain and the respective locations on the camshaft position actuators (1-4). 9.
  • Page 6 10/25/2014 Printer Friendly View Fig 1: Locating Left Secondary Camshaft Drive Chain Timing Marks Courtesy of GENERAL MOTORS CORP. IMPORTANT: 1. Ensure that the marks on the camshaft position actuator and the timing chain (1-4) are aligned. 2. DO NOT tighten the camshaft position actuator bolt at this time.
  • Page 7 10/25/2014 Printer Friendly View Fig 2: Preventing Camshaft/Engine Rotation Using Open-End Wrench Courtesy of GENERAL MOTORS CORP. NOTE: Refer to Torque Reaction Against Timing Drive Chain Notice . IMPORTANT: Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation.
  • Page 8 10/25/2014 Printer Friendly View Exhaust and Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake . 7. Install the camshaft cover. Refer to Camshaft Cover Replacement - Left Side . 8. Install the upper intake manifold with the lower intake manifold. Refer to Lower Intake Manifold Replacement .
  • Page 9 10/25/2014 Printer Friendly View Fig 1: Identifying Camshaft Neutral (Low Tension) Position Courtesy of GENERAL MOTORS CORP. IMPORTANT: Rotate the crankshaft balancer in a clockwise rotation ONLY. 5. Rotate the crankshaft using the crankshaft balancer bolt until the camshafts are in a neutral (low tension) position.
  • Page 10 10/25/2014 Printer Friendly View Fig 2: Preventing Camshaft/Engine Rotation Using Open-End Wrench Courtesy of GENERAL MOTORS CORP. NOTE: Refer to Torque Reaction Against Timing Drive Chain Notice . IMPORTANT: 1. Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation.
  • Page 11 10/25/2014 Printer Friendly View IMPORTANT: Ensure that the tips of the EN 46108 are fully engaged into the timing chain (3 and 4). See Special Tools . Fig 3: Identifying EN 46108 Courtesy of GENERAL MOTORS CORP. 7. Install the EN 46108 (1 and 2) in order to retain the timing chain. See Special Tools . Firmly tighten the EN 46108 nuts.
  • Page 12 10/25/2014 Printer Friendly View Fig 4: Identifying Timing Chain Marks And Their Respective Locations On Gears, Sprockets And Actuators Courtesy of GENERAL MOTORS CORP. IMPORTANT: Ensure that the camshaft timing chain and the camshaft position actuators are marked for proper assembly. 8.
  • Page 13 10/25/2014 Printer Friendly View Fig 1: Identifying Timing Chain Marks And Their Respective Locations On Gears, Sprockets And Actuators Courtesy of GENERAL MOTORS CORP. IMPORTANT: 1. Ensure that the marks on the camshaft position actuators and the timing chain (15-18) are aligned. 2.
  • Page 14 10/25/2014 Printer Friendly View Fig 2: Preventing Camshaft/Engine Rotation Using Open-End Wrench Courtesy of GENERAL MOTORS CORP. NOTE: Refer to Torque Reaction Against Timing Drive Chain Notice . IMPORTANT: Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation.
  • Page 15 10/25/2014 Printer Friendly View Side) Exhaust and Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake . 7. Install the camshaft cover. Refer to Camshaft Cover Replacement - Right Side . 8. Install the upper intake manifold with the lower intake manifold. Refer to Lower Intake Manifold Replacement .
  • Page 16 10/25/2014 Printer Friendly View Fig 1: Identifying Valve Rocker Arms Courtesy of GENERAL MOTORS CORP. 1. Install the rocker arms. Refer to Valve Rocker Arm Installation - Left Side . 2. Install the applicable camshaft(s). Refer to Camshaft Replacement - Left Side . ON-VEHICLE REPAIR INSTRUCTIONS >...
  • Page 17 10/25/2014 Printer Friendly View Fig 1: View Of Valve Rocker Arm Courtesy of GENERAL MOTORS CORP. 2. Remove the rocker arms. Refer to Valve Rocker Arm Removal - Right Side . 3. Clean and inspect the camshaft(s) and the rocker arm(s). Repair or replace as necessary. Refer to Camshaft Cleaning and Inspection and Valve Lifters Cleaning and Inspection .
  • Page 18 10/25/2014 Printer Friendly View Fig 1: View Of Valve Rocker Arm Courtesy of GENERAL MOTORS CORP. 1. Install the rocker arms. 2. Install the applicable camshaft(s). Refer to Valve Rocker Arm Installation - Right Side . ON-VEHICLE REPAIR INSTRUCTIONS > VALVE LIFTER REPLACEMENT - LEFT SIDE > REMOVAL PROCEDURE 1.
  • Page 19 10/25/2014 Printer Friendly View Fig 1: Identifying Stationary Hydraulic Lash Adjuster (SHLA) Courtesy of GENERAL MOTORS CORP. 3. Remove the lifters. Refer to Valve Lifter Removal - Left Side . 4. Clean and inspect the camshaft(s), rocker arm(s) and lifter(s). Repair or replace as necessary. Refer to Camshaft Cleaning and Inspection and Valve Lifters Cleaning and Inspection .
  • Page 20 10/25/2014 Printer Friendly View Fig 1: Identifying Stationary Hydraulic Lash Adjuster (SHLA) Courtesy of GENERAL MOTORS CORP. 1. Install the lifters. Refer to Valve Lifter Installation - Left Side . 2. Install the rocker arms. Refer to Valve Rocker Arm Installation - Left Side . 3.
  • Page 21 10/25/2014 Printer Friendly View Fig 1: View Of SHLAs Courtesy of GENERAL MOTORS CORP. 3. Remove the lifters. Refer to Valve Lifter Removal - Left Side . 4. Clean and inspect the camshaft(s) and the rocker arm(s). Repair or replace as necessary. Refer to Camshaft Cleaning and Inspection and Valve Lifters Cleaning and Inspection .
  • Page 22 10/25/2014 Printer Friendly View Fig 1: View Of SHLAs Courtesy of GENERAL MOTORS CORP. 1. Install the lifters. Refer to Valve Lifter Installation - Right Side . 2. Install the rocker arms. Refer to Valve Rocker Arm Installation - Right Side . 3.
  • Page 23 10/25/2014 Printer Friendly View J 39313 Spark Plug Port Adapter. See Special Tools . ON-VEHICLE REPAIR INSTRUCTIONS > VALVE STEM OIL SEAL AND VALVE SPRING REPLACEMENT - LEFT SIDE > REMOVAL PROCEDURE 1. Remove the starter motor. Refer to Starter Motor Replacement (LY7) or Starter Motor Replacement (LH2) or Starter Motor Replacement (LC3) .
  • Page 24 10/25/2014 Printer Friendly View 3. Remove the camshafts and rocker arms. Refer to Camshaft Replacement - Left Side . 4. Remove the spark plug from the applicable cylinder. Refer to Spark Plug Replacement . 5. Install the J 39313 to the applicable cylinder. See Special Tools . 6.
  • Page 25 10/25/2014 Printer Friendly View care may cause personal injury. NOTE: Do not compress the valve springs 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.
  • Page 26 10/25/2014 Printer Friendly View Fig 4: View Of Valve Spring Courtesy of GENERAL MOTORS CORP. 12. Remove the valve spring. http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=true&ymms=false&className= 26/51...
  • Page 27 10/25/2014 Printer Friendly View Fig 5: Removing/Installing Valve Stem Seal Courtesy of GENERAL MOTORS CORP. 13. Use the EN 46116 (1) in order to remove the valve stem seal (2). See Special Tools . ON-VEHICLE REPAIR INSTRUCTIONS > VALVE STEM OIL SEAL AND VALVE SPRING REPLACEMENT - LEFT SIDE >...
  • Page 28 10/25/2014 Printer Friendly View Fig 1: Removing/Installing Valve Stem Seal Courtesy of GENERAL MOTORS CORP. 1. Use the EN 46116 (1) in order to install the valve stem seal (2). See Special Tools . http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=true&ymms=false&className= 28/51...
  • Page 29 10/25/2014 Printer Friendly View Fig 2: View Of Valve Spring Courtesy of GENERAL MOTORS CORP. 2. Install the valve spring. 3. Install the valve spring retainer. http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=true&ymms=false&className= 29/51...
  • Page 30 10/25/2014 Printer Friendly View Fig 3: View Of Installed Valve Spring Compressor Tool Courtesy of GENERAL MOTORS CORP. 4. Install the EN 46110 above the applicable valve spring as shown. See Special Tools . Tighten the EN 46110 valve spring compressor nut (2). See Special Tools . http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=true&ymms=false&className= 30/51...
  • Page 31 10/25/2014 Printer Friendly View Fig 4: Installing Valve Keepers With EN 46117 Courtesy of GENERAL MOTORS CORP. IMPORTANT: Ensure proper directional placement of valve keepers in the EN 46117 . See Special Tools . The valve keepers must be installed with the tapered end towards the valve stem seal.
  • Page 32 10/25/2014 Printer Friendly View Fig 5: View Of Valve Spring Keepers Courtesy of GENERAL MOTORS CORP. 6. Install the valve spring keepers. 7. Remove the EN 46110 . See Special Tools . 8. Disconnect the J 39313 from the compressed air source. See Special Tools . 9.

  • Page 33: Replacement - Right Side

    10/25/2014 Printer Friendly View REPLACEMENT - RIGHT SIDE Tools Required EN 46106 Flywheel Holding Tool. See Special Tools . EN 46110 On-Vehicle Valve Spring Compressor. See Special Tools . EN 46116 Valve Stem Seal Remover/Installer. See Special Tools . EN 46117 Valve Stem Key Remover/Installer. See Special Tools . J 39313 Spark Plug Port Adapter.
  • Page 34 10/25/2014 Printer Friendly View IMPORTANT: If the EN 46106 is not installed, the crankshaft may rotate. See Special Tools . If the crankshaft rotates, disassembly and reassembly of the entire camshaft timing system may be required. 2. Install the EN 46106 in order to prevent crankshaft rotation. See Special Tools . 3.
  • Page 35 10/25/2014 Printer Friendly View CAUTION: 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.
  • Page 36 10/25/2014 Printer Friendly View Fig 3: View Of Valve Spring Keepers Courtesy of GENERAL MOTORS CORP. 9. Using the EN 46117 remove the valve keepers. See Special Tools . 10. Loosen the EN 46110 valve spring compressor nut. See Special Tools . 11.
  • Page 37 10/25/2014 Printer Friendly View Fig 4: View Of Valve Spring Courtesy of GENERAL MOTORS CORP. 12. Remove the valve springs. http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=true&ymms=false&className= 37/51...
  • Page 38 10/25/2014 Printer Friendly View Fig 5: Removing/Installing Valve Stem Seal Courtesy of GENERAL MOTORS CORP. 13. Use the EN 46116 (1) in order to remove the valve stem seal (2). See Special Tools . ON-VEHICLE REPAIR INSTRUCTIONS > VALVE STEM OIL SEAL AND VALVE SPRING REPLACEMENT - RIGHT SIDE >...
  • Page 39 10/25/2014 Printer Friendly View Fig 1: Removing/Installing Valve Stem Seal Courtesy of GENERAL MOTORS CORP. 1. Use the EN 46116 (1) in order to install the valve stem seals (2). See Special Tools . http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=true&ymms=false&className= 39/51...
  • Page 40 10/25/2014 Printer Friendly View Fig 2: View Of Valve Spring Courtesy of GENERAL MOTORS CORP. 2. Install the valve spring. 3. Install the valve spring retainer. http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=true&ymms=false&className= 40/51...
  • Page 41 10/25/2014 Printer Friendly View Fig 3: View Of Installed Valve Spring Compressor Tool Courtesy of GENERAL MOTORS CORP. 4. Install the EN 46110 above the applicable valve spring as shown. See Special Tools . Tighten the EN 46110 valve spring compressor nut (2). See Special Tools . http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=true&ymms=false&className= 41/51...
  • Page 42 10/25/2014 Printer Friendly View Fig 4: Installing Valve Keepers With EN 46117 Courtesy of GENERAL MOTORS CORP. IMPORTANT: Ensure proper directional placement of valve keepers in the EN 46117 . See Special Tools . The valve keepers must be installed with the tapered end towards the valve stem seal.
  • Page 43 10/25/2014 Printer Friendly View Fig 5: View Of Valve Spring Keepers Courtesy of GENERAL MOTORS CORP. 6. Install the valve spring keepers. 7. Remove the EN 46110 . See Special Tools . 8. Disconnect the J 39313 from the compressed air source. See Special Tools . 9.

  • Page 44: Removal Procedure

    10/25/2014 Printer Friendly View REMOVAL PROCEDURE 1. Remove the left bank secondary timing chain. Refer to Secondary Camshaft Drive Chain Replacement - Left Side . 2. Remove the oil level indicator. Refer to Oil Level Indicator and Tube Replacement . Fig 1: View Of Coolant Temperature Sensor And Electrical Connector Courtesy of GENERAL MOTORS CORP.
  • Page 45 10/25/2014 Printer Friendly View Fig 2: View Of Left Cylinder Head Wiring Harness Ground Bolt Courtesy of GENERAL MOTORS CORP. 4. Remove the wiring harness ground from the cylinder head. 5. Disconnect the wiring harness electrical connector located at the side of the cylinder head. 6.
  • Page 46 10/25/2014 Printer Friendly View Fig 3: View Of Left Cylinder Head Courtesy of GENERAL MOTORS CORP. 13. Remove the cylinder head with the exhaust manifold. Refer to Cylinder Head Removal - Right Side . http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=true&ymms=false&className= 46/51...
  • Page 47 10/25/2014 Printer Friendly View Fig 4: View Of Left Cylinder Head Gasket Courtesy of GENERAL MOTORS CORP. 14. Remove and discard the cylinder head gasket. 15. Clean and inspect the cylinder head and the engine block sealing surfaces. Refer to Cylinder Head Cleaning and Inspection and Engine Block Cleaning and Inspection .
  • Page 48 10/25/2014 Printer Friendly View Fig 1: View Of Left Cylinder Head Gasket Courtesy of GENERAL MOTORS CORP. 2. Install a NEW cylinder head gasket. http://www2.prodemand.com/Print/Index?content=tabs&module=true&tab=true&terms=true&ymms=false&className= 48/51...
  • Page 49 10/25/2014 Printer Friendly View Fig 2: View Of Left Cylinder Head Courtesy of GENERAL MOTORS CORP. 3. Carefully install the cylinder head with the exhaust manifold to the engine. Refer to Cylinder Head Installation - Left Side . 4. Install the oil filter adapter upper bolt. Refer to Oil Filter Adapter Installation . 5.
  • Page 50 10/25/2014 Printer Friendly View 11. Disconnect the wiring harness electrical connector located at the side of the cylinder head. Fig 3: View Of Left Cylinder Head Wiring Harness Ground Bolt Courtesy of GENERAL MOTORS CORP. NOTE: Refer to Fastener Notice . 12.
  • Page 51 10/25/2014 Printer Friendly View Fig 4: View Of Coolant Temperature Sensor And Electrical Connector Courtesy of GENERAL MOTORS CORP. 13. Install the coolant temperature sensor electrical connector heat shield. 14. Install the oil level indicator. Refer to Oil Level Indicator and Tube Replacement . 15.