Chevrolet Sonic manuals
 

Chevrolet Sonic Repair Manual: Crankshaft and Bearing Cleaning and Inspection

Chevrolet Sonic Repair Manual / Powertrain / Engine / Engine Block / Cylinder Block / Crankshaft and Bearing Cleaning and Inspection

Special Tools

For equivalent regional tools, refer to Special Tools.

Crankshaft End Play, Check


    Note:

    Crankshaft attached with crankshaft bearing caps.

  1. Install the GE-571-B gauge  (1).
    1. Install in the holder on the front of the engine block.
    2. Place the dial gauge plunger against the crankshaft and adjust.
  2. Measure the longitudinal play of the crankshaft.
    1. Move the crankshaft in the longitudinal direction.
    2. Permissible crankshaft end play: 0.100?E.202 mm (0.0039?E.0080 in)
  3. Remove the GE-571-B gauge .
Crankshaft Out-of-Round, Check


    Note:

    Crankshaft removed.

  1. Insert the crankshaft in the engine block.
  2. Install the GE-571-B gauge .
    1. Attach to the bracket on the engine block.
    2. Place the dial gauge plunger against the crankshaft bearing journal and adjust.
  3. Check the rotational play of the crankshaft.
    1. Turn the crankshaft evenly.
    2. Maximum permissible rotational play: 0.03 mm (0.001 in).
  4. Remove the GE-571-B gauge  (1).
Check Crankshaft Bearing Clearance (With Plastigage)


    Note:

    • Crankshaft removed.
    • Do not rotate the crankshaft.
  1. Lay on plastigage.

    Lay out plastigage (flexible plastic thread) around the entire width of the con-rod bearing journal (1).

    2. Caution:

    Refer to Fastener Caution.

    Note:

    • Note the correct tightening sequence.
    • The bolts can be reused for checking the crankshaft bearing play.
  2. Install the crankshaft bearing cap. Tighten the 2 crankshaft bearing cap bolts in 3 passes. Use the EN-45059 sensor kit :
    1. First pass to  50 Y (37 lb ft)

    2. Second pass to  45°

    3. Third pass to  15°

  3. Remove the 2 crankshaft bearing cap bolts.

    4. Note:

    When reading the value, do not confuse millimeters and inches on the measuring scale (1).

  4. Measure the crankshaft bearing play.
    1. Compare the width of the flattened plastic thread (arrow) to the measuring scale.
    2. Permissible crankshaft bearing play: 0.005?E.059 mm (0.0002?E.0023 in).
Check Crankshaft Bearing Clearance (With Micrometer Gauge Internal Measuring Device)

    Note:

    • Note the correct tightening sequence.
    • The bolts can be reused for checking the crankshaft bearing play.
  1. Install the crankshaft bearing cap with the crankshaft bearing clips to the cylinder block.

    Tighten the 2 crankshaft bearing cap bolts in 3 passes. Use the EN-45059 sensor kit :

    1. First pass to  50 Y (37 lb ft)

    2. Second pass to  45°

    3. Third pass to  15°



  2. Install the inner plunger and calibrate with the micrometer gauge (1).

  3. Measure the crankshaft bearing diameter at 3 points.
  • Measure at points A, B and C with the internal measuring device.
  • Calculate the average crankshaft bearing diameter.
  • Formula: A + B + C /3.
Measure the crankshaft bearing journal diameter at 2 points.
  • Measure the crankshaft bearing journal diameter at 2 points.

    Measure at points I and II with the micrometer gauge.

  • Calculate the average crankshaft bearing journal diameter.

    Formula: I + II/2.

  • Determine the crankshaft bearing play.

    Calculation formula: average crankshaft bearing diameter minus average crankshaft bearing journal diameter.

  • Nominal-Actual comparison.

    Permissible crankshaft bearing play: 0.005?E.059 mm (0.0002?E.0023 in).

    • Crankshaft Position System Variation Learn
    Note: The crankshaft position sensor system variation learn procedure is required when the following service procedures have been performed, regardless of whether DTC P0315 is set: ...

    Crankshaft and Bearing Installation
    Special Tools EN-45059 Torque Angle Sensor Kit For equivalent regional tools, refer to Special Tools Note: Inspect the installation position. Install the crankshaft bearing cl ...

    Other materials:

    Stationary Window Waterleak Repair
    Warning: If any water enters the vehicle interior up to the level of the carpet or higher and soaks the carpet, the sensing and diagnostic module (SDM) and the SDM harness connector may need to be replaced. The SDM could be activated when powered, which could cause deployment of the air ...

    Steering Linkage Inner Tie Rod Inspection
    Special Tools GE-8001 Dial Indicator Set For equivalent regional tools, refer to Special Tools. Note: This inspection procedure does not supersede local government required inspections that have more stringent requirements. Turn the ignition key to the ON position with the eng ...

    Intake Manifold Cleaning and Inspection
    Clean the intake manifold mating surfaces. Inspect the intake manifold (2) for damage. Inspect the intake manifold for cracks near metallic inserts. Inspect the crankcase ventilation passages in the intake manifold face for blockage. Warning: Wear safety glasses in or ...

    © 2014-2022 Copyright www.csmans.com
     
    0.0088