Ford Escape Manuals

Ford Escape: Engine System - General Information / General Procedures - Piston Protrusion Check

Special Tool(s) / General Equipment

Dial Indicator

Check

  1. Verify that the cylinder block deck surface and the pistons are clean.
  1. The piston protrusion is measured in-line front and rear avoiding raised or etched marking.
  1. NOTE: Use a commercially available deck bridge such as the Proform® 66797 Magnetic Deck Bridge or equivalent.

    • Using the dial indicator and a commercially available deck bridge, position at one of the points on the cylinder block deck surface.
      Use the General Equipment: Dial Indicator
    • Zero the dial indictor on the cylinder block deck surface.
  1. NOTICE: Only rotate the crankshaft clockwise.

    NOTICE: The piston must remain at TDC or an inconsistent reading will result.

    • Position the dial indicator and a commercially available deck bridge, over the piston.
      Use the General Equipment: Dial Indicator
    • Rotate the crankshaft until the piston is at TDC .
      Use the General Equipment: Dial Indicator
    • Record the reading.
    • Move the dial indicator and the commercially available deck bridge, on the cylinder block deck surface at the opposite position.
      Use the General Equipment: Dial Indicator
    • Zero the dial indictor on the cylinder block deck surface.
    • Move the dial indicator and the commercially available deck bridge, onto the piston at the opposite position.
      Use the General Equipment: Dial Indicator
    • Record the reading.
  1. Average the readings and record.
  1. Repeat on the remaining pistons.
  1. Determine the cylinder head gasket thickness.

    General Procedures - Piston Inspection

    Inspection NOTE: Do not use a caustic cleaning solution or a wire brush to clean the pistons or damage can occur. Clean and inspect the (1) ring lands, (2) pin bosses, (3) skirts and the (4) tops of the pistons...

    General Procedures - Piston Ring End Gap

    Special Tool(s) / General Equipment Feeler Gauge Check NOTE: Refer to the appropriate Section 303-01 for the specification. NOTE: Use care when fitting piston rings to avoid possible damage to the piston ring or the cylinder bore...

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