Camshaft Cleaning and Inspection. Chevrolet Joy 2008

For 1990-2009 cars

Measure the height (1) of the cam using a micrometer, and replace the camshaft when the measured valve is less than the specified limit.

Specifications

• | The height of the cam standard, interior is 35.156 mm (1.3841 in).

• | The height of the cam limit, interior is 35.124 mm (1.3828 in).

• | The height of the cam standard, exterior is 34.814 mm (1.3706 in).

• | The height of the cam limit, exterior is 34.789 mm (1.3696 in).

### Measuring the Camshaft Bend

Measure the bending of the camshaft using a dial gage, and replace it when the measured value is over the specified limit.

Specification
The bending limit is 0.03 mm (0.0012 in).

Using a bore gage, measure the inner diameter of the cylinder head journal at the 4 places--The clearance of journal is measured by the difference between the outer diameter of camshaft journal and inner diameter of cylinder head journal part (1).

Replace the camshaft or cylinder head, if necessary of which limit is over the specified limit.

Specifications

• | The journal clearance standard is 0.05-0.091 mm (0.0020-0.0036 in).

• | The journal clearance limit is 0.15 mm (0.0059 in).

• | The outer diameter camshaft journal standard (a) is 43.425-43.450 mm (1.7096-1.7106 in).

• | The inner diameter cylinder head journal part standard (a) is 43.500-43.516 mm (1.7126-1.7132 in).

• | The outer diameter camshaft journal limit (a) is 43.625 mm (1.7077 in).

• | The inner diameter cylinder head journal part limit (a) is 43.525 mm (1.7136 in).

• | The outer diameter camshaft journal standard (b) is 43.625-43.650 mm (1.7175-1.7185 in).

• | The inner diameter cylinder head journal part standard (b) is 43.700-43.716 mm (1.7205-1.7211 in).

• | The outer diameter camshaft journal limit (b) is 43.575 mm (1.7156 in).

• | The inner diameter cylinder head journal part limit (b) is 43.725 mm (1.7215 in).

• | The outer diameter camshaft journal standard (c) is 43.825-43.850 mm (1.7254-1.7265 in).

• | The inner diameter cylinder head journal part standard (c) is 43.900-43.916 mm (1.7283-1.7290 in).

• | The outer diameter camshaft journal limit (c) is 43.775 mm (1.7234 in).

• | The inner diameter cylinder head journal part limit (c) is 43.925 mm (1.7293 in).

• | The outer diameter camshaft journal standard (d) is 440.25-44.050 mm (1.7333-1.7343 in).

• | The inner diameter cylinder head journal part standard (d) is 44.100-44.116 mm (1.7362-1.7369 in).

• | The outer diameter camshaft journal limit (d) is 43.975 mm (1.7313 in).

• | The inner diameter cylinder head journal part limit (d) is 44.125 mm (1.7372 in).

### Abrasion of the Camshaft Journal

Measure the outer diameter of each journal at the 4 different places (1).