CAMSHAFT INSPECTION
id011000501500
1. Set the No.1 and No.5 journals of the camshaft on V-blocks.
2. Measure the camshaft runout using the dial gauge.
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• If it exceeds the maximum specification, replace the camshaft.
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Maximum camshaft runout
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0.030 mm {0.0012 in}
3. Measure the cam height using the micrometer as shown in the figure.
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• If it is less than the minimum specification, replace the camshaft.
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Standard cam height [SKYACTIV-G 1.3]
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IN: 41.54 mm {1.636 in}
EX: 40.34 mm {1.588 in}
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Standard cam height [SKYACTIV-G 1.5 (with electric variable valve timing)]
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IN: 41.54 mm {1.636 in}
EX: 40.35 mm {1.589 in}
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Standard cam height [SKYACTIV-G 1.5 (without electric variable valve timing)]
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IN: 41.54 mm {1.636 in}
EX: 40.34 mm {1.588 in}
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Standard cam height [SKYACTIV-G 2.0]
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IN: 41.57 mm {1.637 in}
EX: 40.37 mm {1.589 in}
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Standard cam height [SKYACTIV-G 2.5]
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IN: 42.34 mm {1.667 in}
EX: 40.34 mm {1.589 in}
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Minimum cam height [SKYACTIV-G 1.3]
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IN: 41.47 mm {1.633 in}
EX: 40.27 mm {1.586 in}
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Minimum cam height [SKYACTIV-G 1.5 (with electric variable valve timing)]
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IN: 41.47 mm {1.633 in}
EX: 40.28 mm {1.586 in}
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Minimum cam height [SKYACTIV-G 1.5 (without electric variable valve timing)]
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IN: 41.47 mm {1.633 in}
EX: 40.27 mm {1.586 in}
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Minimum cam height [SKYACTIV-G 2.0]
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IN: 41.50 mm {1.634 in}
EX: 40.30 mm {1.587 in}
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Minimum cam height [SKYACTIV-G 2.5]
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IN: 42.27 mm {1.664 in}
EX: 40.30 mm {1.587 in}
4. Measure the journal diameter using the micrometer. Measurement positions total four and are in the X and Y directions, at two points (A and B) as shown in the figure.
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• If it is less than the minimum specification, replace the camshaft.
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Standard camshaft journal diameter
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24.96—24.98 mm {0.9827—0.9834 in}
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Minimum camshaft journal diameter
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24.93 mm {0.9815 in}
5. Measure the camshaft journal oil clearance using the following procedure:
- (1) Clean the camshaft journal and the journal receptacle part.
- (2) Put the camshaft on the cylinder head with the rocker arm detached.
- (3) Cut the plastigauge to the same length as the journal width and position it parallel to the camshaft.
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- (4) Install the camshaft caps. (See CYLINDER HEAD ASSEMBLY (II).)
- (5) Remove the camshaft caps. (See CYLINDER HEAD DISASSEMBLY (I).)
- (6) Measure the camshaft journal oil clearance.
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• If it exceeds the maximum specification, replace the cylinder head.
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Standard camshaft journal oil clearance
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0.035—0.080 mm {0.0014—0.0031 in}
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Maximum camshaft journal oil clearance
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0.090 mm {0.0035 in}
6. Measure the camshaft end play using a dial gauge.
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• If it exceeds the maximum specification, replace the cylinder head or camshaft.
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Standard camshaft end play
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0.07—0.22 mm {0.003—0.008 in}
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Maximum camshaft end play
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0.98 mm {0.039 in}