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1.2L REVOTRON ENGINE
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H. Camshafts (Intake & Exhaust)
1. Visually inspect the camshaft journals for
signs of overheating and score marks.
2. Visually inspect the camshaft lobes for signs
of excessive wear or score marks.
3. Place camshaft journal 1 and 4 in 'V blocks'
and check camshaft journal runout on
journals 2, and 3 using a dial indicator. The
maximum journal runout is 0.020 mm
4. Measure the diameter of each of the camshaft
journals. Refer the table for acceptable
journals diameters.
5. Use a bore gauge to measure each of the I.D.
of camshaft bearings. Refer the table for
acceptable bearing diameters.
6. Use a magnetic crack detector to check the
camshaft for cracks.
7. Check the camshaft lobes for proper
hardness. The Rockwell Hardness should be
a minimum of 40 HRC at 3mm (chill) on the
'C' scale.
Camshaft Dimensions (1.2L NG TC REVOTRON)
Maximum permissible runout of camshaft bearing journal
0.020 mm
Maximum permissible axial play of camshaft (installed)
0.1-0.3 mm
Journal Dimensions
From Front of engine
Camshaft Bearing Bore I.D.
Camshaft Bearing Journal O.D.
Intake
1
30.040 - 30.061 mm
29.979 – 30.000 mm
2
22.040 - 22.061 mm
21.979 – 20.000 mm
3
22.040 - 22.061 mm
21.979 – 20.000 mm
4
22.040 - 22.061 mm
21.979 – 20.000 mm
Exhaust
1
30.040 - 30.061 mm
29.979 – 30.000 mm
2
22.040 - 22.061 mm
21.979 – 22.000 mm
3
22.040 - 22.061 mm
21.979 – 22.000 mm
4
22.040 - 22.061 mm
21.979 – 22.000 mm