ALTROZ SERVICE MANUAL

1.2L REVOTRON ENGINE 68 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