48 / 948
KRYOTEC ENGINE
39
H. CAMSHAFT
Intake Camshaft
Exhaust Camshaft
Cylinder Head Cover
1.
Check cam shaft run out at 2nd journal by
supporting it on V-block at 1st and 3rd journal.
2.
Check cam shaft journal dimensions. Record
the readings.
3.
Carry out visual inspection of cam shaft for:
Overheating of journals, this is indicated by
bluish/ brown colour.
Deep scoring marks on journals and cam
lobes
Cracks, which should be checked on a
magnetic crack detector.
4.
Check hardness of cam shaft journals and cam
lobes, it should be 45 HRC.
Camshaft journal & bearing bore dimensions
CAMSHAFTS
Measure
Value
Nominal intake camshaft lift (mm)
8.5
Nominal exhaust camshaft lift (mm)
8
Diameter First pin timing shaft (mm)
43.600 - 43.615
Diameter Second pin timing shaft (mm)
43.400 - 43.415
Diameter Third pin timing shaft (mm)
43.200 - 43.215
Diameter Fourth pin timing shaft (mm)
43.000 - 43.015
Diameter Fifth pin timing shaft (mm)
30.000 - 30.015
Diameter First timing shaft support (mm)
43.646 - 43.671
Diameter Second timing shaft support (mm)
43.446 - 43.471
Diameter Third timing shaft support (mm)
43.246 - 43.271
Diameter Fourth timing shaft support (mm)
43.046 - 43.071
Diameter Fifth timing shaft support (mm)
30.045 - 30.070