92 / 1906
ENGINE
56
K. Camshaft :
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 color.
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 47 HRC.
Camshaft journal and bearing bore dimensions :
Cam shaft bearing bore
diameter in cylinder head
(mm)
Cam shaft bearing journal
diameter in cylinder head
(mm)
Standard
24 H 7
24f7
Standard 1
24.1H7
24.1f7
Bore dia. In 1
st
and 3
rd
cap for front oil
seal (mm)
Ø 32 F 7
Maximum permissible run out of
camshaft bearing journal (mm)
0.02
Maximum permissible axial play of the
camshaft in installed condition (mm)
0.18 - 0.25
Run out of oil seal mating diameter
0.02