ENGINE MECHANICAL (K9K ENGINE) 6A2-53
Camshaft and Tappet Inspection
Camshaft
• Check teeth of sprocket for wear or damage.
• Check journals and cam faces for wear or damage.
If any malcondition is found, replace camshaft.
• Using a micrometer, measure cam height “a”. If measured
height is out of specification, replace camshaft.
Cam height “a”
In: 43.985 – 44.045 mm (1.73170 – 1.73405 in.)
Ex: 44.565 – 44.625 mm (1.75453 – 1.75688 in.)
Camshaft Journal Wear
• Check camshaft journals and camshaft housings for pitting,
scratches, wear or damage.
If any malcondition is found, replace camshaft or cylinder
head with housing. Never replace cylinder head without
replacing housings.
• Check clearance between camshaft and camshaft journal
using gauging plastic as follows.
a) Clean housings and camshaft journals.
b) Remove all tappets.
c) Install camshaft to cylinder head.
d) Place a piece of gauging plastic to full width of journal of
camshaft (parallel to camshaft).
NOTE:
Do not rotate camshaft while gauging plastic is installed.
