SAFARI

486 PL ENGINE

If taper and ovality is found to exceed specified limit

or bore dimension is not as specified,

Machine bore to next over size

Criteria to choose the bore size :

Bore diameter of worn out cylinder bore.

Size of next piston available.

Recommended clearance between piston and

bore.

Required bore diameter.

NOTE :

0.050 to 0.070 mm stock should be left for honing.

CAUTION :

Maintain the parallality of cylinder bore axis and

perpendicularity to axis of crank shaft

Clean block & all passages thoroughly

Check water jackets and oil passages for leakage

at air pressure 5 bar, under water.

If block is to be stored apply grease to machined

surfaces.

CYLINDER HEAD

Mating Surface

Using a straight edge and feeler gauge, check

cylinder head mating surface with crank case.

Fig. 92 & 93

If unevenness exceeds permissible limits, replace

cylinder head.

CAUTION :

CYLINDER head top and bottom surface

re-machining in service is NOT permitted.

Fig. 93

Fig. 92