SAFARI

486 PL ENGINE

Measure main bearing parent bore dimension.

Fig. 89

If main bearing parent bore is slightly more than

maximum permissible limits, it is possible to reclaim

crank case provided the wear is confined only to

main bearing cap.

Install new pairs of main bearing shells according

to size of crank shaft main bearing journal diameter,

ensure the proper fitment of securing lugs.

Install main bearing caps with bearing shells in their

respective position on crank case.

Tighten main bearing cap mounting bolts to specified

torque.

Measure main bearing bore.

Measure pre-tension of main bearing shell with a

feeler gauge after loosening main bearing cap

mounting bolt on opposite side of bearing shell lug.

(This is to be done on a flat surface)

Select new pair of thrust washer according to crank

shaft 4th main journal width.

Cylinder Bore

Clean cylinder bores thoroughly.

Check cylinder bore dimensions, taper & ovality.

Fig. 90 & 91

Fig. 91

Fig. 90

Fig. 89