49 486 PL ENGINE P Check connect ing rod big end parent bore dimensions Fig. 111 If connecting rod big end parent bore is slightly more than maximum permissible limits, it is possible to reclaim connecting rod provided the wear is confined only to connecting rod bearing cap. CAUTION : l Ensure that connecting rod big end and small end axis are parallel to each other within specified limits. l Center to center distance between connecting rod small end and big end is maintained within specified limits. If one or more connecting rods are to be replaced, Ensure that difference in weight of connecting rods is within permissible limits. According to size of crank pin journal diameter, install new pair of connecting rod bearing shell. Fig. 112 Install connecting rod bearing cap with bearing shell on connecting rod and tighten to the specified torque. Fig.113 Measure connecting rod bearing bore. Measure pretension of connecting rod bearing shell with a feeler gauge after loosening connecting rod bearing cap mounting nut on opposite side of bearing shell lug. Fig. 114 Warning : Connecting rod bearing shell should not be bored or scraped, as they are precision finished. Fig. 114 Fig. 113 Fig. 112 Fig. 111
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