46 ENGINE2.2LDICOR Fig. 98 l If necessary, straighten connecting rod in cold condition. Since a slight clearance exists between connect ing rod bol ts and corresponding connecting rod bearing cap holes, it is possible that connecting rod bearing cap once removed may be installed off center, by which dimension of connecting rod big end parent bore will be different in different directions. If there is a difference noticed in connecting rod big end parent bore dimension, connecting rod bearing cap can be centralized by lightly tapping it with mallet in required direction after slightly loosening connecting rod bearing cap mounting nuts. l If one or more connecting rods are to be replaced, ensure that difference in weight of connecting rod in one engine is within permissible limits. l Install new pair of connecting rod bearing shell according to size of crank pin journal diameter, making sure that securing lugs of bearing shells are properly seated in grooves of connecting rod and its bearing cap. NOTE Lower and upper bearings are different and to be fitted properly. l Install connecting rod bearing cap with bearing shell on connecting rod. Tighten connecting rod bearing cap mtg. nuts to specified torque (Fig.100) Fig. 99 Fig. 100 l Check connecting rod big end parent bore dimension. (Fig. 99) l 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. Connecting rod bearing cap mating surface may be slightly faced. Parent bore should then be finished on a connecting rod boring machine. l ENSURETHATCONNECTINGRODBIGENDAND SMALLENDAXESAREPARALLELTOEACHOTHER WITHINSPECIFIEDLIMITS.CENTRETOCENTRE DISTANCEBETWEENCONNECTINGRODSMALLEND ANDBIGENDISMAINTAINEDWITHINSPECIFIED LIMITS.
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