48 486 PL ENGINE P Connecting Rods : Inspect connecting rod small end bush and if necessary remove it. Check for connecting rod small end parent bore dimension. Fig. 109 If necessary machine connecting rod small end parent bore to next over size. CAUTION : The connecting rod big end and small end should be parallel to each other. The parallality should be within specified limits. Install connecting rod bearing caps without bearing shells on the connecting rod. Tighten connecting rod bearing cap mounting nuts to specified torques. Fig. 110 Warning : Ensure that identification numbers for connecting rod and connecting rod bearing cap are matched and notches for bearing shells are on the same side. Check for twist and bend. Use a new piston pin in connecting rod small end bush. Now measure twist and bend of connecting rod with feeler gauge with respect to ver tical face of connecting rod alignment gauge, in vertical and horizontal plane at a distance of 50 mm from line joining centres of connecting rod small end and big end bosses. If required, straighten connecting rod in cold condition. CAUTION : Connect ing rods are NOT to be heated for straightening. Fig. 110 Fig. 109
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