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 :
Connecting rods are NOT to be heated for
straightening.
Fig. 110
Fig. 109




