SAFARI

ENGINE

Fig. 13

Fig. 14

Fig. 15

Fig. 16

7 Check twist and bend of connecting rod by using

new piston pin in small end bush. Measure twist

and bend of connecting rod with a feeler gauge

with respect to vertical face of connecting rod

alignment gauge in vertical and horizontal planes

and at a distance of 50 mm from the joining centres

of small end and big end bosses. Fig. 14 & 15.

8 If necessary, straighten connecting rod in cold

condition.

9 Check connecting rod big end parent bore.

10 If diameter of connecting rod big end parent bore is

slightly more than maximum permissible limits, it is

possible to reclaimconnecting rodprovidedthatwear

is confined only to cap. Connecting rod can mating

surfacemaybe slightly facedandparent bore finished

ona connecting rodboringmachine.However,centre

to centre distance between small end and big end

bores should be strictly as specified.

11 If one or more connecting rods are to be replaced,

ensure that the difference in weights of the

connecting rods in one engine is within permissible

limits. (Max. difference in weight 10 gm).

12 Fit newpair of connecting rodbearingshell according

to size of crank pin, making sure that securing lugs of

bearingshells areproperly seated ingroovesof parent

bore of connecting rod and cap. Fig. 16.

13 Place bearing cap with bearing shell on

connecting rod, tighten and torque fastening bolts

(preferably use new bolts) with torque wrench to

specified value. Fig. 17.

14 Measure connecting rod bearing bore with bore

measuring gauge at three points as shown. Fig. 18.