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4 DLT ENGINE
C
heck connecting rod big end parent bore dimension.
Refer Figure 98
I
f connecting rod big end parent bore is slightly more
than maximum permissible limits, it is possible to
reclaim connecting rod bearing cap. Connecting rod
bearing cap mating surface may be slightly faced.
P
arent bore should then be finished on a connecting
rod boring machine.
ENSURE THAT CONNECTING ROD BIG END AND
SMALL END AXIS ARE PARALLEL TO EACH
OTHER WITHIN SPECIFIED LIMITS. CENTER TO
CENTER DISTANCE BETWEEN CONNECTING
ROD SMALL END AND BIG END IS MAINTAINED
WITHIN SPECIFIED LIMITS.
I
f one or more connecting rods are to be replaced,
ensure that difference in weight of connecting rod in
one engine is within permissible limits.
I
nstall 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 . Refer Figure 99.
I
nstall connecting rod bearing cap with bearing shell
on connecting rod.
T
ighten connecting rod bearing cap mounting nuts
to specified torque . Refer Figure 100.
Fig. 98
Fig. 99
Fig. 100