Mitsubishi S4S Service Manual page 100

Measuring connecting rad bearing
ENGINE MAIN PARTS
Connecting rods, conneetion rod hearings and
piston pin bushings
(1) Clearance between connecting rod bearing and
crankpin
Measure the diameter of the crankpin and the
inside diameter of the connecting rod bearing as
shown in the illustration to check the clearance
between the two. If the clearance exceeds the
service limit, replace the bearing. Ifthe crankpin
is badly or unevenly wom, grind the crankpin
and use an undersize bearing.
0.25 mm [0.0098 in.], 0.50mm [0.0197 in.] and
0.75 mm [0.0295 in.] undersize connecting rod
bearings are available for service.
.-- ---!r
NOrE
11-- ......,
To measure the inside diameter of the connecting
rod bearing, install the upper and lower halves
in the connecting rod and tighten the cap bolts to
the specified torque.
Unit: mm [in.]
Item
Nominal Assembly
Service
Value Standard Limit
57.955
57.800
Diameter of
58
to 57.970 [2.2756]
crankpin [2.28] [2.2817 (Repair
to 2.2823] limit)
Clearance
0.030
between
to 0.090 0.200
connecting
[0.0012 [0.0079]
rad bearing and
to 0.0035]
crankpin
Measuring diagram
EBttE
49.0 to 59.0 Nrn
(5.0 to
6.0
kgf-m)
[36.2 to 43.4 Ibf-ft]
(2) Clearance between connecting rod bushing and
piston pin
Measure the inside diameter of the connecting
rod bushing and the diameter of the piston pin as
shown in the illustration tocheck the clearance
between the two. If the clearance exceeds the
service limit, replace the pin or bus hing
whichever is badly wom.
7-38
Measuring diagram
Measuring connecting rad bushing