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5) Connecting rod
Inspection
(1) Check for torsion, parallelism and damage.
Measure the torsion and parallelism using a
connecting rod aligner and correct or replace if the
repair value is exceeded.
1. Gauge
2. Piston pin
3. Torsion
4. Flat part of aligner
5. Pin
(2) Measure the bore of the connecting rod small end
bush and replace if the clearance to the piston pin
exceeds the service limit.
(3) Install the connecting rod to the crankshaft, measure
the axial play and replace the connecting rod if the
service limit is exceeded.
6) Connecting rod metal
Inspection
(1) Check the metal and if peeling, melting, uneven wear,
improper contact or other damage is noticed, replace
the metal.
(2) Measure the oil clearance of the crank pin and metal
using plasti-gauge.
a. Remove oil dust or other foreign matter stuck to
the metal and crank pin.
b. Cut plasti-gauge to the length same as the metal
width and place it on the crank pin in parallel
with the crankshaft avoiding the oil hole.
c. Install the connecting rod metal and connecting
rod cap and tighten with the specified tightening
torque.
Tightening torque
49 – 53.9 N·m
{5.0 – 5.5 kgf·m}
NOTE: Never turn the connecting rod at this time.
Torsion and parallelism of connecting rod (mm)
Standard
assembling value
Repair value
Torsion (per 100 mm)
Less than 0.08 More than 0.2
Parallelism (per 100 mm)
Less than 0.05 More than 0.15
029X
Clearance between bush and piston pin (mm)
Standard assembling value Service limit
0.010 – 0.025 More than 0.08
Axial play of connecting rod and crank pin (mm)
Standard assembling value Service limit
0.1 – 0.3 More than 0.7
Clearance between crank pin and connecting rod metal
(oil clearance) (mm)
Standard assembling value Service limit
J843
0.035 – 0.083 0.2
N843L
0.035 – 0.085 0.2
Set a plasti-gauge.
030X
Measure the oil clearance
031X
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