CONNECTING ROD INSPECTION
id011000502800
1. Install the connecting rod cap. (See Connecting Rod Cap Assembly Note.)
2. Measure the connecting rod large end side clearance using a feeler gauge.
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• If it exceeds the maximum specification, replace the connecting rod or the crankshaft.
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Standard side clearance
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0.11-0.262 mm {0.0044-0.0103 in}
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Maximum side clearance
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0.435 mm {0.0171 in}
3. Measure the connecting rod large end side clearance using a plastigauge.
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• If it exceeds the maximum specification, replace the bearing or grind the crank pin, and use oversize bearings so that the specified clearance is obtained.
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Note
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• Cut the plastigauge as wide as the connecting rod bearing width, place it parallel to the crankshaft, keeping away from the oil hole.
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Standard oil clearance
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ZJ: 0.028-0.048 mm {0.0012-0.0018 in}
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ZY, Z6: 0.016-0.037 mm {0.0007-0.0014 in}
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Maximum oil clearance
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0.10 mm {0.0039 in}
Connecting rod bearing
Bearing size
|
Bearing thickness
(Center thickness) mm {in}
|
ZJ
|
ZY, Z6
|
Standard
|
1.504-1.520
{0.0593-0.0598}
|
1.509-1.524 {0.0594-0.0599}
|
0.25 mm
{0.01 in} oversize
|
1.629-1.633
{0.0642-0.0643}
|
1.629-1.637
{0.0642-0.0644}
|
0.50 mm {0.02 in} oversize
|
1.754-1.758
{0.0691-0.0692}
|
1.754-1.762
{0.0691-0.0693}
|
4. Measure the connecting rod small end using a caliper gauge.
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Standard inner diameter
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ZJ: 17.943-17.961 mm {0.7065-0.7071 in}
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ZY, Z6: 18.943-18.961 mm {0.7458-0.7464 in}
5. Calculate the clearance between the connecting rod small end inner diameter and the piston pin outer diameter. If not within the specification, replace the connecting rod or the piston pin.
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Standard clearance
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-0.013- -0.037 mm {-0.0005- -0.0014 in}
6. Inspect the connecting rod for bending and distortion using a connecting rod aligner.
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• If it exceeds the maximum specification, replace the connecting rod.
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Maximum bending
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0.050 mm {0.0019 in}
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[Per 50 mm {1.97 in}]
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Maximum distortion
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ZJ: 0.050 mm {0.0019 in}
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[Per 50 mm {1.97 in}]
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ZY: 0.075 mm {0.0029 in}
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[Per 50 mm {1.97 in}]
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Z6:0.050 mm {0.0019 in}
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[Per 50 mm {1.97 in}]
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Center-to-center distance
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ZJ: 140.05-140.15 mm {5.514-5.517 in}
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ZY: 140.60-140.70 mm {5.536-5.539 in}
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Z6: 135.15-135.25 mm {5.321-5.324 in}