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Group 21 Engine Body
Serration on connecting rod big-end.
Inspect the serration on connecting rod. big-end by
conducting a Magnaflux (magnetic particle) test. If
cracking or damage is found, replace the connecting
rod.
Connecting rod bearing thickness
Use a ball-point micrometer to measure the center of
each bearing shell. If the thickness exceeds the ser-
vice limit on the upper or lower shell, replace both
shells as a set.
Connecting rod bearing thickness STD, mm [in]
Nominal value ........... 3.000 [0.11811]
Assembly standard ... 2.9 72–2.985 [0.11701–0.11752]
Service limit .............. 2.930 [0.11535]
Bearing thickness –0.25 [-0.0098], mm [in]
Nominal value ........... 3.125 [0.12303]
Assembly standard ... 3.097–3.110 [0.12193–0.12244]
Service limit .............. 3.055 [0.12028]
Bearing thickness –0.50 [-0.0197], mm [in]
Nominal value ........... 3.250 [0.12795]
Assembly standard ... 3.222–3.235 [0.12685–0.12736]
Service limit .............. 3.180 [0.12520]
Bearing thickness –0.75 [-0.0295], mm [in]
Nominal value ........... 3.375 [0.13287]
Assembly standard ... 3.347–3.360 [0.13177–0.13228]
Service limit .............. 3.305 [0.13012]
Bearing thickness –1.00 [-0.0394], mm [in]
Nominal value ........... 3.500 [0.13780]
Assembly standard ... 3.472–3.485 [0.13669–0.13720]
Service limit .............. 3.430 [0.13504]
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