S 500 Sedan (140.051) V8-5.0L (119.980) (1996)
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Conrods which have been overheated as a result of the bearing damage (blue discoloring) must not be re-used.
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Conrod and conrod caps are marked together.
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The conrod stem must not have any transverse scoring and notches.
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Conrod are supplied With machined conrod bush as a replacement part.
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Conrod and crankshafts with different thrust collar diameter may be installed together when performing repairs.
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Engine 119.97x The conrod and the conrod cap are fixed together with fit sleeves.
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Pay attention to difference in weight when replacing the conrod.
Connecting Rod Of Engine Type 119.96x Shown
Legend
1
Weight balance
9
Locating grooves
10 Oil filling
Checking
1. Check conrod bolts, replace if necessary.
2. Engine 119.96: Examine bores for conrod bolts.
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Fit conrod cap onto a conrod bolt.
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If the conrod cap moves down as the result of its own weight, the conrod must be replaced.
3. Install conrod bearing caps.
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Oil thread and bolt head contact surface for this step and tighten to 40 Nm.
4. Measure conrod bearing basic bore.
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If the basic bore exceeds the value of 51.619 mm or is conical, dress bearing cover at its contact surface on a dressing plate up to max. 0.02
mm.
