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| Volvo Engine >> ROD SIDE CLEARANCE
Crankshaft & Connecting Rod Assembly Caution For
1980-1984 2.3L AQ151 & AQ171 Volvo Marine Engines
The AERA Technical Committee offers the following information regarding a connecting rod and crankshaft assembly caution for 1980-1984 2.3L AQ151 & AQ171 marine engines. This information is most useful when engine disassembly and reassembly personnel are different people.
These engines use a crankshaft and connecting rod combination that appears to be ?not right" when the connecting rods are assembled to the crankshaft. The reason for this concern is expressed in the photo below, as it appears there is excessive rod side-play. The view shown below is normal even though it shows approximately .125" clearance on each side of the rod.
Previous service information has been reported to be unclear as to the allowable side play for connecting rods. Illustrations? showing ?normal" rod side play is in most manuals has further confused the issue.
Volvo refers to this extra rod side clearance as a ?low friction" design and they use it in several of their automotive engines as well.
The AERA Technical Committee
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