8981159591 Original ISUZU Connecting Rod Bushing for Engine 6WG1 

Part number 8981159591 is an original connecting rod bushing specifically designed for Isuzu 6WG1 series large displacement diesel engines. Its common part number is often marked as 8-98115959-0 or 8981159590. This liner is mainly suitable for Hitachi large and ultra large hydraulic excavators equipped with this 15.7-liter engine, including ZX450-3、ZX470-3、ZX520、ZX600、ZX650-3、ZX670、ZX730、ZX800、ZX850-3、ZX870-3、ZX870-5G、ZX890、ZX900  Waiting for the model.
 

This product is an Isuzu original connecting rod small head bushing, which is a key sliding bearing installed in the engine connecting rod small head hole and matches with the piston pin. Its core function is to form a low friction, high load-bearing precision mating surface between the connecting rod and the piston pin, smoothly transmitting the reciprocating motion of the piston to the connecting rod, and withstanding the huge impact force and alternating load generated by combustion explosion.
 

Every 1000 working hours or during annual major maintenance, the wear of the liner can be indirectly determined by checking the copper chip content in the engine oil. Strictly following the maintenance cycle to replace engine oil and oil filters, and using designated grade engine oil, is the most effective way to delay liner wear. Fault symptoms and replacement timing: When there is a noticeable knocking sound in the engine (especially during cold start or acceleration), abnormal decrease in oil pressure, or insufficient power accompanied by blue smoke, it may be due to excessive wear of the connecting rod bushing leading to excessive clearance. Once diagnosed, it is necessary to immediately shut down for maintenance, otherwise it may lead to catastrophic consequences such as connecting rod locking, crankshaft strain, and even damage to the cylinder block.