740A crank pulley part #856304

DRDNA · Oct 21, 2020

Does anybody know the diameter of this crank pulley that is mounted to the harmonic balancer? I can't find any info on it, and some idiot (me) tossed out the old one that was on the engine due to corrosion before it was measured. The engine was rebuilt in 2005.
Thank you!

RicardoMarine · Oct 22, 2020

See SEQ # 23 here.
These are nothing more than a GM double shiv V belt pulley.
However, in order to index your crankshaft style seawater pump, the pulley must have the 2 raised dowel portions stamped into it.

http://www.marinepartseurope.com/en/volvo-penta-explodedview-7745660-21-19956.aspx

DRDNA · Oct 22, 2020

RicardoMarine said:
See SEQ # 23 here.
These are nothing more than a GM double shiv V belt pulley.
However, in order to index your crankshaft style seawater pump, the pulley must have the 2 raised dowel portions stamped into it.

http://www.marinepartseurope.com/en/volvo-penta-explodedview-7745660-21-19956.aspx

True, but they come in a wide range of diameters- like 7.6 inches, 7.25 inches. I tried a 7.25, and it rubs the upper pulleys on the circulating pump.
Thanks

740A crank pulley part #856304

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740A crank pulley part #856304

DRDNA

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RicardoMarine

Gold Medal Contributor

DRDNA

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