Seawater Pump Belt – Bolt Torque ?

[Steve]

I have a 2008 QSB 5.9 425hp.  This morning the seawater pump belt shredded. I found the tension pulley bolt lying in the bilge.  I’m assuming the bolt came out, pulley wheel wobbled and belt shredded. 

Is there a specified torque for this bolt or just get it good and tight?

Thank You Gentlemen,

Steve

Topic

[Steve]

The Idler Pulley bearing is obsolete per Cummins so I just bought a new pulley from Seaboard.  It appears to be an easy swap but before I start something I didn’t bring tools for, is this as easy as it looks or will I need a puller to remove the old puller?  Thank You

[Steve]

Got it. Thank You Much !

Steve

[Tony Athens]

I’d replace the bearing too…………Simple to find  The # in on the bearing) ,  and any “hands-on” guy can change it.. This is the very early drive system.

[Rob Schepis]

Here’s the torque chart from the Cummins manual.  Inspect, clean and oil the threads.  You definitely want the bolt “tight.”

[Author]

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