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Old 26-02-2018, 03:53   #1
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Generator Head Gasket Replacement

Ladies, Gents,

Anyone have any experience or a good guess on what it would cost to replace my head gasket on my 11KW Onan Generator in my forward lazerette? It's a pretty large space and no problem getting a torque wrench in there so I'm almost positive nothing will have to be lifted out.

Thanks in advance,
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Old 26-02-2018, 09:34   #2
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Re: Generator Head Gasket Replacement

Sorry never had it done. I would be interested to know why/how the gasket has gone and how many hours on the Genny and what the symptoms were.

I looked in a service manual for a similar Onan, just guessing I reckon half a days work if the only issue is the gasket.
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Old 26-02-2018, 09:40   #3
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Re: Generator Head Gasket Replacement

Real hard to say. Most diesels you can have the head off in 1/2-1 hour. (depends on what in mounted on the engine to get at it!) Clean up probably another hour.
But I think things need to be looked at to discover why the gasket failed. So you are probably talking having the head pressure tested and maybe ground flat for a proper job. So another 1-2 hours driving time, shop fees, reassembly, torqueing, adjusting valves etc. Maybe 8 hours total. $800?
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard

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