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Old 15-10-2010, 01:31   #1
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Nanni Heat Exchanger O-Rings

hi all .has anyone changed the o rings in a nanni 85hp 5cyl turbo.
im just up to hours that i have to change .but have no idea where to start.i believe the o rings are just inside the end caps?do i just undo the caps and look see ?or is there any special things i should look for?
thanks in advance.
gary
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Old 15-10-2010, 05:16   #2
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What model is it. Nanni website doesn't list a 5 cylinder.
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Old 15-10-2010, 05:27   #3
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its a superseded model 5.250tdi.
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Old 15-10-2010, 05:56   #4
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Tried to find views of engine on net-no luck-what does Nanni say? Generally heat exchangers have a through-bolt which holds both ends in place, or seperately bolted on ends, with either O-rings or rubber discs. Replacement procedure is usually well thought out by manu, as this is a service which say be carried out under not-ideal conditions. Check that it doesn't also contain zincs, and check tubes for blockage. Sargassum weed berries fit perfectly in Westerbeke tubes.
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Old 15-10-2010, 16:22   #5
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thanks very much.i was hopeing for something like that.
gary .
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