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Old 10-01-2009, 05:29   #1
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Location: Suffolk, UK
Boat: Roberts 434 Ketch - Rockhopper of Lune
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Perkins 4.154 Oil Cooler pipes?

Hi everyone
I have a Perkins 4.154 (62hp) diesel originally built in Florida.
One of the flexible pipes feeding from the oil pump to the oil cooler is starting to show signs of leaking. Other pipes leading from the Borg Warner Velvet Drive gearbox to the oil cooler are also suspect.

Perkins no longer offer spare parts for these and cannot even give me any specifications for the flexible pipes

My problem is I need to buy new pipes BUT I dont want to disturb the existing ones until I have the new ones in case I damage them beyond refitting and become disabled.

Does anyone know the thread types and sizes for these pipes.

Also when I do replace them will I need to bleed the oil cooler to remove any air or does the system handle that itself.

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Old 10-01-2009, 10:32   #2
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Location: Oro Bay Puget Sound
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Hi Pete make certain the outlet is nearest to the top of the cooler and gravity will purge the air. Many of Perkins oil coolers can be rotated and if the outlet is beside the inlet they should both be on top. I know, it sounds a bit kinky but it gets the air out. Jesse
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