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anybody rebuild the old prestolite type trim pumps?

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Old 04-19-2006, 07:44 AM
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Default Re: anybody rebuild the old prestolite type trim pumps?

I'm not sure they are the same but I thought those vintage pumps spec'd 20 weight oil.
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Old 04-19-2006, 02:49 PM
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Default Re: anybody rebuild the old prestolite type trim pumps?

mine had atf in them and when i drained and flushed them i put atf back in, the trim lines to one drive were pinched under the tranny and that me be why my drives are moving at a different speed. my tabs also move a different speeds and i want to equalize the speed so i can trim both drives and tabs with one button when im running hard in big water. thx for your help, rm
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Old 04-19-2006, 04:39 PM
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Default Re: anybody rebuild the old prestolite type trim pumps?

I'm pretty sure they were specced with 30 wt.
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Old 04-19-2006, 06:39 PM
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Default Re: anybody rebuild the old prestolite type trim pumps?

cuda, 30 wt motor oil?
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Old 04-19-2006, 07:35 PM
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Default Re: anybody rebuild the old prestolite type trim pumps?

Originally Posted by ratman
cuda, 30 wt motor oil?
Yes, does it look like this?
Attached Thumbnails anybody rebuild the old prestolite type trim pumps?-4-19-2006-011.jpg  
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Old 04-19-2006, 07:59 PM
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Default Re: anybody rebuild the old prestolite type trim pumps?

joe, no mines the old square box style with the pancake selaniods,
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Old 04-19-2006, 08:22 PM
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Default Re: anybody rebuild the old prestolite type trim pumps?

merc calls for 10w30 but atf wil work also, any merc tech should be able to work on them, atleast if he can read the manual or you can if you like to read alittle, very simple/basic system


if so let me know Illemail you the manual section

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Old 04-19-2006, 09:35 PM
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Default Re: anybody rebuild the old prestolite type trim pumps?

That one I pulled out today, definetely had 30 wt.
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