05-07-2010, 05:22 PM
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#21
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1stDave is currently offline
Status: First Lieutenant
Join Date: May 2010
Location: Monroe, LA
Find me on the Map
My Year: 1997
My Model: Z275 Shabah
My Engine: 7.4L Bravo III
Thanks: 2
Thanked 2 Times in 2 Posts
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Re: Draining tilt,trim,fluid reservoir
I just completed the same procedure on my Z275. The problem seems to be rainwater entering the the filler cap.
When I parked my boat at home for winter it was tilted to starboard. Water filled the ledge under the engine hatch and overflowed onto the trim assembly. I used my Oil vacuum pump to suck out the bad oil-water mix.
Tested trim up and down about 10 cycles after refilling with fresh 10W30.
Oil got a little milky so I sucked that out and tried again. One the third time the oil stayed clear.
I'll make sure that the whole boat is covered this winter. I may also install drains at each corner so water goes directly into the bilge. (my boat is not covered in summer).
Just a thought.
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