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f28 packing
Posted: Mon Feb 22, 2010 10:02 am
by yzf195
Some one please help me i have a 1978 f28 with twin 318's with v drives and would like to know can i change the packing on the shaft with the boat in the water and if so what is involved? thanks in advance Keith
Posted: Mon Feb 22, 2010 10:09 am
by Rodman
Posted: Mon Feb 22, 2010 1:12 pm
by foofer b
I believe the shaft has to be uncoupled from the engine and pulled out partially removed . I don't think you can do it in the water. Do you have a trailer to put it on or a marina nearby? Is your packing leaking? Tried to tighten it ?
Posted: Mon Feb 22, 2010 1:27 pm
by Paul
I have seen it done where the nut was removed and slid up the shaft which allowed water to flow in freely into the boat until a rag could be tucked into the shaft log around the shaft. The rag slowed the flow to a light trickle while the packing was replaced in the nut. The rag was then removed and the nut put back into place quickly. The bilge pump had the boat dry again within a few minutes.
Although this method works, I personally prefer to haul the boat out to replace a packing. This allows you the oportunity to inspect the shaft where the seal rides.
Posted: Mon Feb 22, 2010 1:39 pm
by Jersdevil
I agree do it on the hard...Murphey's Law prevails.
We did ours on the hard last spring.
Posted: Mon Feb 22, 2010 2:43 pm
by Paul
One more thing that you might consider, if you plan on keeping the boat for a while, is a mechanical shaft seal. I installed a LasDrop shaft seal in mine in 2000 and have had a dry bilge (except when I wash it) ever since with no maintenance. They are a little pricey though so if you plan on selling the boat in a few years, you're probably better off to replace the packing.
Posted: Mon Feb 22, 2010 2:52 pm
by ready123
Will be testing this version of almost dry packing this year...
http://www.e-marine-inc.com/products/gf ... ml#measure
Posted: Mon Feb 22, 2010 3:27 pm
by Rodman
That`s what I bought and put in mine.
Posted: Mon Feb 22, 2010 7:55 pm
by foofer b
Rodman, did it leak?
Posted: Mon Feb 22, 2010 8:40 pm
by Rodman
foofer b wrote:Rodman, did it leak?
wasnt looking with the trouble i had i will look this weekend when I do another run.
Posted: Mon Feb 22, 2010 8:49 pm
by foofer b
So Whaddya say, Silver Glenn Springs in two weeks?
Posted: Mon Feb 22, 2010 9:15 pm
by prowlersfish
Good stuff holds up well .
I do mine in the water , I don't see why one would unbolt the shaft .
If you have never done it in the water don't panic when the water flows in
Posted: Mon Feb 22, 2010 9:55 pm
by wowzer52
Prowlerfish, you did yours in the water but you don't panic about anything. After hearing some of the stories I think you must be part dolphin.
Posted: Mon Feb 22, 2010 10:36 pm
by ready123
If you think about it the clearance between shaft and box is not that large, also it is not that far under water so small head of water, it does not gush in as you seem to think it would...... no need for a fire pump.
Posted: Tue Feb 23, 2010 6:36 am
by prowlersfish
wowzer52 wrote:Prowlerfish, you did yours in the water but you don't panic about anything. After hearing some of the stories I think you must be part dolphin.
Part nut and part crazy