[C320-list] Jabsco Head replacement

[Julian Elliott]

I am in the process this weekend of replacing the head; as mentioned a
plug-compatible, easy venture.  Mounting is 1" 5/16 lag screws through
fiberglass and into woood (which I assume is a block under the raised
platform on which the head sits.)  One gotcha: my base leak permeated down
into the wood and corroded one lag bolt, leaving the metal tip in the hole.
 This turns the project into a 2 weekender, as I forgot my drill.  I'm also
considering stepping up to 1 1/2" lag screws to ensure I get thru any
damaged wood.  There seems plenty of clearance to avoid breaching the hull!

Julian
Polaris 340


On Sat, 13 Jun 2009 18:37:25 -0400, djgleason1 <djgleason1 at juno.com> wrote:
> Scott:
> 
> I replaced the head on Proud Mary, #150 last summer while on a cruise. 
> The Jabsco was an exact fit replacement.  As best as I can recall, the
> base is screwed to thick fiberglass.  There are no parts to lose.
> 
> Dave Gleason        
> 
> On Sat, 13 Jun 2009 17:57:00 -0400 Scott Thompson
> <surprise at thompson87.com> writes:
>> I managed to crack the pump assembly while overhauling it today.  WM 
>> is 
>> running a sale on the latest version of the Jabsco Compact Manual 
>> head, 
>> which appears to be a drop-in replacement for the one that came on 
>> Surprise, and which costs only a few dollars more than the pump 
>> assembly, which isn't in stock anyhow.  So I bought one.  Wish I had 
>> 
>> done that first!
>> 
>> It appears to be a simple case of unbolt the old one and bolt on the 
>> new 
>> one.  Dimensions are identical.
>> 
>> However, I am reluctant to unbolt the old one without a better 
>> understand of how it is attached.  I don't see any way to get at the 
>> 
>> back of the fiberglass unit to which it is bolted.
>> 
>> Can anyone who has removed their original head tell me how they are 
>> 
>> attached?  I'm hoping there are attached nuts or threaded plates, or 
>> 
>> maybe it's just mounted via lag bolts into a wooden framework.  If 
>> there 
>> are loose nuts on the backing then I have a problem.
>> 
>> 
>>