[C320-list] Jabsco Head replacement

[Ed Edwards]

Coincidently, yesterday I found a fracture in the base of the pump housing
on our PAL head.  I went to West Marine and bought the JABSCO replacement
which was on sale, pleasant surprise.  I decided that for the price
replacing the entire unit was better than replacing the pump housing. The
change-out took about 30 minutes.  The base is attached to the deck with 4
lag bolts.  Remove the water lines and the discharge line then replace the
old unit.  A little spray cleanser and a handful of paper towels was all it
took.

The JABSCO comes with a water line from the pump to the bowl, remove that
line and reattach the original water lines ,anti-syphon.

I made on small mistake, I used the original discharge hose fitting.  I
didn't realize that there was a one way valve inside that fitting until I
had it all back together.  The old valve is still in place, I'll keep the
new one in case the old one fails.

It was the easiest plumbing job I've ever had.

Ed Edwards, REBOUND  #347


On Sat, Jun 13, 2009 at 2:57 PM, Scott Thompson <surprise at thompson87.com>wrote:

> 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.
>
>
> --
> Scott Thompson
> Surprise, #653 (1999)
>