ShurFlo 5.7

[Bob Lawrence]

Hi Ryan,
I had the same problem when installed my new Surflow 5.7. Finally
figured it out and also ran a fused wire direct to batteries. No more
problems.
Bob Lawrence
84 PT36
Texas

> Update on my water pump problem:
>
> As it turns out, voltage drop was indeed the problem. This project
> took me awhile to solve because I made it bigger than it had to be -
> as usual. I took the bedroom apart and ran a new, 40 amp fused +12v
#8
> gauge wire direct from the batteries. I terminated it in a custom
> enclosure under the driver's side bed with (4) fused links that
light
> LEDs to indicate a blown fuse. I now have 4 separate, fused circuits
> under there with plenty of available power. One of them powers the
> pump with a #12 gauge wire and a 20 amp fuse. I installed a water
leak
> detection system under both beds and put that on another of the
> circuits, leaving 2 more available for future use.
>
> Inside the aircraft bin storage up above, I pulled the backing panel
> off and found a large copper ground bar. I tied a new ground there
> with another #8 gauge wire and terminated that with a small screw-
down
> bus bar under the bed near the new fused enclosure. I installed a
> relay on the existing pump circuit to flip power to the pump.
>
> While I was under there, I also replaced most of the flexible water
> lines, including the main line feeding the water tank. I installed a
> valve on the main line to make future plumbing work possible without
> draining the tank, and I removed the old strainer and installed the
> new Shurflo Extreme strainer I bought with the pump last year. Oh, I
> also put labels on the new circuits indicating their purpose &
> termination points so as to make it easy to service for any future
> owner, just in case I sell the coach some day.
>
> The system works GREAT now! In fact, the pump is running much slower
> and quieter while providing more pressure. I'm very happy. My next
> trick, to finish this up the way I want it, will be to purchase a
> second pump and tie it into the main system - I already made room
for
> one next to the existing pump. I'll install a switch to flip a
relay &
> select between the two pumps, so if I'm on the road and I lose a
pump,
> I'll have a live backup at my beck and call without needing to tear
> the bed apart.
>
> As always, I thank the members of this forum for their valuable
> advice. Without you folks, I probably wouldn't have bought this
great
> coach in the first place and if I did, I definitely would have a
hard
> time maintaining it properly. I lurked here for a couple of years
and
> this forum was a huge factor in my decision to buy a Wanderlodge vs.
> some other brand.
>
> -Ryan
> '86 PT-40 8V92 (Now with great water pressure again!)
>