Date: 14 June 2018. Stacking Battery
battery project continued the first step was to diagram out what was
there before I did anything. I drew a couple of simple sketches, numbering
both the batteries and the
studs. Then I removed the cables from each post. As I went along I secured them,
labeling each batch with the post number it came from. There were errors though.
The first and
most critical mistake was that some of the cables were installed
incorrectly by a previous worker. ALWAYS place the largest diameter cable closest to the
This battery was replaced. It had no water and was
damaged. On the right side is a red 1-gauge wire.
It is on top off a smaller cable. That's wrong. Always stack
cables with the thinnest wire on top.
When I put the replacement battery
in, I wired it so that the heaviest (thickest) wires were closest to
One problem I had was removing the extension studs atop the old batteries.
My vise grips held the bolt while I used a wrench the
remove the nut.
ALSO, please note that again the old battery cables were stacked
One set was a bear to remove. I ended up spraying
the extension post with PB Blaster.
Normally I'd have used Boeshield's T-9 which is my favorite.
It's made by Boeing.
Boeshield T-9 Spray - Rust
and Corrosion Protection Waterproof Lubricant
Spray this on and it
lubricates, loosens tight fittings, etc. I use it instead of
PB Blaster or other spray lubricants. It's by Boeing (the
aircraft people) and though $$ is worth paying retail.
Boeshield T-9 Bicycle Chain
Waterproof Lubricant & Rust Protection, 4 oz.Liquid
I bought this version of
T-9 too as it dispenses just a drop or three at a time. For
places where precise placement of the lubricant is desired,
this is the better choice. And it's less costly.
I have been a fan of
T-9 for a few years now. It is a good product. I bought the
liquid version for those places where I don't want
overspray. The cap twists open on the smaller 4 ounce size.
Incidentally, I'm still using the initial small dropper
version I bought back in 2016. I'm on the third can of the
Getting the stud extension posts on the new batteries was not easy.
I was reusing the old ones. To pry them apart the owner took the
ashore and used a bench vise. There is a limited area where they
The original 8-volt batteries had individual caps. The new batts had
one cover for all four cells. It was larger. There was only one way the extensions would
It was a bear (very
difficult) to get the extension post on properly.
Although you are not supposed to
use a washer in the stack of battery cables, in
this case I did use one to hold the extra post down securely to the
new 8-volt battery.
The boat's owner was kind enough to provide a
PILLOW ↓ for me to sit on while down in the bilge.
Nice, eh? Except I could not find the cables that
belonged on Post #8!
The diagram clearly shows a bunch of positive cables
attached at the inbound aft post on the port side.
It was at this point I called it a
day. Seven posts were finished on the port side.
Younger folks might not understand my insistence upon
stopping early. I know I used to like to finish every job. Now
however, stopping is a good idea. After all, I'm retired. Tomorrow
I'll be fresher and ready to tackle those missing cables for post
And yes, if you look at the
previous picture you will be able to spot the missing wires. Have I
mentioned stopping before becoming exhausted? It really was all so apparent
the next day...
Working when tired
is a recipe for mistakes. Don't do it!
I could not find the CABLES FOR
POST #8 ↓ until I
moved aside the brown pillow. Please be smarter than
You have no idea the heartache and worry that were so easily
resolved by shifting the pillow. Sigh.
The observant will spot the terminal end sans wire
above. That is the one
I replaced in the
Proper Attachment of a Terminal End
I coupled the post
#8 cables with a plastic wire tie covered by blue tape. This way I could not misplace
any individual cables. So I lost them all...
Wires in bilges migrate with
astounding speed, especially
when you're moving around down there. Secure your wires.
The primary engine feed 00-gauge hot (red/positive)
is attached to the top post of the battery.
On the side I've connected the smaller ones, stacked with the
largest diameter at the bottom.
thing I did prior to beginning this battery project was for the
owner's records. I drew a
schematic of the batteries. As I removed the cables I
told him where they belonged. He made notes on his cards. The next
person to tackle this will have our notes.
will be put in the Equipment Book for his vessel:
For the photo ↑
I've got the port and starboard card reversed.
Report: The engine started right up without issue. Detroit diesels
for this triple cabin motor yacht are reliable beasts. Give
them clean fuel, air and power and they run. It was fun to be a part
of making the 871's purr.
Thanks to the
owner for letting me play in his bilges...
As for me, it's summertime. I'm going to celebrate.
boating to you, and thanks for reading.
Are your battery cables stacked properly?
And, does your boat have her original engine? What is it?
In the Bilges,
St. Pete's Electro Battery ~
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