Descaling CAT 3126’s

dtfeld

Water Contrails
GOLD Sponsor
Jun 5, 2016
5,518
Milton, GA
Boat Info
410 Sundancer
2001
12" Axiom and 9" Axiom+ MFD
Engines
Cat 3126 V-Drives
Im planning to descale my raw water side, and I wanted some feedback on my plan before continuing. Researching I couldn’t find a flow schematic, but reading previous posts and following the pipes on the boat, looks pretty simple.

Here’s my setup...

Seacock->2” pipe->Strainer->Fuel Cooler->Raw Water Pump->Heat Excahnger->Transmission Cooler->overboard exhaust

My plan is this...

1. Use utility pump connected to the 2” pipe from the sea cock, and have the return come off of the pipe/hose that connects up to the exhaust elbow (disconnected from the elbow).
2. Remove water pump impeller, (replace with new when complete).
3. Plug 3/8” hose to the drip less shaft seal.

Is there anything more more to this mechanically? Don’t want to pump Barnicle Buster someplace it shouldn’t go.
 
David, There is a picture guide and how to that was really good some years ago. I have it run off somewhere and I will look for it today. Try doing a search there are several post about this. I will update if I can find it. GOD bless. JC
 
JC

I though I’d seen something too, but a bunch of searches did not produce what I wanted. I traced the pipes, and I didn’t see this as too difficult, I just want to make sure there isn’t some unknown path that I don’t see or know about.

Dave
 
I found the write up. Have to search 3116 and Rydlime. Looks like the only caveats is to make sure the shaft seal supply hoses are sealed....not much more too it.

I have built a flush system with a 1/3 hp utility pump and a 20 gallon garbage can. I’m using cheap 25’ corrugated pump discharge hose, and I should be able to recirculate from the dock. I guess I should add a transfer pipe from one side to the other and do both at once, save time and money.

I’ll post pics of mine.

http://clubsearay.com/index.php?thr...with-rydlyme-cat-3116-99-400-sundancer.60586/
 

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