Raw Sea Water Pump Upgrade - Ford Lehman 120HP 6D380-120 (2715)
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- čas přidán 19. 05. 2024
- In this video, I replace/upgrade the OEM Jabsco raw seawater pump with a Johnson ordered from American Diesel Corp. (americandieselcorp.com/). The upgraded pump is a one-piece design, increasing reliability. The AD kit includes a longer oil cooler hose and a small metal pin to block pressurized hot oil, preventing leaks around the gasket. Mating surfaces and the pin get coated with Permatex #2 Sealant.
6D380-120 (2715) Spare Parts List - img1.wsimg.com/blobby/go/adf5...
Permatex 2 Sealant - amzn.to/3wKg2aQ
Gearwrenches - amzn.to/3Kb5TXK
Boat Repair/Upgrades Playlist - • Boat Repairs, Upgrades...
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*6D380-120 (2715) Spare Parts List* - img1.wsimg.com/blobby/go/adf5e9b7-e3d7-404a-bc52-39a9b19b7b49/downloads/Lehman%206D380-120%20(2715E)%20Spare%20Parts%20List_PNG.pdf
Permatex 2 Sealant - amzn.to/3wKg2aQ
Gearwrenches - amzn.to/3Kb5TXK
Boat Repair/Upgrades Playlist - czcams.com/play/PLp14lzXh07ulNRcA1KdaHwQ-Qwknf8Mno.html
Love those Ford Lehman engines. They are so reliable and easy to work on. Good video, thanks for sharing.
you were smart to order an upgraded pump. I had Volvo's and Chevy's engines in mine. I always kept an eagle eye on my temp gauges and inspected the filters & pumps. I was lucky & caught the temp slightly high before a trip. I took the pump apart and noticed one fin of the impeller was starting to split. I ordered just the impeller talking with the service desk. when they quoted me the price; i stopped him and said all I wanted was the impeller, not the whole pump. He replied," you've never had a Volvo before have you ?". I could buy the whole pump for the boat with Chev engines for that price. Yes; double clamp all hoses. Like they say about boats = Bring On Another Thousand.
I'm glad you're doing your part to continue the old saying that boat stands for break out another thousand!
A thousand is a great deal these days. :)
Hi Ray: Great video of changing the raw water pump. We had put a quick release impeller cover on the old pump in Vestri which was much easier to remove when checking or changing the impeller. I am not sure if you can reuse it on the new configuration...but give it some thought. Can't wait for your cruising videos this year. Cheers, Howard
Thanks, I saw the thumb screws. :) I have been exploring the low water temperature issue and pulled out the sender the other day. From what I can tell, the temperature sender installed is an AC Delco used in old GM cars like Corvettes. Likely it is a single gauge sender and not a dual gauge, I think. If that is the case, it would make sense to read low, as the resistance would be off with two gauges. I put it back and going to try disconnecting one of the gauges and see if the temp comes up. If so, I may just install a switch to choose read flybridge or low helm until I can source the correct sender.
Think I would replace the elbows too as long as I was at it,
Nice
Ray is there anything you wouldn't attempt to fix? I don't think so.
Thanks for that information Ray you know that I know very little about boating I did not realize that it was cool with seawater, I would think that would be rough on the system with the salt water going through there through a motor?
There are two cooling systems sea water and fresh with antifreeze coolant mix. Inside the engine they use regular automotive diesel 50/50 mix coolant. The sea water system uses external heat exchangers for engine and transmission oil and fresh water coolant. Here is a diagram of a typical system. boattest.com/sites/default/files/images/2023-10/Screen%20Shot%202023-10-31%20at%204.03.28%20PM.png The fresh water cooling system also is piped to the boat's water heater which has a a built in heat exchanger so when we arrive there is a full tank of hot water.
Oh, I forgot another thing they use screw in sacrificial zinc anodes in the raw water system so they corrode versus the metal in the exchangers. Looks like this amzn.to/4bP1Oo0
Break Out Another Thousand.
All someone did was use a female elbow with a nipple. Add a close nipple to the other end to extend and attach hose to it
I'm having trouble finding the part to adapt it. The elbow is 1" inside diameter but the input sea water hose they use is 1 1/2 inch in diameter.