So close yet so far away

[Carpediem44DB]

I have a very short list of survey findings to correct to close the deal on the 506. The buyers are on vacation for a week but upon their return we will meet to turn over the keys and deliver the boat.
The two items were simply to replace the impeller on the gen set that I burned up taking the boat to haul out by missing the valve opening on pre float checks. The other is take care of finishing a gel coat repair on the swim deck that I started prior to my by-pass surgery.
The genset on this boat is in the most generous location one could ask for. Dead center in the engine room with the pump right up front. Easy peasy, right? For the life of me I could not get the impeller installed yesterday. I tried no less that 20 times to slide it on the shaft but the woodruff key keeps pushing out! I dinged up the key to help hold it in place but still could not get it. I finally just dabbed some 4000 on the key, pressed it in place and said F it for the day. Sometimes you just need to walk away and come back fresh. I could probably flick the impeller at the pump back handed when I return and it will slide right on. I was so frustrated that I did not even attempt to mess with the gel coat project. I just drove home instead and cleaned the barn and continued work on my Alfa Romeo restoration project. I have a day off on Tuesday so I will go tackle those two last projects. This boat is really making it easy for me to say good bye to big boats

 

[Nater Potater]

I could probably flick the impeller at the pump back handed when I return and it will slide right on.

I don't know what to tell ya'; some things are beyond explanation. Could it be that the new impeller's notch is a bit too narrow, pinching the sides of the key?
My high school bud and I were changing the clutch in his mom's 240Z and couldn't get it to slide in that last 1/2". We pulled the clutch off twice, used a different pilot shaft alignment tool, put it on without the clutch just to see, but no joy with the whole assembly. After about six hours, I reached in from the top and squeezed the bellhousing and back of the engine together, and it slid home with a clunk like it was no big deal. You never seen two teenagers spin bolts in that fast!

 

[Pirate Lady]

Flip the buyer $100 and tell him fix it himself. I have zero patience with people that nickel and dime you.

 

[jmauld]

Flip the buyer $100 and tell him fix it himself. I have zero patience with people that nickel and dime you.

I have to agree with this. If the survey found $200 in problems on a 50’ yacht, that buyer should be flipping you a $100. Personally, I wouldn’t ask you to do anything if that’s all that was wrong with it.

 

[Woody]

Flip the buyer $100 and tell him fix it himself. I have zero patience with people that nickel and dime you.

I have to agree with this. If the survey found $200 in problems on a 50’ yacht, that buyer should be flipping you a $100. Personally, I wouldn’t ask you to do anything if that’s all that was wrong with it.

Ya but, you all expect the buyer should take the word of the seller, that the generator 'just needs an impeller', maybe the seller is a shyster and the generator is junk. If I was the buyer I'd say 'you change the impeller and show me that the generator works properly'. It's a fair request or adjust the price down several thousand and I'll take the risk.

 

[Woody]

I have a very short list of survey findings to correct to close the deal on the 506. The buyers are on vacation for a week but upon their return we will meet to turn over the keys and deliver the boat.
The two items were simply to replace the impeller on the gen set that I burned up taking the boat to haul out by missing the valve opening on pre float checks. The other is take care of finishing a gel coat repair on the swim deck that I started prior to my by-pass surgery.
The genset on this boat is in the most generous location one could ask for. Dead center in the engine room with the pump right up front. Easy peasy, right? For the life of me I could not get the impeller installed yesterday. I tried no less that 20 times to slide it on the shaft but the woodruff key keeps pushing out! I dinged up the key to help hold it in place but still could not get it. I finally just dabbed some 4000 on the key, pressed it in place and said F it for the day. Sometimes you just need to walk away and come back fresh. I could probably flick the impeller at the pump back handed when I return and it will slide right on. I was so frustrated that I did not even attempt to mess with the gel coat project. I just drove home instead and cleaned the barn and continued work on my Alfa Romeo restoration project. I have a day off on Tuesday so I will go tackle those two last projects. This boat is really making it easy for me to say good bye to big boats

Stepping away is a good thing. I learned that a long time ago. If you don't whatever you're missing you continue to miss. When you come back to it, whatever was causing the problem usually is there waving it's arms at you.

 

[mrsrobinson]

Ya but, you all expect the buyer should take the word of the seller, that the generator 'just needs an impeller', maybe the seller is a shyster and the generator is junk. If I was the buyer I'd say 'you change the impeller and show me that the generator works properly'. It's a fair request or adjust the price down several thousand and I'll take the risk.

This

 

[Pirate Lady]

Missed part about the gen didn’t run at all. I digress.

 

[douglee25]

Make sure the shaft is vertical. If that requires bumping the motor or turning the shaft, use gravity to help hold it in. You could use some grease as well. Gotta love those days.

 

[Dave - M]

I'm thinking we need pics of the Alfa Romeo

 

[Carpediem44DB]

Pics of Alfa project will be posted in the show your cars thread occasionally as milestones happen. The generator runs great, I just F'd up and burned up the impeller when I took the boat for haul out so I am fixing the issue I created. I am also finishing a gel coat repair that I started. The other findings on survey I credited to buyer $3000 grand for. The buyers have been good to work with and I am not using a broker so I have room to be a little generous and help the new owner a bit. I think he is biting off a bit to chew so I am just being as reasonable as possible to make this deal close. Deal is set to close this week and then it's back into the deep end in a new Newmar Dutch Star 4081 motor home. Hammering out a deal this weekend.
Cheers

 

[Carpediem44DB]

Make sure the shaft is vertical. If that requires bumping the motor or turning the shaft, use gravity to help hold it in. You could use some grease as well. Gotta love those days.

I am going to take the impeller to the shop tomorrow and give it a little loving and bevel the entry for the woodruff key to help guide it in. It is a beefy hub with plenty of meat to work with. As they say, "a farmer makes a plan"

 

[Carpediem44DB]

Got back to the boat this morning and after filing a slight ramp on the keyway of the new impeller, it slid right on first try! I turned on the thru hull valve and fired up the genny and confirmed I had no leaks so I reinstalled the sound shield and let her run while I put away my tools and prepared to get started on the next chore. The genny shut down on its own after 10 mins! The coolant reservoir emptied so I knew it over heated and shut down by design. I went ahead and took the end caps off of the heat exchanger and found significant fouling and bits of the burned up impeller debris. I cleaned up the tubes and reassembled it and before I connected the outlet hose to the exhaust I fired the genny to ensure good flow. I ran it for 10 minutes and everything was cool as a cucumber. I think it was running hot lately without my knowledge and the extra impeller debris put it over the edge. Looking forward to closing this week and handing over the keys! We committed to a 2022 Newmar Dutch Star 4081 motor coach last night and will drive to LA to pick it up late next week if all goes as planned. Looking forward to the transition. I still will be doing some canvas work this fall so I will be around the boats, just not paying the bills anymore.

 

[Carpediem44DB]

This generator is really fighting me. It will now only run for about ten minutes before it shuts down on it's own. I see no evidence of coolant in the water but expansion tank does empty after the engine shuts down. I am going to check the two temperature safety shut down sensors and I guess I need to figure out how to pressure test the system to see if I have a blown head gasket or cracked head. The heat exchanger reservoir cap retained pressure for three days after it shut down last so I am thinking that the block, head and gasket are probably ok. Also there is no water in the oil. This one has me puzzled. Any ideas. It is a 21 KW Kohler with a turbo charger. Model is 21 CCOZ.

 

[douglee25]

Verify oil is topped off.

Start bypassing sensors for water, oil, etc until the problem goes away.

What error code does it give you when it shuts down?

 

[Tim Fila]

This generator is really fighting me. It will now only run for about ten minutes before it shuts down on it's own. I see no evidence of coolant in the water but expansion tank does empty after the engine shuts down. I am going to check the two temperature safety shut down sensors and I guess I need to figure out how to pressure test the system to see if I have a blown head gasket or cracked head. The heat exchanger reservoir cap retained pressure for three days after it shut down last so I am thinking that the block, head and gasket are probably ok. Also there is no water in the oil. This one has me puzzled. Any ideas. It is a 21 KW Kohler with a turbo charger. Model is 21 CCOZ.

Shouldn't it give an error code when it shuts down?

 

[Carpediem44DB]

Oil is good, and this unit does not have a control panel with gauges or leds to indicate codes.
I am nervous about bypassing sensors and then letting it overheat till it seizes.
I guess though since there are two over temp sensors, all it takes is for one of them to be bad to shut it off prematurely. The manual gives resistance values for evaluation of the sensors so I’ll start there. This all started with running it with a sea cock closed and burning up the impeller. The sensors worked and shut down the engine. I am leaning towards maybe the exhaust water temp sensor has an issue since it was subjected to the high heat exhaust with no water flow.

 

[bajturner]

Oil is good, and this unit does not have a control panel with gauges or leds to indicate codes.
I am nervous about bypassing sensors and then letting it overheat till it seizes.
I guess though since there are two over temp sensors, all it takes is for one of them to be bad to shut it off prematurely. The manual gives resistance values for evaluation of the sensors so I’ll start there. This all started with running it with a sea cock closed and burning up the impeller. The sensors worked and shut down the engine. I am leaning towards maybe the exhaust water temp sensor has an issue since it was subjected to the high heat exhaust with no water flow.

Do you have to keep filling the coolant reservoir?

 

[Carpediem44DB]

I do but, when I replaced the engine coolant water pump a while back due to a failed bearing and seal, the new pump had two 1/8 inch barbed hose fittings on it that the old one did not. Not sure what they are for as I can’t find any information about them in the manual. I simply connected the two with a loop of 1/8 Tygon hose. The hose slid over pretty tight and I did not install any type of clamps. When the engine shuts down I find one of the ends popped off and antifreeze in the bottom of the engine mount pan. Today I am going to use my nifty new safety wire clamp tool that Tom Mott turned us on to to correct that issue. I am hoping that the hose popping off when the engine comes to temp is causing the loss of coolant and system pressure causing the shut down.
Seems obvious now that the hose should be clamped but it worked fine until I burned up the impeller. It could be that the loss of the impeller heated the water pump enough to relax the fit of the little Tygon hose enough for it to not hold now under normal conditions.

 

[Nater Potater]

It could be that the loss of the impeller heated the water pump enough to relax the fit of the little Tygon hose enough for it to not hold now under normal conditions.

While Tygon’s rates for 275*F, I think that’s where your root problem lies. Unless it’s braid-reinforced, I’d be concerned that the hose itself would blow under the heat and temp of the operating system. Are the barb fittings threaded, or just pressed into the housing? Pipe plug those critters if threaded.