Posts In The “Technical” Category

Replacing GenSet Cylinder Head Part I

Replacing GenSet Cylinder Head Part I

  In the previous installment of our maintenance series, we diagnosed lack of power output on a Northern Lights M843NW3.3 12KW generator with 6,700 hours of use over 10 years. We concluded the #3 cylinder exhaust valve seat had failed. In this second part of the series covering the low power output issue with our…

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Valve Seat Recession

Valve Seat Recession

About four weeks ago, our generator suddenly went from normal output to having far less power. Instead of the 10+ kW it normally produced, it could only generate 7 kW. We worked through the Northern Lights diagnostic procedure and concluded we had a valve or valve seat problem on #3 cylinder exhaust. The steps we…

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Diagnosing GenSet Low Power Output

Diagnosing GenSet Low Power Output

  In this installment of our maintenance series, we diagnose low engine power output on a Northern Lights 12kW generator. This engine is unable to produce more than 7kw of power, but can reliably deliver that, and otherwise is running fairly well. We walk through the diagnostic procedure checking for intake blockage, fuel system problems,…

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Replacing Generator Overhead Light

Replacing Generator Overhead Light

The overhead space between our generator and the ceiling is rather limited, and the fluorescent light mounted directly above it consumed a large chunk of that. So much so that James recently broke a bulb when jammed over top working to free the exhaust elbow from the exhaust hose. So we decided to remove the…

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Changing Starter in 12kW Northern Lights

Changing Starter in 12kW Northern Lights

  Our Northern Lights 12kW generator is just a slight bit slower to start. In this video, we check the likely possibilities for slow to start, including air filters, fuel filters, voltage at battery, and voltage at starter during cranking and determine that the starter is at fault. We then show the process of changing…

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Gen Rear Main Oil Seal

Gen Rear Main Oil Seal

Our generator showed a light misting of oil around the generator cooling fan a month back. At just under 7,000 hours, it’s a bit early to be leaking, but it’s not a huge issue since rear main oil seals don’t fail catastrophically nor even quickly. It just means that in the next year or so,…

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Maintaining at Gigha

Maintaining at Gigha

While our cruising lifestyle may be on pause during the Scottish lockdown, our maintenance log isn’t. Several scheduled service items came due in mid-May, including annual testing, lubricating and changing the oil and filter in our gasoline engines, changing the hydraulic zincs, and charging our backup batteries. We also completed some unscheduled maintenance work, such…

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Load Shedding

Load Shedding

One of the challenges with the smaller electrical systems found on most boats is managing the power load. Whenever electrical loads are running on a boat, they are delivered by some power source. It might be the generator, it could be shore power, or it could be the inverter. But, whatever the power source, it…

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Water Leak

Water Leak

Saturday morning we lifted the floor covering in the master stateroom head to access stores and found the floor underneath soaked wall-to-wall. We opened up the storage area below and it also had a lot of water in it. The first task was to get everything out of the storage areas and all dried and…

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Reduced Generator Output

Reduced Generator Output

Our Northern Lights 12kW generator ran for years without any hard-to-diagnose problems. It just ran, and that’s the way we like it. For its entire 6,600-hour life, it’s been able to reliably produce 42 amps. It’s nominally a 50-amp generator, but due to highly non-linear load on Dirona, the power factor often is less than…

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Generator Oil Change

Generator Oil Change

  In this video, we change the oil in our Northern Lights 12kW generator and discuss related aspects including oil storage, obtaining new oil and disposing of used oil as we travel the world.    

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Inspecting John Deere 6068 Accessory Drive Belt and Bearings

Inspecting John Deere 6068 Accessory Drive Belt and Bearings

  An important annual service check on a diesel engine is to check the drive belt and bearing condition on all engine-driven accessories including the alternator and coolant pump. The video below steps through this simple service check on our John Deere 6068AFM75. The engine is a 266 hp, M2-rated marine diesel that is just…

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WeBost Cell Signal Booster Test

WeBost Cell Signal Booster Test

Sometime back we bought a WeBost Cell Signal Booster and tested it carefully on the boat.  We tried putting the phones in a low corner of the engine room to degrade the signal as much as possible and then tested the cell booster off and on. The signal booster made absolutely no difference across a…

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And We Have Propane

And We Have Propane

When we ordered Dirona back in 2009, we specified a propane barbecue and stove top, along with four 20-gallon (9 kg) aluminum propane tanks. Three of those tanks are stored in the cockpit locker underneath the barbecue, with a fourth in the aft port cockpit locker. We specified so many because filling propane tanks outside…

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Amsterdam Projects

Amsterdam Projects

As with last year, Amsterdam was a great place for us to spend the winter and complete many boat projects, ranging from large jobs such as changing the wing engine PTO clutch, bolting the Freeman hatch in place, replacing the hydraulic steering rod end and upgrading our replacing our old 46-inch flatscreen with a modern…

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Windshield Wiper Replacement

Windshield Wiper Replacement

On investigating a windshield wiper problem a few weeks back, the wiper arm literally fell apart in our hands due to corrosion. So we needed four new Exalto EX2108 adjustable length pantograph wiper arms. We searched on-line but all the listings we found were up over $200. Paying $800 to replace 4 wiper arms just…

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Samsung QN55Q70RA

Samsung QN55Q70RA

When we ordered Dirona back in 2009, we replaced the standard port-side settee with a custom TV lift sized to handle a 46-inch flat-screen. And during commissioning in Seattle, we installed a Samsung LN46B750 46-inch TV, which was reasonably state-of-the-art at the time. While we’ve had some troubles with the TV lift, the Samsung TV…

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Spitfire Arraow the World

Spitfire Arraow the World

When we first started planning our boat trip around the world, we expected that cruising internationally with our cat Spitfire would limit the countries we could visit, because we did not want to subject him to lengthy quarantines. In reality, the French territory of New Caledonia was the only destination that we opted not to…

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