The 3GM30F diesel is a 3 cylinder Yanmar located under the companion way ladder. The way to get to it is to take the ladder off by sliding it up and lay it on the settee or something out of the way. There is a latch at the back of the engine cover, unclip it. Then pull it back and lift it up for a second. You kind of have to bump over some coolant lines but then it comes straight out. Just slide the engine cover straight back into the main salon area. You have complete access to all four sides. Behind the Nav Station is the 3/4 berth. The top of the berth is the cockpit floor. To get to the transmission, stuffing box, and shaft is very easy.. the trick to it is how much stuff is on top of the access! haha You have to move everything and lift the cushion directly behind the engine to get the board out to get too them. Just slide it back unto the aft board. The after board is removable to get to the shaft seal. This is a great area to put beer and such. The batteries (2 deep cycle 110's and a starting battery) are under the Navstation seat on the outboard side. The water intake (and ball valve) are in the compartment aft of that.
The biggest thing you will need to do with the engine is to bleed the air out if you run out of fuel. If there is air in the fuel system, the motor will not start no matter how much you try. You will kill the batteries. Bleed it and it will fire right up. At the front of the engine on the left side as you look at it, there is a gray metal fuel jar. On the top of it is a bolt. Look aft and you will see a little lever, that’s the manual fuel pump lever. Crack the bolt open a bit and pump that lever til fuel comes out of the bolthead with no bubbles. Tighten the bolthead up while pumping the lever. Then follow the fuel lines up toward the top of the engine. There is a little bolt with a Phillips head where the lines split into 3 metal lines. Use the big screwdriver to crack that open and pump the lever again til there is a little fuel that runs out by the screwhead then tighten. Now start the engine. Crack that screwhead a bit after the motor is running to get any last bit of air out so the motor runs smoothly.
You also check the oil on the same side as you bleed the fuel line (the starboard side next to the sink). You will see the dipstick and it is self explanatory. Getting the oil out to change it requires starting the motor to warm the oil (it must be very warm/almost hot), putting the pump dipstick tube in the dipstick hole and suck out the oil. About a gallon. The oil filter is on the port side.There are spares behind the back of the port settee with the tools and spare parts.
The transmission oil check is on the transmission housing behind the motor. It is a yellow cap.Check the manual but I believe oil comes to the bottom of the dipstick, it is hard to check because the oil is very clean. It uses the same oil as the engine, Rotella-T 15w-40. No need to change it, just make sure it is at the proper level.
The Nigel Calder manual will spell out aything that you need to fix/investigate and there are all the supplies and tools you should need.
The biggest thing you will need to do with the engine is to bleed the air out if you run out of fuel. If there is air in the fuel system, the motor will not start no matter how much you try. You will kill the batteries. Bleed it and it will fire right up. At the front of the engine on the left side as you look at it, there is a gray metal fuel jar. On the top of it is a bolt. Look aft and you will see a little lever, that’s the manual fuel pump lever. Crack the bolt open a bit and pump that lever til fuel comes out of the bolthead with no bubbles. Tighten the bolthead up while pumping the lever. Then follow the fuel lines up toward the top of the engine. There is a little bolt with a Phillips head where the lines split into 3 metal lines. Use the big screwdriver to crack that open and pump the lever again til there is a little fuel that runs out by the screwhead then tighten. Now start the engine. Crack that screwhead a bit after the motor is running to get any last bit of air out so the motor runs smoothly.
You also check the oil on the same side as you bleed the fuel line (the starboard side next to the sink). You will see the dipstick and it is self explanatory. Getting the oil out to change it requires starting the motor to warm the oil (it must be very warm/almost hot), putting the pump dipstick tube in the dipstick hole and suck out the oil. About a gallon. The oil filter is on the port side.There are spares behind the back of the port settee with the tools and spare parts.
The transmission oil check is on the transmission housing behind the motor. It is a yellow cap.Check the manual but I believe oil comes to the bottom of the dipstick, it is hard to check because the oil is very clean. It uses the same oil as the engine, Rotella-T 15w-40. No need to change it, just make sure it is at the proper level.
The Nigel Calder manual will spell out aything that you need to fix/investigate and there are all the supplies and tools you should need.
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