Yanmar 2GM20 F
Rear of engine.
Pressure activated bilge pump with manual bilge pump at top left. Top of fuel tank is also visible.
Front view showing 130L fuel tank.
Top front. Cluster of hoses leading off at bottom left connect to the domestic hot water calorifier.
Fuel tank, hot air extractor vent, coolant reservoir and sterling alternator charger booster.
Shore power control box.
Domestic hot water calorifier.
Close up of hoses to domestic hot water calorifier.
Shortly after delivery the engine began to lose large amounts of coolant. It was not clear where this was going.
Eventually the problem was traced to chafe. This hose rubbed against sharp edged GRP where a hole had been cut to route hoses through to the calorifier. The hose was not sufficiently protected and as the V cut deepened coolant loss accelerated.
Modifications:
Chafe protection fitted to electrical cables and hoses where necessary. August 2005
Speedseal fitted to cooling water pump April 2006.
Starter motor and alternator overhauled September 2009.
Failures/Problems:
Coolant loss August 2005.
Electrical connection to alternator May 2006.
Shaft coupling failure June 2006.
Exhaust elbow failure April 2009.
Shaft coupling failure December 2010.