May 16, 2011 · To descale the heat exchanger you must remove from the engine, remove end caps. Make up a solution of muriatic acid and water in a ratio of 3 to 1. 3 parts water to 1 part muriatic acid. I use a 5 gallon bucket to mix the solution then dip the heat exchanger in the solution, let soak till the brass is bright. 30 minutes is usually enough.
Find many great new & used options and get the best deals for Volvo Penta Heat Exchanger Aq 125 at the best online prices at eBay! Free shipping for many products!This boat also has aHeat Exchanger option (a $900 option) which keeps raw water from going into the engine for cooling. The engine is cooled by antifreeze just like in cars. The sea water goes in thru the heat exchanger to cool the antifreeze and then dumps out thru theexhaust backout to sea.
Cooling System Freshwater system capacity including heat exchanger, approx. 57 litre (15 US gal). Coolant Volvo Penta Coolant VCS and VCS Ready Mixed (yel- low colour) are based on Organic Acid Technology, OAT. Volvo Penta Coolant and Coolant Ready Mixed (green...
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