![]() Seals are important to keep the lubrication in and the pumped medium out. In some applications, fluid contamination can be a big issue. Transfer oil in clean containers and avoid using dirty rags when handling funnels or replacing caps. It is just as important to make sure that the lubricating oil is kept clean as it is to ensure contaminated oil is not supplied to the pump. Once spalling occurs, small metallic particles from the bearing can enter the oil and lead to further damage. This will lead to further denting, fatigue cracks, spalling and eventually early bearing failure. When a rolling element runs over small particles, it creates dents that result in high, localized stresses on the raceway and the rolling element. Once contaminants enter the internal components of a bearing, a chain reaction starts. When handling an unpacked bearing, beware of dirt, grease or other contaminants on hands, rags and surfaces that can make their way into the pump or the raceways of the bearing. This eliminates the chance for dust particles in the air to stick to open type bearings, which typically have a rust preventive oil coating. It is highly recommended to keep the bearing in its packaging until it is ready for installation. Common bearing failure modes ContaminationĬontamination usually occurs in three forms: dust/dirt, metallic particles and fluids, such as water or chemical solutions. The things I like most are the increased range and economy the diesel gives & availibility of diesel in my cruising area of west Cork, and oh yeah as you can see spending a lot of time under the hood working on the engine.Figure 2. But I am really happy with this boat and engine setup, I am lucky that I am able to carry out all my own work as otherwise this would have have been an even costlier year had I had to pay for all this work. Now reading this post people might think that I would say outboards everytime after my experience with the Volvo D6. ![]() ![]() My first year with the boat I had to replace 1 of the hydraulic trim hoses (this was my 1st experience with Volvo prices) since that time I have carried out the following 4 new steering hoses,2nd trim hose,2 new steering rams (this year) and then to top it all off I had to replace my sump this year as corrosion had caused a pin hole.Īfter removing the engine changing the sump and refitting the engine with a new sump fitted I thought that was the end of it for a while, but no on start up I discovered I had a leak in my power steering pump, new pump ordered and fitted. supercharged / turbocharged coupled to a DPR outdrive. This brings me to my present boat which I have owned now with 4 years the boat in question is an Exalibur 8.7 mt fitted with a Volvo D6 350 hp. ![]() ![]() My experience with inboards has been with Volvos, first one I only kept for 2 seasons as I got an offer to good to refuse. I never had any problems with any of my outboards but then again I used to move the boats on fairly often ,seemingly I got off lightly with my Evinrude 90hp. Mariner 60 hp 2st ,Suziki 70hp 4st, Evinrude 90hp ficht, Evinrude 225 ficht & Suzuki 250 hp 4 st. I have owned 7 boats throughout my boating career,5 with outboard engines namely ![]()
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