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Wayne
11-11-2003 19:22:15
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Re: Diesel engine troubles in reply to James, 11-11-2003 18:52:01
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The O-ring on the sleeve is because it has wet sleeves vs dry sleeves. In a wet sleeve the outer walls of the liner are used as part of the engine water jacket, so they are in contact with the coolant. As a result they use O-ring seals to seal the liner to the block to keep coolant out of the rest of the engine. On a dry type liner the block provides the walls for the water jacket and the liner just 'sets' in the hole and never actually contacts the coolant, relying instead heat transfer between the metal in the block and the metal liner for cooling. As to how much trouble it is to fix, it is really hard to say. If the engine was run alot before the leak was identified, which it probably was, then your looking at the posibility of the bearings being worn due to coolant in the oil, as well as the posibility of the block being pitted in the sealing area of the o-ring (which is often what makes them leak in the first place) making repair more expensive or in some cases impossible. As for it being hard to do, from a professional standpoint, it isn't all that hard, basically if your going that far anyway you'd just do an inframe overhaul. Otherwise by only fixing one cylinder you create weak points out of the others, one of which will be the next to cause problems. It's not all that hard, if everything is OK with the block, crank, etc and you don't have to actually pull the engine. It's when you get into it and find additional problems, be it with pits, etc in the block, wear in the crank, etc, which inevitiably happens, in my experience at least, that it becomes more difficult. My advise before you buy it would to have a local mechanic,who you can trust and who knows about machinery, take a look at it and give his opinion based on what the current owner says, and what he sees (and hears if the machine is runnable at all) I don't know how much the man is wanting for the machine, or what current rates are for mechanics in your area, but I think it would be worth your while to do it like this. Basically if you don't know enough about the machine to make an "educated purchase" your better off to spend a little money to have somebody look at it than to "buy it blind" and spend alot for a machine that's just totally beyond repair, or is worth alot less than the cost of the repairs it needs. Good luck. Wayne
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