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Showing results for tags 'crankcase breather'.
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I have an 83 Venture(stock, not a Royale), and I have a small coolant leak. It has been very minor and originally only would be noticeable over the winter - I would keep an oil pan under the bike with a couple of paper towels and they would be damp by spring. Last summer it started to leave a drop or two overnight - that is when I started looking. BTW - I had rebuilt the water pump and replaced all the hoses a couple of years ago, so it is not the water pump or related O-rings or fittings. Over this past winter, it was worse – I lost what was in the overflow reservoir plus a little more. It appears to be coming from the front side of the crankcase breather box (I assume that is what that cigar-shaped assembly that sits between the cylinders is). Over a period of several days, the small hollow depression on the front side of the block, visible from the left side, will slowly accumulate green antifreeze (only when the bike is sitting on the big stand. When leaning on the kickstand, it runs down the left side, one drop at a time). I have checked all the lines coming out the top of that box and none have any residue or liquid at the fittings or clamps. The only conclusion I have been able to come to is one of the two gaskets leaks when it cools off. If it leaks when it's hot, it is so slow that it is burning off before you can see it. Does anyone have any experience with this? Can the bolts be retorqued? If so, what is the correct torque (haven't been able to find it in the manual). What would be involved in replacing the gaskets? Can it even be done without removing the carbs, or more? Besides the couple of hose fittings, there is a banjo fitting with two chrome tubes running to the front and back cylinder housings - I assume those are coolant lines, but not sure - is there a write-up on this site that explains what each of these lines are for? I just like to understand what I'm looking at. I did put a small socket on the bolts on the left side to see if there was any play in them, without putting too much effort into it – I fear snapping one of them off and having a real mess – but they wouldn’t budge. Since it seems to be worse when it gets cold, I even tried setting a ziplock bag of ice on the top of the assembly and after half an hour or so later, tried to tighten the bolts on the left side again. The bolt closest to the outside edge did budge just a tiny bit, but the two in the middle still did not move with the pressure I was using. The first picture shows the well about half full of coolant, and the second shows a bit of coolant just under that bolt housing to the left of the well. Thoughts?
