Was out to the boat
today. Did not do everything i wanted, as I had friends out for a sail, and had limited time. Did find the following:
- noise is NOT from belts. It is farther back, in either the transmission
/ damper plate, or shaft / cutlass.
- Did loosen the stuffung box a couple turns, while motoring - enough to let frequent drips. Did not reduce the noise!
- Did not have time to disconnect the prop shaft from the trannie to see if noise stops (is in trannie). However, I also wonder if this would tell me anything, as the engine
/ trannie would not be under load, and tjhis may affect the noise.
I am beginning to wonder if the noise (sort of squealing / light screaming noise) is just normal, and i never have really noticed how loud "normal" transmission
noise is!! As I mentioned earlier, for most of this seaon, I noticed it, but thought it was just a bit of belt noise, so I didn't worry about it. I don't motor
that much, so it hasn't really been an issue. And, since the boat is currently overpropped (will fix during winter), I don't rev the engine past 2000/2200, as it will smoke unburned fuel
(and I am doing 5 1/2 - 6kts at that rpm
anyway) The noise really only becomes noticeable at higher rpms / higher shaft speeds.
I will definitely check the cutlass bearing for wear / play, when the boat is out of the water.
re: feeler gauges, I know this is the accepted way to check clearances. However, as the cutlass bearing / strut is about 2 feet from the transmission coupler, there is sufficient play in the shaft, that it is possible to move the end up/down, back and forth enough that I don't think feeler guages would work
. The shaft (with one half of the coupler) presses up cleanly to the other half A(on the trannie), usch that it is tight together, all around. I do NOT have to tighten the bolts, for example, to pull it tight together!!
Now for a stupid question (that I know has been asked before). On the km2a (or other km2) transmission dipstick, there is a fill indicator line about 1/4" form the end of the stick. I believe that is the full mark! Is this correct??? There is also a hole in the dipstick, but it's about 2" from the end, but I am pretty sure that's not the fill level, as it would be very full!! I know it only takes something like 1/4 liter/quart of oil
(don't have my manual on me), so that's why I believe it's the lower mark that inidcates full!!
I really appreciate all of the great advice!! Thanks for taking the time to help me!!