1975 oil leaking into the alternator

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1975 oil leaking into the alternator

750 hondaman
I have a cb750 K 1975 Honda and at on time I think I might have put too much oil in the side tank. For a little while I didn't notice anything but then it stalled on me. When taking off the alternator cover oil poured out. I then checked my oil level and it was too high so I drained it to a normal level. I ended up replacing the oil seal around the crank and found that the oil leak didn't go away. After sometime I finally found that the oil was coming from an open area in the motor housing under the large gear for the starter. I do not know  where this leads to. I have removed the oil pan and the pump. I don't know where to go from here. I can check the pump and the scavenger side but will this stop the oil pouring into the alternator? If anyone has any experience with this problem please help me out. The 3 oil rings which mount the pump to the lower case were kind of flattened. Would a leak in the oil pump route pressure and oil into the alternator galley? Please help.
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Re: 1975 oil leaking into the alternator

TOOLS1
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Overfilling the tank will not affect anything. It will just make it easier for the oil to leak out the vent and fill cap. The engine is a dry sump, so it will only have a little oil in it. Also it is common for some oil to be in the alternator cover. Oil is needed to lube the starter drive.
TOOLS  
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: 1975 oil leaking into the alternator

Re-run
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In reply to this post by 750 hondaman
By "pour out" how much oil are we talking about? I mean a little trickle is no big deal. If you got a cup of oil out, I'd call that odd.
The ride IS the adventure. The destination is just to get gas!
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Re: 1975 oil leaking into the alternator

750 hondaman
In reply to this post by TOOLS1
So there should be oil in the alternator? hmmm I drilled a small hole in the case for it to drain out but I can easily plug it. What tells the pump to stop feeding oil to the alternator galley? It seemed as if the pump filter area was a little clogged so I cleaned it. In the manual it stated something about a valve in the pump which regulates the amount of oil to be dispersed. If the valve was held open, the pump would constantly feed oil to the case. I'm wondering if that might be the situation I have. I started the motor while the alternator case was off, plugging up the feed hole they have at the top which is closed by a plug and I noticed oil spitting from that lower galley into the alternator. I didn't know that there would be any oil at all in there. There was probably a cup of oil that came out of the alternator cover when I removed it originally. It is causing the motor to lose the charge in the battery. The original problem I thought was that it had about an inch more on the oil stick then it should of had. When I removed the oil pan, there was about a cup or 2 in the pan so that seemed normal. Or is it not? Maybe I should look more into that valve sticking open and constantly feeding pressure to the case? Thanks for your information. I greatly appreciate it.
1975 CB750K been riding it since 1977. 33000 original miles.
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Re: 1975 oil leaking into the alternator

750 hondaman
In reply to this post by Re-run
Yeah there was about a cup that came out of the alt cover. What tells the oil to stop filling the alternator cover? That's where I'm stumped. Does it have to fill to the galley opening and return back to the oil pan? I think that is a bad design regardless unless I have pump leakage from the o rings which mount the pump or the filter being a little clogged. Or maybe the valve that I mentioned in the other reply to this post. Thanks for your help.  Its causing the battery lose the charge. I think. Battery is new. Ill look more into the valve inside the pump assembly for now. Thanks again for your input.
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Re: 1975 oil leaking into the alternator

TOOLS1
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That is exactly what it does. Drain back into the pan through the galley. As for something draining your battery, it is very unlikely in the alternator. The alternators on the SOHC engines are bullet proof. I have never heard of one going bad. It is most likely in the wiring, or the regulator.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: 1975 oil leaking into the alternator

78cb750
In reply to this post by 750 hondaman
   Hi, did you ever figure out the problem I am having the same issue
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Re: 1975 oil leaking into the alternator

shinyribs
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I'm late to the party....but the oil actually helps cool the stator. Lots of bikes use the oil to do this.