`81 185s Rebuild - Honda ATV Forum
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post #1 of 12 (permalink) Old 03-24-2019, 12:41 PM Thread Starter
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`81 185s Rebuild

Folks can you explain how the cam gets oil to lubricate? Rebuilt mine ran fine for a couple days, then locked up. Lucky for me the cam locked up on the carrier bearing...opposite the cam gear. Not sure if I have the "o" rings on the right stud or not. Any help there would be appreciated. Also should I clean the oil pump rotor? Thanks
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post #2 of 12 (permalink) Old 03-24-2019, 01:54 PM
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oil gets to the top through the engine studs. go to partzilla, have a look at the cylinder fich, and head fich, then you can see where everything fits/goes together :-). has this ever been sunk ?. any rtv sealant ever been used in place of hondabond or yamhabond ?, if so ?, then my guess is the rtv sealant has clogged up the oil passages in the cylinder, head, oil pump.
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post #3 of 12 (permalink) Old 03-24-2019, 02:13 PM Thread Starter
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I have looked at those diagrams and believe I have everything right. I`ll go thru it again and check the pump. Will I have to pull the studs to see if it is plugged? Is there one specific stud that transfers oil or ?
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post #4 of 12 (permalink) Old 03-24-2019, 05:55 PM
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I have looked at those diagrams and believe I have everything right. I`ll go thru it again and check the pump. Will I have to pull the studs to see if it is plugged? Is there one specific stud that transfers oil or ?
the stud that has the oil ring on it, is where your oil comes up. no you do not have to remove the studs. I just take my air compressor, and blow air down each stud to check to see if they are clear ?. anywhere there is an o-ring on the top end ?, thats where oil flows. the head, at the cam end, see those tiny holes resting down in the journal ?, thats where oil comes out of, check to see if they are clogged ?.

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post #5 of 12 (permalink) Old 03-31-2019, 08:36 PM Thread Starter
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Ok..tore in to right side case to check pump and there is a lot of aluminum shavings in the clutch hub and cap. Noticed a lot when I drained oil. Havent gotten into the pump yet but cannot see anywhere that would be creating the shavings. Cylinder, valves, cam all look good. Maybe you can tell me where to look. Never been in to the clutch...yet...could it be from the shoe? Thanks
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post #6 of 12 (permalink) Old 04-01-2019, 04:54 AM
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Ok..tore in to right side case to check pump and there is a lot of aluminum shavings in the clutch hub and cap. Noticed a lot when I drained oil. Havent gotten into the pump yet but cannot see anywhere that would be creating the shavings. Cylinder, valves, cam all look good. Maybe you can tell me where to look. Never been in to the clutch...yet...could it be from the shoe? Thanks
chances are, its from your piston or top end. hard to say , seeing how I cant see what you see.

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post #7 of 12 (permalink) Old 04-01-2019, 05:08 AM Thread Starter
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That is what I figured, but when I got in there doesn`t look bad at all. Here are a couple pics of the deposit. I would think with this much I would see where the problem was? Thanks
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post #8 of 12 (permalink) Old 04-01-2019, 05:11 AM
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That is what I figured, but when I got in there doesn`t look bad at all. Here are a couple pics of the deposit. I would think with this much I would see where the problem was? Thanks
have you seen the piston ?, seen the rocker box ?. that did not come from the clutch...lol.

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post #9 of 12 (permalink) Old 04-01-2019, 05:52 AM Thread Starter
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I tore it down to the cylinder and it look ok. I will pull the cylinder and look at the piston. I see no scraping in the rocker box either? Thought I would ask if it could be somewhere else before I did this. With this much something should be visible. Thanks ... I`ll be back
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post #10 of 12 (permalink) Old Today, 05:52 AM Thread Starter
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Just to catch up on this....I had used cork gasket on cylinder...cork plugged oil passage...cam seized up. Cleaned ports, replaced gasket, all good. Thanks again.
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