Cam Shaft oil seal
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Thread: Cam Shaft oil seal

  1. #1
    Senior Member Kerosene's Avatar
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    Cam Shaft oil seal

    Im preparing to reassemble my 72 CL350, and the cam shaft oil seal from 4 into 1 looks different than the Honda seal. I previously had this seal in the engine and it didn't leak but id like to verify that it looks correct and if you have any experience with failures of this seal? The patterned inside of the seal seems odd to me.
    Attached Thumbnails Attached Thumbnails Cam Shaft oil seal-20190913_131850_1568395432072.jpg  
    74 CB350F
    72 CL350

  2. #2
    Senior Member Boomer343's Avatar
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    Cam Shaft oil seal-dsc02886.jpg

    Honda seal on the left, 4 into 1 on the right. Both new, no lubrication. Not perfectly centred.

    Oh and if you are really curious one is a fat cam and the other a skinny ....

  3. #3
    Senior Member Kerosene's Avatar
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    Quote Originally Posted by Boomer343 View Post
    Click image for larger version. 

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    Honda seal on the left, 4 into 1 on the right. Both new, no lubrication. Not perfectly centred.

    Oh and if you are really curious one is a fat cam and the other a skinny ....
    So it looks like with mine, the inside ridge should be pushed inward, if that makes sense? It kinda looks like mine is popping out?
    74 CB350F
    72 CL350

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  5. #4
    Senior Member doode's Avatar
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    Reseat yours. Make sure the circular spring is inside

  6. #5
    Senior Member Kerosene's Avatar
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    Interesting. Correct, there's a spring but when the seal and cam shaft fully seat, that's how it looks.
    74 CB350F
    72 CL350

  7. #6
    Sensei 66Sprint's Avatar
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    Your seal appears it might be in upside down.... Sealing lip should "point" at the oil source with the spring on the "sealed" side......However, numbers and markings are usually on the "out"side......
    Last edited by 66Sprint; 09-13-2019 at 05:08 PM.
    "I have a mind like a steel trap.....Old and rusty, of antiquated design, and hard to get stuff back out of...."
    Contact info: E-mail; [email protected] Phone; 540-525-5199

  8. #7
    Senior Member Boomer343's Avatar
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    Cam Shaft oil seal-dsc02890.jpg

    4 into 1 seal installed wrong way. I don't think the OP has the seal flipped.
    LashLarue likes this.

  9. #8
    Senior Member Kerosene's Avatar
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    Quote Originally Posted by 66Sprint View Post
    Your seal appears it might be in upside down.... Sealing lip should "point" at the oil source with the spring on the "sealed" side......However, numbers and markings are usually on the "out"side......
    I dont think the seal is facing the wrong way in the housing. But I agree that the sealing lip should point inward. I think that's my issue here. When the seal is inserted into the housing as far as it'll go. And then when the cam shaft is put in place, the sealing lip pops out.
    74 CB350F
    72 CL350

  10. #9
    Sensei 66Sprint's Avatar
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    If it doesn't leak it should be fine.......
    "I have a mind like a steel trap.....Old and rusty, of antiquated design, and hard to get stuff back out of...."
    Contact info: E-mail; [email protected] Phone; 540-525-5199

  11. #10
    Senior Member Kerosene's Avatar
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    What i also noticed is the spring on the inside also pops out of place when it looks like this. Something isnt right. I want to install the seal correctly.
    74 CB350F
    72 CL350

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