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Author Topic: CB 650 Oil Leak - Should I be worried?  (Read 3751 times)

Offline VonYinzer

  • DTT SUPPORTER
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  • Posts: 18365
Re: CB 650 Oil Leak - Should I be worried?
« Reply #10 on: Feb 28, 2013, 22:25:48 »
From your pic it seems as if the leak is from the plate at the front of the pump, not the o-ring at the back (though don't feel bad, it probably needed to be changed anyhow). Is that correct?

If so, you need to pull that plate. It doesn't show it in the parts fische but its likely there's a gasket ((o-ring?) behind that plate that's bad.
Like a river that don't know where it's flowin'
I took a wrong turn and just kept goin'

Offline akasoldats

  • Posts: 35
Re: CB 650 Oil Leak - Should I be worried?
« Reply #11 on: Feb 28, 2013, 22:29:29 »
Dammit.. lol. Is there any reason I cant rtv this?
1980 CB 650 Custom

I just wanna go fast.

Offline crazypj

  • Posts: 13199
  • Split personality, I fake being smart
Re: CB 650 Oil Leak - Should I be worried?
« Reply #12 on: Feb 28, 2013, 23:41:35 »
No reason at all, if you like pushing bikes with dead engines.
Are you sure it's not leaking from the pressure switch on top?
 I had 3 fail by using 20w/50 (switch is only 4psi and mounted at highest pressure area of oil system)
 BTW, the screws come out easy with correct screwdriver
 #12 & 14 can leak, it's more likely they were the real problem?
You have to remove oil pump to change them
#13 isn't the 'O' ring under plate, I think that one is 1.5 or 2mm?
« Last Edit: Feb 28, 2013, 23:45:43 by crazypj »
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline EricPaquette

  • Posts: 2
Re: CB 650 Oil Leak - Should I be worried?
« Reply #13 on: Jun 24, 2018, 21:13:26 »
Hi AkaSoldats

Based on what you had there it seems that I have a similar problem.  It's leaking from somewhere.  Have you finally removed the cover plate and found an O-ring behind ?  I know it was last posted in 2013 but I still take a chance.  Let me know if you fix it and how.

thnx

Offline akasoldats

  • Posts: 35
Re: CB 650 Oil Leak - Should I be worried?
« Reply #14 on: Jun 25, 2018, 13:21:30 »
Hi AkaSoldats

Based on what you had there it seems that I have a similar problem.  It's leaking from somewhere.  Have you finally removed the cover plate and found an O-ring behind ?  I know it was last posted in 2013 but I still take a chance.  Let me know if you fix it and how.

thnx

Hi Eric,

I ended up changing out rings 12, 13, and 14. Originally I tried changing just 13 but I all of the rubber was so old I couldn't get a decent seal once I put everything back together. Once I replaced the other two the leak completely stopped.

Hope this helps!
1980 CB 650 Custom

I just wanna go fast.