« previous next »
Pages: [1]   Go Down

Author Topic: 73' 750/four K1 trying to track down too much oil on chain (leak)  (Read 820 times)

0 Members and 2 Guests are viewing this topic.

Offline j4porter

  • Full Member
  • *
  • Posts: 4
73' 750/four K1 trying to track down too much oil on chain (leak)
« on: July 02, 2019, 11:42:15 AM »
I have replaced the countershaft seal, plugged the chain oiler port with aftermarket metal plug and still have too much oil on the chain. Throwing oil onto left side of rear tire and creeping around. ie. left turns are sketchy. I've been through four shiftcase gaskets now and still haven't been able find it. Not to mention that when the covers are off and looking at the front sprocket, everything is dry, no excess visible oil anywhere. Has anyone been down this road? getting tired of draining and burning through $10 gaskets. Thanks.
Logged

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 19,807
  • Saver of unloved motorcycles.
Re: 73' 750/four K1 trying to track down too much oil on chain (leak)
« Reply #1 on: July 02, 2019, 12:16:30 PM »
 Have you ran it (carefully) in gear and out of gear on the center stand with the cover off? 
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline 1976cb750f836

  • Hot Shot
  • ***
  • Posts: 419
  • 76 cb750f, 836, 78 wheels
Re: 73' 750/four K1 trying to track down too much oil on chain (leak)
« Reply #2 on: July 02, 2019, 12:17:45 PM »
Remove sprocket cover, clean reasonably well, gunk and brush and hose off. Leave cover off, wear boots, be carefull not to get foot in their. Start riding until u can see where the oil is coming from!
Logged

Offline seanbarney41

  • not really that much younger than an
  • Really Old Timer ...
  • *******
  • Posts: 10,800
Re: 73' 750/four K1 trying to track down too much oil on chain (leak)
« Reply #3 on: July 02, 2019, 01:10:22 PM »
Crankcase breather hose?
Logged
If it works good, it looks good...

Offline seanbarney41

  • not really that much younger than an
  • Really Old Timer ...
  • *******
  • Posts: 10,800
Re: 73' 750/four K1 trying to track down too much oil on chain (leak)
« Reply #4 on: July 02, 2019, 01:11:00 PM »
Oil line or vent hose on the back of oil tank?
Logged
If it works good, it looks good...

Offline seanbarney41

  • not really that much younger than an
  • Really Old Timer ...
  • *******
  • Posts: 10,800
Re: 73' 750/four K1 trying to track down too much oil on chain (leak)
« Reply #5 on: July 02, 2019, 01:11:20 PM »
Oil line or vent hose on the back of oil tank?
Logged
If it works good, it looks good...

Offline j4porter

  • Full Member
  • *
  • Posts: 4
Re: 73' 750/four K1 trying to track down too much oil on chain (leak)
« Reply #6 on: July 02, 2019, 04:10:00 PM »
It's not the breather tube as I've eliminated that option with a catch can temporarily. I will definitely try opening up the cover and running it. Should I expect a mess of oil all over due to shift cover being off? TIA.
Logged

Offline BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,803
  • 1969 cb750
Re: 73' 750/four K1 trying to track down too much oil on chain (leak)
« Reply #7 on: July 03, 2019, 04:38:45 AM »
Only remove the sprocket cover, if you want to run it. Have you replaced the shifter seal and checked the neutral switch?
Logged

Offline 1976cb750f836

  • Hot Shot
  • ***
  • Posts: 419
  • 76 cb750f, 836, 78 wheels
Re: 73' 750/four K1 trying to track down too much oil on chain (leak)
« Reply #8 on: July 03, 2019, 06:59:15 AM »
Just the sprocket cover, if u wiggle it just right it will come out without removing the front cover.
Logged

Offline j4porter

  • Full Member
  • *
  • Posts: 4
Re: 73' 750/four K1 trying to track down too much oil on chain (leak)
« Reply #9 on: July 03, 2019, 11:27:20 AM »
Ahhhh yes, just the sprocket cover. never been able to get just that off but will try the right wiggle again. I have not looked at the neutral switch, I will do so as well.  Thanks guys!!
Logged

Offline j4porter

  • Full Member
  • *
  • Posts: 4
Re: 73' 750/four K1 trying to track down too much oil on chain (leak)
« Reply #10 on: July 08, 2019, 11:18:48 AM »
First off, Thank you guys so much for the info!! Problem solved! The most helpful suggestion was running it with the sprocket cover off and just simply looking for the oil. WHICH was not the oiler or the seal...... Hairline crack in the case due to a loose or broken chain at some point that slapped the case. A little bit of waterweld/alumiweld over the crack and whalaa! no more oil!
Logged
Pages: [1]   Go Up
« previous next »