Author Topic: Leaky fork tube... CB750K4  (Read 751 times)

0 Members and 1 Guest are viewing this topic.

Offline sbparks

  • Enthusiast
  • **
  • Posts: 150
    • My Hobby...
Leaky fork tube... CB750K4
« on: September 05, 2011, 01:11:28 PM »
Guys,

 Rainy day here in upstate NY so I torn down my CB750K4 front end due to a leaky (right) fork.  Replaced the seals last summer when reassembling after a full rebuild.

 I found an ugly (large) pit in the slider chrome surface that no seal would be able to work with!  Not sure why I didn't replace originally!

 I posted in the classified, WTB Fork Tube: http://forums.sohc4.net/index.php?topic=95202.0  as I am sure I'll need a new tube.

 Will I need to replace the (new last summer) seal as well?

 Otherwise... Looking for a replacement slider tube for my CB750K4.

Thanks, Scott

Offline alfego

  • Full Member
  • *
  • Posts: 30
Re: Leaky fork tube... CB750K4
« Reply #1 on: September 05, 2011, 01:28:49 PM »
For as much work & time that goes into tearing down the forks, I have always used new fork seals and have never reused an old seal.  Don't recommend it, not worth it.

Alfego

Offline mrbreeze

  • Not your average
  • Really Old Timer ...
  • *******
  • Posts: 5,902
  • Shut up when you're talkin' to me!!
Re: Leaky fork tube... CB750K4
« Reply #2 on: September 05, 2011, 01:32:55 PM »
For as much work & time that goes into tearing down the forks, I have always used new fork seals and have never reused an old seal.  Don't recommend it, not worth it.

Alfego
+1. If you ran that seal over that pit in the fork.....I would think there was a good chance the seal got messed up. For as cheap as they are....I recommend changing it. I answered your want ad for forks....lemme know.
MEMBER # 257
Fool me once..shame on you. Fool me twice..I'm kickin' your a$$......

Offline phil71

  • Master
  • *****
  • Posts: 1,813
Re: Leaky fork tube... CB750K4
« Reply #3 on: September 05, 2011, 03:12:43 PM »
i've been very successful repairing those pits with JB weld. It's a pain in the ass, but it can be done. Gotta clean it really well, and remove the rust with a wire wheel, then build it up in stages, and sand it down. A new fork seal might have gotten torn up, but you'd see it pretty quick if it did. what really happens is that pit holds the fork oil when it's under the seal, then lets it out on the top side when it pops back up. YOu'd be amazed how much a little pit will brng back up with it over the course of a 10 minute ride. Of course, if you can find a new fork for the right price, so much the better!