Replacing Mast Seals

  • jc4949
  • Hawaii, United States
  • Posted 5 Jun 2008 06:36 AM
My forklift has twin masts and the left seal at the top is leaking whenever I use the forklift. Serial # 2MC950. The questions I have are:
Should I replace both left and right mast seals at one time or just the bad left one?
I was told this is a 2-3 hour repair but everyone in my area are too busy or not interested in doing this job. Can a backyard mechanic like me replace these myself? Are there any special tools need to do this. I can get the seal kits from my local CAT dealer.
It looks easy enough to unbolt the top crossmember, block it, and undo the roller chains. When I bolt everything back do these need to be torqued to a certain amount?
Any help would be greatly appreciated. Thanks, James(Maui, Hawaii) (808)572-4698

Enjoy restoring old woodworking machinery
Showing items 1 - 4 of 4 results.
  • paul_z
  • Indiana, United States
  • Posted 15 Aug 2011 09:54 AM
Did you get the job done? Any advice for an owner with a general vehicle mechanic to get the work done?
Thanks,
Paul
  • Posted 15 Aug 2011 11:41 PM
my little advise for you is to replaced both side,bcus i have been into same *** before with a customer, i got the right one replaced but after 2weeks the other side develop [url removed] is better to make hay when the sun shine
  • paul_z
  • Indiana, United States
  • Posted 16 Aug 2011 07:04 AM
Did you have trouble getting the seals over threaded parts of the shaft? If so, how did you do it without damaging the seal?
Thanks,
Paul
  • Posted 16 Aug 2011 10:22 AM
Is there truly a shortage of forklift mechanics in Hawaii? I should get on the next plane! Seriously though, I wouldn't reccomend trying this repair yourself if you don't have experience with this type of work for safety reasons, but the technical aspect of replacing the seals on a lift cylinder is usually not that challenging. Also I would recommend replacing the seals on both cylinders since its not much more work than doing just the leaky one. Changing the hydraulic oil & filter whenyour done would be a good idea too.

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