Report this forum post

well then, what i would do is make up a gate valve hose assembly and plumb it into the main hydraulic line going from the control valve out to the mast. Once you get it connected raise the mast in the air and close off the gate valve. If you still have drift then you will know the problem is not in the control valve and is indeed in the mast cylinders.
At that point you will have to chain up the carriage and mast channel that is in the air so it will not fall. Remove the lines at the base of each cylinder and check the fitting, it should be a check valve (velocity fuse) and see if it is damaged. If you find no problems there then the cylinders will have to be removed and dissassembled and checked for damage.
You will probably find either a bad balance valve in the piston or bad packing. One of those cylinders can be bad but cause both to drift since they are tied together.

good luck
  • Posted 20 Feb 2014 22:24
  • By swoop223
  • joined 23 Mar'12 - 3,691 messages
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com

This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.

Indicates mandatory field
Movers & Shakers
Jan Zuurbier Jan Zuurbier
Global CEO, Swisslog
Board member, UKMHA
Strategic advisor, Roboteon
CEO Americas, Hai Robotics
Hangcha 80XENS
Flesherton, Ontario, Canada
New - Sale
Crown RD572513TT6860R
Braeside, Melbourne, Victoria, Australia
Hire
Latest job alerts …
Highland, IL, United States
Dallas, TX or Lexington, KY, United States
Orlando area, United States
Tacoma, WA, United States

PREMIUM business

ROYPOW
Manufacturer of lithium forklift battery solutions, the global leader in the market of lithium batteries replacing lead acid batteries.
Bobcat appoints new UK dealer Liverpool, United Kingdom

PREMIUM business

ROYPOW
Manufacturer of lithium forklift battery solutions, the global leader in the market of lithium batteries replacing lead acid batteries.
Fact of the week
Portugal was the first country to implement a nationwide, automatic electronic toll collection system. This system allows vehicles to pass through toll booths without stopping, significantly improving traffic flow on highways.