Discussion:
shuddering

Unit shudders violently upon initial driving and stopping( only intermittently- while trouble shooting the shudder will go away). at high speed its ok but still a little noisy. Ive replaced the encoder bearing and it worked for a little but then will come and go again.ive eliminated the brake from the system so its not that. definitley seems to be a magnetic problem as you can see the drive tire jump backwards at very slow speed. Any ideas?
  • Posted 9 Jun 2012 07:40
  • By mudforce
  • joined 17 Nov'09 - 5 messages
  • Alberta, Canada
Showing items 1 - 2 of 2 results.
Found faulty controller.
  • Posted 20 Dec 2013 01:26
  • By Horse
  • joined 11 Jan'11 - 38 messages
  • Wisconsin, United States
I have a unit doing the same thing. Only it does not shudder as bad as you are describing. Its always there & I can see the fluctuating amp draw in run amp draw mode. We swapped out control handles with another unit-still did the same. Removed the braking system-no change. Changed the drive motor encoder bearing-still same problem. Left it go for 6 months & now its becoming worse. We are now going to swap controllers with a known good controller & see what happens. (Our code is 33073 Control handle issue)
Did you find out what the problem was with the unit you have?
  • Posted 17 Dec 2013 06:33
  • By Horse
  • joined 11 Jan'11 - 38 messages
  • Wisconsin, United States

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

Latest job alerts …
Erie, PA, United States
Dayton, OH, United States
Upcoming industry events …
January 28-30, 2026 - Bangkok, Thailand
March 4-5, 2026 - Detroit, Michigan, United States
March 24-26, 2026 - Stuttgart, Germany
Movers & Shakers
Jett Chitanand Jett Chitanand
President EPG Americas, Ehrhardt Partner Group (EPG)
CEO, Duravant
Manager of automated solutions engineering and implementation, MHS Lift
President and CEO, Manitou Group
Upcoming industry events …
January 28-30, 2026 - Bangkok, Thailand
March 4-5, 2026 - Detroit, Michigan, United States
March 24-26, 2026 - Stuttgart, Germany
Latest job alerts …
Erie, PA, United States
Dayton, OH, United States
Fact of the week
Foundling hatches are safe, anonymous drop-off points for unwanted infants, allowing parents in crisis a way to surrender a baby safely without fear of punishment, ensuring the child is rescued and cared for. The concept started in the 12th century, was abandoned in the late 19th century, then reintroduced in 1952. It has since been adopted in many countries.