Discussion:
speed issue

Hello,

When driving on Low speed (with fully lowered platform), no problems were observed.
When driving in Hi speed (with fully lowered platform), the left rear wheel seems to be blocked on forward. On reverse, it seems that is moving, but struggling. No issues with the left wheel.
The brake is releasing.

I checked the diodes at the hydraulic tray, seems OK. Then I have disconnected the cable of the coil of the Speed B valve, and the platform was driving on LOW speed only, no matter the position of the toggle switch, with no issues with the rear left wheel. Then I swapped the valves from the other lift I have, but nothing changed.
So, could you give some advise and what could be the problem.

Thank you in advance for your help.
  • Posted 5 Aug 2020 23:43
  • By Rosen_Bilchev
  • joined 5 Aug'20 - 2 messages
  • Bulgaria
Showing items 1 - 4 of 4 results.
Hello sir.

My 4632 is having the exact same problem 100% the way you described. my question is which valve, or valves did you have to clean, and how did you clean them.

Much appreciated.
  • Posted 29 Jun 2022 10:39
  • By Gino_Dandrea
  • joined 29 Jun'22 - 1 message
  • Ontario, Canada
That's great!
  • Posted 14 Jan 2021 07:57
  • By Scissor_God
  • joined 30 Dec'20 - 26 messages
  • California, United States
Scissor God
Shadow722@live.com 209-846-5836
Sorry for the late reply. I got it fixed. There was a metal debries in one of the valves. Got it cleaned, and no problems so far.
  • Posted 14 Jan 2021 05:24
  • By Rosen_Bilchev
  • joined 5 Aug'20 - 2 messages
  • Bulgaria
Did you get your lift fixed yet? I had this same problem and found the drive motor was broken.
  • Posted 14 Jan 2021 03:31
  • Modified 14 Jan 2021 03:34 by poster
  • By Scissor_God
  • joined 30 Dec'20 - 26 messages
  • California, United States
Scissor God
Shadow722@live.com 209-846-5836

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.

Global Industry News
edition #1237 - 3 July 2025
While innovation and new technology are evolving at what seems to be an ever-increasing pace, the need to capture the data (telemetry) from this tech, and the ability to utilise it (telematics) for efficiency and cost savings, is one area attracting more and more attention ... Continue reading
Fact of the week
The use of "hello" as a telephone greeting is attributed to Thomas Edison. He is said to have suggested it as a simpler alternative to other greetings, such as "Do I get you?" or "Are you there?".
Global Industry News
edition #1237 - 3 July 2025
While innovation and new technology are evolving at what seems to be an ever-increasing pace, the need to capture the data (telemetry) from this tech, and the ability to utilise it (telematics) for efficiency and cost savings, is one area attracting more and more attention ... Continue reading
Upcoming in the editorial calendar
WIRELESS CHARGING
Aug 2025
MANAGING MIXED FLEETS
Oct 2025