jerking/pulsing - Technical Troubleshooting discussion in Forkliftaction's forums

Crown SP3020-30:
jerking/pulsing

I am having issues with jerking in forward and reverse. This only happens if you fully open the acceleration. If you start out slow and work your way gradually to full speed then it does not happen. Or after getting to a certain speed the jerking stops. I have been throwing parts at it off an old scrap 3020-30 truck that I have and had no luck. I have changed the POT, REC 3 & 4, TRANSISTOR, TRACTION CONTROL CARD, and CAPACITORS, but still have the same issue.

Any advice on where to go next?

Posted 16 Mar 2022 02:35
Discussion started by Busch
United States

Never assume, assumptions are the mother of all ****ups. -Busch-

Post a Reply Report this post

Post your Reply

Forkliftaction.com accepts no responsibility for forum content and requires forum participants to adhere to the rules. Click here for more information.

Having trouble using the Discussion Forums? Contact us for help.