Discussion:
Crown sp 3500

I'm working on a Crown SP 3500 ac drive truck. It intermittetly slows down to a crawl once or twice a week for maybe 10 seconds then goes back to normal speed. Platform is all the way lowered when this happens and moving the throttle handle doesn't effect speed. There are no height switches on this truck ,it has a height encoder. No codes are registered when the truck is moving slow. Any one have any ideas? Thanks.
  • Posted 6 Sep 2009 12:38
  • By amxjavman
  • joined 3 Sep'09 - 9 messages
  • Wisconsin, United States
Showing items 1 - 6 of 6 results.
The speed on the sp 3500 stock picker is set to 3.4 which is incredibly slow , the access code (2311) is invalid. Is there another code that could enable me to change the speed?
  • Posted 11 May 2016 22:50
  • By Manmaderae
  • joined 11 May'16 - 1 message
  • Maryland, United States
Maximum speed on the SP3500 AC Drive is 7.5MPH, you will go through alot of load wheels and drive tires at this speed...
  • Posted 28 May 2015 03:01
  • By Mercanyin
  • joined 6 Sep'14 - 23 messages
  • Arizona, United States
I work with a crown sp 3500, and I was curious as to how I can improve the speed of my truck, right now its going 7.5 mph I would like to know whats the maximum speed. thanks
  • Posted 31 May 2013 10:12
  • By charlesbarkley
  • joined 31 May'13 - 1 message
  • California, United States
when goes into crawl does it give you any tones or beeps??
  • Posted 9 Jun 2011 23:53
  • By juan_s
  • joined 31 Dec'10 - 1 message
  • Arizona, United States
Found the problem. The pot would intermittently lose.5-1.0 v while going forward for a couple of seconds, then go back to normal volts. Swapped it out and truck runs great. Thanks for the help.
  • Posted 18 Sep 2009 19:18
  • By amxjavman
  • joined 3 Sep'09 - 9 messages
  • Wisconsin, United States
Go into the SERVICE menu level 2,enter the password(2311) and go to ANALIIZER menu. Select A2.3.3 and look at the Accelerator POT voltage reading while operating the travel at full throttle. Make sure the POT isn't turning to far past it's sweep.
  • Posted 7 Sep 2009 01:27
  • By Truck_Tech
  • joined 30 Mar'07 - 152 messages
  • 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.

SMV (Konecranes) 12-1200B
Balling, Denmark
Used - Sale
SMV (Konecranes) SL37-1200A
Morgantown, Pennsylvania, United States
Used - Sale & Hire
Upcoming industry events …
December 4–7, 2025 - Goyang, Korea, Republic Of
March 10-12, 2026 - Hong Kong, Hong Kong
June 30-July 2, 2026 - Birmingham, United Kingdom
Latest job alerts …
Global Industry News
edition #1258 - 27 November 2025
In this week’s Forkliftaction News , we report on Hyster-Yale laying off staff in the US amid what it describes as “challenging market conditions”... Continue reading

PREMIUM business

Flexi® By Narrow Aisle Limited
Leading manufacturers of very narrow aisle (VNA) equipment.
Fact of the week
According to studies published in the English Journal of Medicine, the impact of daylight savings is revealed by a 24% increase in heart attacks on the Monday following the spring shift forward. When clocks move back in autumn, heart attacks drop by about 21%, suggesting that loss of sleep is an important driver.