Discussion:
All functions work except for lift

Folks, we have a Crown 35RRTT stand up electric with a lift issue. Installed new battery and all functions are working with exception of the lift. I am getting full voltage to the + side of the coil for the pump motor contactor, but it is not getting grounded by the SCM. Does anyone have a schematic for this machine or any ideas of how to go about troubleshooting. Don't know which card of the 4 in the SCM is the one for this function. Appreciate any and all help
  • Posted 13 Oct 2022 06:45
  • Modified 13 Oct 2022 06:46 by poster
  • By Ricky_Gilmore
  • joined 12 Feb'22 - 8 messages
  • Florida, United States
rgilmore
Showing items 1 - 1 of 1 results.
Not sure if this will be of much help but several years ago I was running a warehouse where we had a fleet of Order Pickers (all bought at the same time, all ran roughly the same hours).
One decided to stop raising the cab and the "advice" I got was that the battery was cooked...okay, get a new battery, install it..same issue. Advice was...Oh, it must need charging (Hmmm, brand new battery and it needs charging???) Okay, so it was charged over a 24 hour period...no change!!
3 engineers on-site, crawling over the machine, eventually discovered the lifting chains had stretched and were not making correct contact (or something like that), new chains etc fitted and all was good (including the supposedly cooked battery).
Just a thought.
  • Posted 13 Oct 2022 23:33
  • By Tat2dPete
  • joined 29 Sep'20 - 41 messages
  • Strathclyde, United Kingdom
Pete

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