Crown 35SCTT:
will stop moving

i have to start by saying that i think that this has been discussed before. i just want to clarify. i have a crown 35sCTT serial number 1a163861 it will work until you turn the wheels to a certain point and will loose all power and you have to turn off the machine and set the wheels straight to get it to move again. i also want to point out that i vary mechanically inclined but know nothing of lift truck repair and would like to do the task my self if possible.
  • Posted 11 Aug 2016 03:47
  • Discussion started by michel_h
  • Michigan, United States
Showing items 1 - 4 of 4 results.
If line contactor drops out and truck shuts down on full turn..... you may have a battery issue. Check batt voltage as you drive truck. In a tight turn inside motor turns opposite of outside motor. Check w/ truck jacked up and on blocks. If only one motor is driving in tight turn.... amperage is high and if batt is bad..... line contactor doesn't have voltage to hold in.
  • Posted 20 Aug 2016 10:10
  • Reply by oldmanforklift
  • Arizona, United States
thanks and i will give it a try! and it is in both directions it seems to be when you turn the wheel to say make a 90" turn it will loses all power and will have to be restart! and at times when you push on the peddle some times you wont here the contacts hit/connect if that info will help at all! thnks
  • Posted 12 Aug 2016 01:36
  • Reply by michel_h
  • Michigan, United States
in addition to edwardt's advise this might help some

here is a trick you can do that will help with the motor circuit checking, its quick and will let you know right away if a motor circuit is working ok when turning

- get some blocks small enough but stable and strong enough to put under the front mast legs and tilt forward onto them to lift the drive wheels up off the floor.
- then get on the truck and drive it in both directions while turning the steering and take note of what each drive motor is doing while doing this test.

In straight forward and reverse direction both wheels should be turning in the same manner at the same speed during acceleration and normal driving.
when you turn left the left wheel should start slowing down at certain points and come to a complete stop when at almost full left turn and it may even reverse direction at full left turn.

do the same thing turning the steering in the right side direction and the right motor should do the same thing.

if there is any problems with either motor you will see it and then be able to determine which circuit to test for either a bad motor, bad cables or a bad contactor.

Keep in mind since this is a dual motor setup there will be 2 sets of forward and 2 sets of reverse contactors so check them carefully during the operation also, they should be located just behind your feet behind that panel.
  • Posted 11 Aug 2016 21:40
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
first we need to know if it is the same in both directions, if so, you most likely have worn out the brushes in a drive motor. if it only happens in 1 direction, then it can most likely be the contactors.
what is happening is that like a car with a differential, the inside tire in a turn must turn less RPM than the outside tire, this is done by cutting off power to the inside wheel, if the outside motor current is not good, there will be no drive at that point.
  • Posted 11 Aug 2016 10:55
  • Reply by edward_t
  • South Carolina, United States
"it's not rocket surgery"

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