Cat Lift Trucks (& Caterpillar) NPP20M:
Loss of traction error code AL09

Hi all I am having a problem with a powered pallet truck its a CAT NPP20M and the problem is that it will run for about a minute and then stop and show up an error code of AL90?
has any one came across this problem before and can give me a bit of advice.
many thanks for your help.
  • Posted 8 Mar 2014 08:06
  • Discussion started by phil_p
  • staffordshire, United Kingdom
philprice25@gmail.com
Showing items 1 - 6 of 6 results.
do you know for same dACi-TA 24/150 GB
what is AL 17 ?
  • Posted 25 Jan 2016 19:40
  • Reply by anfandrei
  • Romania, Romania
if it were brushes it would be giving a different code most likely.
Bad com? maybe but that also would be giving a different code.
There are a couple of things to look for on the motor to determine if it has a thermal sensor on it, look for 2 wires connecting to a sensor connector somewhere near the middle or pump end of the motor housing. If you don't see one there then it may be mounted outside on the housing. If you still don't see one then maybe it is a sensor in the motor compartment near the motor.

If you dont see any extra wires other than the main cables then the problem may be in the motor controller giving you an overheat code for it. Usually the controller overheat code and the motor overheat codes are different though. This one did say motor temp overheat though.
  • Posted 11 Mar 2014 11:46
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
thanks for your help
could it be brushes or bad com
has it got a thermal temp sensor on drive motor?
  • Posted 11 Mar 2014 04:02
  • Reply by phil_p
  • staffordshire, United Kingdom
ok i was thinking that but had to be sure

AL90 has to do with traction motor temp too high if i'm not mistaken

i'll do more checking but thats what i come up with
  • Posted 10 Mar 2014 06:12
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
thanks for your reply
its a Sauer Danfoss controller.
Type:dACi-TA 24/150 GB
  • Posted 10 Mar 2014 04:40
  • Reply by phil_p
  • staffordshire, United Kingdom
AL90?
this a zapi controller in this unit?
i tried looking it up in my cat program and a NPP20M does not show up.
  • Posted 8 Mar 2014 23:17
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com

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