Combilift CL40140LA49:
Rear wheel steering problem

I have this Machine that won't operate the rear wheel. I have figured out that one of the sensors is not getting power but I'm having a hard time understanding what's supposed to power it. There's a lot of wiring there and I don't totally understand it.
  • Posted 1 Apr 2018 04:55
  • Modified 1 Apr 2018 05:08 by poster
  • Discussion started by matt_l
  • California, United States
Showing items 1 - 4 of 4 results.
You have to Check the electronic circuit or rear wheel proximity switches.
  • Posted 3 Oct 2019 21:09
  • Reply by James_Smith
  • American Samoa
Check the rear proximity switches and don't press the brake pedal when go to yhe sideward mode.
  • Posted 4 Nov 2018 03:09
  • Reply by Aksoy
  • Turkey
Any updates on this issue? I am having a similar issue with a C6000. The rear wheel will not respond to input from the directional switch. The front out rigger wheels respond normally, (90 degree or 0 degrees depending on the placement of the switch). The relays all seem to be ok. I did notice that if I unplug the steering solenoid under the operator compartment, that I lose functionality to the front wheels and gain function back in the rear.
Now... if I drive the machine normal, I do have steering abilities, This issue seems to only be associated with the directional control switch. I did reach out to Combilift today but haven't been given much insight yet.
  • Posted 16 Oct 2018 08:11
  • Reply by Gasass6383
  • Iowa, United States
Bob Patten
bobpatten95@gmail.com
first verify that it is actually bad, check the spacing (clearance) between the sensor and its trip point. Also you can use a screwdriver or some other metallic magnetic condutive tool to put against the sensor (orange/yellow) end and insure it is actually functional or not. if it is working it should light up the small led lights located around the end of it where the cable connects to it.
if they do not light up then you should trace the cable back to where it connects into the main control circuit and check the circuit there. You can disconnect it and check it at the connections there to verify if the sensor is actually bad. If it checks good continuity when triggering it then your problem is somewhere else before that point in the circuit.
back probing circuits can be a pain on these units so having a service manual and appropriate schematics are very helpful.

First check the fuses on the panel on the operator control panel and make sure they are all good. Don't assume by looking at them that they are ok, use a vom and physically check them.

you'll need an electrical schematic for this unit before you can trace and find the problem responsible for the power loss. Most functions are powered and/or controlled through relays on these units.
  • Posted 29 Apr 2018 02:49
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com

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