Discussion:
Jungheinrich electrical problem on hydraulics

We have a EFG 320 serial number FN314854, truck has been out on hire for 3 months in a very low use application

Had fault code 84 come up hydraulic motor would run for a couple of seconds then shut down, talked to a Junghrinrich tech that told us the sensor bearing in the motor was the cause.

Replaced that, now we have lost the fault code but the motor only spins very slowly when operating the hydraulics, does the bearing need setting up with a programmer or can anyone offer any pointers on this.

Many thanks
  • Posted 24 Jul 2014 05:34
  • Discussion started by P_E_G
  • Kent, United Kingdom
Showing items 1 - 7 of 7 results.
That is good.your wellcome
  • Posted 29 Jul 2014 02:23
  • Reply by nemanja_k
  • serbia, Serbia
Finally got the problem sorted, took over job started by a colleague, turns out the motor wires were on the wrong terminals

Swapped to right ones trucks fine again

Many thanks to Neranja and Cristian for their help
  • Posted 29 Jul 2014 00:05
  • Reply by P_E_G
  • Kent, United Kingdom
I will look again in my data and write you on your mail in profile.ok
  • Posted 26 Jul 2014 06:44
  • Reply by nemanja_k
  • serbia, Serbia
Off site until Monday, the speedsensor has 4 wires coming from it, the other 2 blue wires are the temperature sensor I assume, can I test that with the motor in the truck?

Sensor bearing supplied by TVH, SKF bearing that looked identical to the one originally fitted

So you would check the pot under the lever, check the temp sensor, if they are ok then it needs jungheinrich to test, does that sound about right?
  • Posted 25 Jul 2014 18:48
  • Reply by P_E_G
  • Kent, United Kingdom
It must to go faster when you pull first lever did you check potentiometer under the lever?Check that new speed sensor It have four wires
+12V supply
Bat negative
Chanel A
Chanel B
Chanel measurement 11.5-12v pulses 0.5V
But I think he is now ok,is it same like old one(part number)?
did you check temperature sensor in motor?if is all that ok probably it is problem in interface board and you need Pc to connect with truck and check parameters.
  • Posted 25 Jul 2014 03:54
  • Reply by nemanja_k
  • serbia, Serbia
Hi Nermanja thanks for your reply

It has three levers, when you operate any of them the motor turns very slowly, creeps in fact, does not develop enough pressure to operate any of the hydraulic functions
  • Posted 24 Jul 2014 19:25
  • Reply by P_E_G
  • Kent, United Kingdom
You dont need any special settings when you change speed sensor how I can remember.Is it forklift with three levers or with multipilot?If is with three levers look under first lever you have potentiometer for fast speed and he can be a reason,other two functions are slow normally.
  • Posted 24 Jul 2014 06:38
  • Modified 24 Jul 2014 06:39 by poster
  • Reply by nemanja_k
  • serbia, Serbia

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