Discussion:
EP20KT no hydraulics

no codes.
no hydraulics any functions (contactor no close).
any clues?
driving is ok.
  • Posted 13 Oct 2012 05:53
  • By hellokitty
  • joined 11 Mar'09 - 86 messages
  • Ontario, Canada
echo3618@hotmail.com
Showing items 1 - 6 of 6 results.
when you say no hydraulic operation do you mean for ALL functions? any lever pulled does not work?

what happens if you manually press the hydraulic contactor? the motor should run.

serial number of truck ???
  • Posted 14 Oct 2012 12:19
  • Modified 14 Oct 2012 12:20 by poster
  • By swoop223
  • joined 23 Mar'12 - 3,691 messages
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
if contactor is good then I am missing something ,how is does your measured 36v drive signal not energize it , verify that this is a viable coil drive signal signal, if it passes a bench test with 36v manually injected then the driver voltage measured at machine outputs are not viable
  • Posted 14 Oct 2012 07:33
  • By snowmonkey
  • joined 13 Oct'12 - 36 messages
  • Alberta, Canada
already took out contactor and checked.
contactor is good.
  • Posted 14 Oct 2012 06:52
  • By hellokitty
  • joined 11 Mar'09 - 86 messages
  • Ontario, Canada
echo3618@hotmail.com
if the hyd contact is recieving a drive signal (measured at both coil signal terminals) then it would appear that your coil is open or solenoid is binding , check coil continuity or isolate terminals and inject signal.
  • Posted 14 Oct 2012 06:41
  • By snowmonkey
  • joined 13 Oct'12 - 36 messages
  • Alberta, Canada
steer, drive and hydraulic contactors all have 36v.
but hyd contactor not closing.
if it is a card problem, which card (drive, logic or bridge card) is most likely defective?
no code showing, can't decide what procedure to check.
  • Posted 14 Oct 2012 04:15
  • By hellokitty
  • joined 11 Mar'09 - 86 messages
  • Ontario, Canada
echo3618@hotmail.com
how is the bsoc, is there signal voltage driveing hyd contact?
  • Posted 13 Oct 2012 08:17
  • By snowmonkey
  • joined 13 Oct'12 - 36 messages
  • Alberta, Canada

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