Discussion:
Need a Doosan Expert

Doosan GC20E serial # JZ00672 6588 hrs.
This lift will loose travel now and again. We have checked all the switches, connectors and solenoids. Replaced all of the relays with no change. Does anyone have an idea or know of a service update, Thanks.
  • Posted 20 Jan 2010 07:26
  • Discussion started by garland_m
  • Virginia, United States
Work Hard and Fish Long
Showing items 1 - 5 of 5 results.
Hey Everyone,

Have checked everything suggested and all seems to check good. Have brought the lift to the shop and found that the lift looses reverse when hot, suspect the clutch pack is bad. Can someone supply the transmission check points and pressures so I can confirm our suspicions. Thanks.
  • Posted 28 Jan 2010 23:56
  • Reply by garland_m
  • Virginia, United States
I have had a same problem on the same truck it ended up being the park brake switch the switch check out fine with a meter but still for some reason time to time it would lose its connection. Its been 8 months several pms later no problems.
  • Posted 26 Jan 2010 01:32
  • Reply by ben_g
  • California, United States
Does your unit have the Operator Sensing System,with a seat switch? Try by-passing the seat switch to see if this is causing your trouble.
  • Posted 21 Jan 2010 21:51
  • Reply by Truck_Tech
  • United States
That is the problem, this can happen at any time. It may work for one month with no issues then it happens again. We have gone through every scenario you can think of and cannot duplicate the problem any certain way. It is one of those problems that if are not on site when it happens it is hard to find the cause.
  • Posted 21 Jan 2010 03:56
  • Reply by garland_m
  • Virginia, United States
do you have any sort of idea what is happening just before they loose travel? are they changing directions? from rev to forward? or forward to rev? coasting? accelerate? turning left? does it only happen 15 minutes before lunch break? can they recreate the malfunction on demand?
  • Posted 20 Jan 2010 22:01
  • Reply by edward_t
  • South Carolina, United States
"it's not rocket surgery"

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