Page 153
Speed Level Seres - Servce & Parts Manual
January 2019
Secton 9 - Troubleshootng - 3084ES Models
Problem
Possible Cause
Remedy/Solution
LEVEL, AUTO & MANUAL
No level operation
Platform is in elevated position or
is perceived to be in the elevated
position.
Elevation is monitored by a sensor
located on left-rear portion of the
scissor stack.
Use EZ-Cal to monitor platform state of elevation.
See Diagnostic chart I.D. 2a13 for elevated status
and 2e1 for platform % of elevation input. Failure of
the angle transducer will trigger a fault code.
System interlock
Check HELP messages using EZ-Cal
Level switch/s inoperative
Check level switch located in the upper control box
Directional pressure valve not
functioning
Located behind lower control box. Inspect valve for
loss of power, ground or damage.
No auto-level
operation; manual
level operates
Switch or switch wiring problem.
Located inside upper control box
Check switch and wiring
Level Sensor not calibrated
See Tilt Sensor Calibration instructions found earlier
in this section.
System Interlock
Check HELP messages using EZ-Cal
Unit will not
accurately level
platform
Unit on too extreme an angle
Relocate unit to more level ground
Level valve sticking
Inspect/replace valves located behind lower control
box
Excessive weight on platform
Reduce weight to 1500 lbs max (680Kg)
Pressure relief valve out of
adjustment
Set steering relief valve SV-2 to 2000 PSI (138 bar)
Tilt sensor not calibrated or not
calibrated properly
See Tilt Sensor Calibration instructions found earlier
in this section.
Level cylinder valves wired
incorrectly
Refer to schematic diagram for correct wiring.
Level cylinder hoses connected
incorrectly
See Hydraulic section for hose routing detail
Will not stay level;
drifts down
Counterbalance valve adjustment or
failure
Located on the outrigger cylinder, not adjustable. If
valve is suspect it must be replaced
Failure of cylinder internal seals
Inspect and repair as necessary
