Mec Speed Level 2684 RT Service And Parts Manual page 175

No auto-level Switch or switch wiring problem.
operation; manual level Located inside upper control box
operates
Level Sensor not calibrated
System Interlock
Unit will not accurately Unit on too extreme an angle
level platform
Level valve sticking
Excessive weight on platform
Pressure relief valve out of adjustment
Tilt sensor not calibrated or not calibrated
properly
Level cylinder valves wired incorrectly
Level cylinder hoses connected incorrectly See Hydraulic section for hose routing detail
Will not stay level; Counterbalance valve adjustment or failure Located on the outrigger cylinder, not adjustable. If valve is
drifts down
Failure of cylinder internal seals
"3084 Speed Level™ Sigma Lift" Service and Parts Manual
T - 3 0 8 4 E S
R O U B L E S H O O T I N G
Check switch and wiring
See Tilt Sensor Calibration instructions found earlier in this
section.
Check HELP messages using EZ-Cal
Relocate unit to more level ground
Inspect/replace valves located behind lower control box
Reduce weight to 1500 lbs max (680Kg)
Set steering relief valve SV-2 to 2000 PSI (138 bar)
See Tilt Sensor Calibration instructions found earlier in this
section.
Refer to schematic diagram for correct wiring.
suspect it must be replaced
Inspect and repair as necessary
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M O D E L R O U B L E S H O O T I N G
C
H A R T
November 2009
Page 4b-33