Mec 3072ES - EZ-Cal Outrigger Test Mode

October 2008 "3072ES / 3772ES / 3772ES HD" Service & Parts Manual
Page 4-18
EZ-CAL OUTRIGGER TEST MODE
The GP400 provides a program that will allow the technician to test the individual components within
each outrigger leg, one leg at a time.
1. Plug in the EZ-cal tool and go to DIAGNOSTICS / SYSTEM / OUTRIGGERS / O/R TEST - NO.
2. Press the up arrow and ENTER and the display will read 2 =EXTEND FL.
3. Operate the outrigger switch in upper control box.
• Only the front left outrigger leg will extend.
• Once the leg touches down the function should automatically stop extending.
The extending
leg indicates an operational extend valve in that leg.
• The automatic stop indicates an operational pressureswitch. If the pressure switch was not
functional the outrigger leg would continue to extend and lift the machine until it reached the
end of its stroke.
• After the leg automatically stops the EZ-cal display will momentarily read 3=FL EXTENDED.
The display will then change to 4=RETRACT FL.
4. Operate the outrigger switch to retract outriggers.
• The front left outrigger leg should fully retract and stop. The retracting leg indicates an opera-
tional retract valve in that leg.
• If the mechanical switch inthat leg is not operational the EZ-cal will display
CHECK SWITCHES.
5. Continue on the sequence through the other three outrigger legs. If all legs extend and retract
properly through the sequence the display will read EVERYTHING OK.