Auto Crane 3203EH, Owner'S Manual, Page: 78 / 87

9-8.0
1/27/11
3203EH
HYDRAULIC TROUBLESHOOTING CHART
PROBLEM POSSIBLE CAUSE DIAGNOSIS SOLUTION
JAMMED CARTRIDGE TRY TO MANUALLY OVERRIDE VALVE
IF UNABLE TO MOVE STEM.
CARTRIDGE IS JAMMED
REPLACE CARTRIDGE
COUNTER ‐ BALANCE SET
TOO LOW (BOOM ‐ UP &
BOOM ‐ DN )
ADJUST THE COUNTER ‐ BALANCE OUT
TO SEE IF MOVEMENT STOPS.
REFERENCE PG. 9.1 FOR PROCESS.
CONTACT AUTOCRANE FOR PROPER SETTING
OF COUNTER ‐ BALANCE. YOU MAY NEED TO
REPLACE COUTER ‐ BALANCE.
CONTAMINATE IN CARTRIDGE VALVE STICKS IN CERTAIN POSITIONS REFERENCE PG. 9 ‐ 8 FOR
CLEANING PROCEDURE
PTO NOT ENGAGED CHECK PTO ACTIVATION LIGHT
USALLY LOCATED IN CAB
ENGAGE PTO
CRANE DIVERTER VALVE
NOT ENGAGED
IF USING AUTOCRANE OUTRIGGERS,
CHECK CRANE DIVERTER VALVE
LOCATED AT THE OUTRIGGER VALVE.
ENGAGE CRANE DIVERTER VAVLE
HYDRAULIC TANK IS LOW
OR EMPLY
VISUALLY INSPECT THE HYDRAULIC
OIL LEVEL IN THE TANK
FILL TANK TO PROPER LEVEL.
VEHICLE IS NOT RUNNING VERIFY ENGINE IS RUNNING START VEHICLE
FAST IDLE NOT ACTIVATED IF VEHICLE IS MANUAL TRANSMISSION,
VERIFY FAST IDLE IS SHOWN IN THE
LCS SCREEN
ACTIVATE FAST IDLE
FILTER CLOGGED IF NEXSTAR II, CHECK LCS SCREEN. IF
NEXSTAR I, CHECK FILTER
REPLACE FILTER
OPERATION TIME CRANE OPERATION IS GENERALLY
DESIGNED FOR INTERMITTENT DUTY
(2 HOURS BEFORE OIL GETS HOT)
REDUSE USE OF CRANE, INCREASE
HYDRAULIC
TANK SIZE, OR ADD OIL COOLER
UNLOADER VALVE
OVERRIDDEN
CHECK UNLOADER VALVE AND VERIFY
THE MANUAL OVERRIDE IS NOT
ACTIVATED REF. PAGE. 9 ‐ 2.0
DEACTIVATE UNLOADER VALVE
UNDERSIZED HYDRAULIC
TANK
HYDRAULIC TANK SHOULD BE AT
LEAST 2XGPM=GALLONS.
THIS INCLUDES
ANY OTHER ACCESSORIES THAT
OPERATE FROM THE SAME TANK
THIS IS A GENERAL RULE. MANY FACTORS
THAT
ALSO AFFECT HEAT IS AMBIENT
TEMPERATURE
PRESSURE
LOSS, AND OPERATION TIME, FOR
EXAMPLE, A SMALLER TANK COULD BE USED
WITH MORE INTERMITTENT USE OR IN COLD
ENVIRONMENTS YOU CAN INCREASE TANK
SIZE, REDUSE PRESSURE LOSES OR ADD OIL
COOLER.
CRANE MOVES
UNEXPECTEDLY
NO FUNTION
OPERATES ON CRANE
ALL FUNCTIONS
OPERATE SLOWLY
EXCESSIVE HEAT
DURING OPERATION