Trouble Shooting - Farmi Forest Corporation CR40 Operation, Maintenance And Spare Parts Manual

TROUBLE SHOOTING

TROUBLE
CRANES WORKING
MOVEMENTS SLOW
CRANES DESCENDING
MOVEMENTS SLOW
CRANES MOVEMENTS
TOO FAST
CRANES WORKING
MOVEMENTS POWERLESS
CRANE MOVEMENTS ARE
JERKY
BOOMS DESCEND BY
THEMSELVES
CONTROL VALVE'S
SPINDLES STICKING
CR40
POSSIBLE CAUSE
PUMP IS TOO SLOW
FAULTY PUMP
LEAKS OR OBSTRUCTIONS IN OIL
LINES
OIL TOO THICK
OBSTRUCTIONS IN THE OIL LINES
CLOGGED-UP (RETURN) FILTER
OIL TOO THICK
ROTATION SPEED TOO HIGH OR
PUMP TOO BIG
INCORRECT OPERATION
NOT ENOUGH OIL
FAULTY PUMP
FAULTY RELIEF VALVE OR SHOCK
VALVES
FAULTY CONTROL VALVE
FAULTY CYLINDERS OR SEALS
AIR IN HYDRAULIC SYSTEM
NOT ENOUGH OIL
FAULTY PUMP
FAULTY CONTROL VALVE
FAULTY CYLINDERS OR HOSES
FAULTY SHOCK VALVE
VALVE'S FIXING SCREWS TOO TIGHT
VALVE NOT ON LEVEL MOUNTING
BASE
VALVE'S TIE BOLTS TOO TIGHT,
FAULTY SPINDLE
REMEDY
CHECK PUMPS ROTATING SPEED
CHANGE OR GET THE PUMP FIXED
INSPECT OIL LINES
CHANGE TO A THINNER (CORRECT) OIL
GRADE
CHECK THE LINES AND THE CHOKES
CLEAN OR RENEW FILTER
CHANGE TO A THINNER (CORRECT) OIL
GRADE
CHOOSE A CORRECT SPEED OF ROTATI-
ON AND CORRECT PUMP SIZE
LEARN TO OPEN THE CONTROL VALVE
TO A SUITABLE DEGREE
ADD OIL (AIR BLEEDING)
CHANGE OR GET THE PUMP FIXED
CHANGE THE RELIEF VALVE OR SHOCK
VALVES
CHANGE OR GET THE VALVE FIXED
CHECK THE CYLINDERS AND CHANGE
THE SEALS
CHECK OIL LEVEL, BLEED AIR FROM
SYSTEM
CHECK THERE ARE NO OBSTRUCTIONS
OR LEAKS ON THE INLET SIDE,
ADD OIL
CHECK THE PUMP AND GET IT FIXED
INSPECT THE CONTROL VALVE AND GET
IT FIXED
FIX THE LEAKAGE POINT.
CHECK CYLINDERS AND SEALS,
CHECK, CLEAN, ADJUST
CHECK SCREWS TIGHTENING TORQUE 50
Nm (5 kPm)
MOUNT THE VALVE ON A LEVEL BASE
CHECK SCREWS TIGHTENING TORQUE
27,5 Nm (2,75 kPm),
CHANGE A NEW BLOCK WITH SPINDLES
25