Landoll 7831, Operator'S Manual

Page: 33 / 36

TROUBLESHOOTING GUIDE
5-3
WINGS FOLD TOO FAST RESTRICTORS NOT PROPERLY
INSTALLED BLACK RESTRICTOR FITTINGS
SHOULD BE IN BOTH ENDS OF
FOLD CYLINDERS
TILT CYLINDER DOES NOT FULLY
EXTEND AFTER LOWERING
MACHINE INTO WORKING POSITION CIRCUIT CONTROLS IN THE
TRACTOR ARE NOT PROPERLY SET
UP CONSULT THE OPERATORS MANUAL
FOR THE TRACTOR. INCREASE
TIMER SETTING TO FULLY
STROKE THE TILT CYLINDER
WING TIP OPERATING SHALLOW WING FOLD CYLINDER NOT FULLY
EXTENDED FULLY EXTEND WING FOLD
CYLINDERS WHILE UNFOLDING
THE HSL
WING FOLD CYLINDER LEAKING
INTERNALLY REPAIR OR REPLACE THE WING
FOLD CYLINDER
TRACTOR VALVE LEAKING CONNECT CIRCUIT TO A DIFFERENT
TRACTOR SET OF QUICK
COUPLERS TO CONFIRM
GAUGE POINT CYLINDERS DO NOT
FULLY EXTEND GAUGE POINT CYLINDERS NOT
SYNCHRONIZED SYNCHRONIZE CYLINDERS BY
HOLDING HYDRAUILC CIRCUIT IN
EXTEND POSITION FOR 5 TO 10
SECONDS AFTER FULL
EXTENSION
GAUGE POINT CYLINDERS NOT
INSTALLED IN PROPER SERIES INSTALL CYLINDER IN DECREASING
DIAMETERS AS DISTANCE FROM
CENTER INCREASES
HOSES NOT PROPERLY
CONNECTED CHECK HOSE ROUTINGS AGAINST
SCHEMATICS
MACHINE WILL NOT UNFOLD (RAISE
WING FRAMES OUT OF TRANSPORT
SADDLES) TRACTOR VALVE NOT WORKING TRY A DIFFERENT TRACTOR
CIRCUIT KNOWN TO WORK
LIMIT VALVE ON HITCH SAFETY
CIRCUIT NOT CLOSING BY-PASS
CIRCUIT • CONFIRM SPRING PLUNGER TO
BE DEPRESSING LIMIT VALVE
PLUNGER WHEN FOLDED
FORWARD
• HITCH SAFETY CIRCUIT LIMIT
VALVE LEAKING
MACHINE WILL NOT TILT (REAR
UPWARD) OR FOLD TRACTOR VALVE NOT WORKING TRY A DIFFERENT TRACTOR
CIRCUIT KNOWN TO WORK
CHECK VALVE ON HITCH SAFETY
CIRCUIT NOT CLOSING, LEAKING • CLEAN CHECK VALVE
• REPLACE CHECK VALVE
MACHINE WILL NOT FOLD OR
UNFOLD (WITH WING FRAMES OUT
OF TRANSPORT SADDLES) TRACTOR VALVE NOT WORKING TRY A DIFFERENT TRACTOR
CIRCUIT KNOWN TO WORK
HOSES NOT PROPERLY
CONNECTED CHECK HOSE ROUTINGS AGAINST
SCHEMATICS
HYDRAULIC DEPTH CONTROL LIMIT
VALVE NOT WORKING HYDRAULIC HOSES NOT PROPERLY
CONNECTED CHECK HOSE ROUTINGS AGAINST
SCHEMATICS
DEPTH STOP CONTACTS LIMIT
VALVE BUT DOES NOT CLOSE OFF
FLOW • CLEAN LIMIT VALVE
• REPLACE LIMIT VALVE
MACHINE WILL RAISE BUT NOT
LOWER CHECK LIMIT VALVE AND MANIFOLD
FOR CORRECT PLUMBING
WHEEL BEARING FAILURE SEALS NOT PROPERLY INSTALLED TRIPLE LIP SEALS SHOULD BE
INSTALLED WITH LIPS POINTING
OUTWARD AWAY FROM THE HUB
PROBLEM PROBABLE CAUSE SOLUTION