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6.13 Possible failures of the hydraulic lift linkage and guidelines for troubleshooting
6.13.1 General information
IT IS FORBIDDEN TO DISASSEMBLE THE SECTION OF THE DISTRIBUTION VALVE
AND THE INTEGRAL UNIT DURING PERIOD OF WARRANTY. OTHERWISE THE
WARRANTY FOR DISTRIBUTION VALVE SECTION AND THE INTEGRAL UNIT BE-
COMES INVALID!
ATTENTION: REPAIRMENT OF EHS DISTRIBUTION VALVE AND EHS DISTRIBUTION
VALVE SECTIONS ELECTRONIC CONTROL SYSTEM SHALL BE CARRIED OUT ONLY
BY DEALERS. OTHERWISE THE WARRANTY FOR DISTRIBUTION VALVE SECTION
AND THE INTEGRAL UNIT BECOMES INVALID!
IT IS FORBIDDEN TO ROTATE THE SPOOL ABOUT ITS AXES. SUCH ROTATION CAN
RESULT IN BREAKDOWN OF THE HYDRAULIC COMPONENTS IN THE DISTRIBU-
TION VALVE SECTION!
6.13.2 Instructions for troubleshooting in HLL
Possible failures in HLL and guidelines for troubleshooting are shown in Table 6.13.
Table 6.13
Failure, external manifestation,
cause
LL hydraulic-system pressure loss (RLL can not be lifted, pressure loss or no
pressure of pressure at external outputs), overheating and/or foaming of hydraulic
Loss of pump efficiency
Air inflow in the hydraulic system
Water in HLL tank (oil became red-
white)
Lighting up of the lift indicator lo-
cated in the RLL control panel after
the lifting is completed means that
the RLL position sensor is not ad-
justed
One or more distribution valve con-
trol levers are not in neutral posi-
tion. Levers don't go back to neu-
tral position after they were taken
off from fixed operating position
Low oil level in HLL tank
Troubleshooting
oil takes place
Replace the pump
Check and tighten the suction line clamps if neces-
sary. If the failure can not be eliminated, replace
the oil suction line
Check integrity and replace if necessary suction
line hose pipe.
Check and replace if necessary O-ring under foot
pipe
Change oil
Perform the RLL position sensor adjustment ac-
cording to the table 6.12 (code 22)
Adjust lever hub on axis, ensuring their free
movement
Refill oil up to the required level
199
1523.5-0000010 OM
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Troubleshooting
