Possible Failures Of The Hydraulic Lift Linkage And Guidelines For Troubleshooting; General Information; Guidelines For Troubleshooting In Hll - Belarus 1822.3 Operator's Manual

7.14 Possible failures of the hydraulic lift linkage and guidelines for trouble-
shooting

7.14.1 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 DISTRIBU-
TION VALVE SECTIONS ELECTRONIC CONTROL SYSTEM SHOULD BE CARRIED OUT
ONLY BY DEALERS. OTHERWISE THE WARRANTY FOR DISTRIBUTION VALVE SEC-
TION 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.

7.14.2 Guidelines for troubleshooting in HLL

Possible failures in HLL and guidelines for troubleshooting are shown in Table 7.14.
Table 7.14
Failure, external manifestations,
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 oil
takes place
Loss of pump efficiency
Air inflow in the hydraulic system
suction line
Water in HLL tank (oil became red-
whity)
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 neutral
position after they were taken off
from fixed operating position
Low oil level in HLL tank
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 7.12 (code 22)
Adjust lever hub on axis, ensuring their free
movement
Refill oil up to the required level
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Troubleshooting