Lovol TE Series - Maintenance Instructions; Technical Maintenance Procedures

Operating Instructions
5.
Insensitive
steering
(1) The clearance between the valve core and the valve
sleeve is too large.
(2) The clearance between the linkage shaft and the pin
is too large.
(3) The clearance between the linkage shaft and the
rotor is too large.
(4) The return spring is broken or too soft.
(1) Replacement
(2) Replacement
(3) Replacement
(4) Replacement
3.17.1.6 Hydraulic suspension system faults and troubleshooting methods
Table 3-8 Faults and Troubleshooting Methods of Hydraulic Suspension System
S/N
Fault
symptom
Failure cause
Troubleshooting methods
1
Unable to
lift
regardless
of light or
heavy load
(1) The oil filter screen is seriously
blocked.
(2) The air enters the oil suction pipe.
(3) The gear oil pump fails.
(4) The elastic pin at the outer or inner
end of the control handle shaft falls off.
(5) The swing link in the distributor falls
off.
(6) The main control valve is stuck in the
neutral or down position, or the oil return
valve is stuck in the ON position.
(7) The pin is shortened, or the lowering
valve assembly is loosened and screwed
out, so that the lowering valve cannot be
opened.
(1) Clean or replace the oil filter screen
(2) Check the pipeline connection
(3) Check, repair or replace the gear oil
pump.
(4) Reinstall the elastic pin.
(5) Open the distributor and install the swing
link.
(6) Disassemble the distributor and clean the
valves.
(7) Remove the blockages of the lowering
valve, readjust the clearance of the lowering
valve push pin or tighten the lowering valve
assembly.
2
Light load
lifting,
unable to lift
or slow
lifting under
heavy load.
(1) The air is sucked in or enters the oil
suction line.
(2) The adjusting pressure of the system
safety valve is too low.
(3) The adjusting pressure of the cylinder
safety valve is too low.
(4) The gear oil pump is seriously worn
and the pressure is insufficient.
(5) The oil cylinder sealing ring leaks.
(1) Check the oil suction line and oil filter.
(2) Adjust or replace the system safety valve.
(3) Adjust or replace the cylinder safety
valve.
(4) Repair or replace the gear oil pump
(5) Replace the cylinder seal ring
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