Faults And Remedies; Control System (Lp/Lm08 With Sv02) - Claas QUANTUM 3500 Service Parts

TIC
4.8 Faults and
remedies
4.8.1 Control system
(LP/LM08 with
SV02)
With open hydraulic system:
Tractor system pressure or
170 bar pressure build-up
with deactivated control units
With oil supply from "John
Deere tractors": Steering
"wanders"
Hydraulic motor – does not
run
Hydraulic motor – runs only
in one direction
Hydraulic motor – does not
stop
Hydraulic motor – does not
reach max. speed
Cylinder – no function
Cylinder – does not remain
pressure-tight
No function from any
cylinder
No function from cylinders or
motor
Oil heating up
External leaks
Eliminating the faults
10/04
QUANTUM
a System screw turned in
b System screw turned out
c Control spool jams
d Nozzle plugged
e Pressure valve will not close
f Insufficient electric power supply
g Pressure reducer works stiffly
h Control spool works stiffly
i Electric contact is not interrupted
k Solenoid will not switch
l Seated valve will not close
m Hydraulic motor defective
n Sealing plate, sealing nut or O-ring defective
o Block twisted, tie rods tightened too much
Circulation valve with
pressure relief valve
a b c d
1
2
3 3
1
1 Back off screw
2 Turn in screw
3 Remove and clean
4 Check electric system, operate emergency shut-off
5 Insufficient electric power supply or pump capacity too low
6 Electric contact not interrupted, remove plug
7 Replace valve block
8 Replace
9 Check tie rod tightening torque (30 Nm)
Directional control
valve
e f g h i
4 3
3
3 6
5
4 3
Hydraulics
Seated
valve
k l m n o
8
4
7
8 9
11-99