4-82
Testing and Adjustment
January 24, 2017
Pressure test of work hydraulic system
CLG835H
Test and adjustment procedures for working hydraulic system pressure
Steps
Process
Operation method
Piston type
pump
△
P setting
Standard pressure gauge
connector(M16X2), measuring
range: 0-6MPa(0-870psi)
LS relief valve adjusting method:
unscrew the nut, adjust with inner
hexagon spanner, turn up in
clockwise, vice versa.
Design pressure of the pistion pump
LS valve is 2.6MPa(377psi).
Main safety
valve pressure
of distribution
valve is set
Standard pressure gauge connector
(
M16X2), measuring range: 0-
40MPa(0-5800psi)
Pressure cut-off valve adjusting
method: unscrew the nut, adjust with
inner hexagon spanner, turn up in
clockwise, vice versa.
During measuring process, it needs
to repeat adjusting and measuring to
make it confirm.
Pressure value of main safety valve
is 21MPa(3045psi).
Piston type
pump cut-off
valve pressure
is set
Standard pressure gauge
connector
(
M16X2
)
, measuring
range: 0-40MPa(0-5800psi)
Tighten up cut-off valve inner
hexagon spanner .
Pressure value of pistion pump cut-
off valve is 20MPa(2900psi).
LS relief valve
pressure is set
Standard pressure gauge
connector
(
M16X2
)
, measuring
range: 0- 40MPa(0-5800psi)
Pressure value of LS relief valve is
20MPa.
Design pressure value of LS
overflow valve 16.5MPa(2392.5psi)
Pressure value of pistion pump port
is 19MPa(2755psi).
Screw tighten LS valve and cut off
valve hexagon and nut.
measure the working pump port
Connect the pressure gauge
Regulate the pressure of pistion pump LS valve
Whether the pressure
YES
the working pump port pressure
YES
NO
NO
Regulate the pressure of piston pump cut-off valve to
Whether the cut-off valve pump
YES
Set completed
NO
is normal
port pressure is normal
Regulate the pressure of piston pump cut-off valve
and LS valve to maximum,
minimum, tilt the bucket backward to limit positin,
pressure at idle without operation.
Adjust the main safety
valve pressure until
meets the standard
tilt the bucket backward to limit positin, measure
measure the working pump port pressure
Regulate the pressure of LS relief valve to minimum,
tilt the bucket backward to limit positin, measure the
working pump port pressure (or connect pressure gauge
Whether the LS relief valve
YES
NO
pressure is normal
Whether the pressure of
piston pump raise
Whether the pressure of
main safety valve is normal
with LS oil passage for testing)
YES
Summary of Contents for CLG835H
Page 2: ......
Page 4: ...Contents January 24 2017 CLG835H...
Page 6: ...1 2 General Information January 24 2017 CLG835H...
Page 38: ...1 34 Machine Inspection Table January 24 2017 CLG835H...
Page 156: ...3 2 Power Train System January 24 2017 CLG835H...
Page 214: ...3 2 Power Train System January 24 2017 CLG835H...
Page 272: ...3 60 Testing and adjustment January 24 2017 Power Train Test CLG835H...
Page 276: ...4 4 Hydraulic System January 24 2017 CLG835H...
Page 552: ...6 2 Driver s Cab System January 24 2017 CLG835H...
Page 608: ...7 2 Structure January 24 2017 CLG835H...
Page 662: ...8 4 Electrical System January 24 2017 CLG835H...
Page 677: ...8 19 January 24 2017 Structure Function Principle CLG835H Power System P18E00014...
