4-101
January 24, 2017
Testing and Adjustment
CLG835H
Pressure test of work hydraulic system
2. Pressure adjustment:
a. Since the steering hydraulic system and work hydraulic system for this machine share the plunger
pump, if there is problem with pressure, test whether the pressure of the plunger pump is normal
according to “Pressure Test of Working Hydraulic System” and make correct adjustment.
b. LS relief pressure of priority valve can not be adjusted.
Steering cylinder test
Temperature of test oil: 50±5°C\
122±41°F
Test items
Test method
Criterion
Commissioning
Adjust the pressure of test system to make the tested hydraulic
cylinder start without load condition and conduct full stroke
reciprocating motion for more than 3 times to bleed the air
from the hydraulic cylinder.
The hydraulic cylinder operates
smoothly without being stuck.
Pressure tight
test
Stop the tested hydraulic cylinder piston at both ends of stroke
respectively (single-acting hydraulic cylinder stopped at the
limit position of stroke), then apply 1.5 times rated pressure of
oil to the working chamber and keep for 10s.
External leakage and damaged parts
are not allowed.
Internal
leakage test
Supply oil to the working chamber of tested hydraulic cylinder,
then increase the pressure to the working pressure, measure
the oil leakage at port of small cavity for 2min.
Internal leakage
≤
0.13ml/min\
0.000034US gpm
Stroke test
Stop the tested hydraulic cylinder piston at the limit positions at
both ends of stroke respectively, then measure its stroke
length.
419mm~421mm\16.5~16.6In
P18H00113
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...