4-233
January 24, 2017
Fault Diagnosis and Troubleshooting
CLG835H
Common troubleshooting for brake system
Fault Diagnosis and Troubleshooting
Common troubleshooting for brake system
S/N
Fault features
Reason
Troubleshooting methods
1
Insufficient foot
braking force
1. Air in brake line
1. Bleed the brake line
2. Brake valve fault
2. Check the brake valve and measure the
pressure at port BR1, BR2
3. Pump failure
3. Check the pump
4. Leakage in brake line
4. Check the brake line
5. Accumulator damaged
5. Check the pressure of the accumulator
6. Wheel brake friction plate worn to limit
6. Replace the friction plate
2
Incapable of put-
ting into gear
7. Brake valve fault
1. Check the brake valve and measure the
pressure at B3 port
8. Parking brake cylinder leakage
2. Check the pressure switch under the
accumulator BR3
3
No normal release
of parking brake
1. Brake valve fault
1. Check the brake valve and measure the
pressure at port BR3
2. Parking brake cylinder leakage
2. Replace cylinder oil seal parts
4
Insufficient parking
braking force
1. Large clearance between brake drum and
brake shoe
1. Readjust the clearance according to the
requirements of use
2. Oil on brake shoe
2. Clean up brake shoe
5
Accumulator
doesn't work
1. Air valve leakage
1. Check air valve, and supplement nitrogen
2. Diaphragm is damaged resulting in nitro-
gen leakage
2. Replace the accumulator
6
No inching braking 1. Brake valve fault
1. Check the pressure at port BR1, BR2
7
Service or emer-
gency brake low
pressure alarm light
comes on
1. Insufficient system oil pressure in a short
period of time for machine starting
1. Please wait
2. The machine has system failure and oil
pressure drop during operation
2. Stop the machine for inspection
3. Air leakage in accumulator
3. Check the pressure of the accumulator
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...