Premier PD500 - Performance Troubleshooting

18
PERFORMANCE TROUBLESHOOTING
DRIVER-BREAKER
PROBLEM
POSSIBLE CAUSE
SOLUTION
The driver-breaker fails to
strike
The driver head/breaking chisel is
jammed
Inspect and replace worn parts
Insufficient hydraulic oil
Supplement the hydraulic oil
Oil temperature is too low
The oil temperature should be at least 30
degrees Celsius
Improper main valve operation
Inspect the operation of the breaking
button in the driving cab
The internal pressure of the back head is
too low
Inspect the Nitrogen pressure
There is hydraulic oil leakage in the cap
chamber of the back head
Replace the sealing elements
Poor working performance of the
hydraulic oil
Immediately contact the excavator
manufacturer
The striking frequency is
normal at first, but becomes
irregular with use
Oil temperature rise, caused by oil
shortage
Supplement the hydraulic oil
Excessively high pressure in the back
head
Inspect the gas pressure
The lowering pressure of the attachment
is insufficient
Inspect the boom and arm of the
excavator
The driver head/breaking chisel is
excessively worn
Remove the part and make inspections,
replacing if necessary
The hydraulic oil pump is in poor
performance
Have the oil pipeline inspected by the
excavator manufacturer
Weak striking force
The gas pressure in the back head is
relatively low
Inspect the gas pressure
Low striking frequency
The gas pressure is too high
Inspect the gas pressure
The lowering pressure of the attachment
is insufficient
Inspect the boom and arm of the
excavator
The working pressure is too high
Inspect the set pressure
Poor working performance of the
hydraulic oil
Have the oil pipeline inspected by the
excavator manufacturer
The oil temperature rises too
fast
The heat dispersion of the excavator is
not good; the hydraulic pump is under
premature abrasion and the pipeline is
blocked
Change the settings of the attachment;
inspect or replace the hydraulic pump
The hydraulic oil is emulsified
The oil is mixed with water
Replace the hydraulic oil immediately
The engine speed is reduced
sharply
The output power of the engine is
insufficient
Lower the pressure in the back head
The engine performance is downgraded
Lower the position of the throttle; require
the excavator manufacturer to make an
inspection
The oil temperature is too low
Preheat before operation