9
Trouble Shooting
Before you start locating faults, check that the oil flow from the power source is
correct and that the pressure relief valve is set correctly. Follow the instructions in
the workshop manual of the power source.
Problem
Cause
Solution
Breaker does not start, there
is
no
pressure in P-hose
Trigger mechanism does not
actuate trigger piston
correctly
Dismount top cover, and
check and adjust functioning.
Breaker does not start, there
is
pressure in P-hose
Striking piston is stuck in
cylinder
Nose part is tightened too
hard.
Seizing between cylinder and
striking piston. Polish or
replace components.
Defective Q.R. coupling
Check Q.R. coupling
Oil supply is made to T-
connection
Switch pump and tank line
Chisel falls out during
operation
Latch and pin are worn
Replace parts.
Chisel bushing is worn
Replace parts.
Wrong chisel size
Check
Breaker works irregularly
Impurities in hydraulic oil
Replace oil and oil filter
Oil level in power source too
low
Add hydraulic oil
Wrong chisel size or worn
chisel bushing
Check
Bad performance
Internal leak
Dismount valve housing and
replace O-rings.
Oil flow from the power
source is not correct for the
breaker
Check oil flow
Accumulator pressure too
low
Charge with Nitrogen.
Defective diaphragm
Replace diaphragm
Defective Q.R. coupling
Check Q.R. coupling
Return pressure too high
Check power source/hoses
Hose diameter too small
Check hoses
