14 ► BR45
User Manual
PROBLEM
CAUSE
REMEDY
Tool does not run.
Power unit not functioning.
Check power unit for power flow and pressure
(7–9 GPM/26–34 LPM, 1500–2000 psi/105–
140 bar or 5–6 GPM /18–22 LPM at 1500–
2000 psi /105–140 bar.
Couplers or hoses blocked.
Remove restriction.
Pressure and return line hoses
reversed at ports.
Be sure hoses are connected to their proper
ports.
Mechanical failure of piston or
automatic valve.
Disassemble breaker and inspect for
damaged parts.
Tool does not hit effectively.
Power unit not functioning.
Check power unit for power flow and
pressure (7–9 GPM/26–34 LPM, 1500–2000
psi/105–140 bar or 5–6 GPM /18–22 LPM at
1500–2000 psi /105–140 bar. Proper flow and
pressure maintain proper tool speed.
Couplers or hoses blocked.
Remove restriction.
Low accumulator charge
(pressure hose will pulse more
than normal).
Recharge accumulator. Replace diaphragm if
charge loss continues.
Fluid too hot
(above 140 °F/60 °C).
Provide cooler to maintain proper fluid
temperature (130 °F/55 °C).
Tool operates slow.
Low GPM supply from power
unit.
Check power unit for proper flow (7–9
GPM/26–34 LPM) or 5–6 GPM /18–22 LPM.
Proper flow and pressure maintain proper tool
speed.
High back-pressure.
Check hydraulic system for excessive back-
pressure (over 200 psi/14 bar).
Couplers or hoses blocked.
Remove restriction.
Orifice plug blocked.
Remove restriction.
Fluid too hot
(above 140 °F/60 °C) or too cold
(below 60 °F/16 °C).
Check power unit for proper fluid temperature.
Bypass cooler to warm the fluid or provide
cooler to maintain proper temperature.
Relief valve set too low.
Adjust relief valve to 2100–2250 psi/145–155
bar.
Tool gets hot.
Hot fluid going through tool.
Check power unit. Be sure flow rate is not too
high causing part of the fluid to go through the
relief valve. Provide cooler to maintain proper
fluid temperature (140 °F/60 °C max).
Check the relief valve setting.
Eliminate flow control devices.
Fluid leakage on tool bit.
Lower piston seal failure.
Replace seal.
Fluid leakage around trigger. Valve spool seal failure.
Replace seals.
TROUBLESHOOTING
