Stanley Black & Decker BR67 User Manual

Tool does not run.

Power unit not functioning.

Check  power  unit  for  power  flow  and  pres-

sure (7–9 gpm/26–-34 lpm, 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  pres-

sure (7–9 gpm/26–34 lpm, 1500–2000 psi/ 

105–140 bar.

Couplers or hoses blocked.

Remove restriction.

Low accumulator charge (pres-

sure 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 tempera-

ture (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).

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 cool-

er 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.