Stanley Hardware Automobile Parts BR40 User Manual

starting of the tool bit into the work surface.
5.  To start, break an opening (hole) in the center of the 

surface. After making a hole, break portions of the 

material into the original opening. For best produc-

tivity, the breaking should be done around the origi-

nal hole.
The size of the broken material will vary with the 

strength and thickness of the base material and the 

amount of any reinforcement wire or rebar.
Harder material or more reinforcing wire or rebar will 

require taking smaller bites. To determine the most 

effective bite, start with 2 in./50 mm or smaller bites.
Bites can then be gradually increased until the bro-

ken piece becomes too large, requiring increased 

time to break off the piece.
Sticking of the tool bit occurs when too large a bite is 

being taken and the tool bit hammers into the mate-

rial without the material fracturing. This causes the 

tool bit to become trapped in the surrounding mate-

rial.

If the breaker is to be used during cold weather, preheat 

the hydraulic fluid at low engine speed. When using the 

normally  recommended  fluid,  fluid  temperature  should 

be at or above 50 °F/10 °C (400 ssu/82 centistokes) be-

fore use.
Damage to the hydraulic system or breaker can result 

from use with fluid that is too viscous or thick.

The recommended hose size is .500 inch/12 mm I.D. up 

to 50 ft/15 m long and .625 inch/16 mm I.D. minimum up 

to 100 ft/30 m.

1.  using a calibrated flowmeter and pressure gauge, 

check that the hydraulic power source develops a 

flow of 4–6 gpm/15–23 lpm at 1300 psi/90 bar.

2.  Make certain the hydraulic power source is equipped 

with a relief valve set to open at 2250 psi/155 bar 

maximum.

1.  Rotate the latch on the breaker foot downward 

(pointing away from the tool).

2.  Insert the tool bit into the foot and pull the latch up to 

lock the tool bit in place.

1.  Wipe all hose couplers with a clean, lint-free cloth 

before making connections.

2.  Connect the hoses from the hydraulic power source 

to the tool fittings or quick disconnects. it is a good 

practice  to  connect  return  hoses  first  and  discon-

nect them last to minimize or avoid trapped pressure 

within the tool.

3.  observe flow indicators stamped on hose couplers 

to  ensure  that  fluid  flow  is  in  the  proper  direction. 

The female coupler on the tool hose is the inlet cou-

pler.

4.  Move the hydraulic circuit control valve to the ON 

position to operate the tool.

1.  Observe all safety precautions.
2.  Install the appropriate tool bit for the job.
3.  Place the bit firmly on the surface to be broken.
4.  Squeeze the trigger to start the breaker. Adequate 

down pressure is very important. When the tool bit 

breaks through the obstruction or becomes bound, 

release the trigger and reposition the tool bit.