Operation - Stanley MB256 User Manual

PRE-INSTALLATION INSTRUCTIONS
BACKHOE OR EXCAVATOR SIZE
Check the Specifications section of this manual to
determine correct carrier size, hydraulic flow and
pressure requirements.
If hydraulic pressure, hydraulic back pressure,
hydraulic flow or carrier weight class are exceeded,
the tool warranty is void.
EXISTING EQUIPMENT HYDRAULICS VS.
APPLICATION ATTACHING KITS
Using existing equipment hydraulic auxiliary systems
for operating hydraulic tools could cause problems for
the hydraulic tool and the hydraulic system if not set up
properly. Do not connect to a hydraulic system without
confirming pressure and flow to the hydraulic tool.
Spare spool valves, dipper circuits, etc., are examples
of easily accessible hydraulic circuits which could cause
problems for hydraulic tool usage.
TEST THE HYDRAULIC SYSTEM
1. Have your STANLEY dealer test the carrier hydraulic
system to make sure the system is operating at the
manufacturers specified capacity and pressure
ratings.
2. Be sure the fluid in the hydraulic system is filtered
to at least 10 micro-meters. (Particles found in fluid
should not exceed 10 micro-meters in size.)
3. Check the hydraulic filter. Replace the filter if dirty or
deteriorated.
4. Have your STANLEY dealer test the circuit to which
the breaker will be connected to make sure that the
circuit is supplying the specified flow and pressure
rating for the breaker. See the Specifications section
of this manual.
PRE-OPERATION PROCEDURES
NITROGEN CHARGE
The breaker has been properly charged with nitrogen at
the factory and is ready to use.
TOOL BIT LUBRICATION
Grease the top 10 in. / 250 mm of the breaker tool
bit before installing. During operation, the tool can be
greased through the grease fitting. Grease is required.

OPERATION

Make sure the tool bit is against the piston by placing
the tool bit against the ground and then putting down
pressure on the breaker. See the illustrations on page
11.
Grease
This Area
of Bit
Figure 1. Greasing the Top of the Tool Bit
Greasing the tool bit without down pressure on the
breaker results in grease filling the space between
the piston and the tool bit. When the breaker is next
activated, the piston will strike the grease at a speed
which will pressurize the grease resulting in seal and
10 inches/250 mm
250 mm/10 in.
Tool Bit
grease zerk failure.
MB256 User Manual ◄ 9