Stanley MBF5 User Manual page 15

on the breaker to gradually warm up its internal
components.
3. When the hydraulic system and breaker are warm,
proceed with operation.
LONG TERM STORAGE
1. Remove the tool bit. Clean the tool stop and the
lower bushing. Thoroughly coat the surfaces of the
tool stop and the lower bushing with grease.
2. If hoses are attached to the breaker, install plugs
on the hose ends. If hoses are removed from the
breaker, install plugs on the hose ends and install
plugs in the breaker IN and OUT ports.
3. Store the breaker in a vertical position. Do not store
the breaker horizontally for extended periods.
OPERATING THE BREAKER
PREPARATION FOR USE
Read the Pre-Operation Procedures, page 13, before
operating a breaker. Failure to follow the preparation
instructions can result in severe damage to the breaker
and carrier and void the warranties of both.
POSITIONING THE CARRIER
BACKHOES
With the breaker tool in place on the material to be
worked, position the backhoe so the boom is halfway up
(45°) and the dipper holds the breaker almost vertical.
Lower the loader bucket until the weight is off the front
tires.
Apply down pressure.
Apply down force to the boom/dipper until the rear of
the backhoe is raised off the ground. Rear tires and
stabilizers should be off the ground so the total rear
weight of the backhoe is on the breaker tool. The breaker
is more efficient when adequate down force is applied.
OPERATION
EXCAVATORS
With the breaker tool in place on the material to be
worked, position the excavator so the dipper is at
approximately 45° and the breaker is almost vertical.
The tracks of the excavator should be in line with the
boom and the breaker.
POSITIONING THE BREAKER TOOL ON
THE WORK MATERIAL
Position the tool bit near the edge of the work material,
not in the center or far from the edge. Position the tool 6
– 18 inches (depending on the material) from the edge.
Breaking off smaller pieces of rock or concrete usually
accomplishes more than trying to break larger pieces.
On flat material or rock, the breaker should be vertical
or "curled" back slightly to direct the impact force
downward and toward the backhoe. This directs the
force back toward the edge of the work material. If the
tool is positioned in the center of the work, or too far from
the edge, the energy will be absorbed into the material
without cracking it. Do not run the breaker longer than
15 – 20 seconds. If breakout does not occur within this
Apply down force.
Break near the edge.
MBF5 User Manual ◄ 15