Operation - Stanley MBF5 User Manual

Grease Fitting
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
grease zerk failure.
14 ► MBF5 User Manual

OPERATION

Always wear eye protection when installing or
SECURING THE TOOL BIT
7. The tool retainer is shipped installed in the breaker.
8. Remove the stop pin and plug.
9. Drive out the tool retainer.
10. Grease the top area of the tool bit.
11. Install the tool bit making sure the notch is aligned
with the lower body retainer pin holes.
12. Install the tool retainers.
LOW TEMPERATURE WARM-UP
PROCEDURE
1. After starting the carrier, warm-up the hydraulic
system at engine idle until hydraulic lines are warm
to the touch.
2. With the carrier at idle and the breaker suspended
in the air or with minimal down pressure, turn
Piston in down position,
pressurized by Nitrogen in
accumulator
No gap between
tool bit and piston
Tool bit pushed up
against the piston
Gap - grease will ll
this space
Tool bit NOT pushed up
against the piston
removing the tool retaining pin.