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14 ► MB156 User Manual
While “Blank Firing” cannot always be avoided, it can be
kept to a minimum by avoiding the above conditions as
much as possible.
UNDERWATER USAGE
Underwater usage of the breaker will cause damage
to internal components. Even if the breaker is partially
submerged, water is introduced to an area between the
tool bit and piston. On the piston down cycle, the water
becomes compressed and damages adjacent compo-
nents.
Do not use underwater without supplying air to breaker.
Figure 10. Underwater Restrictions
Do not use underwater without supplying air to breaker
CAUTION
No part of the breaker may be submerged in
water. Underwater usage of the breaker will cause
internal damage to the breaker. Consult Stanley for
modications and specic warranty coverage if you
have an underwater requirement.
GREASE THE BIT
Grease should be applied to the upper end of the break-
er tool bit each time it is installed. Thereafter, the tool
should be greased at the tting to reduce wear in the
lower body and bushings of the tool. See Greasing The
Tool Bit in the sections titled Pre-Operation Procedures.
IMPORTANT
UNDERWATER USE
No part of the Stanley MB156 Breaker may be
submerged in water without rst modifying the
breaker for underwater use. Use of the breaker
underwater requires an underwater application kit
and an air compressor capable of producing 150 cfm
@ 75 psi. Underwater usage of the breaker without
the underwater kit and air compressor will cause
internal damage to the breaker. See the Accessories
section of this manual to order the underwater kit.
OPERATION