MasterCraft 054-1216-4 User Manual

OPERATING INSTRUCTIONS
IMPACT WRENCH 054-1216-4
IMPACT WRENCH 054-1216-4
Driving and removing screws
When driving or removing screws, always use
the largest screwdriver bit that will properly t
into the head of the screw to prevent damage to
the screwdriver bit and the screw head. When
starting the tool, make sure you are pressing the
bit straight and rmly into the screw head. To
avoid over driving screws or damaging the screw
head or the screwdriver bit, start the tool at a slow
speed and DO NOT allow it to continue to run in
the impact mode for more than a few seconds.
Drilling
Drill bits with a 1/4” hex shank can be used in
the 1/2” square to 1/4” hex adapter. Whenever
possible, use a center punch to mark the location
of the hole to be drilled. When starting the tool,
make sure the drill bit is lightly touching the
workpiece where the hole is to be drilled. This
will ensure the drill starts in the correct location
without “wandering” as you start drilling.
Replacing carbon motor
brushes
The carbon motor brushes will wear down and
require replacing. The time intervals between
replacements will vary depending upon the
torques being achieved and the hours of use. It
is recommended that the brushes be checked
after each 10 hours of use. When the length of
the carbon brush reaches 1/4” (6.35 mm), the
brushes should be replaced.
WARNING: Unplug the tool
from the power source.
1. Use a 3/16” (4 mm) slot screwdriver and
remove one brush cap (1) (Fig. 7). Turn the
brush cap counter clockwise to remove it
from the motor housing.
2. Pull the spring & brush assembly (2) from
the brush holder (3) in the motor housing
(4).
3. Insert the new spring & brush assembly into
the motor housing.
4. Compress the spring into the brush holder
and thread the brush cap back into the
motor housing.
NOTE: Make sure the brush cap threads are
not cross-threaded. Do NOT over tighten.
5. Repeat steps 1 to 4 and replace the second
carbon brush located on the opposite side of
the motor housing.
!
g. 7
20
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MAINTENANCE

MasterCraft 054-1216-4 Specifications

General

Brand	MasterCraft
Model	054-1216-4
Category	Impact Driver
Language	English