Disassembly - Craftsman 9-19905 - 1/2dr 1/4npt 500ft/lb Sq Dr Impact Wrench Owner's Manual

DISASSEMBLY
NOTICE: Numbers in paren-
theses in the following instruc-
tons are part illustration num-
bers found on pages 17-19.
General Instructions
1. Do not disassemble the tool any
further than necessary to re-
place or repair damaged parts.
2. Whenever grasping a tool or
part in a vise, always use lea-
ther-covered vise jaws to pro-
tect the surface of the part and
help prevent distortion. This is
particularly true of threaded
members and housings.
NOTICE: Always use lea-
ther-covered vise jaws when
clamping the handle in a vise.
Leather will conform to the
shape of the handle and allow
the tool to be held securely. To
prevent damage to the exhaust
diffuser, never clamp only the
bottom of the handle.
3. Do not disassemble the tool
unless you have a complete set
of new gaskets and O-rings for
replacement.
Disassembly of the Impact
Wrench
1. Clamp the handle of the impact
wrench in a vise with leather-
covered jaws with the square
driver positioned horizontally.
NOTICE: Avoid excessive
clamping pressure which can
damage the Housing and can
cause difficulty when removing
the parts.
2. Unscrew and remove the four
Hammer Case Screws (11).
3. While lightly tapping on the end
of the Anvil (8) with a plastic
hammer, lift off the Hammer
Case (15) and Hammer Case
Gasket (18).
NOTICE: The Front End Plate
(2) might come off during the
removal of the Hammer Case.
Make sure that it does not drop
on the floor or strike a hard or
metallic surface since it might
be damaged.
4. Grasp the Hammer Frame (12)
and carefully lift off the entire
impact mechanism, making cer-
tain not to drop the two Ham-
mer Pins (13).
Disassembly of the Impact
Mechanism
1. Set the mechanism, driver end
up, on the workbench.
NOTICE: Note the twin ham-
mers within the Hammer
Frame. These are identical, but
must be placed in the Hammer
Frame in a certain relationship.
Using a felt-tipped pen, mark
the top "Tt" hammer and the
bottom hammer "Bt" with the
arrows pointing upward. Mark
both Hammers on the same
end.
2. With the mechanism sitting up-
right on the workbench, slowly
rotate the Anvil in a clockwise
direction until it comes up solid.