Huskie Tools HH100, Service Manual

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2. Moving parts
Check for any scratches or damage on the surface of the piston, cylinder sleeves, main
valve and bottom part of the piston where it strikes the tool. Significantly damaged or
scratched parts must be replaced.
3. Front cap
a. Deformed or worn shank bushings or front cap bushings must be replaced, see
Table 8 page 23.
b. A severely worn or damaged tool set pin must be replaced.
4. Replacing the front cap bushing
a. Measure shank and front cap bushings and refer to Table 8 page 23 and Table 9
page 24.
b. Remove bushing set pin and bushing spring pin using a hammer and drive pin.
c. The front cap bushing must be torch cut at three locations (at three 120
°
grooves)
if it is the only bushing to be replaced. Avoid cutting into the front cap itself,
press out the front cap bushing only if both bushings need replacement.
d. Any scratches in the front cap must be smoothed after bushing removal.
e. Install the new front cap bushing in the correct direction with part numbers on the
bushing facing the installer (away from the hammer.) Because the bushings are a
press, or interference fit, heating of the front cap and cooling of the bushing will
help installation.
f. Insert the bushing set pin and the bushing spring pin.
5. Replacing the shank bushing
Note:
Replacement of the front cap bushing is highly recommended when replacing the
shank bushing, as the front cap bushing must be removed to replace the shank
bushing.
a. Measure the shank and front cap bushing; refer to Table 8 page 23 and Table 9
page 24.
b. Remove bushing spring pin and bushing set pin for shank bushing on the front cap
using a punch and hammer.
c. Press out shank bushing from the cylinder side together with front cap bushing
using a round bar. If the shank bushing is too tight, cutting it with a torch may be
required. A worn moil or chisel can be machined flat at the working end to serve
as a press mandrel to remove the bushing.
BE CAREFUL OF HOT SURFACE. USE GLOVES TO PROTECT
AGAINST BURNS AND POSSIBLE SHARP EDGES.