Huskie Tools HH100, Service Manual

Page: 23 / 64

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d. Any scratches on the front cap during the cutting operation must be smoothed out
using a hand grinder.
e. Install a new shank bushing after greasing. As bushings are a press, or
interference fit, heating of the front cap or cooling of the bushing will ease
installation of the bushing.
f. Install the bushing set pin and the bushing spring pin.
6. Refinishing surface scratches (see Section 6, Page 27)
a. Cylinder and Cylinder Sleeve
Scratches on the inside surface of the cylinder should be smoothed using a flap wheel
with 240 grit and finish with 360 grit.
b. Piston
Grind off any scratches on the outside surface using a flap wheel with 240 grit and
finish with 360 grit. When polishing the piston or the cylinder bore, it is not necessary
to completely remove scratches (only the sharp edges) as this may remove excess
material. (Figures 19, 20 and 21, Page 27)
c. Main Valve and Sleeves
Main valve and sleeves cannot be polished. Replace if these parts do not slide freely
by finger pressure.
COMPONENT WEAR LIMITS
Parts are to be replaced if they are not within the wear parameters. See Table 8 and
Figure 17, for new dimensions see Table 9 page 24.
Table 8. Component Wear Limits
COMPONENT WEAR LIMITS
Front cap
bushing
When the clearance between the tool and the front cap bushing
exceeds .200 in. (5mm), a new front cap bushing is required.
(Approximately 500 hours of use).
Shank bushing
When the clearance between the tool and the shank bushing exceeds
.160 in. (4mm), a new shank bushing is required. (Approximately
700 hours of use).
Tool
If .120 in. (3mm) of wear in the diameter is observed, a new tool is
required. (Approximately 500 hours of use). Keep tool sharp.