Hitachi C 12LSH Technical Data And Service Manual page 75

Item
Phenomenon
1
Holder (A)
Slide pipe (A)
Torsion level
0.05/100 max.
Fig. 80
Fig. 81
Cause (s)
g Inaccurate
squareness between
fences (A) and (B),
turn table and base
causes the workpiece
to tilt at an angle and
prevent accurate
cutting.
h Loose fitting of
swiveling portion of
hinge (A) and gear
case, or sluggish
movement. As a
result, components
may be deformed
because of unstable
gear case or because
the operator must
apply excessive
pressure during
operation.
i Excessively fast
cutting speed causes
deflection of saw
blade and inaccurate
cutting.
j Excessive cutting force
(pressure) is required
because of dull saw
blade.
k The workpiece moves
during cutting because
it is bent or deformed.
--- 71 ---
Factory
Inspection, repair or adjustment
standard
• Adjust the clearance between
the Bushing [143] and Slide
Pipe (A) [149] with the Seal
Lock Hex. Socket Set Screw
M6 x 10 [148]. Ensure that
slide pipe section slides
smoothly with a slide load of
within 3 kgf.
• Replace Fence (A) [96] or
0.1/50
(height of fence) Fence (B) [51] as necessary.
(Fig. 81)
• Check the fitting surfaces of
------
Hinge (A) [173], Gear Case
[275] and Hinge Shaft (A) [186]
for any foreign substance (such
as cutting dust) and remove it
as necessary.
------ • Reduce the cutting speed
(appropriately 10 seconds for a
square wood workpiece of
90 mm (3-9/16")).
------ • Sharpen the saw blade again.
• Correct bend, flex or other
------
deformation by planing and try
cutting.