Hitachi C 12LSH, Technical Data And Service Manual

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a Inaccurate
squareness between
the turn table and the
saw blade causes the
saw blade to cut into
the workpiece at an
angle.
b Excessive deflection
of the saw blade
(Excessive vibration)
c Inaccurate
squareness between
fence (A) and fence
(B) and the saw blade
d Surfaces of fence (A)
and fence (B) are not
accurately aligned,
causing workpiece to
deviate from proper
squareness.
e Inaccurate surface
flatness of the turn
table.
f Squareness between
the saw blade and the
turn table is changed
when sliding.
• Readjust squareness with the
Nylock Hex. Socket Set
Screw M8 x 16
[17] .
• Replace Hinge (A) [173] or
Gear Case [275] or Turn
Table [26] or Base Ass'y [59]
(if deformed).
• Replace the TCT Saw Blade
[286] .
• Check for surface defects on
Washer (A) [287] or Washer
(B) [285B] and repair with a
file as necessary.
• Replace Washers (A) [287] or
Washer (B) [285B] .
• Loosen the Bolt (W/Washers)
M8 x 35 (Black) [50] and
adjust as necessary.
• Replace Fence (A) [96] and
Fence (B) [51] .
• Loosen the Bolt (W/Washers)
M8 x 35 (Black) [50] and
adjust surface alignment of
Fence (A)
[96] and Fence (B)
[51] as necessary.
• Replace Fence (A) [96] or
Fence (B) [51] .
• Replace the Turn Table [26] .
• Press-fit Slide Pipe (A) [149]
and Slide Pipe (B) [166] into
the Support [134] . Tighten
the Hex. Socket Set Screw
M8 x 10
[135] and check the
accuracy (maximum torsion
level 0.05/100). If it is not
accurate, replace Slide Pipe
(A)
[149] and Slide Pipe (B)
[166] with new ones (Fig. 80).
0.15/100
(Dummy disc)
(Fig. 77)
When sliding (tip)
0.25/100
(Dummy disc)
0.2/
φ
295
(Dummy disc)
0.15/100
(Fig. 78)
0.15 or less
(Fig. 79)
0.15/
φ
250
Same as a
(Fig. 80)
1 Inaccurate cutting
• • •
Inaccurate
squareness of the cut
surface
• • •
Cut surfaces do not
fit together properly.
Fig. 77
Fig. 78
Fig. 79
Item Phenomenon Cause (s)
Factory
standard
12. REPAIR GUIDE
Inspection, repair or adjustment