Repair Guide - Hitachi C 10FCH Technical Data And Service Manual

12. REPAIR GUIDE

Item Phenomenon
Inaccurate cutting
1
Inaccurate
• • •
squareness of the
cut surface
Cut surfaces do not
• • •
fit together properly.
Saw blade
Fence
Squareness
Turn table
Fig. 49
Fence (B)
Squareness
0.4/100
Saw blade
Fig. 50
0.1 or less
Fence (B)
0.1 or less
Fig. 51
Cause
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)
0.4/100
c Inaccurate
squareness between
the fence and the saw
blade
Fence (A)
d Inaccurate surface
flatness of the fence
causes workpiece to
move irregularly,
causing poor
Squareness
squareness of cut
0.4/100
surface.
e Inaccurate surface
flatness of the turn
table
Fence (A)
Factory
standard
0.4/100
(Dummy disc)
(Fig. 49)
0.38/220
(Dummy disc)
0.4/100
(Fig. 50)
0.1 or less
(Fig. 51)
0.15 or less
--- 37 ---
Unit: mm
Inspection, repair or
adjustment
• Adjust squareness with the
Nylock Bolt M8 x 25 [38].
• Replace the Hinge [30], Gear
Case Ass'y [130] or the Turn
Table [50] (if deformed).
• Replace the TCT Saw Blade
255 mm [88].
• Check for surface defects on
Washer (D) [87], and repair
with a file as necessary.
• Replace Washer (D) [87].
• Loosen the Bolt M8 x 35 [60]
and adjust the squareness.
• Replace Fence (A) [75] or
Fence (B) [64].
• Loosen the Bolt M8 x 35 [60]
and adjust the squareness.
• Replace Fence (A) [75] or
Fence (B) [64].
• Replace the Turn Table [50].