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Hitachi C 8FC Manual

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1. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY:
Points requiring particular attention in disassembly and reassembly are described below. The circled numbers in
the descriptions correspond to the item numbers in the Parts List and exploded assembly diagrams.
[CAUTION]
Prior to attempting disassembly (including replacement of the saw blade), ensure that the machine is
turned OFF and the plug is disconnected from the power source.
1-1. Disassembly:
Disassembly
No.
of Section
1
Gear Case
Section
A. Remove the M6 x 22 Knob Bolt [27], and take off Guard (A) [17].
B. With the standard accessory 10 mm Box Spanner, loosen the two M6 x
30 Bolts (w/Washers) [31], and take off the Fence [32] and Clamp
Piece [30]. As the Clamp Piece is very small, be very careful not to
lose it.
MODEL
Method of Disassembly
--- 1 ---
C 8FC
10 mm Box
Wrench
(Standard
Accessory)
Tools Required

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  Summary of Contents for Hitachi C 8FC

  • Page 1 MODEL C 8FC 1. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY: Points requiring particular attention in disassembly and reassembly are described below. The circled numbers in the descriptions correspond to the item numbers in the Parts List and exploded assembly diagrams. [CAUTION] Prior to attempting disassembly (including replacement of the saw blade), ensure that the machine is turned OFF and the plug is disconnected from the power source.
  • Page 2 Disassembly Method of Disassembly Tools Required of Section C. Loosen the M5 x 10 Hex. Socket Set Screw [16] which fixes the Gear Hexagon Bar Case Pin [41] at the upper side of the Hinge [8], and then remove the Wrench M5 x 12 Hex.
  • Page 3 Disassembly Method of Disassembly Tools Required of Section Saw Cover, Lever (A) Safety Cover, the Spindle Ass'y, and Washer (C) A. Remove the M5 x 12 Machine Screw [48] and take off Washer (B) Philips Hd. (Plus) [108], Lever (A) [106], and Spring (C) [107]. Screw driver B.
  • Page 4 Disassembly Method of Disassembly Tools Required of Section Housing Ass'y, Switch, Ar- mature Ass'y, and Stator Ass'y Minus Screw- A. Disassembly of the Armature Ass'y: driver (1) Remove the Brush Caps [82] and the Carbon Brushes [83] (two Phillips Hd. each).
  • Page 5 Disassembly Method of Disassembly Tools Required of Section Stopper Pin A. Following the proce- dures described above, perform disassembly as far as removal of the Arma- ture Ass'y [74]. B. With the pliers, ex- Pliers tract the Retaining Ring (E-Type) [46] from the Stopper Pin [52], and take off the Stopper Pin [52] and...
  • Page 6 500V DC Megohm Tester, and confirm that the insulation resistance of each part is more than 5MΩ, (2) When assembling the Hinge [8] and the Gear Case [51], apply 2 grams of grease (Hitachi Motor Grease No. 29, Code No. 930-035, is recommended) to the oil groove of the Hinge.
  • Page 7 1-3. Wiring: Carefully ensure that wiring is accomplished as illustrated below. As incorrect wiring will result in lack of rotation, reverse rotation or other malfunctions, close attention is absolutely necessary. (1) Wiring Diagram: Stator Assembly Black Switch Noise Suppressor (Condenser) Green/ Yellow Armature Assembly...
  • Page 8 1-5. Assembly Adjustments Requiring Particular Attention: (1) Adjustment of Saw Blade and fence Perpendicularity: After disassembly/reassembly or replacement of the Base [37], Turn Table [35], Fence [32], Hinge [8], or Hinge Holder [15], it is necessary to check the perpendicularity between the Saw Blade (or dummy disc*) and the Fence, and perform adjustment as necessary if they are not at an exact right-angle with relation to each other.
  • Page 9 * Confirmation of Saw Blade Lower Limit Positioning: Prior to shipment, the lower limit position of the Saw Blade is factory adjusted so that the dimension from the bottom surface of the Gear Case to the surface of the Turn Table is between 62.3 mm and 63 mm, as illustrated in Fig.
  • Page 10 Test Workpieces should be prepared with a planer or jointer, and their dimensions and accuracy should be carefully checked prior to cutting tests. Test workpieces which are manually and/or inaccurately prepared are useless to check the cutting accuracy of the Model C 8FC. (1) Press Cutting: Cutting Conditions: 1 Test Workpiece: Yellow Pine, 60 mm square ...
  • Page 11 5 Cutting Accuracy: Square [Direction A ] Workpiece Accuracy δ (mm) Angle 0˚ 0.15 or less 45˚ 0.15 or less δ [Direction B ] Square Workpiece Accuracy δ (mm) Angle 0˚ 0.2 or less δ Fig. 7 (2) Bevel Cutting: Cutting Conditions: 1 Test Workpiece: Yellow Pine, H 45 mm x W 60 mm ...
  • Page 12 2. TROUBLE SHOOTING AND REPAIR GUIDE: The circled numbers in the table below correspond to the item numbers in the Parts List and exploded assembly diagrams. All dimensions shown in the table are in millimeters (mm). Item Phenomenon Possible Cause (s) Factory Standard Inspection, Repair, Adjustment •...
  • Page 13 Item Phenomenon Possible Cause (s) Factory Standard Inspection, Repair, Adjustment • Poor Cutting Accuracy h. The swivel portions of Check for foreign matter the Hinge and Gear (cutting chips, etc.) in the Case are either loose fittings of the Hinge [8], Gear and move with Case [51], and Gear Case Pin excessive play, or fail...
  • Page 14 Blade. ---- due to a dull or damaged Saw Blade. • d. An improper Saw Use a genuine HITACHI TCT Blade is being used. Saw Blade. • The greater the number of teeth on the Saw Blade, the greater is the cutting ---- resistance.