Hitachi C 12FSA Technical Data And Service Manual
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Hitachi C 12FSA Technical Data And Service Manual

Hitachi C 12FSA Technical Data And Service Manual

Slide compound saw
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MODEL
C 12FSA
POWER TOOLS
C
TECHNICAL DATA
SLIDE COMPOUND SAW
AND
C 12FSA
SERVICE MANUAL
LIST No. E925
Sep. 2001
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

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  • Page 1 MODEL C 12FSA POWER TOOLS TECHNICAL DATA SLIDE COMPOUND SAW C 12FSA SERVICE MANUAL LIST No. E925 Sep. 2001 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT...
  • Page 2 REMARK: Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol(s) is(are) used in the place of company name(s) and model name(s) of our competitor(s). The symbol(s) utilized here is(are) as follows: Competitors Symbols Utilized Company Name Model Name LS1212 MAKITA...

  • Page 3: Table Of Contents

    CONTENTS Page 1. PRODUCT NAME ..........................1 2. MARKETING OBJECTIVE ........................ 1 3. APPLICATIONS ..........................1 4. SELLING POINTS ..........................1 4-1. Selling Point Descriptions ........................2 4-2. Electronic Control and Its Functions ....................10 5. SPECIFICATIONS ........................... 12 6. COMPARISONS WITH SIMILAR PRODUCTS ................13 7.
  • Page 4 11-4. Checking of Insulation Distance ......................43 11-5. No-load Current ..........................43 11-6. Reassembly Requiring Adjustment ....................43 11-7. Lubrication ............................45 11-8. Product Precision ..........................45 11-9. Cutting Accuracy ..........................46 12. REPAIR GUIDE ..........................49 13. STANDARD REPAIR TIME (UNIT) SCHEDULES ................ 54 Assembly Diagram for C 12FSA...

  • Page 5: Product Name

    1. PRODUCT NAME Hitachi Slide Compound Saw, Model C 12FSA 2. MARKETING OBJECTIVE This unit is able to handle materials of 120 mm (4-23/32") height and perform right and left bevel cutting for better miter cutting performance. Not only that, it produces a fine finish on the cut surfaces by means of constant-speed cutting with minimized revolution variation during sawing thanks to its advanced electronic control.

  • Page 6: Selling Point Descriptions

    (25/32") thick] so that the workpiece on the fence side can be cut full width. A 20 mm (25/32")-thick auxiliary board required to The sliding section of the C 12FSA employs ball ensure full-width cutting bushings as in the C 10FS, which ensures not Fig. 2-2 only a high machining accuracy but also superior durability.
  • Page 7 (4) Right and left bevel cutting facility 1 Advantage of right and left bevel cutting Fig. 7 shows the left bevel cutting by C 8FB2 and Fig. 8 shows the right and left bevel cutting by C 12FSA. --- 3 ---...
  • Page 8 (b) In the case of C 12FSA, more accurate miter cutting is performed because the same reference plane (surface of the workpiece which contacts to the fence) is used in both the first and second processes as shown in Fig.
  • Page 9 By turning the turn table to the left or right and inclining the saw blade section (head) to the left or right, the Model C 12FSA is capable of compound cutting (bevel and miter, see Figs. 10, 11 and 12) of workpieces with the maximum dimensions shown in Table 5.
  • Page 10 A , so that the saw blade vibrates locally resulting in uneven cut surfaces. The electronic control provided in the C 12FSA serves to maintain relatively constant rotation in a range at which runout of the saw blade is Revolution (rpm) minimized, even at the no-load speed.
  • Page 11 (8) Poly V belt overload protection C 12FSA utilizes the poly V belt to transmit the rotation of the motor to the saw blade instead of a conventional gear transmission system. This is to reduce noise, however, there is a fear of cutting the poly V belt during overload.
  • Page 12 Therefore, dimensions "A" shown in Fig. 20-1 and Fig. 20-2 are widened and the accuracy when bevel cutting becomes bad. C 12FSA can provide high accuracy as shown in Table 10 at 45˚ bevel cutting with a workpiece 240 mm (9-7/16") in width.
  • Page 13 Fig. 22 (12) Retractable carrying handle Pull out The Model C 12FSA is equipped with a Push in (retract) retractable carrying handle that can be Carrying handle (retractable)

  • Page 14: Electronic Control And Its Functions

    4-2. Electronic Control and Its Functions (1) Control circuit (block diagram) Fig. 24 (2) Functions 1 Phase control circuit As illustrated in Fig. 25, the phase control element (triac) functions to increase or decrease the time (T) of the line voltage waveform in order to control the amount of voltage applied to the motor. Waveform of voltage applied to motor Voltage...
  • Page 15 3 Soft start circuit When the switch is turned on, the soft start circuit functions to gradually increase the voltage applied to the motor, thereby gradually increasing motor rotation Voltage applied to speed. motor is gradually increased. Switch ON Time Fig.

  • Page 16: Specifications

    5. SPECIFICATIONS 107 mm x 305 mm (4-7/32" x 12") 0˚ (Right angle) 120 mm x 260 mm (4-23/32" x 10-1/4") [with aux. board 20 mm (25/32")] 107 mm x 220 mm (4-7/32" x 8-21/32") Miter left/right 45˚ 120 mm x 180 mm (4-23/32" x 7-3/32") [with aux. board 25 mm (1")] Maximum 107 mm x 180 mm (4-7/32"...

  • Page 17: Comparisons With Similar Products

    6. COMPARISONS WITH SIMILAR PRODUCTS Maker/Model HITACHI HITACHI C 12FSA C 10FS Item 107 mm x 305 mm 98 mm x 310 mm 85 mm x 312 mm (4-7/32" x 12") (3-7/8" x 12-1/4") (3-11/32" x 12-9/32") 0˚ (Right angle)
  • Page 18 Maker/Model HITACHI HITACHI C 12FSA C 10FS Item Speed control Provided (electronic control) Provided (electronic control) Provided (electronic control) Provided (electronic control) Provided (electronic control) Poly V belt overload protector Poly V belt + Gear Gear Saw blade drive system...

  • Page 19: Precautions In Sales Promotion

    7. PRECAUTIONS IN SALES PROMOTION In the interest of promoting the safest and most efficient use of the Model C 12FSA slide compound saw by all of our customers, it is very important that at the time of sale the salesperson carefully ensures that the buyer seriously recognizes the importance of the contents of the Handling Instructions, and fully understands the meaning of the precautions listed on the various caution plates attached to each machine.

  • Page 20: Precautions Concerning Brakes (100 To 120 V Models)

    5-6 seconds when the switch is turned off. If it takes more than 10 seconds to stop, absolutely avoid further use of this unit. In this event, ensure that your customers bring this machine into their local Hitachi power tool dealer for servicing. 1) Be sure to use the carbon brushes dedicated to this machine (Code No. 999038).

  • Page 21: Adjustment And Operational Precautions

    8. ADJUSTMENT AND OPERATIONAL PRECAUTIONS 8-1. Adjustment of Table Insert Position M6 machine screws There are two adjustable table inserts mounted in the turn Saw blade Workpiece table. When the machine is shipped from the factory, the table Table inserts inserts are positioned so that there is no chance that the saw blade will come in contact with either side of the saw blade slot even if the machine is used for 45˚...

  • Page 22: How To Use The Vise Assembly

    [CAUTION] Perform the adjustment carefully to ensure that the saw blade does not cut into the turn table. Also, on completion of adjustment, ensure without fail that the two M8 nuts and the M8 wing nut are securely tightened. Proper dimension is M8 cutting depth Saw blade M8 mm wing nut...

  • Page 23: How To Use The Guard

    8-4. How to Use the Guard (1) There is a plastic guard mounted in holder (A). Holder (A) Fence (B) Workpiece To allow accurate grooving of the guard with the saw blade that is actually going to be used on the machine, the groove is not precut at the factory.

  • Page 24: Cutting Operation

    (3) Press cutting ( of Fig. 35) Like Model C 8FB2, Model C 12FSA can be used for press cutting of workpieces up to 100 mm (4") square in a single operation by simply pushing the saw blade section downward.
  • Page 25 Carefully instruct the customer never, ever to perform slide cutting in the direction toward the operator. Such operation is extremely hazardous, as the saw blade could ride up over the workpiece and cause the saw blade section (head) to kick upward unexpectedly, causing possible serious injury (see arrow Instruct the customer to always slide the saw blade section toward the fence while cutting, as shown by arrow...
  • Page 26 (8) Crown modeling cutting This machine can cut two types of crown molding workpieces by combining the miter and bevel cutting operations (for USA). Fig. 36 shows two common crown molding types having angles of (θ) 38˚ and 45˚. For the typical crown molding fittings, see Fig.
  • Page 27 (2) Setting to cut crown moldings at positions in Fig. 37 (See Fig. 40, tilt the head to the left.): Turn the turn table to the left and set the miter angle as follows: For 45˚ type crown moldings: 35.3˚ ( mark) For 38˚...
  • Page 28 Better Better hoped for, it is not caused by the performance of the saw blade or the Model C 12FSA. Fig. 46 In the cutting examples illustrated in Fig. 46, the cut surfaces on the sides marked...

  • Page 29: Precautions Concerning Electronic Control

    (2) Operating the Model C 12FSA near an electric welding machine may cause fluctuations in the rotation speed. The control circuit in the Model C 12FSA contains a magnetic sensor (a flux change detecting element) and a triac (which may malfunction because of excessive electrical noise). Accordingly, customers should be advised not to operate the Model C 12FSA in the immediate vicinity of other machines that generate extremely strong magnetic fields or excessive electrical noise.

  • Page 30: Adjustment Of Components

    9. ADJUSTMENT OF COMPONENTS 9-1. Bevel Angle Adjustment When shipped from the factory, the height of 8 mm bolts (A), (B), and (C) are adjusted so that the saw blade section (head) will stop at 0˚ (right-angle), 45˚ to the left, and 45˚ to the right. To Indicator change the head stop positions, instruct the customer to adjust Fixing pin...

  • Page 31: Structure Of The Ball Bushing (Linear Bearing)

    (2) Lubrication If it is necessary to replace the ball bushing, apply approximately 2 grams (0.071 oz) of grease (Hitachi Motor Grease, Code No. 930035, is recommended) on the steel balls and within the guide grooves of the new ball bushing.

  • Page 32: Packing

    10. PACKING (Different by areas) Dust bag (1) Preparation Remove the side handle, holder, stopper, holder Holder (B) and dust bag from the main unit. Stopper Then swivel the turn table through 57˚ toward the Swivel the right. Push the guard back. turn table 57˚...
  • Page 33 (4) How to install packings (A) and (D) Put packing (D) in the U-shaped groove of the base packing in the carton box. (See Fig. 55.) Put slide pipe (A) and slide pipe (B) in the grooves of packing (D). Insert packing (A) between the slide pipe (A) and slide pipe (B) at the rear.

  • Page 34: Precautions In Disassembly And Reassembly

    11. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY 11-1. Disassembly Special attention in disassembly should be given to the following items. The [Bold] numbers in the descriptions below correspond to the item numbers in the parts list and exploded assembly diagram. * Be sure to first disconnect the power plug when performing disassembly and replacement of the saw blade. Item Disassembly Disassembly procedure...
  • Page 35 Disassembly Item Disassembly procedure Necessary tools spots 1 Turn table, base 1. Remove the Knob Bolt M8 x 60 [94] and then remove Guard Ass'y ass'y (A) [93]. 2. Loosen the Clamp Lever [83], remove the Clutch Screw [81], turn Flatblade screwdriver the Bolt (Left Hand) M12 x 165 [84] and remove it from the Screw...
  • Page 36 Disassembly Item Disassembly procedure Necessary tools spots Safety cover, side cover (L), side cover (R), pulley cover, link [131A] Fig. 60 10 mm x 13 mm 1. Remove Side Cover (L) Ass'y [172] by removing the Wing Nut M8 13/32" x 33/64" [132], Bolt M8 x 100 [152], and the seven Tapping Screws double-head wrench...
  • Page 37 Disassembly Item Disassembly procedure Necessary tools spots 2. For New Zealand: 17 mm ( 43/64") Safety cover, box wrench Removing the Bolt (Left Hand) M8 [180] with the provided box side cover (L), wrench allows you to remove Washer (B) [179], saw blade and side cover (R), Washer (A) [177] in this order.
  • Page 38 Disassembly Item Disassembly procedure Necessary tools spots Tail cover, switch Fig. 62 Phillips 1. Remove the two Tapping Screws (W/Flange) D4 x 25 (Black) [113] screwdriver to remove the Tail Cover [112]. Phillips 2. Remove the Tapping Screw (W/Washers) D4 x 12 [150] and the screwdriver internal wire from the Switch [149] to remove the Switch [149].
  • Page 39 Disassembly Item Disassembly procedure Necessary tools spots Cord, support, hinge ass'y, ball bushing, bushing, holder (A) [70A] [76A] Fig. 63 Phillips 1. Remove the two Machine Screws M4 x 12 [56] and remove the screwdriver Nylon Clips [54] of the Support [61] and the Hinge Ass'y [51]. 2.
  • Page 40 Disassembly Item Disassembly procedure Necessary tools spots Cord, Roll pin plier 4. Remove the two Roll Pins D6 x 40 [60] by hammering inward. support, Plastic hammer Then gently hammer the Support [61] outward and remove it from hinge ass'y, Slide Pipe (A) and Slide Pipe (B).
  • Page 41 Disassembly Item Disassembly procedure Necessary tools spots Belt, pulley, spindle ass'y, stopper pin Fig. 64 13 mm (33/64") 1. Turn the Belt [157] by pulling it outward and remove it. Lock the wrench spindle with the Stopper Pin [165] and pull out the pulley (B) [159] by removing the Nut M8 [114].
  • Page 42 Disassembly Item Disassembly procedure Necessary tools spots Armature ass'y, stator ass'y, housing ass'y Fig. 65 Flatblade 1. Disassembly of the Armature Ass'y screwdriver (1) Remove the Brush Cap [99], Carbon Brush [100] and four Tapping Phillips screwdriver Screws (W/Flange) D5 x 25 (Black) [135] to remove the Housing Ass'y [101] from the Gear Case [140].
  • Page 43 Disassembly Item Disassembly procedure Necessary tools spots Armature ass'y, 3. Disassembly of the stator ass'y stator ass'y, (1) Remove the two Brush Terminals [105] of the Stator Ass'y [104] housing ass'y from the brush holder. (Cont.) (2) Remove the two Tapping Screws D5 x 65 [106] fixing the Stator Plastic hammer Ass'y [104] and pull out the Stator Ass'y [104] by gently hammering the Gear Case [140] mounting surface of the Housing Ass'y [101]...

  • Page 44: Reassembly

    (3) When replacing or reassembling the Liner [46A], ensure it is positioned and assembled as illustrated in Fig. 68. In addition, coat approximately 8 grams of Hitachi Motor Grease on the liner sliding portion of the Turn Table [9A].

  • Page 45: Wiring Diagram

    11-3. Wiring Diagram The Model C 12FSA is equipped with an overload protection circuit. 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.
  • Page 46 Wiring diagram (with 100 - 120 V brake) Cord ass'y Black Blue Blue White Armature ass'y Brake coil Yellow Stator coil Gray Stator ass'y Controller (A) ass'y Actual wiring diagram Cord (white) internal wire Internal wire of (white) stator ass'y (gray) Connector Cord Internal wire of...

  • Page 47: Checking Of Insulation Distance

    11-4. Checking of Insulation Distance Do not remove too much of the insulation coating at the internal wire connection. Take care not to let the core of the internal wire stick out Tube (D) [148] or let the internal wires get caught in a joint between the Side Cover (L) Ass'y [172] and Side Cover (R) [133].
  • Page 48 (3) Reassembly of the ball bushing Ball Bushing [65] and Holder (A) [68] are maintained at a smooth fit. When placing the Ball Bushing [65] into Holder (A) [68], gently hammer it with a plastic hammer so that the Ball Bushing [65] is seated into Holder (A) [68] in parallel.

  • Page 49: Lubrication

    11-7. Lubrication Advise the customer to lubricate the machine as indicated at least once a month. Also, prior to applying lubricant, any sawdust, dirt or other foreign matter should be thoroughly wiped away with a soft rag. (1) Swiveling section of the gear case Coat machine oil on the swivelling and sliding portions of the Gear Case [140] and Hinge Ass'y [51].

  • Page 50: Cutting Accuracy

    11-9. Cutting Accuracy Cut appropriate workpieces, measure the squareness with a square or other measuring devices and confirm that accuracy is within the standards listed below. [CAUTION] The test workpieces must be processed with a planer, and their rectangularity and surface flatness must be checked carefully prior to cutting tests.
  • Page 51 Cutting accuracy: [ A direction] Square [150 x 100 mm (6" x 4")] Angle gauge [150 x 100 mm (6" x 4")] 45˚ Wood test piece Wood test piece Square [300 x 200 mm (12" x 8")] [ B direction] Fence mounting surface Fence mounting...
  • Page 52 (3) Miter cutting Cutting conditions: Test piece: Yellow pine H 30 mm (1-3/16") x W 210 mm (8-17/64") All surfaces squarely planed. • • • • • • • • • Saw blade: 305 mm (12") TCT saw blade, number of teeth: 96 (Code No. 310875) Cutting time: 10 secs.

  • Page 53: Repair Guide

    12. REPAIR GUIDE Unit: (mm) The bracketed numbers correspond to the item numbers in the parts list. Factory Item Phenomenon Cause (s) Inspection • Repair •Adjustment standard a Inaccurate 0.15/100 • Adjust squareness with the Inaccurate cutting squareness between (0.006"/4") Nylock Bolt M8 x 40 [8].
  • Page 54 Factory Item Phenomenon Inspection • Repair •Adjustment Cause (s) standard • Ensure that slide pipe (A) slides ------ smoothly with slide load of 2 to Hinge ass'y 3 kgf (4.4 to 6.6 lbs.) without Slide pipe (A) looseness. g Inaccurate 0.1/40 •...
  • Page 55 Factory Item Phenomenon Cause (s) Inspection • Repair •Adjustment standard a Large deflection of 0.2/295 Rough cut surface • See as Item 1- b . saw blade. (Causes (0.008/11-5/8"). rough cut surface.) (Dummy disc) Parallelism A = 0.02/60 (0.0008"/2-3/8") b Poor movement of Slide load •...
  • Page 56 • Resharpen saw blade. is applied due to dull saw blade. d Incorrect saw blade is ------ • Use a suitable Hitachi-supplied used. saw blade. • An increased number of teeth on the saw blade increases the cutting resistance. When using...
  • Page 57 Factory Item Inspection • Repair •Adjustment Phenomenon Cause (s) standard Saw blade runs too a Defective magnet. ------ • Replace the Magnet [109]. fast. Saw blade revolution exceeds b Controller failure. ------ • Replace the Controller [110]. 3,850/min. Overload protection a Power supply voltage ------ •...

  • Page 58: Standard Repair Time (Unit) Schedules

    13. STANDARD REPAIR TIME (UNIT) SCHEDULES Variable MODEL Fixed C 12FSA General Assembly Pulley Cover Side Cover (R) Fixed Cost Handle Belt Washer Pulley Saw Blade Safety Cover Safety Cover Bolt (Left) Spindle Ass'y BB Holder Table Insert Washer Spring...
  • Page 59 LIST NO. E925 ELECTRIC TOOL PARTS LIST SLIDE COMPOUND SAW 2001 • • Model C 12FSA (E2)
  • Page 60 C 12FSA --- 2 --- 9 -- 01...
  • Page 61 C 12FSA 9 -- 01 --- 3 -- -...
  • Page 62 C 12FSA --- 4 --- 9 -- 01...
  • Page 63 PARTS C 12FSA ITEM CODE NO. DESCRIPTION REMARKS USED 949-258 MACHINE SCREW M6X20 (10 PCS.) 998-818 TABLE INSERT 949-215 MACHINE SCREW M4X8 (10 PCS.) 949-429 BOLT WASHER M4 (10 PCS.) 310-718 INDICATOR (B) 303-409 NYLOCK BOLT M8X25 310-719 INDICATOR (C)
  • Page 64 C 12FSA PARTS ITEM CODE NO. DESCRIPTION REMARKS USED 320-290 HINGE ASS’Y 1 INCLUD.61 FOR USA 967-896 GRIP 305-152 ONE-TOUCH BUSHING 1 EXCEPT FOR USA 948-193 NYLON CLIP 2 EXCEPT FOR USA 949-429 BOLT WASHER M4 (10 PCS.) 949-429 BOLT WASHER M4 (10 PCS.)
  • Page 65 PARTS C 12FSA ITEM CODE NO. DESCRIPTION REMARKS USED 303-403 GUARD (C) 998-850 FLAT HD. SCREW (BRASS) M4X6 996-259 BRUSH CAP 999-038 CARBON BRUSH (1 PAIR) 315-547 HOUSING ASS’Y 1 INCLUD.102,103 976-807 BRUSH HOLDER 966-426 HEX. SOCKET SET SCREW M5X6 340-336 STATOR ASS’Y 100V-120V...
  • Page 66 PARTS C 12FSA ITEM CODE NO. DESCRIPTION REMARKS USED 975-144 CABLE TIE 996-281 HEX. SOCKET SET SCREW M8X16 949-429 BOLT WASHER M4 (10 PCS.) 949-217 MACHINE SCREW M4X12 (10 PCS.) 310-725 COVER (A) NAME PLATE 304-035 TAPPING SCREW (W/FLANGE) D4X25 (BLACK)
  • Page 67 PARTS C 12FSA ITEM CODE NO. DESCRIPTION REMARKS USED 305-812 1 FOR AUS,USA TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 303-397 HOLDER 2 EXCEPT FOR USA 303-757 STOPPER 1 EXCEPT FOR USA 998-836 KNOB BOLT M6X11 1 EXCEPT FOR USA CAUTION LABEL (J) 1 FOR USA VINYL TUBE (A) (I.D.12XT1.5X80)

  • Page 68: Optional Accessories

    STANDARD ACCESSORIES C 12FSA ITEM CODE NO. DESCRIPTION REMARKS USED 972-043 WRENCH 10/13MM 702A 985-051 BOX WRENCH 17MM 998-845 DUST BAG OPTIONAL ACCESSORIES ITEM CODE NO. DESCRIPTION REMARKS USED 305-546 TCT SAW BLADE 305MM-D25.4 HOLE-NT60 309-418 TCT SAW BLADE 305MM-D25.4 HOLE-NT80...

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