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Hitachi C 7D Technical And Service Manual

Cordless circular saw
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MODEL
C 7D
POWER TOOLS
C
TECHNICAL DATA
CORDLESS CIRCULAR SAW
AND
C 7D
SERVICE MANUAL
LIST No. F851
May 2001
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
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Summary of Contents for Hitachi C 7D

  • Page 1 MODEL C 7D POWER TOOLS TECHNICAL DATA CORDLESS CIRCULAR SAW C 7D SERVICE MANUAL LIST No. F851 May 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...

  • Page 3: Table Of Contents

    9-1. Precautions in Disassembly and Reassembly ................11 9-2. Precautions in Disassembly and Reassembly of Battery Charger ..........16 9-3. Mounting Method of Bevel Plate and Link ..................16 10. STANDARD REPAIR TIME (UNIT) SCHEDULES ..............17 Assembly Diagram for C 7D...

  • Page 4: Product Name

    Model C 7D offers AC-powered product level durability. In addition, the handle of the Model C 7D is shaped and located in the same manner as the well-reputed Model C 6DC's handle for ease of operation. The Model C 7D can cut a workpiece 2 inches thick by a single cut operation even when cutting at 45˚.

  • Page 5: Selling Point Descriptions

    The shape, angle and location of the handle are important considerations in designing an easy-to-use circular saw. The shape, angle and location of the Model C 7D's handle are similar to those of the Model C 6DC that is familiar to users. A nonskid and shock-absorbing elastomer is used at the palm side of the grip for easier operation.
  • Page 6 (6) Dust collector set available as option A dust collector set is available as an optional accessory for the Model C 7D. When the cutting operation produces bothersome saw dust and wood chip dispersion, particularly in indoor use, attaching the dust collector set to the main body and connecting it to a vacuum cleaner will minimize dust dispersion for cleaner and more comfortable operation.

  • Page 7: Specifications

    5. SPECIFICATIONS Model C 7D Saw blade diameter 185 mm (7-1/4") Cutting depth 0 --- 60 mm (0 --- 2-3/8") at 90˚ at 45˚ 0 --- 47 mm (0 --- 1-27/32") Type of motor DC magnet motor Type of handle...
  • Page 8 1) Saw blade For the U.S.A. and Canada Code No. Hole diameter No. of teeth External diameter 302410 15.9 mm (5/8") 18 pieces 185 mm (7-1/4") For Australia and New Zealand Code No. Hole diameter No. of teeth External diameter 302411 20 mm (25/32") 18 pieces...

  • Page 9: Comparisons With Similar Product

    6. COMPARISONS WITH SIMILAR PRODUCT HITACHI Maker C 7D C 6DC Model 57 mm (2-1/4") 90˚ 60 mm (2-3/8") Max. Cut depth 45˚ 40 mm (1-9/16") 47 mm (1-27/32") Diameter 165 (6-1/2") 185 mm (7-1/4") Saw blade 40 pieces No. of chips 18 pieces No-load speed (/min.)

  • Page 10: Precautions In Sales Promotion

    8. PRECAUTIONS IN SALES PROMOTION In the interest of promoting the safest and most efficient use of the Model C 7D Cordless Circular 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 Caution Plate and Name Plate attached to each tool.
  • Page 11 (10) Disposal of the Type EB 2420 battery. Ensure that all customers understand the Type EB 2420 Battery should be returned to the Hitachi power tool sales outlet or authorized service center when they are no longer capable of being recharged or repaired. If thrown into a fire, the batteries may explode, or if discarded indiscriminately, leakage of the cadmium compound contained in the battery may cause environmental pollution.

  • Page 12: Caution Plates

    (3) The following cautions are listed on the Name Plate attached to each Model UC 24 YFB Charger. For the U.S.A. and Canada Charge HITACHI rechargeable battery type EB 2420. Other types of batteries may burst causing personal injury and damage.

  • Page 13: Inherent Drawbacks Of Cordless Circular Saw Requiring Particular Attention During Sales Promotion

    (1) Do not overload the motor. As the Model C 7D is a battery-powered cordless circular saw, the motor's output and torque are less than those of ordinary AC-powered circular saws. Do not twist or thrust the main body during cutting. Otherwise, the motor becomes locked and will cause burning of the motor or deterioration of the battery.

  • Page 14: Repair Guide

    9-1. Precautions in Disassembly and Reassembly The [Bold] numbers in the descriptions below correspond to the item numbers in the Parts List and the exploded assembly diagram for the Model C 7D. 9-1-1. Disassembly Before disassembly, be sure to remove the TCT Saw Blade [17] to prevent damage to the teeth or personal injury.
  • Page 15 (4) Removal of the Armature Ass'y DC 24V [44] First, remove the two Brush Caps [50] and take out the two Carbon Brushes [49]. The Carbon Brush [49] can be easily taken out by hooking the protrusion of the Carbon Brush [49] with the tip of a flat-blade screwdriver as shown in Fig.
  • Page 16 9-1-2. Reassembly Reassembly can be accomplished by following the disassembly procedures in reverse. However, particular attention should be given to the followng items. (1) Tightening torque Seal Lock Flat Hd. Screw M4 x 10 [15] ........14 to 22 kgf•cm (12 to 19 in•lbf) Bolt (W/Flange) M8 x 15.5 [19] ............
  • Page 17 (4) Reassembly of the Bearing Holder [9] with the Spindle and Gear Set [8] It becomes difficult to mount both the Bearing Holder [9] and the Spindle and Gear Set [8] to the Gear Cover Ass'y [3] if grease gets in the metal chamber of the Gear Cover Ass'y [3]. Very lightly apply grease on the metal sliding surface of the spindle being careful not to get grease in the metal chamber.
  • Page 18 (8) Internal wire arrangement (See Figs. 6 and 7.) Connect internal wires as illustrated in Figs. 6 and 7. At this time, ensure that none of the wires are pinched between components during reassembly. Mount the Knob (off-lock lever) [37], Terminal (A) [36] and Spring (F) [35] without fail.

  • Page 19: Precautions In Disassembly And Reassembly Of Battery Charger

    9-2. Precautions in Disassembly and Reassembly of Battery Charger Refer to the Technical Data and Service Manual of the Model UC 24YFB Charger for precautions in disassembly and reassembly of this charger. 9-3. Mounting Method of Bevel Plate and Link Base 9-3-1.

  • Page 20: Standard Repair Time (Unit) Schedules

    10. STANDARD REPAIR TIME (UNIT) SCHEDULES Variable 60 min. MODEL Fixed Work Flow C 7D Handle Cover Switch Housing Magnet General Assembly Saw Blade Armature Ass'y Safety Cover Ball Bearing (608VV) Return Spring Ball Bearing (6001VV) Gear Cover Ass'y Spindle and...
  • Page 21 LIST NO. F851 ELECTRIC TOOL PARTS LIST CORDLESS CIRCULAR SAW 2001 • • Model C 7D (E1) 18 19 64 65 66 67 65 66 67 68...
  • Page 22 PARTS C 7D ITEM CODE NO. DESCRIPTION REMARKS USED 620-1VV BALL BEARING 6201VVCMPS2L 302-432 RUBBER RING 319-884 GEAR COVER ASS’Y INCLUD.2,6,7 319-885 GEAR COVER ASS’Y INCLUD.2,4,6,7 FOR USA,CAN CAUTION PLATE FOR USA,CAN HITACHI LABEL 961-729 CUSHION 949-794 FLAT HD. SCREW M6X20 (10 PCS.)
  • Page 23 PARTS C 7D ITEM CODE NO. DESCRIPTION REMARKS USED 999-058 CARBON BRUSH (1 PAIR) 319-847 BRUSH CAP 959-141 CONNECTOR 50092 (10 PCS.) 319-831 GRIP COVER 319-956 WASHER (B) 960-108 HEX. HD. TAPPING SCREW D4X60 319-894 TERMINAL SUPPORT 319-806 BATTERY EB 2420 (W/ENGLISH N.P.)

  • Page 24: Standard Accessories

    STANDARD ACCESSORIES C 7D ITEM CODE NO. DESCRIPTION REMARKS USED 319-836 CASE CHARGER (MODEL UC 24YFB) 302-478 BOX WRENCH 13MM OPTIONAL ACCESSORIES ITEM CODE NO. DESCRIPTION REMARKS USED 302-691 GUIDE 302-690 DUST COLLECTOR SET Printed in Japan 5 -- 01...

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