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9. STANDARD REPAIR TIME (UNIT) SCHEDULES

MODEL

10

20

30

40

50

60 min.

Fixed

Variable

G 13SR

Work Flow

Slide Switch

Cord

Tail Cover

Housing Ass'y

Stator Ass'y

Slide Bar

Pinion

Bearing Cover

Ball Bearing

 (608 VVMC)

Inner Cover

Armature

Ball Bearing

 (626 VVMC)

Bearing Cover

Ball Bearing

 (6001 VVCM)

Felt Packing

Packing Gland

Spindle

Flinger

Pushing Button

Gear Cover

Ass'y

Lock Pin

Gear

Wheel Guard

 Ass'y

General Assembly

Summary of Contents for G 13SR

Page 1: ...POWER TOOLS TECHNICAL DATA AND SERVICE MANUAL DISC GRINDER G 13SR SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT LIST No E238 May 2000 G MODEL G 13SR ...

Page 2: ...Usage 6 8 PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY 7 8 1 Disassembly of the Armature 7 8 2 Reassembly of the Stator Ass y 7 8 3 Disassembly of the Gear 7 8 4 Precautions on Reassembly 8 8 5 Amount of Lubricant 8 8 6 Tightening Torque of Each Screw or Nut 8 8 7 Wiring Diagram 9 8 8 Remaining Reassembly 9 8 9 Insulation Tests 9 8 10 No Load Current Value 9 9 STANDARD REPAIR TIME UNIT SCHEDULES 10 A...

Page 3: ...l G 13SR are basically the same as for Model G 12SR except for the wheel size and gear ratio 3 APPLICATIONS Removal of casting fin and finishing of various types of steel bronze aluminum and other metallic materials and castings Grinding of welds or sections cut by acetylene torch Cutting steel bars steel pipes shaped steel and various other types of steel Cutting of concrete stone brick tile and ...

Page 4: ...gland Inner cover Enclosure 1 6 kg 3 5 lbs Net 1 3 0 kg 6 6 lbs Gross Corrugated cardboard box Packaging Glassfiber reinforced polycarbonate resin Standard accessories 2 Side handle 1 Wrench 1 4 800 m min 15 800 ft min 80 m s with DSA approved Red Belt on the label G 13SR O D 125 mm 5 x Thickness 6 mm 1 4 x I D 22 mm 7 8 Offset amount 4 8 mm 3 16 1 Net weight excludes cord side handle depressed ce...

Page 5: ... H 60 2 3 8 W 67 2 5 8 Weight 1 6 3 5 Ibs Actual weight 1 6 3 5 Ibs W W W min mm mm mm mm mm kg L G 10SR G 12SR 100 115 4 4 1 2 550 360 800 11 000 63 2 15 32 207 8 5 32 261 10 1 4 60 2 3 8 67 2 5 8 1 6 3 5 Ibs 1 6 3 5 Ibs 62 2 7 16 C 125 5 540 300 620 10 000 56 2 7 32 195 7 11 16 256 10 1 8 70 2 3 4 81 3 3 16 1 4 3 1 Ibs 1 5 3 3 Ibs 65 2 9 16 W L Weight excludes cord side handle depressed center w...

Page 6: ...1 Comparisons in torque vs rotation speed and stator coil temperature rise Fig 1 indicates 1 The rotation speed of maker C s model at the same torque is low and the stator coil temperature rise is high which causes low motor power 2 The rotation speed of HITACHI G 13SR at the same torque is high and the stator coil temperature is low As the speed and the temperature are well balanced HITACHI G 13S...

Page 7: ...protection against safety hazards the dangers inherent in the use of any electric power tool cannot be completely eliminated Accordingly general precautions and suggestions for the use of electric power tools and specific precautions and suggestions for the use of the disc grinders are listed in the Handling Instructions to enhance the safe efficient use of the tool by the customer Salespersons mu...

Page 8: ...t the operator s hand will not contact the depressed center wheel Fig 2 Fig 3 2 Never press the pushing button while the depressed center wheel is rotating If the pushing button illustrated in Figs 2 and 3 is pressed while the depressed center wheel is rotating the spindle will stop immediately In such a case there is a danger that the wheel nut may be loosened Eventually the depressed center whee...

Page 9: ...push down on the armature shaft with a hand press to remove the Armature 10 See Fig 4 8 2 Disassembly of the Stator Ass y 1 After removing the Armature 10 disconnect the lead wires of the Stator Ass y 12 from the Slide Switch 44 Then remove the Brush Terminals 13 from the Brush Holders 42 2 Loosen the Hex Hd Tapping Screws D4 x 70 11 and remove the Stator Ass y 12 8 3 Disassembly of the Gear 1 Loo...

Page 10: ...mixture of Hitachi Power Tool Grease No 2 unilube No 00 Code No 939302 and turbine oil is recommended Mixture ratio 1 1 Weight ratio Supply amount 0 5 cc 8 5 Amount of Lubricant Pinion chamber of Gear Cover Ass y 4 supply from inner cover side 8 gr of N P C SEP 3A grease Code No 930035 Also thoroughly apply grease on the gear teeth of the gear and pinion See Para 8 4 Needle bearing Metal Mixed oil...

Page 11: ...y procedures in reverse 8 9 Insulation Tests On completion of disassembly and repair measure the insulation resistance and conduct the dielectric strength test Insulation resistance 7 M or more with DC 500 V Megohm Tester Dielectric strength AC 4000 V 1 minute with no abnormalities 220 V 230 V 8 10 No Load Current Value After no load operation for 30 minutes the no load current value should be as ...

Page 12: ...e Switch Cord Tail Cover Housing Ass y Stator Ass y Slide Bar Pinion Bearing Cover Ball Bearing 608 VVMC Inner Cover Armature Ball Bearing 626 VVMC Bearing Cover Ball Bearing 6001 VVCM Felt Packing Packing Gland Spindle Flinger Pushing Button Gear Cover Ass y Lock Pin Gear Wheel Guard Ass y General Assembly ...

Page 13: ... 11 Assembly Diagram for G 13SR ...

Page 14: ... 1 21 301 946 FELT PACKING 1 22 301 947 PACKING GLAND 1 23 987 203 SEAL LOCK SCREW W SP WASHER M4X12 4 24 940 220 WOODRUFF KEY 2 5X8 1 25 319 117 SPINDLE 1 26 308 386 MACHINE SCREW W SP WASHER M5X16 BLACK 2 27 301 949 SET PLATE 1 28 319 116 WHEEL GUARD ASS Y 1 INCLUD 26 27 29 937 817Z WHEEL WASHER 1 30 994 324 WHEEL NUT M14 1 31 301 938 GEAR AND PINION ASS Y 1 INCLUD 6 17 32 938 299 SPRING 1 33 98...

Page 15: ...CRIPTION NO USED REMARKS 51 315 494 TAIL COVER 1 52 307 811 TAPPING SCREW W FLANGE D4X16 BLACK 1 53 500 409Z CORD 1 CORD ARMOR D8 8 54 960 266 CORD CLIP 1 54 308 094 CORD CLIP 1 FOR CHN 55 981 373 TUBE D 2 FOR CORD ALTERNATIVE PARTS 4 00 ...

Page 16: ... PCS 1 603 310 338 SUPER WASHER 1 CODE NO ALTERNATIVE PARTS STANDARD ACCESSORIES G 13SR ITEM NO CODE NO DESCRIPTION NO USED REMARKS 501 938 332Z WRENCH 1 502 318 312 SIDE HANDLE 1 4 00 Printed in Japan 000425 N OPTIONAL ACCESSORIES ITEM NO DESCRIPTION NO USED REMARKS ...

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