T ECHNICAL INFORMATION Models No. HM0871C, HM0870C Description Demolition Hammers PRODUCT P 1/ 17 L CONCEPT AND MAIN APPLICATIONS H Models HM0871C and HM0870C are 5kg-class demolition hammers adapted for SDS-MAX bits, and developed from HM0860C, featuring: Same high work efficiency as HM0860C Higher durability achieved by using ball bearing for crank section AVT* for reduced vibration during chipping (HM0871C only) Suppression of motor speed during no-load for reduced vibration when idling Listed below are the specification differences between the two models. Model No. AVT* Vibration absorbing handle Suppression of motor speed during no-load HM0871C HM0870C Yes No W [The image above is HM0871C.] Dimensions: mm (") Model No. HM0871C HM0870C Length (L) 466 (18-3/8) 449 (17-3/4) Width (W) 116 (4-9/16) 109 (4-1/4) 230 (9) Height (H) *Anti-Vibration Technology using Active dynamic vibration absorber Specification Voltage (V) Current (A) Cycle (Hz) 110 120 220 230 240 12 10 5.8 5.8 5.8 50/60 50/60 50/60 50/60 50/60 Model No. Impacts per min: min-1= ipm Shank type Shank diameter: mm (") AVT (Anti-Vibration Technology using Vibration Active dynamic vibration absorber) absorption Vibration absorbing handle Variable speed control by dial Electronic Soft start Constant speed control control Suppression of motor speed during no-load Double insulation Continuous Rating (W) Input Output 1,100 450 --450 1,100 500 1,100 500 1,100 500 Max. Output (W) 1,200 1,200 1,200 1,200 1,200 HM0871C HM0870C 1,100 - 2,650 Adapted for SDS-MAX bits 18 (11/16) Yes No Yes No Yes Yes Yes Yes No Yes Europe, Hong Kong, Korea: 4.0 (13.1); Brazil: 2.0 (6.6); Other countries: 5.0 (16.4) Power supply cord: m (ft) Net weight*1: kg (lbs) Net weight*2: kg (lbs) 5.6 (12.4) 5.8 (12.8) 5.1 (11.1) 5.3 (11.6) *1 Weight according to EPTA-Procedure 01/2003, with bar-shaped Side handle. *2 Weight according to EPTA-Procedure 01/2003, with D-shaped Side handle. Standard equipment Side handle (Bar- or D-shaped) ........... 1 Bit grease .............................................. 1 Plastic carrying case ........................ 1 Cleaning cloth .................................. 1 Note: The standard equipment for the tool shown above may vary by country. Optional accessories Bull points Cold chisels Scaling chisels Scaling chisel (for Tile) Grooving chisel Clay spade Bushing tool Rammer Shank (for Bushing tool and Rammer) Grease vessel (containing 30g hammer grease) Side handle (Bar-shaped/ D-shaped) Safety goggles Hammer service kit P 2/ 17 Repair CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.  NECESSARY REPAIRING TOOLS Code No. 1R003 1R005 1R023 1R089 1R132 1R139 1R212 1R214 1R229 1R230 1R239 1R269 1R288 1R291 1R306 1R363 Description Retaining ring S pliers ST-2N Retaining ring R pliers RT-2N Pipe ring ( for Arbor press) Bearing extractor Nose 15-20 Drill chuck extractor M8x40 Hex socket head bolt Flat washer 8 Tip for Retaining ring pliers Taper sleeve 1/4” Hex shank bit for M5 1/4” Hex shank bit for M6 Round bar for Arbor 10-100 Bearing extractor Screwdriver magnetizer Retaining ring S and R pliers Ring spring removing jig Ring spring removing tool Use for Removing Ring springs Removing Retaining ring (INT) round R-42 When it is difficult to remove Armature from Crank housing complete. When it is difficult to remove Ball bearing 6203LLU. Attachment for 1R089 to remove Ball bearing 6203LLU Removing Crank shaft Attachment for 1R003 to remove Ring springs Fitting Fluoride ring on Impact bolt Unscrewing/ screwing M5 size Hex socket head bolt Unscrewing/ screwing M6 size Hex socket head bolt When it is difficult to remove Armature from Crank housing complete. Removing Ball bearing 608DDW from Armature’s commutator end Magnetizing screwdriver when removing Steel balls Removing Ring spring 34 when disassembling Barrel section When it is difficult to remove Armature from Crank housing complete. Removing Ring spring 25  LUBRICATIONS Apply the following lubricants to the portions to protect the parts and product from unusual abrasion. Item No. 1 7 16 19 21 Description Tool holder cap Tool retainer Steel ball 4.8 (4pcs.) Fluoride ring 28 Impact bolt Portion to lubricate Lip portion Belly portion where Hammer bit contacts Whole portion The surface where Tool holder contacts Cylindrical portion of Striker side 22 Ring 20 23 Rubber ring 20 27 Flat washer 23 31 O ring 24 The surface where 32 Cylinder contacts. 32 38 49 51 53 58 Cylinder 32 O ring 46 Pin 8 O ring 26 Connecting rod Crank housing complete Inside between Striker and Piston. a little Whole portion Whole portion a little The hole in which Crank shaft’s pin is inserted Crank room 19 Tool holder 7 Striker 31 Lock ring 21 32 49 Cylinder guide 38 22 Guide ring 23 Piston 50 51 Pin of Crank shaft 20g O ring 23 between Fluoride ring 28 and Impact bolt Note: Do not apply any grease to O ring 23 attached to Fluoride ring 28. Change ring 16 Makita grease R.No.00 7g Fig. 1 1 Lubricant Amount Makita grease a little N.No.2 27 53 58 P 3/ 17 Repair  DISASSEMBLY/ASSEMBLY -1. Chuck section DISASSEMBLING (1) Remove Tool holder cap as illustrated in Fig. 2. Fig. 2 Remove Handle section by loosening four 5x25 Stand the machine upright. Tapping screws, and then disconnect Lead unit from Controller. Note: It is not necessary to disconnect Switch and Power supply cord. While pressing down Chuck cover, remove Tool holder cap. And then, remove Chuck cover. Tool holder cap Controller Lead unit Chuck cover Handle section 5x25 Tapping screw (4pcs.) (2) Disassemble Chuck section as illustrated in Figs. 3 and 4. Fig. 3 Flat washer 28 1. Pulling down Chuck cover, install 1R363 in the same way of SDS-MAX bit installation. Rubber ring 28 2. Press down Flat washer 28 by turning Socket wrench to make Ring spring 25 free from the pressure by Flat washer 28. Socket wrench Chuck ring Ring spring 25 3. Remove Ring spring 25 using 1R003 with 1R212. 1R363 Ring spring 25 Spring guide 1R212 1R003 Flat washer 28 4. Remove Flat washer 28, Rubber ring 28 and Chuck ring. Fig. 4 While pressing down Spring guide, push out Tool retainers by screwdriver inserted from Tool holder. Remove Spring guide, Compression spring 52 and Plate. Remove four Steel balls 4.8 with Slotted screwdriver magnetized by 1R288. Remove Change ring together with Lock ring. And separate Lock ring from Change ring. Lock ring Spring guide Tool retainer Spring guide Plate Screwdriver magnetized by 1R288 Compression Steel ball 4.8 spring 52 (4pcs.) Change ring P 4/ 17 Repair  DISASSEMBLY/ASSEMBLY -2 Tool holder section DISASSEMBLING (1) Disassemble Chuck section. (Figs. 2, 3 and 4) (2) Removing Retaining ring R-42, disassemble Tool holder section and take out Impact bolt. (Fig. 5) (3) Remove Fluoride ring 28 and O ring 23 from Impact bolt when Fluoride ring 28 is worn out as illustrated in Fig. 6. Fig. 5 1. Tool holder is fixed to Barrel with Retaining ring R-42. Remove the Retaining ring R-42 with 1R005. Retaining ring R-42 2. Remove Flat washer 29 and Rubber ring 28. 3. Pull off Tool retainer from Barrel. Tool holder 4. Remove Impact bolt from Tool holder by pushing out with Screwdriver. Flat washer 29 Rubber ring 28 Barrel Flat washer 29 Tool holder O ring 38 Barrel Impact bolt 5. Remove O ring 38 from Tool holder. Fig. 6 When orange colored O ring 23 can be seen through Fluoride ring 28, Fluoride ring 28 and O ring 23 have to be replaced with new ones. Fluoride ring 28 (the worn one) O ring 23 (color: orange) Impact bolt ASSEMBLING (1) When particles and dust are in the inside of Barrel and Crank housing, be sure to clean them up. (2) Fit O ring 23 into the groove of Impact bolt, and then put Fluoride ring 28 on O ring 23 as illustrated in Fig. 7. (3) Assemble Tool holder and Chuck section by taking the reverse step of Figs. 5, 4, 3 and 2. Note: Do not apply any grease to O ring 23, or the Fluoride ring will not shrink even using Taper sleeve. Be sure to apply Makita grease R.No.00 to the outer surface of Fluoride ring 28 after fitting into Impact bolt. Fig. 7 Fluoride ring 28 O ring 23 Impact bolt Outer surface of Fluoride ring 28 O ring 23 Taper sleeve (No.1R214) groove on Impact bolt Fluoride ring 28 is protruded from the groove on Impact bolt. Note: Once Fluoride ring is expanded, it does not shrink by itself. If you insert Impact bolt into Tool holder without shrinking Fluoride ring, Fluoride ring will be pinched and broken, or Impact bolt will loose smooth sliding action. 1) Insert Impact bolt securely into Taper Sleeve from HR5001C marking side. groove on Impact bolt 2) Hold the Impact bolt for at least 60 seconds. Fluoride ring 28 is fit into 3) Then pull Impact bolt out of the groove on Impact bolt. Taper sleeve. Note: If it is hard to pull out Note: If it is hard to pull out Impact bolt, Impact bolt, insert a round insert a round bar from the opposite bar from the opposite side side and hit it slightly. and hit it slightly. P 5/ 17 Repair  DISASSEMBLY/ASSEMBLY -2 Tool holder section (cont.) ASSEMBLING (2) Assemble Tool holder section by taking the reverse step of Fig. 5. Insert Impact bolt into Tool holder. Note: Face the short end of Impact bolt to Hammer bit insertion side. See Fig. 8. (3) Assemble Chuck section by taking reverse step of disassembly. Refer to Figs. 4, 3 and 2. Fig. 8 Short end Hammer bit insertion side Tool holder Long end Impact bolt -3 Active dynamic vibration absorber (exclusively for HM0871C) DISASSEMBLING (1) First, disassemble Chuck section as illustrated in Fig. 2, 3 and 4. (2) Remove Housing cover as illustrated in Fig. 9. Fig. 9 Housing cover Remove Housing cover by unscrewing M5x25 Hex socket Head bolt. Active dynamic vibration absorber comes into sight. M5x25 Hex socket head bolt Active dynamic vibration absorber (3) Remove Active dynamic vibration absorbers from the both side of the machine as illustrated in Fig. 10. Fig. 10 Insert Screwdriver into the hole of Handle side, and push Spring guide in Active dynamic vibration absorber to be stuck as follows: Spring guide Pipe holder A Spring guide tilted and stuck in Pipe holder A Crank housing Spring guide has to be removed from Crank housing prior to the next step. Insert two slotted screwdrivers between Crank housing and Active dynamic vibration absorber, and then lever up Active dynamic vibration absorber from Crank housing. P 6/ 17 Repair  DISASSEMBLY/ASSEMBLY -3 Active dynamic vibration absorber (exclusively for HM0871C) (cont.) DISASSEMBLING (4) The removed Active dynamic vibration absorber can be disassembled as illustrated in Fig. 11. Fig. 11 Pipe holder B Pipe holder A Pipe holder support Pipe holders can be separated by turning and pushing Pipe holders each other illustrated above. Pipe holder B O ring 18 O ring 18 Compression spring 12 O ring 8 Compression Pipe holder A Counter weight spring 12 Spring guide Pipe 16 ASSEMBLING (1) Assemble a pair of Active dynamic vibration absorber. (Fig. 11) (2) Before fitting Active dynamic vibration absorber to the machine, take the steps in Figs. 12 and 13. Fig. 12 Fig. 13 Protrude Spring guide from Pipe holder A with Screwdriver Pipe holder A Screwdriver Tighten M6x25 Hex socket head bolt designated with black arrow in order to align Insertion hole for Pipe holder support with Insertion hole for Pipe holder A. Then tighten the other M6x25 M6x25 Hex socket head bolts (3pcs.). M6x25 Hex socket head bolt Protrusion as distinction of the direction of Barrel. Insertion hole for Pipe holder A Spring guide Spring guide to be protruded from Pipe holder A Insertion hole for Pipe holder support (3) Insert Pipe holder supports of Active dynamic vibration absorbers to holes on Barrel and Crank housing. (Fig. 14.) And push Active dynamic vibration absorbers parallel to the machine so as to pass the protrusion of Spring guides through the holes of Crank housing. (Refer to Figs. 12 and 10.) Fig. 14 Barrel Crank cap side Active dynamic vibration absorbers Connector of Pipe holder support Note: Do not insert Pipe holder supports as illustrated above. P 7/ 17 Repair  DISASSEMBLY/ASSEMBLY -4 Piston, Striker, Cylinder DISASSEMBLING (1) Disassemble Chuck section as illustrated in Figs 2, 3 and 4. (2) Remove Housing cover as illustrated in Fig. 9. In case of HM0871C, disassemble Active dynamic vibration absorber as illustrated Figs. 9 and 10. (3) Striker and Piston can be disassembled as illustrated in Figs. 15 and 16. Note: It is not necessay to remove Tool holder from Barrel. Fig. 15 Remove Barrel from Crank housing Note: Do not lose Flat washer 34 between Crank housing and Barrel. Separate Striker from Barrel, and then remove O ring 24 from Striker. Barrel Flat washer 34 Barrel Striker O ring 24 Striker M6x25 Hex socket head bolt (4pcs.) Fig. 16 M4x18 Pan head screw (4pcs.) Remove Crank cap, Seal ring, Air pipe and Flat washer 34 from Crank housing. And remove Piston together with Connecting rod. Crank cap Connecting rod Crank shaft Seal ring Air pipe Turning Crank shaft, set Piston to the closest position to Barrel side. Piston Crank housing Piston Crank shaft Barrel side O ring 24 Pin 8 Piston O rings on Piston can be O ring 26 replaced . Connecting rod P 8/ 17 Repair  DISASSEMBLY/ASSEMBLY -4 Piston, Striker, Cylinder (cont.) DISASSEMBLING (4) Separate Cylinder section from Barrel. The parts on Tool holder side can be removed from Cylinder 32 as per the right illustration in Fig. 17. Fig. 17 Remove Cylinder section by tapping Barrel using plastic hammer. Pay attention to the tapped position. Ring 20, Rubber ring 20, Flat washer 23, Guide ring, Slide sleeve are removed from Cylinder section. Cylinder Section Ring 20 Rubber ring 20 Flat washer 23 fit to the long drum side of Impact bolt Guide ring Barrel Slide sleeve Barrel Cylinder 32 (5) Pressing down Ring 36, remove Ring spring 34 (A) from Groove (A) on Cylinder 32 with 1R291. The components of Cylinder section can be separated by removing Ring spring 34 (B) and (C). (Fig. 18.) Fig. 18 Ring spring 34 Cylinder 32 groove(A) groove(B) groove(C) 1R291 Ring 36 Compression spring 37 Cylinder guide Ring 36 Compression spring 37 Cylinder guide Ring spring 34 (A) Groove (A) on Cylinder 32 Ring spring 34 (B) Ring spring 34 (C) O ring 46 Ring washer 34 (See Fig. 15.) P 9/ 17 Repair  DISASSEMBLY/ASSEMBLY -5 Crank shaft DISASSEMBLING (1) Separate Barrel from Crank housing. (Fig. 15) (2) Remove Crank cap, Seal ring, Air pipe and Flat washer 34 from Crank housing. (the left illustration in Fig. 16) (3) Remove Piston together with Connecting rod ( the right illustrations in Fig. 16) Note: Turn Crank shaft so that the crank pin is at the closest position to Barrel side for easy removal of Connecting rod. (4) remove Crank shaft as illustrated in Figs. 19 and 20. Fig. 19 1. Keeping Crank shaft in the condition Crank pin is at the closest position to Barrel side, hold Armature by inserting a bar into Armature fan. Bar to hold Armature fan 2. Put 1R139 on Crank housing, facing 13mm notch to Barrel side. Barrel side Crank pin at the closest position to Barrel side Fig. 20 3. Putting Flat washer 8 on 1R139, drive M8x40 Hex socket head bolt to the center hole of Crank housing through Flat washer 8. Bar to hold Armature fan M8x40 Hex socket head bolt 4. Tighten the M8x40 Hex socket head bolt using Hex wrench until Crank shaft is pulled off from Ball bearing 6203LLU in Crank housing. Bar to hold Armature fan Flat washer 8 Crank pin is locked by 1R139. Hex wrench P 10/ 17 Repair  DISASSEMBLY/ASSEMBLY -5 Crank shaft DISASSEMBLING (1) Separate Barrel from Crank housing as per the left illustration in Fig. 15. (2) Remove Crank cap, Seal ring Air pipe and Flat washer 34 from Crank housing as per the left illustration in Fig. 16. (3) Remove Piston together with Connecting rod as per the center and right illustrations in Fig. 16. (4) remove Crank shaft as illustrated in Figs. 19 and 20. Fig. 21 Crank shaft can be removed as illustrated below. Remove Retaining ring R-40 with 1R005. M8x40 Hex Socket head bolt Retaining ring R-40 Loosening M8x40 Hex socket head bolt halfway, insert Crank shaft into the remaining Ball bearing 6203LLU by tapping the M8x40 Hex socket head bolt. Flat washer 8 (5) Lock Armature, and set 1R139, Flat washer 8 and M8x40 Hex socket head bolt as illustrated in Fig. 20 again, tighten the M8x40 Hex socket head bolt with Hex wrench. So Ball bearing 6203LLU are removed as illustrated in Fig. 22. If it is difficult to remove as illustrated in Fig. 22, remove Ball bearing 6203LLU as illustrated in Fig. 22A. Fig. 22 Crank shaft Fig. 22A M8x40 Hex socket head bolt Flat washer 8 Setting 1R132 into the inner ring of Ball bearing 6203LLU, pull off Ball bearing 6203LLUwith 1R089. 1R089 1R132 Ball bearing 6203LLU Ball bearing 6203LLU P 11/ 17 Repair  DISASSEMBLY/ASSEMBLY -5 Crank shaft (cont.) ASSEMBLING (1) Assemble Crank housing section as illustrated in Fig.s 23. Be careful that Crank shaft of HM0870C is different from that of HM0871Cas illustrated in Fig. 24. (2) Assemble Piston to Crank pin while referring to the right illustration in Fig. 16. (3) Assemble Air pipe, Seal ring and Crank cap. And secure them with M4x18 Pan head screws. Refer to the left illustration in Fig. 16. Fig. 24 Fig. 23 HM0870C 17mm Center of Crank shaft Retaining ring R-40 Ball bearing 6203LLU HM0871C 17.5mm Wave washer 30 Crank housing Set the above parts in place. Center of Crank pin -6 Cylinder section ASSEMBLING (1) Cylinder section can be assembled as illustrated in Fig. 25. Fig. 25 Assemble Cylinder guide to Cylinder 32 so that O ring 46 side of Cylinder guide faces Crank housing side. O ring 46 Crank housing Side Cylinder guide Cylinder 32 Align the six protrusions of Guide ring to Slide sleeve and assemble Guide ring to Slide sleeve. Six protrusions Slide sleeve Guide ring Crank housing side Cylinder 32 (2) When assembling the parts which accept Impact bolt, put them into Guide ring as illustrated in Fig. 26. Fig. 26 Ring 20 Impact bolt Rubber ring 20 Guide ring Flat washer 23 Note: Rubber ring 20 has to be assembled so as to contact closely to Ring 20 without any gap. Note: Ring 20 has to be assembled so that its inner side can be fit to Impact bolt as illustrated right. (3) Assemble Cylinder section to Barrel as illustrated in Fig. 27. (4) Assemble Flat washer 34 into Crank housing, and then assemble Barrel to Crank housing as illustrated in Fig. 28. Fig. 27 Fig. 28 Insert Cylinder section into Barrel. Insert Striker into the Cylinder so that the protrusion of Striker faces Tool holder side. Barrel Tool holder Cylinder section Protrusion of Striker Flat washer 34 M6x25 Hex socket head bolt (4pcs.) P 12/ 17 Repair  DISASSEMBLY/ASSEMBLY -7 Controller DISASSEMBLING Controller can be removed as illustrated in Fig. 29. Fig. 29 Unscrewing 4x12 Tapping screws, remove Controller by levering up with two Slotted screwdrivers. Disconnect Connector From Controller. Disassemble Handle section by unscrewing four 5x25 Tapping screws. Handle section -8 Armature DISASSEMBLING (1) Disassemble Chuck section as illustrated in Fig. 2, Fig. 3, Fig. 4. However, no need to remove Tool holder. (2) Disassemble Housing cover as illustrated in Fig. 9. (3) In case of HM0871C, remove Active dynamic vibration abosorber after removing Housing cover. See Fig. 10. (4) Disconnect Carbon brush from Armature’s commutator as illustrated in Fig. 30. Fig. 30 Disassemble Rear cover from Motor housing. Detach Spiral spring from Carbon brush. By pulling Carbon brush, disconnect its contact with Armature's commutator. Note: It is not necessary to remove Carbon brush completely from Brush holder set. Motor housing Spiral spring Carbon brush Carbon brush Rear cover 4x18 Tapping screw(2pcs.) (5) Separate Motor housing by tapping with Plastic hammer as illustrated in Fig. 31R. Fig. 31R Tap Motor housing at the illustrated portion with Plastic hammer. Armature can be removed together with Crank housing from Motor housing. Fig. 31F Do not tap Motor housing at the edge portion illustrated below. The edge of Motor housing is so thin that it may be broken. P 13/ 17 Repair  DISASSEMBLY/ASSEMBLY -8 Armature (cont.) DISASSEMBLING (6) Disassemble Armature from Crank housing as illustrated in Fig. 32. If it is difficult to remove as illustrated in Fig. 32, Crank shaft has to be removed in the following process. 1. Disassemble Barrel, Cylinder section as illustrated in Fig. 15. 2. Disassemble Crank cap, Seal ring, Air pipe and Piston as illustrated in Fig. 16. 3. Remove Crank shaft from Crank housing as illustrated in Figs. 19 and 20. 4. Remove Armature using 1R306, 1R239, 1R023 and arbor press as illustrated in Fig. 32A. Fig. 32 Fig. 32A Armature can be removed by striking Crank housing with plastic hammer. Put Crank housing on 1R023. Set 1R306 to ram of Arbor press. Press down Armature using 1R239. Armature 1R306 Crank housing 1R239 1R023 Crank housing Armature (7) Armature can be disassembled as illustrated in Fig. 33. Fig. 33 Ball bearing 6203LLB Flat washer 12 Fan 76 Insulation washer Ball bearing 608DDW P 14/ 17 Repair -9 Handle section (1) Disassemble Handle section as per the left illustration in Fig. 29. (2) Remove Handle cover by unscrewing 4x18 Tapping screw to replace the electrical parts in Handle. See Fig. 34. Fig. 34 Remove 4x18 Tapping screw and Handle cover. Switch and Power supply cord can be replaced. Rubber pin 4 comes out after removing Switch. Switch Rubber pin 4 Handle cover 4x18 Tapping screw Power supply cord (3) In case of HM0871C, the Vibration absorbing handle section can be disassembled as illustrated in Fig. 35. Fig. 35 Unscrew 5x25 Tapping screws. So Vibration absorbing handle can be disassembled in five parts as illustrated below. Flat washer 5 (2pcs.) Compression spring 11 Dust Cover Support 5x25 Tapping screw (2pcs.) Handle base Handle Dust cover Handle cover ASSEMBLING Assemble Handle section as illustrated in Fig. 36. Fig. 36 Back side Assemble Dust cover support to Handle base, facing its Triangle mark to Back side. When assembling Dust cover to Dust cover support, face the >NBS< mark to Triangle mark on Dust cover support. Dust cover support Triangle mark “>NBS<” Mark Dust cover P 15/ 17 Repair  DISASSEMBLY/ASSEMBLY -10. Fastening torque Fasten the following bolts to the specific fastening torque. Item No. Description Q’ty Fastening torque Use for 25 M6 x 25 Hex socket head bolt 4 Fastening Barrel to Crank housing complete 7.8 - 11.7 N.m M5 x 25 Hex socket head bolt 1 Fastening Housing cover to Barrel 2.9 - 3.4 N.m 42 Housing cover Fig. A Barrel 25 Crank housing complete 42 25  MAINTENANCE PROGRAM Replacing the following parts is recommended when Carbon brush is replaced. Wipe off the old grease in the machine, and then apply the fresh grease in accordance with  LUBRICATIONS. 1 Fig. B 3 7 Chuck cover 19 Tool holder Barrel 31 Striker 7 50 Cylinder 32 Item No. Description 1 Tool holder cap 7 20 Tool retainer O ring 23 51 O ring 26 3 Ring spring 25 19 Fluoride ring 28 31 50 20 Impact bolt 51 Piston O ring 24 P 16/ 17 Circuit diagram Fig. D-1 Color index of lead wires' sheath Black White Polyethylene tube Terminal block Brown Lead wire is used for some countries. Blue Lead wire is used for some countries. Power supply cord Wiring diagram Fig. D-2 Note in wiring Controller for HM0870C is different from that for HM0871C. Controller Indication for 110V-127V area HM0871C HM0870C without No Load Speed with No Load Speed Suppression Suppression 631929-5 LOT No. LOW 631931-8 LOT No. LOW 100 - 130V Indication for 220V-240V area HM0870C without No Load Speed Suppression 631930-0 LOT No. HIGH HM0871C with No Load Speed Suppression 631932-6 LOT No. HIGH 220 - 240V P 17/ 17 Wiring diagram Fig. D-3 Lead Unit Pass the Lead wires of Lead unit through Polyethylene tube illustrated below. Polyethylene Tube Ø8-30 for connecting to Switch for connecting to Terminal block Connector Fig. D-4 Handle Put the following Lead wires of Lead unit into Sponge sheet. * Lead wire (black) for connecting to Switch * Lead wire (black) for connecting to Terminal block * Lead wire (white) for connecting to Switch Sponge sheet The Lead wires have to be tightened in this area. Connector of Lead unit Terminal block Lead unit’s Lead wires bundled with Polyethylene tube has to put under Terminal block. Boss Polyethylene tube Lead unit’s Lead wires Lead unit’s Lead wires have to be put on both side of Boss, And connect them to Switch and Terminal.