NR 83AA2 - Cloudfront.net
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1. 16 Possible cause Problem x most common cause Inspection method Remedy 2 Nails bent Nails are not fully fed into See item 1 See item 1 while being the injection port driven Unspecified nails used See item 1 See item 1 Driver blade worn Check if the driver blade tip Replace the part is abnormally worn e Regrind See 9 2 Regrinding the Driver Blade The material being driven e Check if a nail bent even Unusable because the tool into is very hard when driven into soft wood is not designed for such usage pressure OO OW Adjust for 5 to 8 5 kgf cm driven into the material but 4 9 8 3 bar 70 120 psi the head is raised above the surface e The material being driven into is very hard e Drive the nail into soft wood and check if the head is raised or not Unusable because the tool is not designed for such usage xe Driver blade worn Check if the driver blade tip is worn e Replace the part e Regrind See 9 2 Regrinding the Driver Blade Piston O ring abnormal worn damaged Cylinder s internal surface abnormal worn rough Disassemble the output section and check the Piston O ring and the internal surface of the cylinder for abnormal condition Replace the defective part Replace the defective part Use specified nails 4 Nai2. 7 Te Warning Label az ca u ate aa 7 7 3 Related Laws and Regulations nenea nea e 8 8 MECHANISM AND OPERATION PRINCIPLE 9 871 MECHANISM T 9 8 2 Interchangeability S 11 8 9 Operation Principle cr ea aaa e a aaa a n a a a Di a a a dnd tpud 12 9 TROUBLESHOOTING GUIDE uuu u I baga a aaa na ai tan ii tacea ai Data aaa 16 9 1 Troubleshooting and Correction nenea nana manea nana aa enma ana 16 9 2 Regrinding the Driver Blade uuu uuu u enne nennen nnne aaa enn nee 18 9 3 Possible Causes and Corrections of Air Leakage nenea ana 18 10 DISASSEMBLY AND REASSENBLY u u 20 10 1 General Precautions in Disassembly and Reassembly 20 10 2 Disassembly and Reassembly of the Output Section mm nenea nana na 21 10 3 Disassembly and Reassembly of the Control Valve Section 25 10 4 Disassembly and Reassembly of the Driving Section and the Magazine Section 26 11 INSPECTION AND CONFIRMATION AFTER REASSEMBLY 28 12 STANDARD REPAIR TIME UNIT SCHEDULES
3. u 29 Assembly Diagram for NR 83AA2 1 PRODUCT NAME Hitachi Strip Nailer Model NR 8 83 mm 3 1 4 2 MARKETING OBJECTIVE The Model NR 83AA2 strip nailer is an upgraded version of the current Model NR 83AA equipped with the same output section as the Model NR 83AA that is well reputed with its rapid driving and quick response and the newly designed driving and magazine sections Primary differences from the Model NR 83AA are described below 1 Construction of the driving port nose and piston is changed to cope with the problem that some of the commercially available nails are apt to clog 2 The magazine is changed from top loading type to rear loading type so that long strip nails such as SENCO nails can be loaded without folding In addition the magazine is lengthened to increase the nail capacity from 82 nails 3 3 mm 0 131 dia HKU to 86 nails Paslode F350S 84 nails 3 The body handle of the Model NR 83AA is wound with the grip tape however dust adheres to the joints of tape and it impairs operability To cope with this problem a band type grip rubber is adopted to the Model NR 83AA2 4 In the Model NR 83AA2 the magazine section is simplified and no washer is used to reduce parts count for easy maintenance 5 The claw at the tip of the pushing lever is hardened to increase the wear resistance and the shape of the claw is changed to prevent slipping even when driving nai
4. 1 First priority items are marked with an asterisk x 2 Second priority items seal portions are marked with a double circle 8 Remaining items are marked with a single circle O See Parts List and exploded assembly diagram for part name and location Air leak part Cause When trigger valve safety valve are OFF When trigger valve safety valve are ON When trigger valve ON safety valve OFF Exhaust vent x Cylinder 17 does not return Swollen Cylinder O ring 16 Use of unsuitable oil causes swelling Advise the customer to use Shell Tonna Oil T32 O Deformed Cylinder 17 or Cylinder Guide 22 O Yielded or broken Cylinder Spring 20 Defective Head Cap and Gasket Set 10 worn rubber portion or broken Broken Gaskets C F 8 6 O Loose Hex Socket Hd Bolt W Flange M6 x 45 1 O Broken Exhaust Cover 4 Defective Exhaust Valve 9 worn deformed or broken Exhaust cover O Loose Hex Socket Hd Bolt W SP Washer M6 x 25 3 Broken Gasket B 5 Damaged seal surfaces of Ass y 26 and Exhaust Cover 4 Nose O Deformed Nose 33 O Loose Nylock Hex Socket Hd Bolt M8 x 22 32 D Nose O Damaged Oylinder O ring 18 or O ring of Cylinder Guide 22 worn deformed or broken O Defective Body Ass y 26 worn corroded or deformed X Broken or cracked Piston Bumper B 28
5. NR 83AA2 HITACHI POWER TOOLS TECHNICAL DATA STRIP NAILER AND NR 83AA2 SERVICE MANUAL LIST No E001 May 2001 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT 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 R SENCO FP650 Y PASLODE 3505 5 Page 1 PRODUCT 1 2 MARKETING OBJECTIVE eee noire eren eonun ta aie 1 1 A 2EBICcHIelp gcpe m 1 5 SPECIFICATIONS 2 5 1 anti eu ll ca ea 2 5 2 Nail Selection ata a 3 5 3 Nail ele 4 5 4 Optional Accessories nenea ema ana nnns enne 5 6 COMPARISONS WITH SIMILAR PRODUCTS 6 7 PRECAUTIONS IN SALES PROMOTION u u u 7 7 1 Instruction Manual u ca ari
6. 50 Valve Bushing 51 Trigger Plunger 59 DG gt lt Roll Pin D3 x 30 43 Trigger 53 GC Fig 16 Disassembly of valve Plunger B 54 b Reassembly Reassembly can be accomplished by following the disassembly procedures in reverse However special Plunger A 50 attention should be given to the following items Plunger B 54 Be very careful in handling the Plunger Spring 48 as it can become twisted very easily To prevent the two O rings on the outside of the Valve Bushing 51 from being damaged when inserted into the body carefully apply grease to the body hole and Salely Bolt 44 the outer circumference of the O rings prior to Nut M5 47 assembly Nose 33 c Adjustment of the Pushing Lever 46 See Fig 17 O The Pushing Lever 46 can be adjusted by loosening the Nut M5 47 and turning the Safety Bolt 44 O Perform adjustment to a point where the resistance of Plunger B 54 pushing up Plunger A 50 is felt when the pushing lever is raised At this point the lower end of the Nose 33 should be separated from the lower end of the pushing lever by 3 5 mm 0 5 mm 138 020 Fig 17 Pushing lever adjustment Pushing Lever 46 138 020 25 10 4 Disassembly and Reassembly of the Driving Section and the Magazine Section 1 Nose 33 Pushing Lever 46 and the related parts See Fig 18 Tool required Hexagon bar wrenc
7. The magazine can be easily mounted by inserting the magazine into the nose and securing the handle arm to the body with a screw Nose 4 Nose Head of nail NR 83AA NR 83AA2 The lt Bold gt numbers in the figure below correspond to the numbers in 8 3 Operation Principle Exhaust Valve lt 2 gt Exhaust cover Exhaust Vent lt 3 Exhaust piece Piston lt 4 gt Accumulator lt 1 gt Safety valve portion Control valve section Trigger valve portion Grip rubber Output section Cylinder Spring lt 5 gt Nail stopper Piston Nose lt 10 gt Magazine section Firing gate Nail feeder ass y Driving section Pushing lever Fig 4 Construction 8 2 Interchangeability The driving section and the magazine section are not interchangeable between the Model NR 83AA2 and the NR 83AA because these sections of the Model NR 8 2 have been newly designed The output section and the control valve section are interchangeable except the following parts Part NR 83AA2 NR 83AA Body Ass y 26 5 7 mm dia hole M8 female screw Piston Bumper B 28 10 mm dia 8 3 mm dia Large hole dia Piston 12 Sectional view Sectional view Driver blade Nylock Hex Socket Hd Bolt M8 x 22 32 Nylock Hex for mounting the Nose Socket Hd 33 Bolt M8 x 22 32 Short le
8. ech NN 1 ech Lech a FOR TPE FRA USA CAN 2 ALTERNATIVE PARTS 3 01 PARTS CODE NO 877 337 DESCRIPTION VALVE BUSHING REMARKS FOR TPE FRA USA CAN NR 83AA2 875 638 O RING S 12 876 203 TRIGGER 877 339 PLUNGER B FOR TPE FRA USA CAN 878 734 875 645 VALVE PACKING URETHANE BALL C D7 14 875 644 VALVE PLATE 877 335 TRIGGER VALVE BUSHING 878 121 TRIGGER PLUNGER 874 820 883 491 PLUNGER O RING NOSE RUBBER 883 496 NAIL RAIL 883 499 SLEEVE 883 497 MAGAZINE COVER 883 502 949 688 NAIL FEEDER A ROLL PIN D4X40 10 PCS 883 501 NAIL FEEDER B 883 441 FEEDER SPRING 883 500 NAIL FEEDER ASS Y INCLUD 65 68 883 503 943 364 RIBBON SPRING NEEDLE ROLLER D4X20 883 495 MAGAZINE LABEL 984 443 HEX SOCKET HD BOLT W FLANGE M6X12 883 498 882 408 NAIL STOPPER PLUNGER SPRING S FOR SEQUENTIAL TRIP MECHANISM TYPE 874 436 O RING P 4 FOR SEQUENTIAL TRIP MECHANISM TYPE 882 409 PLUNGER S FOR SEQUENTIAL TRIP MECHANISM TYPE 882 411 BUSHING S FOR SEQUENTIAL TRIP MECHANISM TYPE 882 412 882 410 ROD SPRING S ROD S lech Iech lech lech lech Ce 1 ech 1 ech lech 1 FOR SEQUENTIAL TRIP MECHANISM TYPE FOR SEQUENT
9. O Deformed Piston 12 ODeformed Nose 33 Trigger valve O Defective Urethane Ball C D7 14 56 damaged or deformed O Defective ball sheet surface of Trigger Valve Bushing 58 damaged deformed or worn Defective Valve Packing 55 damaged deformed or broken O Soiled or damaged valve packing sheet surface of Body Ass y 26 Incursion of foreign materials O Defective Plunger O ring 60 worn defomred or broken O Defective outside O ring 52 of Trigger Valve Bushing 58 3 Safety valve Defective Gaskets F 8 6 damaged yielded x Deformed or broken Gasket G 23 O Defective O ring 13 or Cylinder O ring 14 of the Cylinder Plate 15 worn deformed or broken O Defective Cylinder O ring 16 worn deformed or broken O Air will leak slightly from the lower portion due to construction O Defective outside O ring 52 of the Valve Bushing 51 worn deformed or broken O Defective plunger O ring 49 worn deformed or broken Defective Plunger Spring 48 deformed or broken O Defective safety Valve Bushing 51 deflected deformed or broken Cap Loose Hex Socket Hd Bolt M5 x 18 40 Broken Gasket D 38 O Defective seal surface of the Body Ass y 26 39 19 10 DISASSEMBLY AND REASSEMBLY The items particularly necessary for disassembly and reassembly are described b
10. air pressure is applied to both the Exhaust Valve lt 2 gt forcing upper and lower sides of the cylinder the it downward and closing cylinder is forced downward due to the larger the Exhaust Vent lt 3 gt effective area of the upper side Accordingly the upper portion of the cylinder is opened and the compressed air forces the piston downward Cylinder ring When the trigger and pushing lever are operated 8 simultaneously the safety valve and trigger valve are opened The trigger and pushing lever are operated simultaneously NOTE If either the trigger or pushing lever are operated individually compressed air will not enter the valve air passage and the nailer will not function When the trigger and pushing lever are operated simultaneously the exhaust vents are closed As the piston moves downward the air below the piston is forced into the Return Air Chamber lt 8 gt When the piston passes the middle vent some of the air passes into the return air chamber This supplies auxiliary air to ensure complete return of the piston Fig 6 When the trigger and pushing lever are operated Air pressure is applied in the shaded areas in the illustration and each component is held in the position illustrated If the operator s grip is loosened air will leak At there is no o ring installed here a very small amount of air will leak from the slight clearan
11. g L v X 91 X EL X 91 6 81 X 9 8 9 1 g v X 9U vL X 8 1 81 MXHX7 901 X 296 LSS 801 X 801 X ww x 097 SUOISUSWIG Csal tal 64 8 8 sal 2 8 2 2 Csal tal By g e Csal kal 64 8 8 isd 021 OZ isd 021 08 isd 021 OZ isd 021 OZ 2 0 6 8 S 9 8 G S D M 8 8 55 VVE8 HN cVVE8 HN pON IHOVLIH JOXEIN SLONGOUYd HVIINIS SNOSIHVdWOO 9 7 PRECAUTIONS IN SALES PROMOTION In the interest of promoting the safest and most efficient use of the Model NR 83AA2 Nailer 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 Instruction Manual and fully understands the meaning of the precautions listed on the Warning Label attached to each tool The Model NR 83AA2 Nailer is designed for continuous nail driving however some of the Model NR 83AA2 are designed for single shot operation only for some destinations At time of sale the salesperson must inform the customer that the sequential trip mechanism kit which can change the Model NR 83AA2 to a single shot nailer is optionally available and recommend it to the customers who want to use it Refe
12. removed from the front of the Magazine 72 Remove the three Hex Socket Hd Bolts W Flange M6 x 12 74 Then Handle Arm 36 Nail Stopper 75 and Magazine Cover 64 can be removed together with the other parts O The Nail Rail 62 that is press fitted into the Magazine 72 has a protrusion at the rear end to prevent coming off Tap at the front of the Magazine 72 using a hammer and a bar being careful not to scratch the parts b Reassembly Disassembly procedures should be followed in the reverse order Note the following points O Insert the Nail Rail 62 from the rear of the Magazine 72 and press fit the Nail Rail 62 into the Magazine 72 by tapping with a wooden hammer so that the protrusion of the Nail Rail 62 becomes flush with the rear end of the Magazine 72 O Hook the hook of the Ribbon Spring 70 on the Magazine 72 then mount the Nail Feeder Ass y 69 to the Magazine 72 Slide the Nail Feeder Ass y 69 backward and insert a screwdriver or a rod into the stopper hole for the Nail Feeder Ass y 69 as shown in Fig 15 O Press the mounting surface of the Nail Stopper 75 against the Magazine 72 and slide it backward until the A portion fits into the concave portion of the Magazine Cover 64 then secure them with the bolt At this time mount the Sleeve 63 without fail Concave portion e Magazine Cover 64 Nylon Nut M6 35 64 Sleeve 63 Convex portion Nail Rail 62
13. 1 x 3 1 4 34 Paper tape 4 6 mm 0 181 Max NSSS NNS NNSS 31 7mm Fig 1 Dimensions of nail 5 3 Nail Driving Force Fig 2 shows by type of wood and nail the nailer output energy provided by the supply pressure and the nailing energy required for driving the nail flush Air pressure which exceeds the intersecting point between the nailer output energy and the nailing energy required for driving the nail allows the nail to be fully driven For example when driving a nail of 3 3 mm dia by 83 mm length 0 131 x 3 1 4 into nine sheets of 12 mm plywood 108 mm thick with the Model NR 83AA2 a pressure of about 7 0 bar 7 1 kgf cm 102 psi allows the nailer to drive the nail flush with the wood surface A pressure beyond this value causes the nail head to be driven below the wood surface Fig 2 should be used as reference data because those values vary depending on the type moisture content and grain of wood Required nailing energy Nailer output energy ft Ib kgf cm J i i ft lb kgfecm J i i I I I 180 r 4 j FS ee ee 1 zt 1800 1800 I I I I X I I 7 120 I 120 7 60r r 4 r PETE 60 T 7 F Rem 77 1600 I I 1600 I I I I I i 90AA f
14. B 877 329 GASKET F 877 328 EXHAUST PIECE 877 854 GASKET 878 417 EXHAUST VALVE 877 307 HEAD CAP AND GASKET SET 877 368 O RING 1AP 48 883 510 PISTON 877 316 O RING S 90 877 312 CYLINDER O RING I D 63 1 877 318 CYLINDER PLATE 877 313 CYLINDER O RING 1 0 79 3 877 810 CYLINDER 877 314 CYLINDER O RING 1 0 69 3 877 317 CYLINDER RING 877 321 CYLINDER SPRING 877 322 WASHER 877 310 CYLINDER GUIDE 877 327 GASKET G 878 184 WARNING LABEL 878 183 WARNING LABEL 883 506 BODY ASS Y 877 315 CYLINDER O RING 1 0 63 9 883 511 PISTON BUMPER B 877 334 GASKET A 882 974 NYLOCK BOLT W FLANGE M6X12 883 493 GUARD 883 492 NYLOCK HEX SOCKET HD BOLT M8X22 883 490 NOSE 883 505 _ NYLOCK BOLT W FLANGE M8X16 963 837 NYLON NUT M6 883 504 HANDLE ARM GRIP RUBBER 877 331 GASKET D 878 311 CAP 949 658 HEX SOCKET HD BOLT M5X18 10 PCS 872 035 DUST NAME PLATE 949 866 ROLL PIN D3X30 10 PCS 875 650 SAFETY BOLT 877 365 SPRING 878 423 SPRING 883 494 PUSHING LEVER 949 555 M5 10 PCS 875 643 PLUNGER SPRING 874 436 O RING 4 877 338 PLUNGER INCLUD 37 SUPPLIED WITH ITEM NO 602 603 FOR FRA FOR TPE FRA USA CAN sch sch
15. IAL TRIP MECHANISM TYPE ALTERNATIVE PARTS STANDARD ACCESSORIES NR 83AA2 CODE NO DESCRIPTION REMARKS 872 422 HEX BAR WRENCH 6MM 944 459 HEX BAR WRENCH 5MM 944 458 HEX BAR WRENCH 4MM 875 769 EYE PROTECTOR 877 153 PNEUMATIC TOOL LUBRICANT 30CC FOR FRA 882 413 CAUTION TAG FOR USA CAN 882 414 LEAFLET FOR USA CAN OPTIONAL ACCESSORIES CODE NO DESCRIPTION REMARKS 876 762 SEQUENTIAL TRIP MECHANISM KIT 881 768 GRIP TAPE A 880 407 4 ALTERNATIVE PARTS Printed in Japan 3 01 010315N Q Hitachi Koki Co Ltd
16. VA lt Rear Hooking portion Stopper a UM Hex Socket Hd Bolt W Flange M6 x 12 Ribbon Spring 70 Nail Feeder Ass y 69 ES Z Needle Roller D4 x 20 71 S MS Magazine 72 Front Fig 19 27 3 Nail Feeders 65 B 67 and the related parts See Fig 20 Tool required O Roll pin puller 4 mm 0 157 dia a Disassembly O Fix the Nail Feeder Ass y 69 using a V block and pull out the Roll Pin D4 x 40 66 from the top using a roll pin puller 4 mm 0 157 dia Then Nail Feeder A 65 Nail Feeder B 67 and Feeder Spring 68 can be removed b Reassembly Disassembly procedures should be followed in the reverse order Note the following points O Insert the Roll Pin D4 x 40 66 into Nail Feeder B 67 Insert the Feeder Spring 68 into the hole of the Nail Feeder B 67 and compress the Feeder Spring 68 until it is engaged with the protrusion of Nail Feeder A 65 Protrusion 5 A e 69 Nail Feeder Ass y 67 68 Roll Pin D4 x 40 Nail Feeder A Nail Feeder B Feeder Spring Fig 20 11 INSPECTION AND CONFIRMATION AFTER REASSEMBLY Check that Plunger B 54 and Trigger Plunger 59 move smoothly e Check that there is no air leakage from each part e While driving nails with an air pressure of 4 5 kgf cm 63 psi check that there is no idle driving and bending of nails e Recheck the ti
17. as that of the Model NR 83AA valve section is common to the Model NR 83AA Primary differences from the Model NR 83AA are described below e Whole body 9 No washer is used for reduction of parts count The washer of the exhaust cover mounting screw is integrated with the screw e Output section enn The piston driver blade has been newly designed to correspond to the nose shape Owing to the enlargement of the driver blade the driver blade hole in the piston bumper is also enlarged The body handle is wound with a band type grip rubber instead of the racket grip tape Conventional grip tape is supplied as a repair part because the grip rubber cannot be mounted to the body handle by hand The other parts are common to the Model NR 93AA e Driving section 99 All the parts have been newly designed The nail head supporting portion of the nose is widened as shown in Fig 3 same construction as Paslode F 350s to cope with the problem that some of the commercially available nails are apt to clog due to the nail supporting portion is narrow and is apt to wear Two spring supporters are provided to mount the depth adjustment pushing lever kit optional accessory Magazine Section o All the parts have been newly designed The magazine section is simpler than the Model NR 83AA for reduction of parts count o The magazine is changed from top loading type to rear loading type same construction as SENCO FP650
18. ce between the components The lower surface of the Piston lt 4 gt contacts the Piston Bumper lt 9 gt and prevents air leakage If the upper surface of the Piston Bumper lt 9 gt is damaged some air will leak Fig 7 If the trigger and pushing lever are kept pressed 14 The air pressure on the upper surface of the Exhaust Valve lt 2 gt is released and the exhaust valve is pushed upward by the air pressure within the cylinder This opens the Exhaust Vent lt 3 gt and the air pressure in the cylinder is discharged from the nailer Air pressure is discharged from the upper end of the cylinder and the cylinder is pushed upward by the air pressure on the lower surfaces of the flanges and the force of the Cylinder Spring lt 5 gt This closes the upper end of the cylinder and blocks compressed air from entering the cylinder v Valve Exhaust Vent T Valve Exhaust Vent D When the trigger is released the trigger closes and the air pressure within the valve air passage is discharged through Valve Exhaust Vent In addition when the pushing lever is lifted from the wood surface the safety valve closes and the air pressure within the valve air passage is discharged through Valve Exhaust Vent The illustration shows both the trigger and pushing lever released At the time the piston returns any remaining air pressure at the lower end of th
19. e piston is discharged through the clearance between the Piston Bumper lt 9 gt and the Driver Blade lt 7 gt When the air pressure at the upper side NOTE If the clearance were larger the of the piston lowers the air pressure piston would not return if it were within the Return Air Chamber lt 8 gt smaller driving force would be pushes the piston upward decreased Fig 8 When the trigger and or pushing lever are released 15 9 TROUBLESHOOTING GUIDE 9 1 Troubleshooting and Correction Problem Possible cause most common cause Inspection method Remedy 1 Nails cannot be driven lt Nails gt e The magazine is not loaded with specified genuine nails e The magazine is loaded with abnormal nails bent nails abnormal collation other lt Magazine gt e Nail feeder abnormal burrs deformed damaged e Ribbon spring abnormal fatigued damaged Check if the magazine is normally loaded with specified nails Check the nail feeding section for abnormal conditions burrs fatigued deformed damaged e Use specified nails Remove the abnormal nails and load the magazine with normal nails Correct the burred or deformed portion Replace the defective part e Magazine groove too wide or too narrow Nail rail groove width too wide or too narrow Nail groove in the nose abnormal burrs Maga
20. elow The Bold numbers in the descriptions below correspond to the item numbers in the Parts List and exploded assembly diagram CAUTION Before disassembly or reassembly be sure to remove all nails and disconnect the air hose from the nailer with your finger released from the trigger to exhaust all the compressed air 10 1 General Precautions in Disassembly and Reassembly Apply grease SEP 3A Code No 930035 to the O rings and O rings sliding portions When installing the O rings be careful not to damage the O rings and prevent dirt entry Oil required Hitachi pneumatic tool lubricant 1 oz 30 cc oil feeder Code No 877153 4 oz 120 cc oil feeder Code No 874042 1 quart 1 Itr can Code No 876212 f Gasket 5 is damaged replace and check that air is leaking Be especially careful to prevent the entry of foreign particles into the control valve section e Use the conventional grip tape for repair of the Grip Rubber 37 because the Grip Rubber 37 cannot be mounted without the specifically designed jig Tightening torque for each part Bot NAE Nylock Hex Socket Hd Bolt M8 x 22 32 30 4 2 310 20 22 4 1 4 Nylock Bolt W Flange 8 x 16 34 25 5 1 260 10 18 8 0 7 Hex Socket Hd Bolt W Flange 6 45 1 12 7 0 8 130 8 9 4 0 6 Nylock B
21. f Sf Nep ee Me GEN EE E ee oe I TA A I 1400 lt 100 I 100 yf I I I i I I I I I l i I 420 4J 4 Si MES i 4 de 1200 I l I 1200 1 I I I 4 R l I I I 80 80 I I I ve 16 00 r fFd4 4d r 1 10 00 pure c l 4 NR83Aa2 v 1 l l I I I I I 60 800 SO Spee BO 800 tacos s mug I I I I I I I I I I I I I I I I I I I I E l 1 200 300 400 mm 4 5 6 7 8 bar 5 0 3 0 4 0 5 0 6 4 5 6 7 8 kgf cm _ 5 60 70 80 90 100 110 120 127 PSi 5 Air pressure setting to drive nail flush with NR 83AA2 N dx L mm x mm d 3 3 mm x 83 mm 0 131 x 3 1 4 Fig 2 Required nailing energy and nailer output energy 5 4 Optional Accessories 1 Sequential trip mechanism kit Single shot Code No 876762 A sequential trip mechanism kit is provided as an optional accessory for the Model NR 83AA2 By using this optional accessory a nail is driven by pressing the push lever first against a workpiece and then pulling the trigger single shot operation and no nail is driven when pulling the trigger first and then pressing the push lever against a workpiece Please recommend the sequential trip mechanism kit t
22. ghtening torque of each screw Check that Pushing Lever 46 slides smoothly Check that the machine will not operate only by actuating Trigger 53 Also check that the machine will not operate only by depressing Pushing Lever 46 99 12 STANDARD REPAIR TIME UNIT SCHEDULES MODEL Variable Fixed 10 20 30 40 50 60 min General Assembly Work Flow Top Cover Exhaust Cover Gasket x 3 Exhaust Piece Exhaust Valve Head Cap and Gasket Set Pushing Lever Spring Plunger Spring Plunger A Valve Bushing Trigger Plunger B O ring x Valve Packing O ring x 2 Trigger Valve Bushing Trigger Plunger Piston O ring 1AP 48 Adjustment Cylinder Body Tail Cover Magazine Magazine Cover Ribbon Spring Nail Feeder Ass y Cylinder Plate Cylinder Cylinder Spring O ring x 7 Piston Bumper B Adjustment Valve Return Valve Body Ass y 29 LIST NO E001 HITACHI PNEUMATIC TOOL PARTS LIST 5 N N lt 55 lt 2 3 ro 0 SN Y 0 Q Gye3 0 3 PARTS NR 83AA2 CODE NO DESCRIPTION REMARKS 883 509 HEX SOCKET HD BOLT W FLANGE M6X45 877 330 TOP COVER 883 507 HEX SOCKET HD BOLT W SP WASHER M6X25 877 324 EXHAUST COVER 877 325 GASKET
23. h 5 mm a Disassembly O Perform disassembly according to 10 2 3 to remove the Nose 33 Pushing Lever 46 and the other parts O Remove the Nose Rubber 61 from the Nose 33 by stretching the Nose Rubber 61 with a thin rod b Reassembly Disassembly procedures should be followed in the reverse order Note the following points Be careful of the mounting direction of the Nose Rubber 61 Mount the Nose Rubber 61 aligning with the shape of the Nose 33 O Hook the Spring 45 in the mm dia hole of the Nose 33 aligning with the shape of the Pushing Lever 46 The Nose 33 has two 3 mm dia holes one is for hooking the Spring 45 and the other is for the depth adjustment pushing lever kit optional accessory Do not insert a roll pin into the other 3 mm dia hole This hole is for the depth adjustment pushing lever kit optional accessory Nose Rubber 61 Nylock Hex Socket Hd Bolt M8 x 22 32 Safety Bolt 44 Spring 45 Nose 33 Pushing Lever 46 Nut M5 47 3 mm dia hole 26 2 Magazine 72 Nail Feeder Ass y 69 and the related parts See Fig 19 Tool required O Hexagon bar wrench 5 mm a Disassembly O Perform disassembly according to 10 2 3 to remove the entire magazine section O Remove a screwdriver or a rod from the the stopper hole for the Nail Feeder Ass y 69 Then the Nail Feeder Ass y 69 Ribbon Spring 70 and Needle Roller D4 x 20 71 can be
24. ls clog the mechanism Unspecified nails used Improper nail feed gt See Magazine in item 1 Check if the nails are specified ones Check if they move smoothly after putting nails and check if the nail feeder operates smoothly See Magazine in item 1 e Driver blade worn The driver blade has not returned completely gt See lt Output section Piston driver blade etc gt in item 1 Check if the driver blade tip is worn e Perform idle driving or actually drive with nails and check if the driver blade has returned completely e Replace the part Regrind See 9 2 Regrinding the Driver Blade See Output section Piston driver blade etc in item 1 cuz 9 2 Regrinding the Driver Blade The tip of the driver blade should be ground as shown in Fig 9 To grind with a grinder gradually grind the tip while cooling the ground area with water to prevent it from being excessively heated Excessive grinding will rapidly reduce the service life of the driver blade In such a case replace the driver blade Driver blade Concave Grinding surface Fig 9 9 3 Possible Causes and Corrections of Air Leakage Air leakage repair location 18 Inspection priorities In the table below possible causes of air leakage and their repair procedures are marked in accordance with the likelihood of possible failure
25. ls in a slanting direction The change on the shape of claw has also been applied to the current Model NR 83AA from the production of May 2000 The Model 83AA2 is far superior to Paslode F350S and SENCO FP650 in nail driving comfort and ease of operation Please expand our market share with the new Model NR 83AA2 3 APPLICATIONS e Floor and wall framing e Truss build up window build up Subflooring and roof decking e Wall sheathing e Mobile home and modular housing construction 4 SELLING POINTS Rubber grip Rear loading Rapid driving and magazine quick response 5 SPECIFICATIONS 5 1 Specifications Model NR 83AA2 Driving system Reciprocating piston type Operating pressure 5 8 5 kgf cm 70 120 psi 4 9 8 3 bar Gauge pressure Driving speed 3 pcs sec Weight 3 8 kg 8 4 16 Dimensions 460 mm x 360 mm x 108 mm Length x Height x Width 18 1 8 x 14 3 16 x 4 1 4 Nail feed system Spiral spring Nail capacity 86 to 94 nails Air consumption 2 5 Itr cycle at 7 kgf cm 0 088 ft cycle at 100 psi 2 5 Itr cycle at 6 9 bar Air inlet 3 8 NPT thread Packaging Corrugated cardboard box Package dimensions 490 mm x 430 mm x 132 mm Length x Height x Width 19 5 16 x 16 15 16 x 5 3 16 Hex bar wrench for M5 screw Code No 944458 e Standard accessories e Hex bar wrench for 6 screw Code No 944459 Rm e He
26. n to the following items O Confirm that Gasket G 23 is reassembled O Check that the Base Washer 21 is securely and properly mounted to its position in the Body Ass y 26 Then mount the other parts Hex Socket Hd Bolt W SP Washer M6 x 25 3 Exhaust Cover 4 Cylinder Plate 15 vu socket Hd Bolt W SP Washer M6 x 25 3 Piston 12 Cylinder 17 Cylinder Plate 15 Threaded hole for M6 bolts Gasket B 5 Body Ass y 26 o4 d gi Piston 12 ES Spring Washer 21 Cylinder Guide 22 Cylinder Plate 15 Gasket 23 Cylinder 17 x Pi E Oylinder Ring 19 Es 2 Head and Gasket Set 10 Exhaust Piece 7 and related parts See 13 Tool required Hex Socket Hd Bolt O Hexagonal bar wrench 5 mm W Flange M6 x 45 1 a Disassembly Top Cover 2 lt O Remove the Exhaust Cover 4 as described in section 10 2 1 Hex Socket Hd Bolt Loosen the three Hex Socket Hd Bolts W Flange W SP Washer M6 x 25 3 6 x 45 1 and as illustrated in Fig 13 remove the Head Cap and Gasket Set 10 Exhaust Valve 9 Exhaust Cover 4 Exhaust Piece 7 Gasket C 8 and Gasket F 6 b Reassembly tn 5 Reassembly can be accomplished by following the Gasket F 6 disassembly procedures in reverse However special attention should be given to the following items Exhaust Piece 7 O Ga
27. ngth No spring washer Spring washer 2 M8 x25 Z Hex Socket Hd Bolt W Flange M6 x 45 1 for mounting the Top Cover 2 Hex Socket Hd Bolt W Flange M6 x 45 1 x 45 Spring washer a S Cover 2 Hex Socket Hd Bolt W SP Washer M6 x 25 3 for mounting the Exhaust Cover 4 Hex Socket Hd Bolt W SP Washer M6 x 25 3 M6 x 25 5 Spring washer _ yz Exhaust Cover 4 E E ER 8 3 Operation Principle The operation of the Model NR 83AA2 is illustrated and described in Fig 5 through 8 The circled numbers in the descriptions correspond to the item numbers shown in the mechanism illustrated in Fig 4 In Fig 6 and Fig 8 read the descriptions in alphabetical order Air pressure is applied to the lower surface of the flanges located at the center portion of the Cylinder lt 6 gt forcing the cylinder upward The compressed air is thereby blocked from the upper end of the cylinder and no pressure is applied to the piston The Accumlator lt 1 gt fills with compressed air The trigger and pushing lever are not operated and remain closed The exhaust vents are opened and no air pressure is applied to the valve air passage Fig 5 When the compressed air source air hose is connected to the nailer 12 Compressed air is applied EM the upper side of the Although
28. o the customers who want to use it Salespersons must instruct the customers to read the Handling Instructions attached to the sequential trip mechanism kit and also the Handling Instructions of the Model NR 83AA2 thoroughly for correct use 2 Depth adjustment pushing lever kit Code No 883512 The depth adjustment pushing lever kit is available as an optional accessory of the Model NR 83AA2 to adjust the nail driving depth the adjustment procedure is the same as the current Models NR 90AC and NV 65 Salespersons must instruct the customers to read the Handling Instructions attached to the depth adjustment pushing lever kit and also the Handling Instructions of the Model NR 83AA2 thoroughly for correct use 1 KS uc 2 1 2 aZ 1 8 ue 1 8 Sa aZ 06 ww 09 Q6 OG g WW OG g 06 S eu 8PL O LEE O LEL 0 ES LL 0 LEL 0 7 SLL O LEL O E ge 6 2 ww g g WW EE g g WW 62 095 ssejjoo 0 9 59 euondo jueunsn pe Duipeo ea dot adh S60 0 eioAo c 260 0 880 0 880 0 isd 001 Z SOU Z 2 1 9 2 ejoKo n SO S Z ye uonduunsuoo 9 X
29. olt W Flange M6 x 12 30 12 7 0 8 130 8 9 4 0 6 Hex Socket Hd Bolt W SP Washer M6 x 25 3 9 8 0 8 100 8 7 2 0 6 Hex Socket Hd Bolt W Flange M6 x 12 74 9 8 0 8 100 8 7 2 0 6 Hex Socket Hd Bolt M5 x 18 40 8 3 0 5 85 5 6 1 0 4 20 10 2 Disassembly and Reassembly of the Output Section 1 Piston 12 Cylinder 17 and related parts Tool required O Hexagon bar wrench 5 mm a Disassembly See Figs 10 11 and 12 Remove the four Hex Socket Hd Bolts W SP Washer M6 x 25 3 and take off the Exhaust Cover 4 The Piston 12 can then be taken out O Next as illustrated in Fig 11 screw two of the previously removed Hex Socket Hd Bolts W SP Washer M6 x 25 3 into the provided holes on the Cylinder Plate 15 Gripping these two bolts simultaneously turn and pull upward to remove the Cylinder Plate 15 When this has been accomplished the Cylinder 17 and other parts which make up the output section can be removed as illustrated in Fig 12 O lf it is difficult to remove the Cylinder 17 remove the Nose 83 by referring para 10 2 3 procedures and push out the Cylinder 17 from the lower part of the main body b Reassembly Reassembly can be accomplished by following the disassembly procedures in reverse However special attention should be give
30. r to the leaflet attached together with the Instruction Manual for details 7 1 Instruction Manual Although every effort is made in each step of design manufacture and inspection to provide protection against safety hazards the dangers inherent in the use of any pneumatic tool cannot be completely eliminated Accordingly general precautions and suggestions for use of pneumatic tools and specific precautions and suggestions for the use of the pneumatic nailer are listed in the Instruction Manual to enhance the safe efficient use of the tool by the customer Salespersons must be thoroughly familiar with the contents of the Instruction Manual to be able to offer appropriate guidance to the customers during sales promotion 7 2 Warning Label Each Model NR 83AA2 unit is provided with a Warning Label illustrated below which lists basic safety precautions in its use Carefully ensure that customers fully understand and follow these precautions before using the tool A DANGER READ AND UNDERSTAND INSTRUCTION AND SAFETY MANUAL before use Failure to follow instructions WILL RESULT IN SERIOUS INJURY OR DEATH eOperator and others in work area MUST WEAR ANSI REQUIRED 287 1 EYE PROTECTOR WITH SIDE SHIELDS NEVER USE BOTTLED GASES Use regulated air only DO NOT EXCEED 120psi 8 3bar NEVER CARRY WITH FINGER ON TRIGGER DISCONNECT AIR before servicing unjamming or when not in use 315808 The following label is adhered to
31. sket C 8 and Gasket F 6 should be replaced Gasket C 8 with new genuine Hitachi parts Exh Valve 9 O Apply the designated grease to the outer circumference raust Valve 9 Head Cap and of the Exhaust Valve 9 prior to reassembly Gasket Set 10 Fig 13 Disassembly of main body upper part 22 3 Piston Bumper B 28 Gasket 29 and related parts See Figs 14 and 15 Tools required O Hexagon bar wrench 5 mm 6 mm O Roll pin puller mm 0 118 dia Screwdriver a Disassembly Pull out the Roll Pin D3 x 30 43 and remove the Nylock Bolt W Flange M6 x 12 30 to remove the Guard 31 Pull the Nail Feeder Ass y 69 backward and insert a screwdriver or a rod into the stopper hole for the Nail Feeder Ass y 69 as shown in Fig 15 This is to prevent the Nail Feeder Ass y 69 from moving forward when removing the Magazine 72 O Remove the Nylock Bolt W Flange M8 x 16 34 and pull out the entire magazine section backward O Remove the four Nylock Hex Socket Hd Bolts M8 x 22 32 Then Piston Bumper B 28 and Gasket A 29 can be removed together with the Nose 33 b Reassembly Disassembly procedures should be followed in the reverse order Note the following points Plunger B 54 is apt to come off during disassembly Be sure to check that Plunger B 54 is securely mounted during reassembly O Pressing the Magazine 72 against the Nose 33 secure them
32. the Model 83AA2 for Europe to prohibit the use of the Model NR 83AA2 standing on a stepladder Carefully ensure that customers fully understand and follow the precaution before using the tool 7 3 Related Laws and Regulations As nailers and staplers are designed to instantaneously drive nails and staples there is an ever present danger of misfiring and subsequent possible serious injury Accordingly close attention in handling is absolutely necessary at all times Carefully ensure that the customer is fully aware of the precautions listed in the Instruction Manual provided with each unit While there are no specific safety regulations there are related items in various general safety regulations with which the salespersons should be familiar in order to properly advise the customer Please check your national and or local regulations for applicable items Some applicable items are outlined below The U S A OSHA 1926 102 Eye and face protection 1926 302 Power operated hand tools ANSI SNT 101 1993 Portable Compressed Air Actuated Fastener Driving Tools Safety Requirements for 8 MECHANISM AND OPERATION PRINCIPLE 8 1 Mechanism As illustrated in Fig 4 the Model NR 83AA2 can be generally divided into four sections output section control valve section driving section and magazine section The driving section nose and piston and the magazine section have been newly designed though its basic construction is the same
33. with the Nylock Bolt W Flange M8 x 16 34 with a minimum clearance between the Magazine 72 and the Nose 83 OMount the Roll Pin x 30 43 without fail Roll Pin D3 x 30 43 a Plunger B 54 Nylock Bolt W Flange M8 x 16 34 Body Ass y 26 CD Piston Bumper B 28 lt Gasket A 29 Nylock Bolt W Flange M6 x 12 90 Guard 31 Nylock Hex Socket Hd Bolt M8 x 22 32 Nose 33 Magazine 72 zog Insert a bar such as screwdriver into this hole Fig 15 24 10 3 Disassembly and Reassembly of the Control Valve Section Tools required Roll pin puller 3 mm 0 118 dia Minus hd screwdriver a Disassembly See Fig 16 O Remove the Magazine 72 as described in section 10 2 3 Remove the Pushing Lever 46 as described in section 10 2 3 With the roll pin puller 3 mm 0 118 dia take out the Roll Pin D3 x 30 43 and remove the Trigger 53 Trigger Plunger 59 and Plunger B 54 Insert the minus hd screwdriver into the groove of the Trigger Valve Bushing 58 and loosen it by turning it to the left being careful not to damage the groove After removing the Trigger Valve Bushing 58 pull down strongly on the Valve Bushing 51 to remove the Valve Bushing 51 Plunger A 50 and the Plunger Spring 48 Go Valve Plate 57 B occ aae Valve Bushing 58 P Plunger Spring 48 9 Plunger
34. x bar wrench for M8 screw Code No 872422 Eye protector Code No 875769 Sequential trip mechanism kit Single shot Code No 876762 Optional accessories Depth adjustment pushing lever kit Code No 883512 Pneumatic tool lubricant 1 oz oil feeder Code No 877153 Pneumatic tool lubricant 4 oz oil feeder Code No 872042 Pneumatic tool lubricant 1 quart can Code No 876212 5 2 Nail Selection The Model NR 83AA2 utilizes D head clipped head nails collated with paper tape Applicable nail dimensions are shown below Please note that screw type nails cannot be used with the Model NR 83AA2 CAUTION Ensure that nails are as specified in Fig 1 The Model NR 83AA2 utilizes D head clipped head nails collated at an angle of 34 degrees which are the same as the nails utilized by a competitor s model Paslode However some D head nails made by other makers are collated at a different angle of 26 degrees Use of such nails will cause clogging of nails and subsequent damage to the nailer Also avoid use of misaligned nails or nails collated with a weak paper tape It is recommended to use genuine HITACHI nails to ensure satisfactory driving quality Paper tape collated strip nails D head clipped head nails Minimum Maximum 6 8 mm 7 1 0 266 0 280 amp TE S 0 113 0 131 33 mm x 83 mm nails 0 13
35. zine cover abnormal deformed damaged xe Adhesive fragments and wood chips are on the magazine nail feeder or nail rail lt Output section Piston driver blade etc gt e Air pressure too low Piston ring worn Piston O ring worn Piston bumper abnormal Cylinder ring abnormal dislocated deformed damaged e Driver blade abnormal deformed burrs damaged e Cylinder s internal surface abnormal deposites of dirt worn lt Pushing lever gt Pushing lever incorrectly adjusted e Check if they move smoothly after putting nails and check if the nail feeder oeprates smoothly Keep the nail feeder ass y pulling backward and perform idle driving Then check that the driver blade returns to its original position e Check if nails can be driven at 5 kgf cm 4 9 bar 70 psi Check adjustment Replace the defective part Replace the defective part Replace the defective part Replace the defective part After removing the adhesive fragments and wood chips apply oil to the nail rail and magazine Adjust for 5 to 8 5 kgf cm 4 9 8 3 bar 7 120 psi Replace the Piston O ring Replace the piston bumper Reassemble or replace Touch up or replace After removing the dirt apply oil or replace Adjust the protruded amount within 3 5 0 5 mm 0 138 0 02
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