Hitachi NR 83AA2, Technical Data And Service Manual

Page 1: ...POWER TOOLS TECHNICAL DATA AND SERVICE MANUAL STRIP NAILER NR 83AA2 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT LIST No E001 May 2001 N MODEL NR 83AA2 ...

Page 2: ... 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 Symbols Utilized Competitors Company Name Model Name SENCO FP650 R PASLODE P350S Y ...

Page 3: ...ty 11 8 3 Operation Principle 12 9 TROUBLESHOOTING GUIDE 16 9 1 Troubleshooting and Correction 16 9 2 Regrinding the Driver Blade 18 9 3 Possible Causes and Corrections of Air Leakage 18 10 DISASSEMBLY AND REASSEMBLY 20 10 1 General Precautions in Disassembly and Reassembly 20 10 2 Disassembly and Reassembly of the Output Section 21 10 3 Disassembly and Reassembly of the Control Valve Section 25 1...

Page 4: ...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 ...

Page 5: ... 430 mm x 132 mm 19 5 16 x 16 15 16 x 5 3 16 Hex bar wrench for M5 screw Code No 944458 1 Hex bar wrench for M6 screw Code No 944459 1 Hex bar wrench for M8 screw Code No 872422 1 Eye protector Code No 875769 1 Sequential trip mechanism kit Single shot Code No 876762 Depth adjustment pushing lever kit Code No 883512 Pneumatic tool lubricant 1 oz oil feeder Code No 877153 Pneumatic tool lubricant 4...

Page 6: ...or 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 6 8 mm 0 266 2 9 mm 0 113 51 mm 2 Minimum...

Page 7: ...or 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 cm2 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 val...

Page 8: ...omers 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 ...

Page 9: ...f cm 2 70 120 psi 425 mm x 360 mm x 108 mm 16 3 4 x 14 3 16 x 4 1 4 NR 83AA 2 5 ltr cycle 0 088 ft 3 cycle 80 nails Top loading 3 8 kg 8 4 lbs None None Racket grip 50 mm 83 mm 2 3 1 4 2 9 mm 3 3 mm 0 113 0 131 5 5 8 5 kgf cm 2 80 120 psi 465 mm x 330 mm x 114 mm 18 5 16 x 13 x 4 1 2 2 6 ltr cycle 0 092 ft 3 cycle 84 nails Top loading 3 7 kg 8 2 lbs With wrench 360 With wrench Rubber 50 mm 90 mm 2...

Page 10: ...customers who want to use it Refer 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...

Page 11: ...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 Dri...

Page 12: ...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 Driving section All the parts have been newly designed The nail head supporting portion of the nose is wide...

Page 13: ... Spring 5 Return Air Chamger 8 Driver Blade 7 Cylinder 6 Piston 4 Piston Bumper 9 Nose 10 Firing gate Pushing lever Accumulator 1 Control valve section Exhaust cover Exhaust piece Trigger valve portion Grip rubber Nail stopper Magazine Nail feeder ass y Magazine section Safety valve portion Driving section Output section Exhaust Valve 2 ...

Page 14: ...ns of the Model NR 83AA2 have been newly designed The output section and the control valve section are interchangeable except the following parts Hex Socket Hd Bolt W Flange M6 x 45 1 for mounting the Top Cover 2 Nose 33 Nylock Hex Socket Hd Bolt M8 x 22 32 Short length No spring washer Hex Socket Hd Bolt W Flange M6 x 45 1 Top Cover 2 Hex Socket Hd Bolt W SP Washer M6 x 25 3 Exhaust Cover 4 M8 fe...

Page 15: ...he compressed air source air hose is connected to the nailer Air pressure is applied to the lower surface of the flanges located at the center portion of the Cylinder 6 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 1 fills with compressed air The trigger and pushing lever are not operated...

Page 16: ...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 Compressed air is applied to the upper side of the Exhaust Valve 2 forcing it downward and closing the Exhaust Vent 3 A...

Page 17: ...he position illustrated The lower surface of the Piston 4 contacts the Piston Bumper 9 and prevents air leakage If the upper surface of the Piston Bumper 9 is damaged some air will leak At there is no o ring installed here a very small amount of air will leak from the slight clearance between the components If the operator s grip is loosened air will leak ...

Page 18: ... remaining air pressure at the lower end of the piston is discharged through the clearance between the Piston Bumper 9 and the Driver Blade 7 When the air pressure at the upper side of the piston lowers the air pressure within the Return Air Chamber 8 pushes the piston upward NOTE If the clearance were larger the piston would not return if it were smaller driving force would be decreased When the ...

Page 19: ...ring abnormal fatigued damaged Magazine groove too wide or too narrow Nail rail groove width too wide or too narrow Nail groove in the nose abnormal burrs Magazine cover abnormal deformed damaged Adhesive fragments and wood chips are on the magazine nail feeder or nail rail Replace the defective part Replace the defective part Replace the defective part Replace the defective part Cylinder s intern...

Page 20: ...s not designed for such usage Adjust for 5 to 8 5 kgf cm2 4 9 8 3 bar 70 120 psi Unusable because the tool is not designed for such usage Replace the part Regrind See 9 2 Regrinding the Driver Blade Replace the defective part Replace the defective part Use specified nails See Magazine in item 1 Replace the part Regrind See 9 2 Regrinding the Driver Blade See Output section Piston driver blade etc ...

Page 21: ... 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 5 Grinding surface Fig 9 9 3 Possible Causes and Corrections of Air Leakage Air leakage repair location A B C G D E F ...

Page 22: ...roken Loose Hex Socket Hd Bolt M5 x 18 40 Broken Gasket D 38 Defective seal surface of the Body Ass y 26 or Cap 39 Defective Exhaust Valve 9 worn deformed or broken Exhaust vent Air leak part Cause When trigger valve safety valve are OFF When trigger valve safety valve are ON Inspection priorities In the table below possible causes of air leakage and their repair procedures are marked in accordanc...

Page 23: ...icant 1 oz 30 cc oil feeder Code No 877153 4 oz 120 cc oil feeder Code No 874042 1 quart 1 ltr can Code No 876212 If Gasket B 5 is damaged replace it and check that no air is leaking Be especially careful to prevent the entry of foreign particles into the control valve section Use the conventional grip tape for repair of the Grip Rubber 37 because the Grip Rubber 37 cannot be mounted without the s...

Page 24: ...nd other parts which make up the output section can be removed as illustrated in Fig 12 If it is difficult to remove the Cylinder 17 remove the Nose 33 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 given to the fo...

Page 25: ...ig 13 remove the Head Cap and Gasket Set 10 Exhaust Valve 9 Exhaust Piece 7 Gasket C 8 and Gasket F 6 b Reassembly Reassembly can be accomplished by following the disassembly procedures in reverse However special attention should be given to the following items Gasket C 8 and Gasket F 6 should be replaced with new genuine Hitachi parts Apply the designated grease to the outer circumference of the ...

Page 26: ...ine section backward 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 Pressing the Magaz...

Page 27: ... 24 Nail Feeder Ass y 69 Insert a bar such as a screwdriver into this hole Fig 15 ...

Page 28: ...Trigger Valve Bushing 58 Valve Plate 57 Roll Pin D3 x 30 43 Plunger B 54 b Reassembly Reassembly can be accomplished by following the disassembly procedures in reverse However special attention should be given to the following items 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 dam...

Page 29: ...r 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 Hook the Spring 45 in the 3 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...

Page 30: ...n the reverse order Note the following points 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 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 t...

Page 31: ...l Feeder B 67 and compress the Feeder Spring 68 until it is engaged with the protrusion of Nail Feeder A 65 Nail Feeder Ass y 68 69 66 67 65 Roll Pin D4 x 40 Feeder Spring Nail Feeder B Nail Feeder A Protrusion Hole Fig 20 11 INSPECTION AND CONFIRMATION AFTER REASSEMBLY Check that Plunger B 54 and Trigger Plunger 59 move smoothly Check that there is no air leakage from each part While driving nail...

Page 32: ...ULES MODEL 10 20 30 40 Fixed Variable NR 83AA2 Work Flow Top Cover Exhaust Cover Gasket x 3 Exhaust Piece Exhaust Valve Head Cap and Gasket Set 60 min 50 Tail Cover Magazine Magazine Cover Ribbon Spring Nail Feeder Ass y Pushing Lever Spring General Assembly Adjustment Cylinder Body Cylinder Plate Cylinder Cylinder Spring O ring x 7 Piston Bumper B Body Ass y Adjustment Valve Return Valve ...

Page 33: ... 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 13 13 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 35 43 52 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 74 501 502 503 504 505 506 507 76 77 78 79 80 81 ...

Page 34: ... 1 22 877 310 CYLINDER GUIDE 1 23 877 327 GASKET G 1 24 878 184 WARNING LABEL 1 25 878 183 WARNING LABEL 1 FOR FRA 26 883 506 BODY ASS Y 1 INCLUD 37 27 877 315 CYLINDER O RING I D 63 9 1 28 883 511 PISTON BUMPER B 1 29 877 334 GASKET A 1 30 882 974 NYLOCK BOLT W FLANGE M6X12 1 31 883 493 GUARD 1 32 883 492 NYLOCK HEX SOCKET HD BOLT M8X22 4 33 883 490 NOSE 1 34 883 505 NYLOCK BOLT W FLANGE M8X16 1 ...

Page 35: ... COVER 1 65 883 502 NAIL FEEDER A 1 66 949 688 ROLL PIN D4X40 10 PCS 1 67 883 501 NAIL FEEDER B 1 68 883 441 FEEDER SPRING 1 69 883 500 NAIL FEEDER ASS Y 1 INCLUD 65 68 70 883 503 RIBBON SPRING 1 71 943 364 NEEDLE ROLLER D4X20 1 72 883 495 MAGAZINE 1 73 LABEL 1 74 984 443 HEX SOCKET HD BOLT W FLANGE M6X12 3 75 883 498 NAIL STOPPER 1 76 882 408 PLUNGER SPRING S 1 FOR SEQUENTIAL TRIP MECHANISM TYPE ...

Page 36: ...ted in Japan 010315N 3 01 501 872 422 HEX BAR WRENCH 6MM 1 502 944 459 HEX BAR WRENCH 5MM 1 503 944 458 HEX BAR WRENCH 4MM 1 504 875 769 EYE PROTECTOR 1 505 877 153 PNEUMATIC TOOL LUBRICANT 30CC 1 FOR FRA 506 882 413 CAUTION TAG 1 FOR USA CAN 507 882 414 LEAFLET 1 FOR USA CAN 601 876 762 SEQUENTIAL TRIP MECHANISM KIT 1 602 881 768 GRIP TAPE A 1 603 880 407 TAPE 1 ...

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