Senco COIL NAILERS SCN65 Service Manual

COIL NAILERNV 83A2LIST No. E007 Oct. 2002POWER TOOLSTECHNICAL DATAANDSERVICE MANUALSPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMP

--- 7 ---6. COMPARISONS WITH SIMILAR PRODUCTSMakerAir consumptionat 7 kgf/cm2 (100 psi)Operating pressureTrigger valveDriving depthadjustment mechanis

--- 8 ---7. PRECAUTIONS IN SALES PROMOTIONIn the interest of promoting the safest and most efficient use of the Model NV 83A2 Nailer by all of our cus

--- 9 ---7-4. Precautions in Operation(1) Pay special attention to the pressure, capacity and piping of the air compressor in order to keep the airpre

--- 10 ---8. MECHANISM AND OPERATION PRINCIPLE8-1. MechanismAs illustrated in Fig. 3, the Model NV 83A2 can be generally divided into four sections:ou

--- 11 ---Pisotn Bumper (B) [29]Tail Cover [31]Nail Guide [95]Part NV 83A2 NV 83A8-2. Interchangeability of PartsThe driving section and the magazine

--- 12 ---Pushing Lever [54]Part NV 83A2 NV 83ABent.Welded.Cover [105]

--- 13 ---8-3. Operation Principle(1) When the compressed air source (air hose) is connected to the nailer:Fig. 4Air pressure is applied to the lower

--- 14 ---Fig. 5Although air pressure is appliedto both the upper and lowersurfaces of the cylinder, thecylinder is forced downward dueto the larger e

--- 15 ---Fig. 6Air pressure is applied in the shaded areasin the illustration, and each component isheld in the position illustrated.The lower surfac

--- 16 ---Fig. 7The pressure on the upper surface of the exhaust valve is released, andthe exhaust valve is pushed upward by the air pressure within t

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)

--- 17 ---Deburr the nail guide face.Correct the deformed parts.Replace the abnormal parts.ProblemPossible cause( : Most-common cause)Inspection me

--- 18 ---Rremove dust and thenlubricate.Replace the piston O-ring.Correct or replace the parts. Air leaks from Gasket (A). O-rings are worn or

--- 19 --- Driver blade is worn.ProblemPossible cause( : Most-common cause)Inspection method Remedy Cylinder inside surface is abnormal

--- 20 ---Apply grease.Apply grease.Replace the abnormal part.Readjust the safety boltaccording to 10-3-(2). Short of oil on both inside and outside

--- 21 ---<Driver blade is not returned completely.>See item "1) Outputsection: piston, driverblade, etc.".ProblemPossible cause(

--- 22 ---9-2. Possible Causes and Corrections of Air LeakageAir leakage repair locationABCDGHIAA --- AEFA

--- 23 ---Inspection priorities:In the table below, possible causes of air leakage and their repair procedures are marked in accordance with thelikeli

--- 24 ---Defective seal surface of Tail Cover [31] andFeed Piston Cover [75]Defective O-ring [71] of Feed Piston [70](worn, deformed or cut)Defective

--- 25 ---30.4 2 (310 20, 22.4 1.4)Tightening torqueN•m (kgf•cm, ft-lb)8.3 0.5 (85 5, 6.1 0.4)8.3 0.5 (85 5, 6.1 0.4)2.9

--- 26 ---10-2. Disassembly and Reassembly of the Output Section(1) Piston (H) [12], Cylinder [17] and related partsTool required:Hexagon bar wrench (

PageCONTENTS1. PRODUCT NAME ...12. M

--- 27 ---Cylinder Spring [20]Cylinder Ring [19]Base Washer [21]Cylinder Guide [22]O-Ring [11]Gasket (G) [23]Cylinder Plate [15]Body (B) [27]Head Cap

--- 28 ---Be very careful in handling the Plunger Spring [56],as it can become twisted very easily.To prevent the two O-rings on the outside of theVal

--- 29 ---10-4. Disassembly and Reassembly of the Magazine SectionDeform Guard [80] by insertinga flat-blade screwdriver.Engaged.Tools required:Philli

--- 30 ---Fig. 15 Disassembly and reassembly of the magazine section(b) ReassemblyDisassembly procedures should be followed in the reverse order. No

--- 31 ---(2) Disassembly and reassembly of nail holder, holder shaft, etc.(a) DisassemblyPull out the two Pins [82] with a roll pin puller (4 mm dia.

--- 32 ---10-5. Disassembly and Reassembly of the Driving SectionFig. 17 Disassembly and reassembly of the driving sectionPiston Bumper (B) [29]Body

--- 33 ---(1) Tail Cover [31], Pushing Lever [54] and the related parts (See Fig. 17.)Tools required:Hexagon bar wrench (6 mm)Roll pin puller (3 mm (0

--- 34 ---(2) Disassembly and reassembly of Piston Bumper (B) [29], Feeder Set [35], Feed Piston [70] and other parts(See Fig. 24.)Tools required:Flat

--- 35 ---(4) Disassembly and reassembly of Nail Guide [95], Sub Nail Stopper [92], Feeder Set [35] and other parts (See Fig. 19.)Tools required:

--- 36 ---(b) ReassemblyDisassembly procedures should be followed in the reverse order. Note the following points.Before reassembly, remove dust from

--- 1 ---1. PRODUCT NAMEHitachi 83 mm Coil Nailer, Model NV 83A22. MARKETING OBJECTIVEThe current Model NV 83A is a well-reputed 3-1/4 coil nailer sui

--- 37 ---11. INSPECTION AND CONFIRMATION AFTER REASSEMBLYCheck that Safety Plunger (B) [61] and Trigger Plunger [68] move smoothly.Check that there i

--- 38 ---Trigger PlungerTrigger ValveBushingSafety Plunger(B)Valve BushingPlunger (A)Plunger SpringPlunger O-ringx 2O-ring x 3Piston (H)O-ringPushing

PNEUMATIC TOOL PARTS LISTLIST NO.COIL NAILERModel NV 83A22002 • 10 •15(E1) E00712345678910111213141516171819202113221323242526272829303132333435

* ALTERNATIVE PARTS--- 2 ---ITEMNO.CODE NO.DESCRIPTION REMARKSNO.USEDPARTS10 -- 02NV 83A21 883-509 HEX. SOCKET HD. BOLT (W/FLANGE) M6X45 32 877-330 T

* ALTERNATIVE PARTS --- 3 ---ITEMNO.CODE NO.DESCRIPTION REMARKSNO.USEDPARTS10 -- 02NV 83A251 875-650 SAFETY BOLT 152 884-027 VALVE GUARD 153 884-025

* ALTERNATIVE PARTS --- 4 ---10 -- 02PARTSITEMNO.CODE NO.DESCRIPTION REMARKSNO.USEDNV 83A2OPTIONAL ACCESSORIESITEMNO.CODE NO.DESCRIPTION REMARKSNO.US

--- 2 ---(1) Output sectionThe basic construction is the same as that of the Model NV 83A except the 2-valve cylinder drive system thatis well reputed

--- 3 ---Optional accessoriesNail capacity3.7 kg (8.2 lbs.)2.4 ltr/cycle at 7 kgf/cm2 (.085 ft3/cycle at 100 psi) (2.4 ltr/cycle at 6.9 bar)Corrugated

--- 4 ---5-2. Nail SelectionThe Model NV 83A2 utilizes common round-head nails collated by wire or sheet into coils from 200 to 300 pieces.Applicable

--- 5 ---5-3. Nail Driving ForceFig. 2 shows by type of wood and nail, the nailer output energy provided by the supply pressure and the nailingenergy

--- 6 ---5-4. Optional AccessoriesSequential trip mechanism kit (Single shot) (Code No. 876762)A sequential trip mechanism kit is provided as an optio