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Model MARKETING OBJECTIVE The new Model NV 65HMC is a high-pressure type [2-1/2" (65 mm)] of coil nailer. High-pressure nailer series products have already been introduced to the Japanese market and become popular nationwide. This new product offers higher punching force about three times greater than that of conventional nailers, in order to reduce its size and weight.
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REMARK: • For more information about HANDLING INSTRUCTIONS, visit our website at: http://www.hitachi-koki.com/manual_view_export/ • 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:...
1. Safety Instructions ----------------------------------------------------------------------------------------------- 8 TROUBLESHOOTING GUIDE -------------------------------------------------------------------------------------------- 10 1. Troubleshooting and Repair -------------------------------------------------------------------------------- 10 2. Possible Causes and Corrections of Air Leakage------------------------------------------------------ 15 REPAIR GUIDE---------------------------------------------------------------------------------------------------------------- 18 1. Precautions on Disassembly and Reassembly --------------------------------------------------------- 18 Assembly Diagram for NV 65HMC...
Powerful punching force about 1.3 times greater than that of our conventional NV 65AH Nailer. High pressure nailer Conventional nailer High pressure nailer Model NV 65HMC NV 65AH Weight 2.0 kg (4.4 lbs.) 2.1 kg (4.6 lbs.) 1.9 kg (4.3 lbs.) Height 28 5mm (11-1/4”)
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Dual action trigger This function automatically switches between "Single sequential actuation mode" and "Contact actuation mode" according to the operation sequence. This function can prevent unwanted double firing in "Single sequential actuation mode." Tool-less adjuster Rotating this adjuster adjusts the nailing depth (sink quantity of the nail head). Shallow Deep Adjuster...
The air plug of the Model NV 65HMC is exclusively designed for high pressure and cannot be connected to any air hoses and compressors that are generally used at much lower air...
2. Nail Selection The Model NV 65HMC utilizes common wire-collated and sheet-collated nail coils of 200 to 400 round-head nails. Applicable nail dimensions are shown below. However, genuine HITACHI nail coils should be used to assure satisfactory nailing quality. CAUTION: Ensure that nails are as specified in Fig. 1. Using other nails will cause nail jams and consequent nailer damage.
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Fig. 2 • Required nailing energy and nailer output energy Required nailing energy Nailer output energy (ft·lb) (kgf·cm) (ft·lb) (kgf·cm) 1200 1200 1000 1000 Hemlock Nail: d x L (mm x mm) (kgf/cm (psi) Air pressure setting to punch nail flush with NV 65HMC...
• Note that when you raise the Model NV 65HMC from the floor (after pressing the pushing lever against the floor) with the trigger pulled, single sequential actuation mode is automatically selected. Therefore, nails are not punched even when you press the pushing lever against the workpiece.
COMPARISON WITH SIMILAR PRODUCTS 1. Comparison of Specifications (Superior specifications: HITACHI Maker Model NV 65HMC NV 65AH (High pressure nailer) Item (High pressure nailer) (Conventional nailer) 12 to 23 bar 4.9 to 8.3 bar 12 to 23 bar Operating pressure (12 to 23 kgf/cm (5 to 8.5 kgf/cm...
1. Safety Instructions In the interest of promoting the safest and most efficient use of the Model NV 65HMC Nailer by all of our customers, it is very important when concluding a sale that the salesperson carefully ensure that the buyer seriously recognizes the importance of the Instruction Manual, and fully understands the precautions listed on the Warning Label attached to each tool.
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(320 psi, 23 bar) or less. (2) If the dust in compressed air accumulates on the sliding portion, the Model NV 65HMC will not operate properly. Lubrication effectively removes dust and also prolongs the service life of the Model NV 65HMC in terms of maintaining good performance.
TROUBLESHOOTING GUIDE 1. Troubleshooting and Repair Possible cause Problem Inspection method Corrective action ( *: Most-common cause) <Nails> Nails cannot • Magazine is not loaded • Check that the magazine • Use specified nails. be punched. with specified genuine is correctly loaded with •...
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Possible cause Problem Inspection method Corrective action ( *: Most-common cause) • Air leaks from the gap • Tighten screws and check Nails cannot between the body and the the O-rings. be punched. nose. (continued) • O-rings are worn or •...
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Possible cause Problem Inspection method Corrective action ( *: Most-common cause) • Cylinder inner surface is • Check that nails can be • Remove dust and then Nails cannot abnormal (packed with punched at 4.9 bar (5 lubricate. be punched. dust or worn).
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Possible cause Problem Inspection method Corrective action ( *: Most-common cause) *• Driver blade is worn. • Perform idle punching to • Replace the part. Nails cannot check whether the driver blade protrudes from the completely nose tip. punched *• Piston O-ring is abnormal •...
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Possible cause Problem Inspection method Corrective action ( *: Most-common cause) <Body: Nail feeding is Nails jam. incomplete.> (continued) • Feeder is worn and the • Open the nail guide and • Replace abnormal parts. sliding section abnormal. check the position of the •...
2. Possible Causes and Corrections of Air Leakage 1. Air leakage repair location • Air leakage repair location Control valve section Magnified view of Z -15-...
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(3) Next, check the other possible parts. [Bold] numbers in the description below correspond to item numbers in the Parts List and exploded assembly diagram for the Model NV 65HMC. Possible causes Air leak point...
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Possible causes Air leak point Control valve OFF Control valve ON Control valve Defect on O-Ring (P7-U) [98] of Valve Defect on O-Ring (1AP-11) [90] and O- exhaust port Piston [89] (worn, cut or flaws) Ring (P9-U) [88] of Valve Piston [89] Defect on O-Ring (I.D 1.8) [92] of Plunger (worn, cut or flaws) [93] (worn, cut or flaws)
The following describes the most essential precautions on disassembly and reassembly of the nailer. The NV 65HMC Coil Nailer mainly consists of six sections: output section, air duster valve section, control valve section, magazine section, nail feeder section and cap section.
Disassembly and Reassembly of the Output Section 1. Disassembly and reassembly of the Exhaust Cover, Head Valve, Exhaust Rubber, [Tools required] • Hex. bar wrench (3 mm) • ø 3 mm rod (or ø 3 mm roll pin puller) Seal Lock Hex. Socket •...
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(2) Reassembly • Reassembly of Exhaust Cover, Head Valve, Conduct reassembly reversing Exhaust Rubber, etc disassembly procedure, but note the following: • Inject about 3 g of grease into the Head Valve Exhaust Rubber [13] [10] sliding part of the Exhaust Cover [7]. Head Valve [10] Exhaust Cover [7] •...
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Disassembly and Reassembly of the Air Duster Valve Section [Tools required] • Socket wrench (14 mm) • Flat-blade screwdriver Knob [24] Retaining Ring (E-Type) For D4 Shaft [25] Valve Bushing [26] (left-handed thread) O-Ring (S-10) [27] O-Ring (S3) [28] O-Ring (1AP-3) [29] Plunger [30] Plunger O-Ring [31] Spring [32]...
Disassembly and Reassembly of the Control Valve Section [Tools required] • Roll pin puller (ø 3, ø 2.5) • Flat-blade screwdriver O-Ring (S-14) [95] O-Ring (S-16) [96] Feeder Shaft Ring [36] Valve Bushing (B) [97] Roll Pin D3 x 28 [65] Body Ass’y [39] O-Ring (P7-U) [98] O-Ring (P9-U) [88]...
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(2) Reassembly Conduct reassembly by reversing the disassembly procedure, but note the following: (a) Reassembly of the control valve section • Always keep the control valve section clean. • Fully apply grease to the O-Ring (S-16) [96], O-Ring (1AP-5) [99] and O-Ring (S-6) [100] of Valve Bushing (A) [101], O-Ring (I.D 1.8) [92] of the Plunger [93], O-Ring (P7-U) [98] , O-Ring (P9-U) [88] and O-Ring (1AP-11) [90] of the Valve Piston [89], and O-Ring (S-14) [95] and O-Ring (S-16) [96] of Valve Bushing (B) [97].
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(b) Reassembly of the Trigger section • Reassemble Trigger Arm (C) [68] with its protrusion facing upward. • Reassemble the Roll Pin D2.5 x 16 [76] with its splitting oriented as shown below. • Reassembly of the Trigger section Protrusion of Trigger Arm (C) [68] Trigger Piece (C) [66] Trigger [69] Roll Pin D2.5 x 16 [76]...
Disassembly and Reassembly of the Magazine Section 1. Disassembly and reassembly of the magazine ass'y [Tools required] • Disassembly and reassembly of the • Flat-blade screwdriver magazine ass'y • Phillips screwdriver • Roll pin puller (ø 4, ø 2.5) • Hex. bar wrench (4 mm) •...
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• Disassembly and reassembly of the magazine section Body Ass’y [39] Nylon Nut M5 [57] Pin [135] Machine Screw (W/Washer) M5 x 25 (Black) [64] Magazine [132] Feeder Shaft Ring [136] Nylon Nut M5 [57] Pushing Lever Cover (B) [134] Pin [135] Magazine Cover [137] Sleeve [133]...
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2. Disassembly and reassembly of the Nail Holder , the Holder Shaft , etc (1) Disassembly • Pull out both Pins [135] by using the roll pin puller (ø 4 mm). Then Magazine [132] and Magazine Cover [137] can then be removed. NOTE: Be careful not to lose the two Feeder Shaft Rings [136] when pulling out the two Pins [135].
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Disassembly and Reassembly of the Nail Feeder Section [Tools required] • Hex. bar wrench (5 mm ) • Roll pin puller (ø 4, ø 2) • C-shaped snap ring puller for hole Body Ass’y [39] Retaining Ring For D24 Hole [110] Feed Piston Cover [109] Piston Bumper [41] Bumper [108]...
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1. Disassembly and reassembly of Nose, Pushing Lever (A), etc (1) Disassembly • Remove the four Nylock High Tension Bolts M6 x 20 [52]. You can then detach the Nose [43], Pushing Lever (A) [55], etc. • Remove the Shaft Ring [112] of the Nose Piece [116] by using a flat-blade screwdriver. You can then detach the Nose Piece [116] and Nose Shaft [115].
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3. Disassembly and reassembly of the Piston Bumper, Feeder (A), Feed Piston, etc (1) Disassembly • Remove the Nose [43] and push the lever components from the output section according to item 1 in "Disassembly and Reassembly of the Nail Feeder Section". You can then remove the Piston Bumper [41]. •...
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4. Disassembly and reassembly of Nail Guide, Nail Stopper (A), Nail Stopper (B), etc [Tools required] • Long-nose pliers • Flat-blade screwdriver • Hex. bar wrench (3 mm) (1) Disassembly • Grasp the Nail Guide Shaft [53] with long-nose pliers or a similar tool, lower it, and then pull it out. You can then remove Nail Guide [121] and other components together.
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Disassembly and Reassembly of the Cap Section [Tools required] • Wrench (width: 21 mm) (1) Disassembly • The Cap [60] is unified with an Dust Cap [61] M42 left-handed thread and Cap [60] (left-hand thread) can be removed by using a wrench.
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LIST NO. E062 PNEUMATIC TOOL PARTS LIST HIGH PRESSURE COIL NAILER 2009 · 12 · 11 Model NV 65HMC (E1) 132 135...
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PARTS NV 65HMC ITEM CODE NO. DESCRIPTION REMARKS USED 980-046 SEAL LOCK HEX. SOCKET HD. BOLT M5 X 10 887-026 PLATE 887-025 TOP COVER 886-658 MUFFLER 886-423 PROTECTOR 881-262 NYLOCK BOLT M5 X 25 886-421 EXHAUST COVER 886-418 HEAD VALVE SPRING...
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PARTS NV 65HMC ITEM CODE NO. DESCRIPTION REMARKS USED 886-406 FEEDER (A) 880-675 NYLOCK HIGH TENSION BOLT M6 X 20 883-755 NAIL GUIDE SHAFT 883-761 PUSHING LEVER COVER (A) 887-024 PUSHING LEVER (A) 886-650 NOSE CAP 877-371 NYLON NUT M5 GRIP RUBBER (A) SUPPLIED WITH ITEM NO.