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9. DISASSEMBLY AND REASSEMBLY
The following describes procedures considered essential for proper disassembly and reassembly.
The numbers in [Bold] correspond to the item numbers in the Parts List and the exploded assembly diagrams.
The structure of the Model NV50AG2 can be generally divided into four sections: the output section, the control
valve section, nail feeder section and the magazine section.
NOTE: Prior to disassembling and reassembling, be sure to remove the hose with your finger off of the
trigger and exhaust the internal compressed air completely.
When reassembling O-rings, be careful not to scratch them and not to let dust enter the tool.
Apply grease to the O-rings and O-ring sliding sections.
9-1. General Precautions in Disassembly and Reassembly
Apply grease [Nippeco SEP-3A (Code No. 930035) or Multemp PS No.2 (Code No. 939536)] to the O-rings and
the O-ring sliding area.
When installing the O-rings, exercise care to avoid scratches and dust.
Lubricants required: Hitachi pneumatic tool lubricant
Replace gasket if broken, and make sure that there is no air leak after installation.
Exercise care to protect the valve area from any foreign substance.
Lubricate the sliding area of the feeder unit.
Rated tightening torque for bolts and screws
Bolt/Screw
Hex. Socket Hd. Bolt M6 x 20 ..................... [31]
Hex. Socket Hd. Bolts M6 x 14 ................... [44]
Hex. Socket Hd. Bolt M5 x 35 ....................... [2]
Nylock Hex. Socket Hd. Bolt M4 x 10 ......... [94]
Machine Screw (W/Washers) M5 x 30 ........ [57]
Cap .............................................................. [48]
Before replacing the Piston Bumper [17], make sure that anything, such as broken chips of the old Piston
Bumper [17], are not stuffed in the passages of the Body Ass'y [20] or the Nose [69].
1 oz. (30 cc)
Oil feeder
4 oz. (120 cc)
Oil feeder
1 quart (1 liter)
Can
(Code No. 877153)
(Code No. 874042)
(Code No. 876212)
Tightening torque [N
12.7
0.8 (130
8.3
0.5 (85
6.4
0.5 (65
4.4
0.3 (45
3, 3.2
2.0
0.5 (20
24.5
4.9 (250
--- 21 ---
m (kgf
cm, ft-lbs)]
•
•
8, 9.4
0.6)
5, 6.1
0.4)
5, 4.7
0.4)
0.2)
5, 1.4
0.4)
50, 18.0
3.6)
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