Disassembly And Reassembly; General Precautions In Disassembly And Reassembly - Hitachi NV 83A2 Technical Data And Service Manual

10. DISASSEMBLY AND REASSEMBLY

The items particularly necessary for disassembly and reassembly are described below. 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 (Nippeco 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 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.
Tightening torque for each part
Nylock Hex. Socket Hd. Bolt M8 x 22 ........................... [37]
Hex. Socket Hd. Bolt (W/Flange) M6 x 45 .................... [1]
Hex. Socket Hd. Bolt (W/Sp. Washer) M6 x 25 ............. [3]
Hex. Socket Hd. Bolt M5 x 18 ....................................... [47]
Hex. Socket Hd. Bolt M5 x 20 ....................................... [100]
Seal Lock Hex. Socket Hd. Bolt M5 x 10 ...................... [76]
Machine Screw M5 x 25 ................................................ [44]
Seal Lock Hex. Socket Hd. Bolt M4 x 8 ........................ [107]
Bolt
--- 25 ---
Tightening torque
N m (kgf cm, ft-lb)
• •
30.4 2 (310 20, 22.4
12.7 0.8 (130 8, 9.4
9.8 0.8 (100 8, 7.2
8.3 0.5 (85 5, 6.1
8.3 0.5 (85 5, 6.1
8.3 0.5 (85 5, 6.1
2.9 0.37 (30 3.8, 2.2
4.4 0.3 (45 3, 3.3
1.4)
0.6)
0.6)
0.4)
0.4)
0.4)
0.3)
0.2)