Disassembly And Reassembly; General Precautions In Disassembly And Reassembly - Hitachi NR 90AE 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 (ATTOLUB No. 2) (Code No. 317918) to the O-rings and the 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 (A) [6] 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 Grip Rubber (A) [37] because Grip Rubber (A) [37] cannot be
mounted without the specifically designed jig.
Tightening torque for each part
Nylock Hex. Socket Hd. Bolt M8 x 30 ........................... [29]
Hex. Socket Hd. Bolt M6 x 22 ....................................... [35]
Hex. Socket Hd. Bolt (W/Flange) M6 x 30 .................... [4]
Hex. Socket Hd. Bolt (W/Flange) M6 x 12 .................... [77]
Hex. Socket Hd. Bolt M5 x 14 ....................................... [1]
Hex. Socket Hd. Bolt M5 x 16 ....................................... [41]
Bolt
--- 19 ---
Tightening torque N
•
30.4 1 (310 10, 22.4
12.7 0.8 (130 8, 9.4
12.7 0.8 (130 8, 9.4
9.8 0.8 (100 8, 7.2
8.3 0.5 (85 5, 6.1
6.4 0.5 (65 5, 4.7
m (kgf cm, ft-lb)
•
0.7)
0.6)
0.6)
0.6)
0.4)
0.4)