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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
As the Valve Bushing [51], Plunger (A) [50], and Plunger (B) [59] are not interchangeable with similar parts on
such models as the Model NV 50AA and NV 50A1, be very careful to ensure that parts from other models are
not inadvertently assembled on the Model NV 45AB2. Inadvertent assembly of such parts could result in
malfunction, misfiring, etc., and is very hazardous.
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.
Coat a small amount of grease (a silicone-based grease is recommended) on the sliding portions of the nail
feeding section.
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 the packings are damaged, replace them and ensure that there is no air leakage after repair.
Be especially careful to prevent the entry of foreign particles into the control valve section.
Use the conventional grip tape for repair of the grip rubber because the grip rubber cannot be mounted without
the specifically designed jig.
Tightening torque for each part
Bolt and screw
Tightening torque
N
•
m (kgf
•
cm, ft-lb.)
Hex. Socket Hd. Bolt M5 x 25 .......................... [1]
Hex. Socket Hd. Bolt M5 x 16 ........................ [44]
Hex. Socket Hd. Bolt M5 x 10 ...................... [108]
Hex. Socket Hd. Bolt M5 x 20 .......................... [5]
Hex. Socket Hd. Bolt M5 x 8 .......................... [30]
Nylock Hex. Socket Hd. Bolt M5 x 16 ............ [34]
Hex. Socket Hd. Bolt M5 x 10 ........................ [68]
Nut M5 ........................................................... [37]
Machine Screw M5 x 22 ................................. [39]
Hex. Socket Hd. Bolt M4 x 6 .......................... [84]
Machine Screw M4 x 50 ................................. [92]
Hex. Socket Hd. Bolt M5 x 14 ...................... [106]
8.3 0.5 (85 5, 6.1 0.4)
6.4 0.5 ( 65 5, 4.7 0.4)
3.9 0.3 (40 3, 2.9 0.2)
3.4 0.3 (35 3, 2.5 0.2)
0.5 to 1 (5 to 10, 0.36 to 0.72)
2 0.3 (20 3, 1.4 0.2)
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