Hitachi NV 75AG, Технические данные и руководство по обслуживанию

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Apply grease to the O-ring sliding surface of the Feed Piston [64] and the Nose [22]. However, be careful
not to apply too much grease to the "A" surface shown in Fig. 25. Otherwise, the Feed Piston [64]
operates improperly at the low pressure.
Mount the Roll Pin D4 x 16 [25] facing its split toward the magazine as shown in Fig. 25. The amount of
protrusion at both ends must be equal after reassembly (amount of protrusion: 1.5 mm).
Check that the Retaining Ring for D28 Hole [68] is securely inserted into the groove of the Nose [22].
(4) Disassembly and reassembly of Nail Guide [89], Nail Stopper (A) [90], Nail Stopper (B) [92] and other parts
(See Fig. 26.)
Tools required: Flat-blade screwdriver
Hex. bar wrench 3 mm
(a) Disassembly
Remove the Shaft Ring [85] from the Nail Guide Shaft [29] with a flat-blade screwdriver and remove the
Nail Guide Shaft [29]. Then the Nail Guide [89] and other parts can be removed in an assembly.
Remove the Nylock Hex. Socket Hd. Bolt M4 x 12 [97] with a hex. bar wrench 3 mm. Then the Nail Guide
Cover [94], Stopper Spring (A) [91], Stopper Spring (B) [93] and Cover [95] can be removed.
Remove the Shaft Ring [85] from the Guide Lock [87] with a flat-blade screwdriver and pull out the Guide
Lock [87]. Then Nail Stopper (A) [90] and Nail Stopper (B) [92] can be removed.
Nose [22]
Shaft Ring [85]
Cover [95]
Nail Guide Cover [94]
O-ring (P-4) [21]
Nail Guide Shaft [29]
Nylock Hex. Socket Hd. Bolt M4 x 12 [97]
Sleeve (B) [96]
Shaft Ring [85]
Stopper Spring (B) [93]
Nail Stopper (B) [92]
Stopper Spring (A) [91]
Nail Stopper (A) [90]
Guide Lock [87]
Nail Guide [89]
Spring [88]
Fig. 26 Disassembly and reassembly of nail guide, nail stopper (A), nail stopper (B) and other parts