Hitachi N 5024A, Технические данные и руководство по обслуживанию

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(a) Disassembly (See Fig. 14.)
Remove the driving section and the magazine section as described in section 10-2-(3).
With the roll pin puller (3 mm (0.118") dia.), take out the Roll Pin D3 x 30 [68], and remove the Trigger [67],
Trigger Plunger [66] and Plunger (B) [60].
Insert the flat-blade screwdriver into the groove of the Trigger Valve Bushing [64], and loosen it by turning it
to the left, being careful not to damage the groove.
After removing the Trigger Valve Bushing [64], pull down strongly on the Valve Bushing [59] to remove the
Valve Bushing [59], Plunger (A) [56] and the Plunger Spring [55].
10-3. Disassembly and Reassembly of the Control Valve Section
Tools required:
Roll pin puller (3 mm (0.118") dia.)
Flat-blade screwdriver
Fig. 17
Trigger [67]
Plunger Spring [55]
Valve Bushing [59]
Plunger (A) [56]
Trigger Plunger [66]
Trigger Valve Bushing [64]
Valve Plate [63]
Roll Pin D3 x 30 [68]
Plunger (B) [60]
(b) Reassembly
Reassembly can be accomplished by following the disassembly procedures in reverse. However, special
attention should be given to the following items.
Be very careful in handling the Plunger Spring [55], as it can become twisted very easily.
To prevent the two O-rings on the outside of the Valve Bushing [59] from being damaged when inserted into
the body, carefully apply grease to the body hole and the outer circumference of the O-rings prior to
assembly.
(c) Adjustment of the Safety Bolt [49] (See Fig. 15.)
Adjust Pushing Lever (A) [54] to the highest position. (The position where a staple is driven in most deeply.)
The Pushing Lever [51] can be adjusted by loosening the Nut M5 [50] and turning the Safety Bolt [49].
Perform adjustment to a point where the resistance of Plunger (B) [60] pushing up Plunger (A) [56] is felt
when the pushing lever is raised. At this point, the lower end of the Nose [26] should be separated from the
lower end of the pushing lever by 4 mm 0.5 mm (.157" .020").
Fig. 14 Disassembly of valve