Disassembly And Reassembly Of The Control Valve Section - Hitachi NT65MA3 - 2-1/2 Angled Finish Nailer Service Manual

10-3. Disassembly and Reassembly of the Control Valve Section (See Fig. 15.)
Retaining Ring (E-type)
for D6 Shaft [27]
Valve Bushing (B) [61]
O-ring (S-18) [62]
O-ring (I.D 8.8) [63]
O-ring (S-4) [64]
Valve Piston (B) [65]
O-ring (I.D 8.8) [63]
O-ring (I.D 11) [66]
Plunger Spring [67]
Plunger (A) [68]
O-ring (I.D 1.8) [69]
Valve Bushing (A) [70]
Fig. 15 Disassembly and reassembly of the control
valve section
Roll Pin D3 x 28 [54]
Trigger (A) [53]
Steel Ball D3.97 [55]
Spring (C) [56]
Change Knob [57]
Head Valve O-ring
(I.D 16.8) [60]
Remove
Trigger (A) [53]
Force down
Screwdriver
[Tools required]
Flat-blade screwdriver
Roll pin puller (3 mm (.118") dia.)
Hex. bar wrench (4 mm)
Carefully disassemble so as
not to lose these parts.
(a) Disassembly
Remove the Retaining Ring (E-type) for D6
Shaft [27] with the blade of a screwdirver and
pull out the Change Knob [57] being careful
not to lose the Steel Ball D3.97 [55] and
Spring (C) [56]. Then Trigger (A) [53] can be
removed.
To remove Trigger (A) [53] together with the
driving section (Pushing Lever (B) [36], Blade
Guide [37], etc.), remove Trigger (A) [53]
while forcing down Plunger (A) [68] with the
blade of a screwdriver, as shown in Fig. 16.
Pushing Lever (B) [36]
Plunger (A) [68]
Fig. 16
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