Hitachi NT 65MA2 Technical Data And Service Manual page 28

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Push
Body Ass'y [29]
Plunger (A) [66]
Wire with 1.5 to 3 mm dia.
(.059" to .118")
4 to 5 mm (.157" to .197") dia. bar
Head Valve O-Ring
(I.D 16.8) [58]
Valve Bushing
(B) [59]
Valve Piston (B) [63]
Valve Bushing
(A) [68]
When disassembling,
do not pull out this
part by gripping it
with pliers.
Fig. 17
Valve Bushing (B) [59]
Hole
Be careful not to
damage the internal
surface.
Fig. 18
Pull out the Roll Pin D3 x 28 [51] with the roll
pin puller (3 mm (.118") dia.), and take out the
control valve in the following manner.
1) Remove the Exhaust Cover [5] by following the
procedure in (1), section 10-2.
2) As shown in Fig. 17, put a 4 to 5 mm (.157" to
.197") dia. bar in from the upper side of the
Body Ass'y [29] and push the top of Valve
Piston (B) [63]. Now, the parts forming the
control valve can be taken out except Valve
Bushing (A) [68] and the Head Valve O-Ring
(I.D 16.8) [58].
[CAUTIONS]
Be careful not to damage Valve Piston (B) [63],
Valve Bushings (A) [68] and (B) [59], etc.
Do not pull out the end of Plunger (A) [66] with
pliers.
3) To take out Valve Bushing (B) [59], put a 1.5 to
3 mm (.059" to .118") dia. wire with its end
hooked into the hole in the bushing and pull it
out while being careful not to damage the
internal surface of Valve Bushing (B) [59], as
shown in Fig. 18.
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