Principle Of Operation - Hitachi NT 65GB Technical Data And Service Manual

8-2. Principle of Operation

(1) Before nailing
Fuel is not charged into the nailer in the
initial state. The combustion chamber is
released to the atmosphere (Fig. 4).
(2) When nailing
1) Push up Pushing Lever (A) [82]..
The nailer then starts operation in
the following order (Fig. 5).
(a) The Pushing Lever Arm [77] on
the Chamber [16] pushes the
Trigger Stopper [75] to turn on
the fan switch. The Fan [11] in
the combustion chamber then
rotates.
(b) The Chamber Head [14] and
the Chamber [16] surface are
sealed by the Piston Ring (B)
[17] simultaneously. Thus the
combustion chamber is cut off
from the atmosphere.
(c) The protrusion of the Chamber
Head [14] pushes up the tip of
the Actuator [56] to rotate it.
The Actuator [56] thus pushes
the back of the fuel cell to spray
fuel into the combustion chamber.
Combustion
chamber
Fan [11]
Chamber [16]
Cylinder
Ass'y (A) [104A]
Pushing Lever (A) [82]
Piston
Ring (B) [17]
Fan [11]
Piston
Ring (B) [17]
Chamber [16]
Pushing
Lever Arm [77]
Pushing Lever (A) [82]
-11-
Trigger [71]
Fig. 4
Actuator [56]
Trigger
Stopper [75]
Fig. 5
Fuel cell
Chamber
Head [14]
Fan switch