Hitachi NR90GC Service Manual - Page 17
Thus the Chamber, Chamber Lock Bar
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(4) Discharging and cooling When the Trigger [98] is released, the Chamber Lock Bar [100] is returned from the position under the Chamber [24] to the original Filter [4] position. Thus the Chamber [24] and the Pushing Lever [64] are placed in the initial state and sealing by the O-rings [15] and [36] Combustion chamber is released. When the Fan [20] rotates, air passes through the Filter [4], enters the combustion chamber and goes to the outside O-ring [36] Chamber [24] in order to discharge gas and cool the combustion chamber (Fig. 8). O-ring [15] Fan [20] Trigger [98] Pushing Lever [64] Chamber Lock Bar [100] Fig. 8 --- 14 ---
--- 14 ---
O-ring
[15]
Chamber Lock Bar
[100]
Chamber
[24]
Fan
[20]
Pushing Lever
[64]
Fig. 8
(4) Discharging and cooling
When the Trigger
[98]
is released, the
Chamber Lock Bar
[100]
is returned from the
position under the Chamber
[24]
to the original
position.
Thus the Chamber
[24]
and the
Pushing Lever
[64]
are placed in the initial
state and sealing by the O-rings
[15]
and
[36]
is released.
When the Fan
[20]
rotates, air
passes through the Filter
[4]
, enters the
combustion chamber and goes to the outside
in order to discharge gas and cool the
combustion chamber (Fig. 8).
Filter
[4]
Combustion
chamber
O-ring
[36]
Trigger
[98]