Possible Causes And Correction Of Air Leakage - Hitachi NT65MA3 - 2-1/2 Angled Finish Nailer Service Manual

9-3. Possible Causes and Correction of Air Leakage

Air leakage repair location
Air leakage point
(A) Exhaust port
(B) Exhaust cover
With control valve OFF
Head Valve (A) [10] and the Cylinder
[11] are abnormal (seal surface of the
b portion is worn or deformed).
The O-ring (I.D 20.8) [9] is abnormal
(worn, deformed or damaged).
Head Valve (A) [10] is abnormal
(worn, deformed or damaged).
The Hex. Socket Hd. Bolt (W/Sp.
Washer) M5 x 25 [4] is loose.
The Gasket [6] is damaged.
The seal surface of the Body Ass'y
[30] or the Exhaust Cover [5] is
abnormal.
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Repair procedure
(1) Check the points of the
(2) Next, check the seal
(3) And then, check other
Possible cause
With control valve ON
Head Valve (A) [10] is abnormal ( a
portion is worn, deformed or broken).
The Exhaust Cover [5] is abnormal
( a portion is deformed or clogged
with dust).
following parts marked
by an asterisk for
abnormal condition.
parts (marked with a
double circle) for wear,
flaws and damage.
places.