Mechanism And Operation Principle; Mechanism - Hitachi NV 83A2 Technical Data And Service Manual

8. MECHANISM AND OPERATION PRINCIPLE

8-1. Mechanism

As illustrated in Fig. 3, the Model NV 83A2 can be generally divided into four sections:
output section, control valve section, driving section and magazine section.
Although the output section and the valve section are basically common to those of the Model NV 83A, most of
the parts of the driving section and the magazine section have been newly designed.
Primary differences from the Model NV 83A are described below.
Output section ................... The handle employs a grip rubber (Model NV 83A grip tape).
Driving section .................... The tail cover, nail guide shaft, etc. have been newly designed to adopt the tool-
Magazine section ................ Most of the parts of the magazine section have been newly designed to make the
Exhaust
Valve [9]
Exhaust vent
Head Cap and
Gasket Set [10]
Exhaust Cover [4]
Piston (H) [12]
Cylinder Ring [19]
Cylinder [17]
Driver blade
Air return chamber
Piston Bumper
(B) [29]
Adjuster [39]
Tail Cover [31]
Pushing Lever [54]
less adjuster.
magazine top-loading type.
A
Magazine [81]
Fig. 3 Construction
Accumulator
Safety valve portion
Trigger valve portion
Section A - A
Guide Lock [97]
Feeder Set [35]
--- 10 ---
Control valve section
Cap [46]
Air inlet
Magazine section
Magazine
Cover [84]
Nail Holder [87]
Nail Guide [95]
Feeder Piston [70]