Interchangeability - Hitachi NR 83A2 Technical Data And Service Manual

8-2. Interchangeability

Interchangeability of the parts between the Model NR 83A2 and the Model NR 83A is described below. The parts
that are newly designed or changed for the Model NR 83A2 and not interchangeable with the Model NR 83A are
described in detail.
(1) Output section
Be careful not to make mistakes in mounting the following parts that were newly designed or changed for the
1
Model NR 83A2 because these parts are similar to those of the Model NR 83A but they are not
interchangeable.
Part
Exhaust Valve [9]
1 mm dia. hole
Nylock Hex.
Socket Hd. Bolt
M8 x 22 [33]
Nylock Hex.
(For mounting the
Socket Hd. Bolt
Nose [32])
M8 x 22 [33]
Short length
Cylinder [17]
NR 83A2
Color: Orange
Nose [32]
Chamfered
NR 83A
Color: Milky white
M8 x 25
Not chamfered
--- 12 ---
Caution
Never mount the exhaust
valve for the Model NR 83A
to the Model NR 83A2 by
mistake. Otherwise, it may
cause a malfunction when
selecting the single actuation
(single sequential actuation)
mechanism.
Note that the driving force
may be decreased a little
though no malfunction may
occur if the exhaust valve for
the Model NR 83A2 is
mounted to the Model
NR 83A.
Do not mount the bolt
M8 x 25 for the Model NR
83A to the Model NR 83A2.
Otherwise, the bolt M8 x 25
may be loose after the long
term use.
There is no problem in
mounting the nylock hex.
socket hd. bolt M8 x 22 for
the Model NR 83A2 to the
Model NR 83A.
Do not mount the cylinder for
the Model NR 83A to the
Model NR 83A2. Otherwise,
the driving force may be
decreased a little.
There is no problem in
mounting the cylinder for the
Model NR 83A2 to the Model
NR 83A.