Hitachi NR90GC Service Manual - Page 50

When mounting the Retaining Ring, Fig. 40

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When mounting the Retaining Ring [37] to the Cylinder Ass'y [42], fit the Retaining Ring [37] in the groove securely facing the split to the no-concave portion of the cylinder. Face the sagged side of the Retaining Ring [37] to the Piston [39] (Figs. 40 and 41). Retaining Ring [37] Cylinder Ass'y [42] Exhausting direction Concave portion (7 places) Face the split of the Retaining Ring [37] to the no-concave portion of the Cylinder Ass'y [42]. Fig. 40 Retaining Ring [37] Piston [39] Cylinder Ass'y [42] Face the sagged side of the Retaining Ring [37] to the Piston [39]. Fig. 41 --- 47 ---

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--- 47 ---
When mounting the Retaining Ring
[37]
to the Cylinder Ass’y
[42]
, fit the Retaining Ring
[37]
in the groove
securely facing the split to the no-concave portion of the cylinder.
Face the sagged side of the Retaining Ring
[37]
to the Piston
[39]
(Figs. 40 and 41).
Fig. 40
Concave portion (7 places)
Retaining Ring
[37]
Cylinder Ass’y
[42]
Face the split of the Retaining Ring
[37]
to the
no-concave portion of the Cylinder Ass’y
[42]
.
Fig. 41
Piston
[39]
Face the sagged side of the Retaining
Ring
[37]
to the Piston
[39]
.
Retaining Ring
[37]
Cylinder Ass’y
[42]
Exhausting
direction