WÄRTSILÄ Vasa R22, Instruction Manual

Page: 128 / 297

1 Turn the crank of the first cylinder
near the bottom dead
center.
2 Apply the crankshaft indicator between the two crank
webs into the center marks provided for this purpose.
3 The clearance between the micrometer and connecting
rod should be as small as possible.
4 Set the micrometer at zero.
5 Read the various deviations when turning the crank to
the rear side, top dead center, operating side etc. Record the
readings in the ’’Crankshaft Alignment’’ -form.
Dial indicator position and reading
Note! During the alignment procedure the crankshaft should be
turned in the direction of rotation, only.
6 Repeat this procedure with the other cylinders.
7 The difference between two diametral readings of the
same crank must not exceed following values (in mm):
22 22/26
- After installing and re-aligning
0.04 0.08
- Re-aligment is recommended, if difference is more than
0.07 0.14
- Re-aligment is absolutely necessary at
0.10 0.20
Note! Note the difference between the 22 (stroke 240 mm) and 22/26
(stroke 260) engines
0
+
-
D
C
B
A E
Operating side Rear side
As seen from flyweel end
0
+
-
22 22/26
Fig 11-1
2211609205
11 Crank Mechanism 22-9601
11 - 2 VASA 22