25
WORKSHOP MANUAL
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Pic.1:
Flywheel surfaces are not in a single plane (do not coincide).
On the surface of the flywheel, mark with the chalk points where the indicator shows
the maximum value. Take the crank mechanism out of the centres and support the middle
flywheels so that the outside flywheel markings are on the top. Then tap the marked points
with the copper mallet until the desired result is obtained.
Pic.2:
Places where indicator shows the maximum value sign with the chalk.
In our
case the whole mechanism is bent. Take it out of centres, support one end flywheel in such a
way that the signed places are on top. Hold the opposite end with a hand and tap with copper
mallet on the middle flywheels – on marked places. Or you can use plies S-203 to expand the
inner flywheels – still clamped in the centres- on opposite side of marking.
Pic.3:
Left and right flywheels are closer to each other at the points opposite to the
connecting rod pins. For expanding use plies S-203. Test the crank mechanism clamped
between centres. If the closing is minor, the expanding operation can be done by S-201 lever.
If the end flywheels are closed at the points opposite to the cennecting rod pins, they must be
forced apart. After having removed the crank mechanism from the centres, give the flywheels
blows in the direction of arrow
Pic.4:
Left and right flywheels are too opened and must be closed at the points
opposite to the connecting rod pins. Take the crank mechanism out of the clamping and give
the flywheel blows from the side indicated by arrow.
Note:
Continue in centering and testing until you achieve the admissible radial run out
of the crank mechanism, wich must be less than 0,02-0,03. After having centered the
crank mechanism test the axial play and mount the cleaned mid ring (face) on.