Mitsubishi Heavy Industries S3L, Service Manual

Page: 58 / 200

DISASSEMBLY OF BASIC ENGINE
5-14
4.5 Measuring crankshaft end play
(1)
With attach the dial gauge to top of the crankshaft,
measure the end play.
(2)
If measured value exceeds the limit, replace the flange
bearing with new one.
Measuring crankshaft end play
4.6 Removing main bearing cap
(1)
Reverse the engine.
(2)
Remove the main bearing cap bolt.
(3)
Remove the main bearing cap together with the lower
main bearing.
Use a sliding hammer to remove main bearing caps on
the front and rear ends.
Note: (a) Be careful not to damage main bearings.
(b) Mark each main bearing for its cylinder number.
Removing main bearing cap
4.7 Removing crankshaft
&$87,21
Be careful not to damage bearings when removing the
crankshaft.
(1)
Slowly lift the crankshaft straight up.
(2)
Arrange the bearings in the order of disassembly so that
their original positions are restored when reassembling.
Note: (a) When raising the crankshaft, do not allow wire
chain to come into contact with the crankshaft.
To avoid damage to the crankshaft when raising,
use a cloth belt or pad.
(b) Mark the bearings for their cylinder numbers.
Removing crankshaft
Item Standard Limit
Crankshaft end play
0.050 to 0.175 mm
[0.0020 to 0.0069 in.]
0.500 mm
[0.0197 in.]