15 - Engine
12 - Crankshaft
00 - General
15 - 81
9813/7450-2
15 - 81
Figure 153.
C
B
A
A
A
Thrust Washers
B
Crankshaft
C
Rear main bearing
2. Put labels on the thrust washers to make sure
that they are installed in the correct positions
during assembly.
3. Use suitable lifting equipment to carefully lift the
crankshaft from the crankcase (if the crankshaft
is lifted manually, two people will be required).
4. Carefully lift out the bearing shells.
Figure 154.
D
D
Main bearing shells
5. It is recommended that the bearing shells are
replaced. If however they are to be used again,
put label on the shells to make sure that they
are installed in their original positions during
assembly.
6. Inspect the crankshaft and main bearings etc.
for damage and excessive wear. Refer to Check
Condition (PIL 15-12).
Before Installation
1. Clean off all traces of the old sealant compound
from the crankcase and bedplate mating faces.
2. Use a suitable degreasing agent to carefully
clean the main bearing saddles in the bedplate
and crankcase. Take care not to block the oil
ways or the piston cooling jets.
Consumable: Cleaner/Degreaser - General
purpose solvent based parts cleaner
Important: Cleanliness is of the utmost importance.
Blocked oil-ways or oil jets will cause engine failure.
Before you install the crankshaft make sure that ALL
oil-ways and jets are clear and free from debris.
Install
1. The installation procedure is the opposite of the
removal procedure. Additionally do the following
steps.
2. Make sure that all items are clean and free from
damage and corrosion.
3. If removed or a new crankcase is being installed
then install cooling J jets as follows: