Yanmar 6LPA-STP2 Service Manual page 126

ENGINE
15. Measure the crankshaft thrust clearance with a
dial indicator by moving the crankshaft back
and forth using a screwdriver (Figure 5-89, (1)).
• Standard thrust clearance: 0.040 to 0.240 mm
(0.001 to 0.009 in.)
• Maximum thrust clearance: 0.30 mm
(0.012 in.)
If the measured value exceeds the specified
maximum, replace the thrust bearing as a set.
• Thrust bearing thickness: 2.930 to 2.980 mm
(0.115 to 0.117 in.)
Figure 5-89
(1)
Figure 5-89
16. Remove the 15 main bearing cap bolts (6
pointed head) shown in Figure 5-90.
Figure 5-90
Figure 5-90
17. Uniformly loosen and remove the 14 main
bearing cap bolts (12 pointed head) in the order
shown in Figure 5-91.
5-46
Figure 5-91
(4)
(3)
18. Insert the tip of a screwdriver (Figure 5-92, (1))
between the main bearing cap and cylinder
block and pry out the main bearing cap. Insert
the lower bearing into the main bearing cap in
preparation for reassembly.
Note: AVOID damaging the contact surfaces of
the main bearing cap and cylinder block
during disassembly.
0005119
Figure 5-92
(1)
19. Lift and remove the crankshaft.
• Insert the upper bearing into the cylinder block
0005120
in preparation for reassembly.
• Keep the thrust bearings in the correct order for
reassembly.
20. Clean the main journals and bearings.
© 2007 Yanmar Marine International
Cylinder Block
(6)
(10)
(14)
(12)
(8)
(13)
(11)
(7)
Figure 5-91
Figure 5-92
6LPA Service Manual
(2)
(1)
(5)
(9)
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0004874