5-16
Chapter 5 DISASSEMBLY OF BASIC ENGINE
4. Cylinder Liner, Piston and Connecting Rod - Disassemble and Inspect
Understanding of the current engine condition before disassembling is very important to know the cause of trouble and do the
efficient work.
Depending on the maintenance work or purpose, it is desirable to inspect some of the following items before proceeding with
any job.
Piston Protrusion - Measure
Connecting Rod End Play - Measure
Cylinder Liner Inside Diameter - Measure
Cylinder Liner Flange Protrusion - Measure
Cylinder Liner, Piston and Connecting Rod - Disassemble and Inspect
Wear, flaw
Inner surface wear, flaw, discoloration
Flaw
Serrated portion wear, crack
Inner peripheral surface flaw,
seizure, peeling
Crack, oil hole clogging
Outer peripheral surface scratch,
crack, flaw, carbon deposit
Replace.
Deformation, wear
Inner surface scratch, wear, outer surface/
O-ring groove rust, cavitation
4
5
6
9
8
7
10
11
3
2
1
12
Disassembling Sequence
1 Connecting rod cap bolt
2 Connecting rod cap
3 Lower connecting rod bearing
4 Upper connecting rod bearing
5 No. 1 compression ring
6 No. 2 compression ring
7 Oil ring
8 Snap ring
9 Piston pin
10 Piston
11 Connecting rod
12 Cylinder liner (S6R: approx 16 kg [35 lb])
(S6R2: approx 19 kg [42 lb])
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