Cylinder Liner, Piston And Connecting Rod - Disassemble And Inspect - Mitsubishi S12A2 Service Manual

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
Inner face scratches/wear,
outer peripheral O-ring
groove rust/cavitation
Replace.
Deformation, wear
Cylinder Liner, Piston and Connecting Rod - Disassemble and Inspect
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
Outer peripheral surface scratch,
crack, flaw, carbon deposit
12
Inner face wear,
flaw, discoloration
Inner and outer
peripheral
surface flaw,
seizure, peeling
Serrated portion
wear, crack
7 Oil ring
8 Snap ring
9 Piston pin
10 Piston
11 Connecting rod
12 Cylinder liner (Approx 16 kg [35 lb])
Chapter 5 DISASSEMBLY OF BASIC ENGINE
Wear, flaw
9
8
11
Crack, oil hole clogging
4
3
2
1
Flaw
5
6
7
10
5-17