Mitsubishi 6M70 - Piston, Connecting Rod and Cylinder Liner

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Disassembly sequence
1 Lower connecting rod bearing
2 Connecting rod cap
3 Upper connecting rod bearing
4 Piston and connecting rod
(See later section.)
5 Cylinder liner
Assembly sequence
Follow the disassembly sequence in re-
verse.
Service standards (Unit: mm)
Tightening torque (Unit: N·m {kgf·m})
Lubricant and/or sealant
Location Maintenance item Standard value Limit Remedy
– Piston protrusion from crankcase top surface –0.321 to –0.111 – Replace
– End play of connecting rod 0.2 to 0.5 1.0 Replace
1, 3 Connecting rod bearing
Oil clearance 0.06 to 0.122 0.25
Replace
Span when free – 90.5
4, 5 Piston and cylinder liner clearance 0.247 to 0.277 – Replace
5 Cylinder liner
Flange protrusion 0.01 to 0.07 –
Replace
Inner diameter φ135 to 135.03 φ135.25
Cylindricity 0.03 or less –
Difference in protrusion of
adjacent flange
0.04 or less –
Mark Parts to be tightened Tightening torque Remarks
Nut (connecting rod cap mounting) 49 {5} + 120° Wet
Mark Points of application Specified lubricant and/or sealant Quantity
Nut thread
Engine oil As required
Inside surface of connecting rod bearing
Outside periphery of cylinder liner
Outer periphery of piston
M
ITSUBISHI 6M70 PISTON, CONNECTING ROD AND
CYLINDER LINER