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Service Manual Mitsubishi L-Series diesel engines
Version 08/2004
ENGLISH
SPECIFICATIONS AND MAINTENANCE
STANDARDS
SERVICE SPECIFICATIONS AND
STANDARDS
Unit: mm (in.)
Description Specification or Standard Repair Limit Service Limit
Cylinder bore
L2A, L3A 65 [2.5591]] +0.2 [0.0079] +0.70 [0.0276]
L2C, L3C 70 [2.7559] +0.2 [0.0079] +0.70 [0.0276]
L2E, L3E 76 [2.9921] +0.2 [0.0079] +0.70 [0.0276]
Oversize finish tolerance 0 to 0.03 [0 to 0.0012] for each oversize
Cylindricity 0.01 [0.0004] or less
Gasket fitting surface distortion 0.05 [0.0020] or less 0.1 [0.0039]
Piston
Type Solid type
Material Aluminum alloy
Outside diameter (Skirt end)
L2A, L3A 65 [2.5591]
L2C, L3C 70 [2.7559]
L2E, L3E 76 [2.9921]
Clearance to cylinder 0.2 [0.0079]
Oversize 0.25 [0.0098], 0.50 [0.0197]
Protrusion from crankcase top surface 0.9 [0.0354]
Piston pin
Type Semi-floating type
Outside diameter Outside diameter
Piston pin to piston clearance 0.08 [0.0031]
Piston pin to connecting rod clearance Press-fit load: 1000±500 kg [2204.6±1102.3 lb] (Within standard
range)
Piston ring
Number of rings
Compression 2{ No.1: Chrome plated, semi-keystone type
No.2: Tapered
Oil 1 (Chrome plated ring with coil expander)
Ring width
Compression (No.2) 2 [0.0787]
Oil 3 [0.1181]
Ring side clearance
Compression No.1 —
Compression No.2 0.05 to 0.09 [0.0020 to 0.0035] 0.2 [0.0079]
Oil ring 0.03 to 0.07 [0.0012 to 0.0028] 0.2 [0.0079]
Ring gap
Compression No.1, No.2 0.15 to 0.30 [0.0059 to 0.0118] 1.5 [0.0591]
Oil ring 0.15 to 0.35 [0.0059 to 0.0138]
Connecting rod
Type Forged I-beam
Deflection and twist Within 0.05 [0.0020] 0.15 [0.00591]
max.
Big end thrust clearance 0.1 to 0.35 [0.0039 to 0.0138] 0.5 [0.0197]
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