Mitsubishi L2E Service Manual

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Service Manual Mitsubishi L-Series diesel engines
Version 08/2004
SPECIFICATIONS AND MAINTENANCE
STANDARDS
ENGLISH
SERVICE SPECIFICATIONS AND
STANDARDS
SERVICE SPECIFICATIONS AND STANDARDS
38 SPECIFICATIONS
1
AND
MAINTENANCE
STANDARDS
38.1 Engine Main Parts
Unit: mm (in.)
1. All specifications are subject to change without any prior
notice.
Description Specification or Standard Repair Limit Service Limit
Cylinder compression pressure 2.7 MPa (28 kgf/cm
2
) [398 psi] (at 280 RPM) 2.5 MPa
(25 kgf/cm
2
)
[356 psi]
2.2 MPa
(22 kgf/cm
2
)
[313 psi]
Difference between cylinders (maximum) 0.25 MPa (2.5 kgf/cm
2
) [35.6 psi]
Fuel injection order L2: 1-2, L3: 1-3-2
Cylinder head
Bottom surface distortion (Flatness) Within 0.05 [0.0020] 0.1 [0.0039]
Valve guide Inside diameter (IN and EX) 6.6 [0.2598]
Valve seat angle (IN and EX) 45°
Valve seat width (IN and EX) 1.3 to 1.8 [0.0512 to 0.0709] 2.5 [0.0984]
Valve seat sinkage –1 [-0.0394]
Valve clearance (IN and EX) 0.25 [0.0098] (Cold)
Valve
Valve head diameter (IN) 26.7 [1.0512]
(EX) 24.7 [0.9724]
Overall length 94 [3.7008]
Stem Outside diameter 6.6 [0.2598]
Stem to Guide clearance (IN) 0.10 [0.0039]
(EX) 0.15 [0.0059]
Valve face angle 45°
Valve head thickness (Margin width) 1.0 [0.0394] 0.5 [0.0197]
Valve head sinkage
(from cylinder head bottom face)
0.5 [0.0197]
Valve spring
Free length, p/n MM432-668 (white color
on the 2 upper side coils)
40.5 [1.5945] 39.3 [1.5472]
Free length, p/n 30L04-04500 (yellow
color on the 2 upper side coils)
40.0 [1.5748]
Set force/Set length, p/n MM432-668
(white color on the 2 upper side coils)
58 N (5.94 kgf) [13.1 lbf]/35.5 mm [1.3976 in.]
146 N (14.84 kgf) [32.7 lbf]/28 mm [1.1024 in.]
–15%
Set force/Set length, p/n 30L04-04500
(yellow color on the 2 upper side coils)
68 N (6.89 kgf) [15.2 lbf]/35.5 mm [1.3976 in.]
180 N (18.36 kgf) [40.5 lbf]/28 mm [1.1024 in.]
–15%
Perpendicularity 2° 3°
Rocker arm
Rocker arm Inside diameter 12 [0.4724]
Rocker arm to Shaft clearance –0.2 [–0.0079]
Crankcase
Camshaft hole diameter
Front 42 [1.6535] Ball bearing hole
No. 2 34 [1.3386]
No.3 33 (L3) [1.2992]
Rear 33 [1.2992]

Mitsubishi L2E Specifications

General

Engine Model	L2E
Number of Cylinders	2
Starting System	Electric starter
Lubrication System	Forced lubrication by trochoid pump
Cooling System	Water-cooled