Mitsubishi S12A2 User Manual

2-13
Chapter 2 SERVICE DATA
1.4 Maintenance Service Data of Lubrication System
Unit: mm [in.]
Item Nominal value Standard value Limit value Remarks
Oil pump
Drive gear and driven gear backlash
0.100 to 0.200
[0.0039 to 0.0079]
0.400
[0.0157]
Backlash between oil pump gear and
crankshaft gear
0.12 to 0.18
[0.0047 to 0.0071]
Top clearance between gear teeth and
case
0.150 to 0.230
[0.0059 to 0.0091]
0.350
[0.0138]
Side clearance
between gear
width and case
depth
P/N:32635-20010
0.130 to 0.200
[0.0051 to 0.0079]
0.250
[0.0098]
P/N:32635-10020
0.130 to 0.300
[0.0051 to 0.0118]
0.350
[0.0138]
Drive shaft outside diameter
ø34 [1.34]
33.944 to 33.960
[1.3364 to 1.3370]
33.920
[1.3354]
Driven shaft outside diameter
33.944 to 33.960
[1.3364 to 1.3370]
33.920
[1.3354]
Bushing inside diameter
34.000 to 34.025
[1.3386 to 1.3396]
34.055
[1.3407]
Safety valve opening pressure
1.42 MPa
{14.5 kgf/cm²}
[206 psi]
Safety valve spring installed length/load 97/833.6 N
{85 kgf}
[187.4 lbf]
Free length of safety valve spring 120 [4.7244]
Relief valve
Valve opening pressure
0.55 MPa
{5.6 kgf/cm²}
[80 psi]
Spring free length 147 [5.7874]
Oil filter alarm
Turn on start pressure (differential pres-
sure)
0.165 ± 0.015 MPa
{1.68 ± 0.15 kgf/cm²}
[24±2 psi]
Bypass valve Valve opening pressure
0.44 ± 0.05 MPa
{4.49 ± 0.51 kgf/cm²}
[64± 7 psi]

Mitsubishi S12A2 Specifications

General

Brand	Mitsubishi
Model	S12A2
Category	Engine
Language	English