SERVICE DATA
2-2
1. Maintenance service data
1.1 General
1.2 Basic engine
Table 2-1 Maintenance service data table - General Unit: mm [in.]
Inspection point Nominal Standard Limit Remark
Maximum rotation speed
(rated rotation speed used as reference)
Varies depending on the specifications Adjust governor setting.
Minimum rotation speed
Compression pressure
2.94 MPa
{30 kgf/cm²}
[427 psi]
2.55 MPa
{26 kgf/cm²}
[370 psi]
When oil and water tempera-
tures
at 20 to 30°C [68 to 86°F]
(150 to 200 min
-1
) or more
Engine oil
pressure
(at 750 min
-1
)
0.1 MPa
{1 kgf/cm²}
[14 psi] or more
0.05 MPa
{0.5 kgf/cm²}
[7 psi]
(at 1500 min
-1
)
0.29 to 0.49 MPa
{3 to 5 kgf/cm²}
[43 to 71 psi]
0.15 MPa
{1.5 kgf/cm²}
[21 psi]
When oil temperature is
70 to 90°C [158 to 194°F].
Valve timing
Inlet valve
Open BTDC 30°
± 3° (Crank angle)
Close ABDC 50°
Exhaust valve
Open BBDC 74°
Close ATDC 30 °
Valve clearance (when cold) 0.25 [0.0098] Both inlet and exhaust
Fuel injection timing Varies depending on the specifications
Fan belt deflection
(crankshaft pulley to alternator pulley)
Applox. 13 [0.51]
Amount of deflection when
pressed with the thumb firmly.
(98 N {10 kgf} [72 lbf])
Table 2-2 Maintenance service data table - Basic engine (1 / 5) Unit: mm [in.]
Inspection point Nominal Standard Limit Remark
Rocker
Rocker arm inside diameter
ø 19
[0.75]
19.01 to 19.03
[0.7484 to 0.7492]
Rocker shaft outside diameter
ø 19
[0.75]
18.98 to 19.00
[0.7472 to 0.7480]
Clearance between rocker arm and shaft
0.01 to 0.05
[0.0004 to 0.0020]
0.07
[0.0028]
Valve and
valve guide
Valve stem
outside diameter
Inlet
ø 8
[0.31]
7.940 to 7.955
[0.3126 to 0.3132]
7.900
[0.3110]
Exhaust
ø 8
[0.31]
7.920 to 7.940
[0.3118 to 0.3126]
7.850
[0.3091]
Clearance between
valve stem and
guide
Inlet
0.045 to 0.075
[0.0018 to 0.0030]
0.130
[0.0051]
Exhaust
0.060 to 0.095
[0.0024 to 0.0037]
0.150
[0.0059]
Height to top of valve guide
15.5
[0.610]
15.1 to 15.6
[0.594 to 0.614]
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