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Service Manual Mitsubishi SQ-Series diesel engines
Version 08/2004
MAINTENANCE STANDARDS TABLE
ENGLISH
MAINTENANCE STANDARDS
Fuel system
Injection nozzle
Valve opening pressure,
MPa (kgf/cm
2
) [psi]
14.22
(145)
[2063]
14.22 to 15.00
(145 to 153)
[2063 to 2177]
Spray cone angle 0°
Check nozzle with a hand
tester (at fuel oil
temperature 20°C [68°F]).
Replace the nozzle tip if the
spray pattern is still bad
after washing in clean fuel
oil.
Oil tightness of needle
valve seat
Apply pressure of 3.92 ± 0.25
MPa (40 ± 2.5 kgf/cm
2
) [569 ± 36
psi] with N2 gas and submerge in
an oil tank (at room temperature)
for more than 5 minutes. Check to
make sure there is no leakage.
Wash or replace nozzle tip.
Electrical system
Starter
Commutator
Diameter
32
[1.26]
31.4
[1.24]
Runout
0.05
[0.0020]
0.10
[0.0039]
Commutator mica depth
0.4 to 0.6
[0.016 to 0.024]
0.2
[0.008]
Brush
Length
18
[0.71]
11
[0.43]
Spring tension,
N (kgf) [lbf]
29 to 39
(3.0 to 4.0)
[6.5 to 8.8]
19.6
(2.0)
[4.4]
Pinion clearance
0.5 to 2.0
[0.020 to 0.079]
For 12V
For 24V (Option)
Alternator
Brush length
18.5
[0.728]
7
[0.276]
5 [0.197]
Option
(A7TA80AA)
(A3TN5776)
Resistance between slip
ring
3.4 At 20°C [68°F]
Group Inspection Point
Nominal
Value
Assembly
Standard
(Standard
Clearance)
Repair Limit
(Clearance)
Service
Limit
(Clearance)
Remark
No-load characteristics Magnetic switch operating voltage
Voltage, V Current, A Speed, rpm
8 volts or less, with pinion held at 2 mm [0.08 in.] position
from cranking position
11 130 or less 4000 or more
No-load characteristics Magnetic switch operating voltage
Voltage, V Current, A Speed, rpm
16 volts or less, with pinion held at 2 mm [0.08 in.] position
from cranking position
23 80 or less 3000 or more
Ω
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