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Service Manual Mitsubishi SL-Series diesel engines
Version 08/2004
ENGLISH
GENERAL COOLING SYSTEM
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COOLING SYSTEM
34 GENERAL
34.1 Schematic
34.2 Specifications (standard)
1
Figure 204 Schematic
Cooling fan
Radiator
Water bypass hose
Thermostat
Water pump
1. All specifications are subject to change without any prior
notice.
Engine model S3L/S3L2 S4L/S4L2
Fan belt (for farm or industrial engine)
LL or HM type (width = 10.7 mm (0.42 in.), V angle = 38°, outer
circumference = 980 mm (38.6 in.)
Cooling fan Suction type
No. of blades = 5,
diameter = 320 mm (12.6 in.)
No. of blades = 5,
diameter = 360 mm (14.2 in.)
Water pump
Centrifugal type
Thermostat
Temperature at which valve
starts opening
82 ± 1.5°C (180 ± 2.7°F)
Temperature at which valve lift
is 8 mm (0.3 in.)
95°C (203°F)
Thermo
switch
Type Bimetal
Temperature at which switch
is turned ON
111 ± 3.5°C (232 ± 6.3°F)
Temperature difference for
ON-OFF control
8 ± 3.5°C (46.4 ± 6.3°F)
Resistance in thermounit
50°C (122°F): 80 ± 10 Ω
80°C (176°F): 29.5 ± 2.5 Ω
120°C (248°F): 10 ± 0.3 Ω
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