Water Pump; Thermostat (Standard) - Mitsubishi S3L Service Manual

INSPECTION
Figure 206 Checking water pump
Figure 207 Testing thermostat
138 / 195 138 / 195

35.1 Water pump

Check the impeller and shaft for rotation. If they do not
rotate freely or have noise, replace the water pump
assembly.

35.2 Thermostat (standard)

Hang the thermostat in the pan of water as shown in
the illustration. The thermostat must be below the
surface of the water and its must be away from the
sides of the pan. Heat the water uniformly in the pan
and measure a temperature at which the valve starts
opening and a temperature at which the valve lift
(distance) is 8 mm (0.3 in.). Replace the thermostat if
defective.
Temperature at which
valve starts opening
Temperature at which
valve lift is 8 mm (0.3 in.)
WARNING
Water in the pan is hot. Any contact can cause
severe burns.
ENGLISH Service Manual Mitsubishi SL-Series diesel engines
COOLING SYSTEM
85 ± 1.5°C
(180 ± 2.7°F)
95°C (203°F)
Version 08/2004