Checking Radiator Water Leakage; Checking Opening Temperature Of Thermostat Valve - wsm 03-CR-E4 Workshop Manual

SERVICING
4. Checking and adjusting
3. Measure the time for the pressure to decrease to
specified pressure.
Pressure decreas- Service specifi-
ing time cation
NOTE
• If the measurement is less than the service
specification, replace the radiator cap.

4.7 Checking radiator water leakage

NOTE
• The pressure of the leak test is different for
each radiator specification.
Thus, refer to the test pressure of each radiator
specification to do the leakage test.
Tools required
• Radiator tester and an adapter
1. Fill a specified quantity of water into the radiator.
2. Set a radiator tester and an adapter on the radiator.
3. Increase the water pressure to the specified
pressure with the radiator tester and an adapter.
4. Check the radiator for water leakage.
Radiator water Service specifi-
leakage test cation
03-CR-E4,03-CR-TE4BG
More than 10 seconds for
pressure decrease
From 88 to 59 kPa
From 0.90 to
2
0.60 kgf/cm
From 13 to 8.6 psi
No leak at specified pres-
sure
NOTE
• For water leakages from the pinhole, replace
the radiator or repair with the radiator
cement.
• When water leak is too much, replace the
radiator.
4.8 Checking opening temperature of
thermostat valve
Tools required
• Thermometer
1. Push down the thermostat valve and put the thread
between the valve and the valve seat.
2. Put the thermostat and the thermometer in the
container and increase the temperature of the water
gradually.
3. Take the thread, and float the thermostat in the
water.
4. As the coolant temperature rises, the valve will
open, and the thermostat will separate from the
thread.
5. Measure the temperature at this moment.
Thermostat valve
Service specifi-
opening tempera-
cation
ture
4. ENGINE
80.5 to 83.5 ℃
176.9 to 182.3 ℉
4-101
KiSC issued 02, 2021 A