1F-7 Engine Cooling System:
Thermostat Removal and Installation
S3RH0A1606006
Removal
1) Drain cooling system by loosening drain plug of
radiator referring to “Cooling System Flush and
Refill”.
2) Remove air cleaner assembly and resonator
referring to “Air Cleaner Element Removal and
Installation in Section 1D”.
3) Remove intake manifold referring to “Throttle Body
and Intake Manifold Removal and Installation in
Section 1D”.
4) Remove generator referring to “Generator
Dismounting and Remounting in Section 1J”.
5) Disconnect water hose (1) and heater hose (2) from
each pipe.
6) Remove thermostat case (3) with thermostat cap (4)
and water inlet pipe (5).
7) Remove water inlet pipe with thermostat cap from
thermostat case.
8) Remove thermostat.
Installation
Reverse removal procedure for installation noting the
following points.
• When positioning thermostat (1) on thermostat case
(2), be sure to position it so that air bleed valve (3)
comes at position as shown in the figure.
• Use new O-rings when installing.
• Adjust water pump belt tension referring to “Water
Pump / Generator Drive Belt Tension Inspection and
Adjustment”.
• Adjust A/C compressor belt tension (if equipped)
referring to “P/S Pump Drive Belt On-Vehicle
Inspection in Section 6C”.
• Refill cooling system with proper coolant referring to
“Cooling System Flush and Refill”.
• Verify that there is no coolant leakage at each
connection.
Thermostat Inspection
S3RH0A1606007
• Make sure that air bleed valve (1) of thermostat is
clean.
Should this valve be clogged, engine would tend to
overheat.
• Check to make sure that valve seat is free from
foreign matters which would prevent valve from
seating tight.
• Check thermostat seal (2) for breakage, deterioration
or any other damage.
• Check thermostatic movement of wax pellet as
follows:
– Immerse thermostat (1) in water, and heat water
gradually.
– Check that valve starts to open at specific
temperature.
Temperature at which valve begins to open
80 – 84
°
C (176 – 183
°
F)
Temperature at which valve become fully open
95 – 97
°
C (203 – 206
°
F)
Valve lift
More than 8 mm at 95
°
C (203
°
F)
1
5
4
3
2
I2RH0B160005-01
I2RH0B160006-01
I2RH01160011-01
Содержание Liana RH413
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