engine overheat SUZUKI SWIFT 2000 1.G RG413 Service User Guide

6B-12 ENGINE COOLING
COOLING WATER PIPES OR HOSES
REMOVAL
1) Drain cooling system.
2) To remove these pipes or hoses, loosen clamp on each
hose and pull hose end off.
INSTALLATION
Install removed parts in reverse order of removal procedure, not-
ing the following.
Tighten each clamp securely.
Refill cooling system with proper coolant referring to “COOL-
ING SYSTEM REFILL”.
THERMOSTAT
REMOVAL
1) Drain cooling system by loosening drain plug of radiator
referring to “COOLING SYSTEM DRAINING”.
2) Remove air cleaner assembly and resonator referring to sec-
tion 6A1
3) Remove intake manifold referring to Section 6A1.
4) Remove generator referring to Section 6H.
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 thermo-
stat case.
8) Remove thermostat.
INSPECTION
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 mat-
ters which would prevent valve from seating tight.
Check thermostat seal (2) for breakage, deterioration or any
other damage.

ENGINE COOLING 6B-13
Check thermostatic movement of wax pellet as follows :
a) Immerse thermostat (1) in water, and heat water gradually.
b) 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°F)
Valve lift
: More than 8 mm at 95°C (203°F)
If valve starts to open at a temperature substantially below or
above specific temperature, thermostat unit should be replaced
with a new one. Such a unit, if reused, will bring about overcool-
ing or overheating tendency.
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 posi-
tion as shown in figure.
Use new O-rings when installing.
Adjust water pump belt tension referring to WATER PUMP/
GENERATOR DRIVE BELT TENSION INSPECTION AND
ADJUSTMENT in this section.
Adjust A/C compressor belt tension (if equipped) referring to
Section 1B.
Refill cooling system with proper coolant referring to “COOL-
ING SYSTEM REFILL”.
Verify that there is no coolant leakage at each connection.
2. Thermometer
3. Heater