Explorer Patriot 430, Service Manual

Page: 163 / 235

System Test
Test on the filler cap
Hermetically seal the filler cap, apply water
and pressure to the filler cap. Replace it with
new one if found failing to maintain the
specified pressure within a given time limit, or
the opening pressure is too high or too low.
The specified pressure shall be maintained at
least for 6 seconds in the test
Relief pressure for the filler cap: 0.9-1. 05
kgf/cm2
Apply pressure to the radiator, engine and
water hose to check for any leakage
Caution
High pressure may damage the radiator.
Never use pressure which exceeds
1.05 kg/cm2.
If the system fails to maintain the specified
pressure for at least 6 seconds, repair or
replace parts.
Change of coolant
Warning
Never attempt to carry out service work on
the cooling system unless the engine is
completely cooled down, otherwise, you may
get scalded. Remove the front center cover,
and then remove filler cap. Place a water pan
under the water pump; loosen the drain bolt to
drain out the coolant. reinstall the drain bolt.
Refilling system with coolant and bleeding the
air bubbles. Run the engine, and remove
by-pass pipe. Check by-pass hole whether
has the air bubble to emit. If emits without the
air bubble, only has the coolant to flow out,
then backflow pipe joint on, engine flameout.
Remove radiator filler cap.
Starts the engine, inspects does not have the
air bubble in the radiator coolant, also the
coolant liquid level is stable. stop the engine.
Add coolant to proper level if necessary.
Screw and tighten up the radiator filler cap.
Caution
In order to avoid the water tank rusting,
please do not use the unclear trade mark
refrigerant.
Pressure tester Filler cap
Radiator filler cap
Revers tank cap
Drain bolt
By-pass pipe