3.9.1. Coolant pressure cap
Check the pressure valve opening pressure
using a expansion tank cap tester. Replace
the filler cap assembly if the measured valve
does not reach the specified limit. (pressure
valve opening pressure : 0.9 kg/cm
2
)
Note :
Because it is dangerous to open
the pressure cap quickly when
coolant is hot, after lowering the
inside pressure of the tank by
slow-opening at first open it fully.
3.9.2. Anti-freeze
The anti-freeze, 50% of the whole coolant,
is always to be used to prevent the cooling system from the corrosion. And in winter the
amount of anti-freeze shown in the following table should be used in accordance with the
ambient temperature.
As the individual freezing points corresponding to the proportions of antifreeze in the table
are subject to change slightly according to the kind of antifreeze, you must follow the
specifications provided by the antifreeze manufacturer.
As the ratio of antifreeze in the mixture decrease each time new coolant is added to make up
for the loss coolant resulting from engine operation, Check the mix ratio with every
replenishment of coolant, and top up as necessary.
- 22 -
Rediater Cap
Rediater
EA5O3002
Ambient
Cooling water (%)
Anti-freeze (%)
Temperature (
˚
C)
Over -10
85
15
-10
80
20
-15
73
27
-20
67
33
-25
60
40
-30
56
44
-40
50
50
