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COOLING SYSTEM 3-9
1. Pressure Tester
2. Radiator Cap
1. Steam Gun Running Direction
.Watching the pressure gauge, pump the pressure tester
to build up the pressure. The cap must open at the relief
pressure (the gauge pointer flicks down). Also the cap
must hold any pressure less than the relief pressure for
at least 6 seconds.
Radiator Cap Inspection
.Check the condition of the top and bottom valve seals
of the radiator cap.
* If anyone of them shows visible damage, replace the
cap.
Radiator Cap Relief Pressure
Standard: 93 ~ 123 kPa
(0.95 -1.25 kg/cm2, 14 -18 psi)
*If the cap cannot hold the specified pressure, or if it
holds too much pressure, replace it with a new one.
1 .Bottom Valve Seal
2. Top Valve Seal
3. Valve Spring
.Install the cap on a cooling system pressure tester.
NOTE
0 Wet the cap sealing surfaces with water or coolant to
prevent pressure leakage.