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Remove the radiator cap (A), wet the seal with engine coolant, then install it on the pressure tester (B) (commercially available). Use a small adapter H-901122-09 (C) (commercially available) to install the radiator cap.
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Apply a pressure of 93−123 kPa (0.95−1.25 kgf/cm
2
, 14−18 psi).
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Check for a drop in pressure.
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If the pressure drops, replace the cap.
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