Subaru 2009 IMPREZA Service Manual page 1204

COOLING
7. Radiator Cap
A: INSPECTION
1) Attach the radiator cap tester to radiator cap.
2) Increase pressure until the radiator cap tester
gauge pointer stops. Radiator cap is functioning
properly if it holds the service limit pressure for 5 —
6 seconds. Replace the cap if it is opened under a
pressure less than the service limit value.
Coolant filler tank side
Specification:
93 — 123 kPa
(0.95 — 1.25 kg/cm
Service limit:
83 kPa (0.85 kg/cm
Radiator side
Specification:
122 — 152 kPa
(1.24 — 1.55 kg/cm
Service limit:
112 kPa (1.14 kg/cm
CAUTION:
• Be sure to remove foreign matter and rust
from the cap in advance. Otherwise, results of
pressure test will be incorrect.
• Do not confuse the cap of coolant filler tank
and cap of radiator.
Radiator Cap
CO-00044
2
, 14 — 18 psi)
2
, 12 psi)
2
, 18 — 22 psi)
2
, 16 psi)
CO(H4DOTC)-24