Toyota 3S-GE Repair Manual page 341

EG-327
ENGINE — COOLING SYSTEM
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RADIATOR
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RADIATOR CLEANING
Using water or a steam cleaner, remove any mud and
dirt from the radiator core.
NOTICE: If using a high pressure type cleaner. be careful
not to deform the fins of the radiator core. If the cleaner
nozzle pressure is 2.942 — 3,432 kPa (30 — 35 kgf/cm',
427 — 498 psi), keep a distance of at least 40 — 50 cm
(15.75 — 19.69 in.) between the radiator core and cleaner
nozzle.
RADIATOR INSPECTION
REMOVE WATER FILLER CAP
CAUTION: To avoid the danger of being burned. do not
remove the water filler cap while the engine and radiator
are still hot. as fluid and steam can be blown out under
pressure.
INSPECT WATER FILLER CAP
NOTICE: When performing steps (a) and (b) below, keep
the radiator pump tester at an angle of over 30° above
the horizontal. I
Using a radiator cap tester, slowly pump the tester
and check that air is coming from the relief valve.
Pump speed:
1 push/3 seconds or more
NOTICE: Push the pump at a constant speed.
If air is not coming from the relief valve, replace the
water filler cap.
Pump the tester several times, and measure the relief
valve opening pressure.
Pump speed:
1st time
1 push/1 second or less
2nd time or more
Any speed
Standard opening pressure:
74 — 103 kPa
(0.75 — 1.05 kgf/cm', 10.7 — 14.9 psi)
Minimum opening pressure:
59 kPa (0.6 kgf/cm'. 8.5 psi)
If the opening pressure is less than minimum, replace
the water filler cap.