1F-18 Engine Cooling System:
Impeller / Shaft
Visually inspect the impeller and its shaft for damage.
Replace the impeller or shaft if necessary.
Impeller Shaft Journal
Visually inspect the journal for damage or scratch.
Replace the water pump body if necessary.
Specifications
Service Data
B823H11607001
Thermostat + Radiator + Fan + Coolant
I823H1160052-01 I823H1160053-01
Item Specification Note
Thermostat valve opening
temperature
Approx. 82 qC (180 qF) —
Thermostat valve lift Over 8 mm (0.31 in) and at 95 qC (203 qF) —
ECT sensor resistance
20 qC
(68 qF)
Approx. 2.45 k: —
50 qC
(122 qF)
Approx. 0.811 k: —
80 qC
(176 qF)
Approx. 0.318 k: —
110 qC
(230 qF)
Approx. 0.142 k: —
Radiator cap valve opening
pressure
93 – 123 kPa (0.93 – 1.23 kgf/cm
2
, 13.2 – 17.5 psi) —
Cooling fan thermo-switch
operating temperature
OFF o ON Approx. 105 qC (221 qF) —
ON o OFF Approx. 100 qC (212 qF) —
Engine coolant type
Use an anti-freeze/coolant compatible with aluminum
radiator, mixed with distilled water only, at the ratio of 50:50.
—
Engine coolant including reserve
Reserve tank
side
Approx. 250 ml (0.3/0.2 US/lmp qt) —
Engine side Approx. 2 650 ml (2.8/2.3 US/lmp qt) —
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