丰田雅力士发动机1NZ-FE冷却系统修理手册(英文版)(可编辑)

2024年3月22日发(作者：传祺汽车图片)

丰田雅力士发动机1NZ-FE冷却系统修理手册（英文版）

（可编辑）

丰田雅力士发动机1NZ-FE冷却系统修理手册(英文版)

CO–1

1NZ-FE COOLING – COOLING SYSTEM

COOLING SYSTEM

ON-VEHICLE INSPECTION

CAUTION

Be sure that the ignition is off if you work near the

electric cooling fans or radiator grille With the

ignition

on the electric cooling fans may automatically start to

run if the engine coolant temperature is high andor the

air conditioning is on

1 CHECK COOLING SYSTEM FOR LEAKAGE

CAUTION

To avoid the danger of being burned do not remove

the radiator cap sub-assembly while the engine and

radiator assembly are still hot Thermal expansion

will cause hot engine coolant and steam to blow out

from the radiator assembly

a Fill the radiator assembly with engine coolant

then

attach a radiator cap tester

b Pump the tester to 137 kPa 14 kgfcm2 199 psi

then check that the pressure does not drop

If the pressure drops check the hoses radiator CO

assembly and water pump assembly for leakage If

there are no signs or traces of external engine

coolant leakage check the heater core cylinder

block and head

A106594

2 INSPECT RESERVOIR TANK ENGINE COOLANT

LEVEL

a The engine coolant should be between the LOW

and FULL lines when the engine is cold

HINT

If it is below the LOW line check for leakage and

add Toyota Super Long Life Coolant or similar high

quality ethylene glycol based non-silicate non-

amine non-nitrite and non-borate coolant with long-

life hybrid organic acid technology up to the FULL

line

3 INSPECT ENGINE COOLANT QUALITY

a Remove the radiator cap sub-assembly

CAUTION

To avoid the danger of being burned do not