Radiator - Toyota Land Cruiser 1988 Repair Manual

C0-10
COOLING SYSTEM- Thermostat, Radiator
C00532
INSTALLATION OF THERMOSTAT
1. PLACE THERMOSTAT IN WATER OUTLET
HOUSING
2. INSTALL WATER OUTLET
3.
4.
5.
6.
7.
(a) Install a new gasket and the water outlet with the
four bolts. Torque the bolts.
Torque: 185 kg-em (13 ft-lb, 18 N·m)
(b) Install the clamp bolt of ISC water by-pass pipe.
CONNECT COLD START INJECTOR TIME
SWITCH AND WATER TEMPERATURE SWITCH
CONNECTORS
CONNECT TWO VACUUM HOSES OF BVSV
CONNECT RADIATOR INLET AND WATER
BY-PASS HOSES
FILL WITH ENGINE COOLANT (See page C0-4)
START ENGINE AND CHECK FOR LEAKS
RADIATOR
CLEANING OF RADIATOR
CLEAN RADIATOR
Using water or steam cleaner, remove any mud and dirt
from the radiator core.
CAUTION: If using a high pressure type cleaner.
be careful not to deform the fins of the radiator
core. If the cleaner nozzle pressure is 30-35 kg/
cm
2
(427- 498 psi, 2,942- 3,432 kPa), keep a dis-
tance of at least 40- 50 em (15.75- 19.69 in.)
between the radiator core and cleaner nozzle.
INSPECTION OF RADIATOR
1. INSPECT RADIATOR CAP
Using a radiator cap tester, pump the tester until the relief
valve opens. Check that the valve opens between 0. 75 kg
/cm
2
(1 0.7 psi, 74 kPa) and 1.05 kg/cm
2
(14.9 psi, 103
kPa).
Check that the pressure does not drop rapidly when pres-
sure on the cap is below 0.6
kg/~m 2
(8.5 psi, 59 kPa).
If either check is not within limits, replace the cap.
2. INSPECT COOLING SYSTEM FOR LEAKS
(a) Fill the radiator with coolant and attach a radiator
cap tester.
(b) Warm up the engine.
(c) Pump it to 1.2 kg/cm
2
(17 psi, 118 kPa), check that
pressure does not drop.
If the pressure drops, check for leaks from the hoses,
radiator or water pump. If no external leaks are found,
check the heater core, block and head.