CO-12
COOLING SYSTEM Radiator
RADIATOR
CLEANING OF RADIATOR
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 30-35 kg/cm
2
(427-498
psi, 2,942-3,432 kPa), keep a distance of at least
40-50 cm (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 and measure
the relief valve opening pressure.
Standard opening pressure:
0.75-1.05 kg/cm
2
(10.7-14.9 psi, 74-103 kPa)
Minimum opening pressure:
0.6 kg/cm
2
(8.5 psi, 59 kPa)
If the opening pressure is less than minimum, replace the
radiator 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
(17.1 psi, 118 kPa), check that
pressure does not drop.
If the pressure drops, check for leaks the hoses, radiator or
water pump. If no external leaks are found, check the heater
core, cylinder block and head.
Radiator Cap Tester
Radiator Cap
Radiator Cap Tester
Summary of Contents for 1HD-T
Page 1: ......
Page 53: ...EM 42 ENGINE MECHANICAL Timing Gears TIMING GEARS COMPONENTS ...
Page 65: ...EM 54 ENGINE MECHANICAL Cylinder Head CYLINDER HEAD COMPONENTS ...
Page 95: ...EM 84 ENGINE MECHANICAL Cylinder Block CYLINDER BLOCK COMPONENTS ...
Page 133: ...TURBOCHARGER SYSTEM Turbocharger TC 9 COMPONENTS ...
Page 145: ...FU 6 FUEL SYSTEM Fuel Heater System FUEL HEATER SYSTEM SYSTEM CIRCUIT ...
Page 166: ...FUEL SYSTEM Injection Pump FU 27 INJECTION PUMP REMOVAL OF INJECTION PUMP ...
Page 169: ...FU 30 FUEL SYSTEM Injection Pump COMPONENTS ...
Page 170: ...FUEL SYSTEM Injection Pump FU 31 COMPONENTS Cont d ...
Page 171: ...FU 32 FUEL SYSTEM Injection Pump COMPONENTS Cont d ...
Page 251: ...LU 4 LUBRICATION SYSTEM Troubleshooting TROUBLESHOOTING ...
Page 255: ...LU 8 LUBRICATION SYSTEM Oil Pump OIL PUMP COMPONENT ...
Page 272: ...ST 4 STARTING SYSTEM Pre Heating System Super Glow Type TIMER CHARACTERISTIC DIAGRAM Cont d ...
Page 282: ...ST 14 STARTING SYSTEM Starting System Circuit STARTING SYSTEM CIRCUIT Cont d ...
Page 340: ...B 1 STANDARD BOLT TORQUE SPECIFICATIONS Page STANDARD BOLT TORQUE SPECIFICATIONS B 2 ...
Page 343: ...C 1 SSTAND SSM Page SST SPECIAL SERVICE TOOLS C 2 SSM SPECIAL SERVICE MATERIALS C 6 ...