MITSUBISHI DIESEL ENGINE S4Q2-T Caterpillar


Cooling System

Usage:

Removal of Cooling System

Disassembly, Inspection and Reassembly Of Cooling System

Water Pump

Inspection of Water Pump


Inspection of impeller and shaft rotation condition

If the inspection of the impeller and shaft finds abnormal noise or rough rotation, replace the assembly.

Thermostat

Disassembly of Thermostat

Inspection of Thermostat


Inspection of thermostat

To test the thermostat operation, immerse the thermostat in a container filled with water, and heat the water while measuring the water temperature. Record the temperature at which the valve starts to open and the temperature at which the valve lift becomes 8 mm [0.3 in.] or more.

NOTE:

(a) Stir the water in the container to ensure uniform temperature distribution.

(b) When installing the thermostat, be sure to check the valve opening temperature indication stamped on the upper face of the thermostat mounting flange.

Overheating Warming Unit (Thermo Switch)

Inspection of Overheating Warming Unit


Overheating warming unit

Immerse the temperature sensor in oil, and measure the resistance while increasing the oil temperature. If the temperature measurement exceeds the standard value significantly, replace the thermo switch.

------ WARNING! ------


Since the inspection requires heating of oil to high temperatures, be careful not to get burns or start a fire.

--------WARNING!------

Installation of Cooling System

Installation of Cooling System

Caterpillar Information System:

MITSUBISHI DIESEL ENGINE S4Q2-T Lubrication System
MITSUBISHI DIESEL ENGINE S4Q2-T Fuel System
MITSUBISHI DIESEL ENGINE S4Q2-T Engine Main Parts
MITSUBISHI DIESEL ENGINE S4Q2-T Overhaul Instructions
MITSUBISHI DIESEL ENGINE S4Q2-T Basic And Special Tools
MITSUBISHI DIESEL ENGINE S4Q2-T Maintenance Standards
MITSUBISHI DIESEL ENGINE S4Q2-T General
MITSUBISHI DIESEL ENGINE S4Q2-T Safety Cautions
MITSUBISHI DIESEL ENGINE S4Q2-T How to Use This Manual
MITSUBISHI DIESEL ENGINE S4Q2-T Introduction
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