FILTER 3I0032 - Caterpillar

Safety precautions and warnings are provided in this manual and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons.The hazards are identified by the safety alert symbol which is followed by a signal word such as danger, warning, or caution. The "" safety alert symbol is shown below.
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This safety alert symbol means:Pay attention!Become alert!Your safety is involved.The message that appears under the safety alert symbol explains the hazard. Operations that may cause product damage are identified by "" labels on the product and in this publication.Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The safety information in this document and the safety information on the machine are not all inclusive. You must determine that the tools, procedures, work methods, and operating techniques are safe. You must determine that the operation, lubrication, maintenance, and repair procedures will not damage the machine. Also, you must determine that the operation, lubrication, maintenance, and repair procedures will not make the machine unsafe.The information, the specifications, and the illustrations that exist in this guideline are based on information which was available at the time of publication. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service that is given to the product. Obtain the complete, most current information before you start any job. Caterpillar dealers can supply the most current information.Summary
This document covers the disassembly, inspection and reassembly procedures for the Electronic Fluid Temperature Control (EFTC) common on C175 Gensets and Locomotive engines. The EFTC must be inspected at every engine overhaul. The EFTC is known informally as the Electronic Thermostat (ESTAT). The EFTC uses a 6 inch flange to control the temperature of the engine coolant pump outlet temperature. The EFTC is a three-way valve that controls coolant flow from the engine block to either the radiator or back to the jacket water pump.Note: The 286-4571 Thermostatic Valve Gp can be upgraded to the current 387-8211 Thermostatic Valve Gp by using the 399-8134 Electric Motor Kit .References
ReferenceSpecial Instruction, REHS7950, "Installing the 387-8211 Thermostatic Valve Gp and the 387-8214 Thermostatic Valve Gp onto C175 Engines"ReferenceReuse And Salvage Guidelines, SEBF8187, "Standardized Parts Marking Procedures"Cleaning Recommendations
Personal injury can result when using cleaner solvents.To help prevent personal injury, follow the instructions and warnings on the cleaner solvent container before using.
Before you inspect a part, clean the part thoroughly in order to remove all debris, paint, and oil.
Use a proper lifting device to prevent damage to the part. Also, use a proper lifting device to provide safety to the operator when you lift the part.
During cleaning, do not damage machined surfaces.
Use pressurized air to dry parts.Components
The EFTC consists of four main components: the fluid valve, the temperature control module, the stepper motor and the engine coolant pump outlet temperature sensor. These main components and some sub components must be inspected for reuse at overhaul.
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