Freshwater Pump Maintenance For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)

October 31, 2024

Disassembly & Reassembly Of The Freshwater Pump For Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)


Disassembly of the Freshwater Pump For Detroit Diesel 71 Series Inline (271, 371, 471, 671)


1. Preparation and Tools


2. Draining the Coolant


3. Step-by-Step Removal of the Freshwater Pump


Cleaning Freshwater Pump Components


1. Use of Non-Corrosive Solvent

2. Drying and Inspection


1. Impeller and Shaft Inspection

2. Bearings and Seal Integrity

Final Inspection and Preparation for Reassembly


Reassembly Of The Freshwater Pump For Detroit Diesel 71 Series Inline (271, 371, 471, 671)




1. Lubricate Moving Parts

2. Reinstall the Impeller

3. Reattach Pump Housing and Mounting Bolts

4. Reconnect Hoses and Belts

5. Final Coolant Refill and Bleeding

Preventive Checks for the Freshwater Pump


1. Inspect for Leaks

2. Test Coolant Flow

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Freshwater Pump Maintenance For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)

Guidelines for Coolant For Detroit 71 Series Inline Engines (271, 371, 471, 671)

October 31, 2024

Everything You Need To Know About Coolant For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)


1. Types of Coolant For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)


2. Considerations for High-Temperature and Freezing Conditions For Your Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)


Chemicals & Coolant For Your Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)


Importance of Using Demineralized or Distilled Water

Impacts of High Sulfate or Hard Water on the Heat Exchanger and Radiator

Methods to Mitigate the Effects of High Sulfate or Hard Water

Filling and Bleeding the Cooling System For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)


1. Coolant Filling Procedure

2. Bleeding the System

3. Importance of Regular Coolant Level Checks

        Routine Cooling System Checks and Maintenance For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)



1. Checking Coolant Levels

2. Inspecting Hoses and Connections

3. Coolant Quality and Replacement Interval

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Maintaining The Heat Exchanger Core For Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)

October 31, 2024

Heat Exchanger Core Cleaning For Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)


Step-by-Step Instructions for Cleaning the Heat Exchanger Core


Recommended Frequency of Cleaning


Pressure Testing the Core for Leaks


Preparation for Pressure Testing:


Apply Air Pressure:


Diagnose and Repair Leaks:


Corrosion Prevention in Saltwater Environments


Best Practices for Preventing Corrosion


Importance of Repairing or Replacing the Core if Leaks or Corrosion are Detected


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Maintaining The Heat Exchanger Core For Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)