Detroit Diesel Troubleshooting Diagrams

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DD15

DD15 Defective Starter Troubleshooting

Posted on October 10, 2023 by sam

Check as follows:‪ Verify that the engine will bar over by hand. If not, check for internal engine damage. Refer to “2.4 Internal Engine Damage” . If…

DD15

DD15 Empty Fuel Tank Troubleshooting

Posted on October 10, 2023 by sam

Check as follows:‪ Check OEM guidelines to determine the amount of fuel in fuel tank. If fuel is at recommended level, check for a weak…

DD15

DD15 Restrictive Air Filter Troubleshooting

Posted on October 10, 2023 by sam

Check as follows:‪ Check the restriction gauge. If the gauge show restriction, go to step 3 . If the reading is ok, go to the next step.…

DD15

DD15 Extended Crank Time Troubleshooting

Posted on October 10, 2023 by sam

Complete all other inspections (i.e. battery checks) prior to completing the tasks below.‪ Use DDDL7.0 (latest version) to check for stored or active codes and…

DD15

DD15 External Oil Leaks Troubleshooting

Posted on October 10, 2023 by sam

Check as follows:‪ Clean the engine. Start and run the engine to operating temperature 88°C (190°F). Check for leaks at oil lines, connections, mating joints,…

DD15

DD15 General Check for Excessive Oil Consumption Troubleshooting

Posted on October 10, 2023 by sam

Check as follows:‪ Check first for external oil leaks. Refer to “4.2 External Oil Leaks” . If no external leaks are found, go to the next step.…

DD15

DD15 Obstruction or Damage to Breather System

Posted on October 10, 2023 by sam

Check as follows:‪ PERSONAL INJURY ‪ To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake…

DD15

DD15 Defective Air Compressor Troubleshooting

Posted on October 10, 2023 by sam

Check as follows:‪ Perform a crankcase pressure test and record the test results using the following: Crankcase pressure — Full load, maximum in. H2 O operating…

DD15

DD15 Restricted Air Cleaner Element

Posted on October 10, 2023 by sam

Check as follows:‪ Check the restriction gauge. If the gauge show restriction, go to step 3 . If the reading is ok, go to the next step.…

DD15

DD15 Improper Grade of Diesel Fuel

Posted on October 10, 2023 by sam

Check as follows:‪ Acquire a fuel sample from the vehicle fuel tank(s). Submit fuel sample for an ASTM test analysis. If the fuel meets specifications,…

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