DD15 Restricted Air Cleaner Element Troubleshooting

Check as follows:‪

1. Check the restriction gauge.
   1. If the gauge show restriction, go to step 3 .
   2. If the reading is ok, go to the next step.
2. Install a dyno and check air line restriction with a manometer.
   1. If air line restriction is high, find the source of air inlet blockage.
   2. If air line restriction is fine, go to the next step.
3. Remove the air filter element from the air cleaner container; refer to OEM guidelines.
4. Visually inspect the air cleaner element for damage or clogging.
   1. 1. If no damage or clogging is found, check the charge air cooler; refer to “10.5 Restricted or Cracked Charge Air Cooler or Leaking Intake Manifold” .
      2. If damage or clogging is found; go to the next step.

   Note: Replace the air filter, if close to a maintenance interval.

5. Remove and replace the damaged or clogged air filter element; refer to OEM guidelines.
   

   ENGINE EXHAUST ‪
   To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic.‪

6. Start and run the engine.
7. Test drive the vehicle to ensure lack of power has been resolved.
   1. If lack of power did not occur during the test drive, no further troubleshooting is required. Shut down the engine.
   2. If lack of power occurred during the test drive, shut down the engine. Check the charge air cooler; refer to “10.5 Restricted or Cracked Charge Air Cooler or Leaking Intake Manifold” .