MBE 4000 SERVICE MANUAL 17.4 RESTRICTED AIR CLEANER ELEMENT To determine if a restricted air cleaner element is causing lack of power, perform the following steps: 1. Remove the air filter element from the air cleaner container; refer to OEM guidelines. 2. Visually inspect the air cleaner element for damage or clogging. [a] If no damage or clogging is found, check the charge air cooler; refer to section 17.5. [b] If damage or clogging is found; refer to section 17.4.1. NOTE: Replace the air filter, if close to a maintenance interval. 17.4.1 Air Filter Element Replacement Perform the following steps to replace the air filter element: 1.
Remove and replace the damaged or clogged air filter element; refer to OEM guidelines. 2. Verify air filter element replacement; refer to section 17.4.1.1. 17.4.1.1 Test the Engine with Replaced Air Filter Element Perform the following steps to determine if the new filter element resolved lack of power: To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake is set, and the wheels are blocked. ENGINE EXHAUST To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic. 1. Start and run the engine. 2. Test drive the vehicle to ensure lack of power has been resolved.
[a] If lack of power did not occur during the test drive, no further troubleshooting is required. Shut down the engine. [b] If lack of power occurred during the test drive, shut down the engine. Check the charge air cooler; refer to section 17.5. All information subject to change without notice. (Rev. 2007) 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION From Bulletin 1–MBE 4000–07 17-15