Air Intake System Leakage Test NOTE: The following test procedure requires that the air intake be sealed off to pressurize the system. Using a plastic bag to seal the air intake filter is used as an example. T5906AP –UN–23FEB89 CAUTION: Do not start the engine during this test procedure. Plastic bag (or whatever material/object used to seal intake) can be sucked into engine. Continued on next page JC89288,000006A –19–18APR06–1/2 TM2361 (24JUN08) 9010-25-9 450DLC Excavator Operation and Tests 062608 PN=305 Tests 1. Remove air filter restriction indicator switch (A). 2. Install parts as shown. 3. Start engine. 4. Slowly cover the air cleaner inlet using a piece of heavy cardboard or a board.
5. Check reading on gauge when air filter restriction indicator comes on. Specification Air Filter Restriction Indicator Must Come On At—Vacuum.................. 5.0 kPa (50 mbar) (20 in. water) If reading is not within specifications, install a new indicator switch. A—Air Filter Restriction Indicator Switch B—Tee –UN–17DEC90 C—Barbed Fitting D—Tube E—Barbed Fitting F—Coupler G—Gauge T7350EP JC89288,0000195 –19–26JAN06–2/2 9010 25 9