TM2361 (24JUN08) 9010-25-7 450DLC Excavator Operation and Tests 062608 PN=303 Tests Engine Compression Pressure Test SPECIFICATIONS Engine Compression Pressure 2942 kPa 29.4 bar 427 psi ESSENTIAL TOOLS Isuzu Part No. 5-8840-2675-0 Compression Gauge Isuzu Part No. 1-8531-7019-0 Adapter –UN–27JAN06 1. Batteries must be fully charged. 2. Clean area around glow plugs. 002645 3. Start engine and run until it reaches normal operating TX1 temperature. 4. Shut off engine and proceed with test. 5. Disconnect battery negative (-) terminal. 6. Shut off fuel supply. 7. Remove all glow plugs from engine. 8. Reconnect battery negative terminal. 9. Crank engine to remove any debris from glow plug bore. 10.
Connect adapter to compression gauge and install in a glow plug bore. 11. Crank engine, 200 rpm minimum, until compression reading is stabilized. Perform test three times for each cylinder and record readings. Specification Engine Compression—Pressure................................................. 2942 kPa 29 bar 427 psi 12. Readings should be approximately the same for each cylinder. Continued on next page JC89288,0000193 –19–18APR06–1/2 9010 25 7 SPECIFICATIONS Engine Compression Pressure 2942 kPa 29.4 bar 427 psi