Mack Truck TITAN (TD700 Series) Operator's Handbook Manual 21394652 - PDF DOWNLOAD

236 MAINTENANCE AND LUBRICATION TURBOCHARGER The engine turbocharger operates at very high speed, temperatures and pressure. Turbo bearing lubrication is critical, particularly for a newly installed turbo or one which has not been operated for a period of time and all oil has drained from the bearing and shaft surfaces. To avoid turbocharger bearing failure, the following instructions are recommended: • Start the engine at least every 30 days to ensure turbo bearing lubrication.

Operate engine at low idle for at least three minutes before increasing RPM or driving the vehicle.

• If the engine has not been run for more than 30 days, turbo pre-lube procedure is necessary: 1. Remove turbo air intake duct and oil line connection at turbo.

2. Fill oil inlet fitting to overflow with clean engine oil.

3. Using fingers at compressor wheel, carefully spin and wiggle the turbo shaft to distribute the oil over all bearing surfaces.

4. Reconnect air intake duct and again fill turbo oil port to overflow, connect oil line and start engine.

5. Operate engine at low idle for at least three minutes before increasing RPM or driving the vehicle.