M11 Plus Series Engines Operation and Maintenance Manual – 010-033   Turbocharger

Remove the intake and exhaust pipes from the turbocharger.

Remove the oil supply line from the turbocharger.

Remove the oil drain line from the turbocharger.

NOTE: Some engine applications use water-cooled turbochargers.

If a water-cooled turbocharger is used, drain the cooling system, and remove the water supply and return lines from the turbocharger.

Remove the v-band clamp, discharge elbow, and o-ring from the turbocharger compressor discharge outlet.

Remove the four turbocharger mounting nuts.

Remove the turbocharger and gasket.

Clean the turbocharger and exhaust manifold gasket surfaces.

Every 385,000 km [240,000 mi], 6,000 hours or 3 years, whichever comes first, inspect the turbocharger. Remove the air intake and the exhaust piping. Check the turbocharger as follows:

• Look for damaged or cracked compressor or turbine blades. Check to see that the turbocharger shaft spins freely.

If inspections or dimensional checks indicate a problem, contact a Cummins Authorized Repair Location for assistance. Refer to the model number on the turbocharger dataplate.

NOTE: The torque values given have been established using anti-seize compound as a lubricant.

Apply a film of high temperature anti-seize compound to the turbocharger mounting studs.

Use a new gasket and install the turbocharger.

Install and tighten the four mounting nuts.

NOTE: Some engine applications use water-cooled turbochargers.

If a water-cooled turbocharger is used, install the water supply and return lines to the turbocharger.

Install and tighten the turbocharger oil drain line.

Pour 50 to 60 cc [2.0 to 3.0 ounces] of clean 15W-40 engine oil in the turbocharger oil supply line fitting.

Install and tighten the turbocharger oil supply line.

Install the intake pipe and tighten the clamp.

Install the exhaust pipe and tighten the clamp.

If a water-cooled turbocharger is used, fill the cooling system. Refer to Procedure 008-018 (Cooling System) in Section 6.

Operate the engine and check for air leaks.