Centinel System – Repair Manual – 010-033   Turbocharger

ISX Automotive with CM570, QSX15 with CM570 and Power Generation with CM570

• To install the turbine housing, position the V-band clamp over the bearing housing and align the ink marks applied during the disassembly process.
• Apply anti-seize compound to the bearing housing locating bore of the turbine housing.
• Carefully slide the bearing and compressor housing assembly into the turbine housing. Use the ink alignment mark to locate the turbine housing assembly in the correct orientation with the turbine housing.

Place the new V-band clamp in the correct orientation and torque the locknut.

Torque value for Cummins®-branded turbochargers.

Torque value for Holset®-branded turbochargers.

Loosen the locknut 180 degrees, and torque the locknut.

Torque value for Cummins®-branded turbochargers.

Torque value for Holset®-branded turbochargers.

Make certain the rotor assembly rotates freely and neither compressor wheel or turbine wheel is rubbing against the housing.

ISX Automotive with CM570, QSX15 with CM570, and Power Generation with CM570

• Apply a film of high-temperature anti-seize compound, Part Number 3823097, or equivalent, to the turbocharger mounting studs.

WARNING  This component weighs 23 kg [50 lb] or more. To reduce the possibility of personal injury, use a hoist or get assistance to lift this component.

NOTE: If the exhaust manifold and turbocharger were removed together in order for the turbocharger to clear the lubricating oil cooler assembly, see the following procedure for installation of the exhaust manifold. Refer to Procedure 011-007 in Section 11.

Install a new mounting gasket, the turbocharger, and the four mounting nuts.

Tighten the mounting nuts.

Torque value for the standard nut:

Torque value for the Spiralock™ nut (identified by “SPL” on the nut flange):

Install the discharge elbow and clamp onto the charge-air cooler pipe connection.

Do not tighten the clamp until the elbow is installed on the turbocharger.

If a new turbocharger is being installed, the variable geometry turbocharger actuator from the original turbocharger must be reused.

Refer to Procedure 010-134 in Section 10.

Install a new o-ring, the clamp, and the discharge elbow to the turbocharger.

Tighten the clamp.

Install a new gasket, oil drain tube, and capscrews.

Tighten the capscrews.

Install the turbocharger anti-rotation brace (if equipped) . The end rests on the oil cooler housing.

This brace requires longer, 1.25 mm [0.049 in], capscrews.

Tighten the capscrews.

Pour approximately 50 to 60 cc [1.7 to 2 oz] of clean engine oil into the turbocharger oil supply opening.

CAUTION  Proper routing of the turbocharger oil supply tube is critical to prevent failure. Avoid any tube-to-metal contact. (The inlet supply fitting must be oriented slightly off vertical to allow proper alignment.)

If installing a new turbocharger, make sure the turbocharger is aligned, loosen the compressor and turbine v-bands, and adjust as needed. Tighten the v-bands.

If installing a new turbocharger, install the male union elbow.

Install the turbocharger oil supply tube on the elbow.

Install the intake and exhaust pipes to the turbocharger. Tighten the clamp.

Variable Geometry

• Apply a film of high-temperature anti-seize compound, Part Number 3823097, to the turbocharger mounting studs.

WARNING  This component weighs 23 kg [50 lb] or more. To reduce the possibility of personal injury, use a hoist or get assistance to lift this component.

CAUTION  When installing lifting eye, be sure the shoulder of the lifting eye is bottomed against bearing housing. Failure to do so can result in failure of lifting eye and personal injury.

CAUTION  If a lifting eye is installed in turbocharger bearing housing, it is to be used exclusively for turbocharger removal and installation. It is not to be used in removal of the exhaust manifold, or engine. Doing so will cause damage to the turbocharger.

CAUTION  Do not rotate the turbocharger turbine housing. Loosening turbine v-band and rotating the turbine housing can cause damage to internal variable geometry mechanism.

The capscrew in the top of the turbocharger bearing housing can be removed and replaced with a lifting eye to aid in the installation of the turbocharger.

Install a new gasket, the turbocharger, and the four mounting nuts. Tighten the mounting nuts.

Install the discharge elbow and clamp onto the charge-air cooler pipe connection.

Do not tighten the clamp until the elbow is installed on the turbocharger.

Install a new o-ring, the clamp, and the discharge elbow to the turbocharger.

Tighten the clamp.

Install a new gasket, oil drain tube, and capscrews.

Tighten the capscrews.

Install the intake and exhaust pipes to the turbocharger, and tighten the clamps.

Apply a film of high-temperature anti-seize compound, Part Number 3823097, or equivalent, to the turbocharger mounting studs and to the flange area on the retaining nuts. Properly applying anti-seize compound will reduce the possibility of the nuts loosening over time.

If installing a new turbocharger, install the coolant and oil fittings into the bearing housing.

NOTE: Use a ratchet and deepwell socket to install these fittings.

CAUTION  Proper routing of the turbocharger oil supply tube is critical to prevent failure. Avoid any tube-to-metal contact.

Install the turbocharger oil supply hose onto the oil supply fitting. The oil supply hose must point directly downward in order for it to properly connect to the oil supply fitting on the lubricating oil filter head.

Install the turbocharger actuator coolant supply and return fittings into the electronic actuator. Refer to Procedure 010-041 in Section 10.

WARNING  This component weighs 23 kg [50 lb] or more. To avoid personal injury, use a hoist or get assistance to lift this component.

CAUTION  Do not rotate the turbocharger turbine housing. Loosening turbine v-band and rotating the turbine housing can cause damage to internal variable geometry mechanism.

NOTE: Thread a lifting strap around the turbocharger bearing housing. Take care not to bend the coolant lines when lifting the turbocharger.

Care must be taken not to damage the turbocharger compressor inlet air temperature sensor, the turbocharger speed sensor, and the turbocharger actuator coolant lines when installing the turbocharger.

Install a new gasket, the turbocharger, and the four mounting nuts. Tighten the mounting nuts.

Install a new o-ring seal, the clamp, and the discharge elbow to the turbocharger.

Tighten the clamps.

Install a new gasket, oil drain tube, and capscrews.

Tighten the capscrews.

Connect the oil supply hose to the oil supply fitting located on the lubricating oil filter head.

Tighten the oil supply hose.