Turbocharger: Service and Repair

REMOVAL AND INSTALLATION





















Required Special Tools:

- MB992274: Palm Socket
- MB991614: Angle Gauge

REMOVAL SERVICE POINTS

[[A]] TURBOCHARGER COMPRESSOR BRACKET REMOVAL





Use special MB992274 to remove the turbocharger compressor bracket mounting bolt (cylinder block side).

[[B]] WASTE GATE ACTUATOR REMOVAL





CAUTION:
Never loosen the locking nuts and adjusting rod of the waste gate actuator.

[[C]] TURBOCHARGER OIL FEED TUBE REMOVAL

CAUTION:
Take care not to allow foreign objects to get into the oil passage hole of the turbocharger assembly after the turbocharger oil feed tube is removed.

INSTALLATION SERVICE POINTS

]]A[[ TURBOCHARGER INSTALLATION

1. Clean the turbocharger oil feed tube, turbocharger water feed pipe and turbocharger water return pipe fitting, the inside of eye bolts, and individual pipe for clogs.

2.
CAUTION:
Take care not to allow foreign objects to get into the turbocharger.

Clean or use compressed air to remove any carbon particles stuck to the oil passage of the turbocharger.

3. Refill new engine oil at the turbocharger oil feed tube fitting hole of the turbocharger.

]]B[[ TURBOCHARGER OIL RETURN TUBE GASKET INSTALLATION





Install the gasket as its protrusion is in the direction shown. Install the gasket so that its protrusion faces in the direction shown in the illustration.

]]C[[ TURBOCHARGER BRACKET/TURBOCHARGER BRACKET AND TURBOCHARGER ASSEMBLY COUPLING BOLT INSTALLATION





1. Check that the turbocharger bracket is in close contact with the turbocharger assembly and with the cylinder block, and then temporarily tighten the turbocharger bracket.
2. Tighten the bolt of the cylinder block side to the specified torque.
Tightening torque: 51± 7Nm (38± 5 ft-lb)
3. Tighten the turbocharger bracket and the turbocharger assembly coupling bolt to the specified torque.
Tightening torque: 64± 5Nm (48± 3 ft-lb)


]]D[[ EXHAUST MANIFOLD AND TURBOCHARGER ASSEMBLY COUPLING BOLT AND NUT INSTALLATION









1. Tighten the bolts and nuts according to the procedure below.
(1) Install two washers with their identification holes facing outside as shown in the figure.
(2) Tighten the bolts and nuts to 29 ± 2 Nm (22 ± 1 ft-lb) in the order of number shown in the figure.
(3) Use special tool MB991614 to tighten bolts and nuts 65 ± 5 degrees angle.

]]E[[ TURBOCHARGER EXHAUST OUTLET FITTING BRACKET INSTALLATION





1. Check that the turbocharger exhaust outlet fitting bracket is in close contact with the turbocharger exhaust outlet fitting and with the cylinder block, and then temporarily tighten the turbocharger exhaust outlet fitting bracket.
2. Tighten the bolt of the cylinder block side to the specified torque.
Tightening torque: 51± 7Nm (38± 5 ft-lb)
3. Tighten the bolt of the turbocharger exhaust outlet fitting bracket side to the specified torque.
Tightening torque: 64± 5Nm (48± 3 ft-lb)


]]F[[ TURBOCHARGER COMPRESSOR BRACKET INSTALLATION





1. Check that the turbocharger compressor bracket is in close contact with the turbocharger assembly and with the cylinder block, and then temporarily tighten the turbocharger compressor bracket.





2. Use special tool MB992274 to tighten the turbocharger compressor bracket mounting bolt (cylinder block side) to the specified torque.
Tightening torque: 51± 7Nm (38± 5 ft-lb)
3. Tighten the bolt of the turbocharger assembly side to the specified torque.
Tightening torque: 51± 7Nm (38± 5 ft-lb)