Mitsubishi Outlander manuals

Mitsubishi Outlander: Crankshaft and Cylinder Block

REMOVAL AND INSTALLATION

Mitsubishi Outlander. Engine Overhaul

Removal steps

  1. Crankshaft bearing cap bolt
  2. Crankshaft bearing cap
  3. Crankshaft bearing lower
  4. Crankshaft
  5. Crankshaft bearing upper
  6. Thrust bearing
  7. Crankshaft sensing ring
  8. Cylinder block

REMOVAL SERVICE POINT

CRANKSHAFT REMOVAL

When temporarily placing the crankshaft with the crankshaft sensing ring attached, temporarily place it on a V-block to prevent teeth of the sensing ring from deforming.

NOTE: If a tooth bends, be sure to replace the crankshaft sensing ring with a new one.

INSTALLATION SERVICE POINTS

CRANKSHAFT SENSING RING INSTALLATION

Tighten crankshaft sensing ring bolts to the torque of 11 +- 1 N*m (98 +- 8 in-lb) in the tightening order shown in the illustration.

Mitsubishi Outlander. Engine Overhaul

THRUST BEARING INSTALLATION

1. Install the thrust bearing on the Number 3 bearing on the cylinder block side. Application of engine oil makes the installation easy.

2. Install the thrust bearing so that the grooved side is on the crankshaft weight side.

Mitsubishi Outlander. Engine Overhaul

CRANKSHAFT BEARING UPPER INSTALLATION

1. When replacing the crankshaft bearing upper, select a bearing with the size corresponding to the crankshaft journal diameter in the table below.

Mitsubishi Outlander. Engine Overhaul

Mitsubishi Outlander. Engine Overhaul

2. The crankshaft bearing upper has an identification mark at the illustrated position.

Mitsubishi Outlander. Engine Overhaul

3. Install the selected crankshaft bearing upper.

CRANKSHAFT BEARING LOWER INSTALLATION

1. When replacing the crankshaft bearing lower, select a bearing with the size corresponding to the crankshaft journal diameter in the table below.

Mitsubishi Outlander. Engine Overhaul

Mitsubishi Outlander. Engine Overhaul

2. The crankshaft bearing lower has an identification mark at the illustrated position.

Mitsubishi Outlander. Engine Overhaul

3. Install the selected crankshaft bearing lower.

CRANKSHAFT BEARING CAP / CRANKSHAFT BEARING CAP BOLT INSTALLATION

1. Install the crankshaft bearing cap with reference to the identification mark as illustrated.

Mitsubishi Outlander. Engine Overhaul

2. Make sure that the underhead length of the bolt is at or below the limit before installing the crankshaft bearing cap bolt. If the length exceeds the limit, replace the bolt with a new one.

Limit: 75.5 − 76.5 mm (2.972 − 3.012 inch)

3. Apply engine oil to the threaded portion and seat surface of the bolt.

4. Tighten crankshaft bearing cap bolts to the torque of 26.5 +- 2.0 N*m (20 +- 1 ft-lb) according to the tightening order.

Mitsubishi Outlander. Engine Overhaul

CAUTION

5. Use special tool Angle gauge (MB991614) to tighten bolts 45º according to the tightening order.

Mitsubishi Outlander. Engine Overhaul

6. Check end play of the crankshaft after installing the crankshaft bearing cap. If the end play exceeds the limit, replace the thrust bearing.

Standard value: 0.05 − 0.25 mm (0.002 − 0.010 inch)
Limit: 0.4 mm (0.016 inch)

Mitsubishi Outlander. Engine Overhaul

INSPECTION

CRANKSHAFT OIL CLEARANCE (PLASTIGAGE METHOD)

Oil clearance can be easily measured by using a "plastigage". When using a "plastigage", perform measurement in the following procedure.

1. Fully wipe oil off the outside diameter of the crankshaft and inside diameter of the bearing.

2. Assemble the crankshaft.

3. Place a plastigage in length equal to the bearing width on the journal shaft straight in alignment with the shaft center.

4. Carefully install the bearing cap and tighten the bolt according to the main point of installation >>B<<.

5. Remove the bolt, and then carefully remove the crankshaft bearing cap.

Mitsubishi Outlander. Engine Overhaul

6. Measure the crushed plastigage width (area most widely crushed) using a scale printed on the plastigage bag.

Standard value: 0.012 − 0.030 mm (0.0005 − 0.0012 inch)
Limit: 0.08 mm (0.0031 inch)

Mitsubishi Outlander. Engine Overhaul

CYLINDER BLOCK

1. Visually check the cylinder block for scratch, rust and corrosion. Use a flaw detecting agent to check for cracks. If it is found faulty, repair or replace it.

2. Measure distortion on the top surface of the cylinder block using a straight edge and free gauge.

If distortion exceeds the limit, grind and repair it.

A gasket or the like must not be adhered to the top surface of the cylinder block during measurement.

Distortion on bottom
Limit: Within 0.05 mm (0.0020 inch)
Grinding limit: 0.2 mm (0.008 inch)

Mitsubishi Outlander. Engine Overhaul

3. Check the cylinder wall for scratch or seizure. If there is any defect, replace the cylinder block.

4. Measure the bore and cylindricity of the cylinder using a cylinder gauge.

If the cylinder is excessively worn, repair the cylinder and replace the piston and piston rings.

Measuring points are as shown in the illustration.

Standard value
Cylinder bore: 88 mm (3.46 inch)
Cylindricity: 0.0076 mm (0.0003 inch)

Mitsubishi Outlander. Engine Overhaul

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