| TIBURON(GK) >2004 > G 2.0 DOHC > Engine Mechanical System > Cylinder Block > Crankshaft>Repair procedures |

DISASSEMBLY
1. | Remove the timing belt, front case, flywheel, cylinder head assembly and oil pan. For details, refer to the respective chapters.
2. | Remove the rear plate and the rear oil seal.
3. | Remove the connecting rod caps.
Put the main bearing caps in order of their original position and direction for easier reassembly.
4. | Remove the main bearing caps and remove crankshaft. Keep the bearings in order by cap number.
5. | Remove the crankshaft position sensor wheel.
DISASSEMBLY
1. | Remove the transmission and clutch.
2. | Remove the flywheel.
INSPECTION
1. | Check the crankshaft journals and pins for damage, uneven wear and crack. Also check oil holes for clogging. Correct or replace any defective part.
2. | Inspect the crankshaft journal for taper and out - of - round.
Standard value Crankshaft journal O.D. : 57 mm (2.2440 in.) Crankshaft pin O.D. : 45 mm (1.7717 in.) Crankshaft journal, pin out-of-round and taper 0.01 mm : (0.0004 in.) or less
MAIN BEARINGS AND CONNECTING ROD BEARINGS Visually inspect each bearing for peeling, melting, seizure and improper contact. Replace the defective bearings. OIL CLEARANCE MEASUREMENT
1. | Measure the diameter of crankshaft journal and pin.
2. | Measure the diameter of crankshaft bore and connecting rod bore.
3. | Measure the thickness of crankshaft bearing and connecting rod bearing.
4. | Measure the clearance by the value that subtract the diameter of journal and pin and the thickness of bearing from the diameter of bore.
Main bearing oil clearance : 0.028 ~ 0.046 mm (0.0011 - 0.0018 in.) Connecting rod bearing oil clearance : (To set limits to new parts) 0.024 ~ 0.042 mm (0.0009 ~ 0.0017 in.)
OIL SEAL Check front and rear oil seals for damage or worn lips. Replace any defective seal. BEARING CAPS After installing the bearing caps, make sure that the crankshaft turns smoothly and the end play is correct. If the end play exceeds the service limit, replace the crankshaft bearing.
Standard value : 0.06 ~ 0.26 mm (0.0023 ~ 0.010 in.) Limit : 0.30 mm (0.0118 in.)
SENSOR WHEEL
1. | Remove the crankshaft sensor wheel.
2. | Check the crankshaft sensor wheel for damage, crack and wear. Replace if necessary.
3. | Check the clearance between crankshaft sensor wheel and crank position sensor with a depth gauge.
Standard value Clearance between crankshaft sensor wheel and crank position sensor : 0.5 ~ 1.1mm (0.020 ~ 0.043in.)
• | Measure the depth of the top of the sensor wheel tooth and the cylinder block mounting surface.
• | Measure the difference between sensor length and depth.
• | Sensor length is the distance between the end of sensor and inner point of contacting face.
INSPECTION
1. | Check the clutch disc contacting surface of the flywheel for damage and wear. Replace the flywheel if excessively damaged or worn.
2. | Check the clutch disc contacting surface of the flywheel for runout.
Standard value Flywheel run-out : 0.1 mm (0.004 in.)
3. | Check the ring gear for damage, crack and wear, and replace if necessary.
REASSEMBLY
1. | Install the upper main bearing inserts in the cylinder block. When reusing the main bearing, remember to install them by referring to the location marks made when disassembling.
2. | Install the crankshaft. Apply engine oil to the journals.
3. | Install bearing caps and tighten the cap bolts to the specified torque in the sequence of the center, No.2, No.4 front and rear caps. Cap bolts should be tightened evenly in from 2 to 3 stages before they are tightened to the specified torque. The caps should be installed with the arrow mark directed toward the crank pulley side of engine. Cap numbers must be correct.
Tightening torque Main bearing cap bolt : 27 ~ 33 Nm (270 ~ 330 kg.cm, 20 ~ 24lb.ft) + (60° ~ 65°) Connecting rod cap bolt : 50 ~ 53 Nm (500 ~ 530 kg.cm, 37 ~ 39 lb.ft)
4. | Make certain that the crankshaft turns freely and has the proper clearance between the center main bearing thrust flange and the connecting rod big end bearing.
Standard value Connecting rod end play : 0.10 ~ 0.25 mm (0.0039 ~ 0.0098 in.)
5. | Using the special tool, crankshaft rear oil seal installer (09231 - 21000) as shown, install the oil seal in the crankshaft rear oil seal case.Press fit the oil seal being careful not to align it wrong.
6. | Install the rear plate and tighten the bolts.
7. | Install the connecting rod caps.
8. | Install the flywheel, front case, oil pan and timing belt. For further details, refer to the respective chapters.
REASSEMBLY
Install the flywheel assembly and tighten the bolts to the specified torque.
Tightening torque Flywheel bolt : 120 ~ 130 Nm (1200 ~ 1300 kg.cm, 90 ~ 96 lb.ft)