Oil pump housing, oil pump and balance shafts (engines 2.0 l / 2.4 l).
1 - plug, 2 - oil filter, 3 - oil pump driven gear bolt, 4 - oil pump housing, 5 - oil pump housing gasket, 6 - right balance shaft, 7 - front bearing, 8 - rear bearing, 9 - left balance shaft, 10 - oil pump cover, 11 - oil pump driven gear, 12 - oil pump drive gear, 13 - gasket, 14 - upper part of the oil pan, 15 - lower part of the oil pan, 16 • drain plug, 17 - gasket, 18 - oil intake, 19 - O-ring.
Oil pump housing and oil pan (engine 2.7 l).
1 - crankshaft oil seal, 2 - crankshaft sprocket, 3 - oil pump housing, 4 - oil pump inner gear, 5 - oil pump outer gear, 6 - oil pump cover, 7 - upper oil slinger plate, 8 - oil intake gasket, 9 - oil intake, 10 - pressure reducing valve plunger, 11 - pressure reducing valve plunger spring, 12 - plug, 13 - lower oil baffle plate, 14 - upper part of the oil pan, 15 - oil filter, 16 - oil pressure switch, 17 - lower part of the oil pan.
Disassembly (engines 2.0 l / 2.4 l)
1. Remove the timing belt (see chapter "Engine - Mechanical", chapter "Timing Belt Replacement").
2. Turn away bolts of fastening of the oil pallet.
3. Tap the oil pan with a rubber-faced hammer, then remove the pan (upper and lower parts).
4. Remove the oil pickup and its gasket.
5. Remove the oil pump housing assembly.
6. Remove the oil pressure switch.
7. Remove the oil filter bracket and its gasket.
8. Using a special wrench, unscrew the oil pump plug in the oil pump housing.
9. Turn out the plug on the left side of the cylinder block and insert a screwdriver with a diameter of 8 mm into the technological hole. The screwdriver must go to a depth of more than 60 mm.
10. Turn away a bolt of fastening of a conducted gear wheel of the oil pump and the left balancing shaft.
11. Turn away bots of fastening of the case of the oil pump, then remove the case of the oil pump in gathering and a lining. Remove both balance shafts from the cylinder block.
12. Remove the oil pump cover from the oil pump housing.
13. Remove the oil pump gears from the oil pump housing.
14. Remove the screwdriver from the service hole.
Disassembly (engine 2.7 l)
1. Using a 24 mm tool socket, unscrew the oil pressure switch.
Note: Be careful not to damage the oil pressure switch as sealant has been applied to the sensor threads.
2. Remove the oil filter and oil pan.
3. Remove the oil pickup.
4. Turn away three bolts of fastening and remove an arm of the oil filter and a lining.
5. Turn out a stopper of the reducing valve, remove a spring and a plunger.
6. Remove the oil pump housing assembly.
Examination
Oil pump housing
1. Check the condition of all oil channels. Clean if necessary.
2. (2.0L / 2.4L engines) Check the balance shaft front bearing for wear, damage or nicks. If there is any bearing failure, replace the oil pump housing.
3. Check the oil pump housing for cracks or other damage.
4. Replace the oil pump housing if cracks or damage are found.
Balance shaft (engines 2.0 l / 2.4 l)
1. Check the balance shaft journals for wear or nicks.
2. If there is excessive wear or scoring, carefully check the condition of the bearings.
3. Replace bearings or balance shaft if necessary.
- Right balance shaft:
- Oil clearance:
- in the front bearing: 0.020-0.061 mm
- in the rear bearing: 0.050-0.091 mm
- Left balance shaft:
- Oil clearance:
- in the front bearing: 0.020-0.054 mm
- in the rear bearing: 0.042-0.083 mm
Stuffing box
1. Check the seal lip for wear or damage. Replace the seal if necessary.
2. Check the seal lip for deterioration. Replace the seal if necessary.
Engine oil pressure switch
The procedure for checking the sensor-switch is given in chapter "Lubrication system".
Pressure reducing valve
The procedure for checking the pressure reducing valve is given in chapter "Lubrication system".
Oil filter bracket
1. Check the contact surface of the bracket with the oil filter for damage.
2. Check the oil filter bracket for cracks and oil leaks.
Oil pump (engines 2.0 l / 2.4 l)
1. Install the oil pump gears into the housing. Check the smoothness of rotation of the gears and the absence of a significant gap in the engagement.
2. Check up absence of annular signs of wear on surfaces of contact of the case and a cover of the oil pump with gear wheels.
3. Measure the clearance between the pump housing and the tops of the gear teeth.
- Rated value:
- Drive gear: 0.16-0.21mm
- Driven gear: 0.18-0.21mm
- Maximum allowable value:
- Drive gear: 0.25mm
- Driven gear: 0.25mm
4. Measure the end clearance of the gears.
- Rated value:
- Drive gear: 0.08-0.14mm
- Driven gear: 0.06-0.12mm
- Maximum allowable value:
- Drive gear: 0.25mm
- Driven gear: 0.25mm
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3. Install special tool (mandrel) on the front of the crankshaft and apply a light coat of engine oil to the outside of the special tool before installing the oil pump housing. Install special tool (mandrel) on the front of the crankshaft and apply a light coat of engine oil to the outside of the special tool before installing the oil pump housing.
4. Install a new gasket on the oil pump housing assembly, then temporarily tighten the mounting bolts (with collar).
5. Tighten the oil pump housing mounting bolts (M6) assembled with rated torque.
- Tightening torque: 20-27 Nm
6. Insert a screwdriver into the plug hole on the left side of the cylinder block. Make sure the balance shaft is in the correct position, then replace the bolt with a new one, reinstall the bolt and tighten it.
7. Install a new O-ring into the groove in the oil pump housing.
8. Using the special tool, tighten the oil pump plug to the specified torque.
- Tightening torque: 20-27 Nm
9. Procedures for installing the oil pan and oil pressure switch are given in chapter "Lubrication system".
Assembly (engine 2.7 l)
1. Install the oil pump housing assembly on the gasket.
- Torque:
- Oil pump housing: 12-15 Nm
- Oil pump cover: 8-12 Nm
2. Using a mandrel, install the crankshaft oil seal into the oil pump housing until it stops against the seating surface.
3. Install pressure relief valve plunger and spring. Tighten the plug to the nominal torque.,
- Tightening torque: 40-50 Nm
4. Install the oil pickup on a new gasket and tighten the oil pickup mounting bolts.
- Tightening torque: 15-22 Nm
5. Procedures for installing the oil pan and oil pressure switch are given in chapter "Lubrication system".