Oil Pump: Service and Repair

REMOVAL
1. Disconnect negative cable at battery.
2. Remove timing belt as previously outlined.
3. Remove generator and its bracket.





NOTE: When installing bracket, tighten nut (A) first.

4. Remove power steering pump bracket or A/C compressor bracket, if equipped.





NOTE: When installing bracket, tighten bolt (B) first.

5. Remove oil pan and oil pump strainer as previously outlined.





6. Install mounting member.
Tightening Torque
(a): 55 Nm (5.5 kg-m, 40.0 ft. lbs.)
(b): 45 Nm (4.5 kg-m, 32.5 ft. lbs.)





7. Remove crankshaft timing belt pulley and timing belt guide. With crankshaft locked, remove crankshaft timing belt pulley bolt.





8. Remove oil pump assembly after removing bolts.

DISASSEMBLY





1. Remove oil level gauge guide bolt and pull out guide from oil pump.





2. Remove rotor plate.





3. Remove outer rotor and inner rotor.

INSPECTION





^ Check oil seal lip for fault or other damage. Replace as necessary.





NOTE: When installing oil seal, press-flit It till its end face is flush with oil pump case end face.





^ Check outer and inner rotors, rotor plate, and oil pump case for excessive wear or damage.

MEASUREMENT





^ Radial clearance
Check radial clearance between outer rotor and case, using thickness gauge. If clearance exceeds its limit, replace outer rotor or case.
Limit on radial clearance between outer rotor and case: 0.310 mm (0.0122 inch)





^ Side clearance
Using straight edge and thickness gauge, measure side clearance.
Limit on side clearance: 0.15 mm (0.0059 inch)

ASSEMBLY
1. Wash, clean and then dry all disassembled parts.
2. Apply thin coat of engine oil to inner and outer rotors, oil seal lip portion, and inside surfaces of oil pump case and plate.





3. Install outer and inner rotors to pump case.





4. Install rotor plate. Tighten 5 screw securely.
After installing plate, check to be sure that gears turn smoothly by hand.
Tightening Torque (a): 11 Nm (1.1 kg-m, 8.0 ft. lbs.)





5. Apply engine oil to O-ring and install O-ring and guide.

INSTALLATION
1. Install two oil pump pins and oil pump gasket to cylinder block.
Use a new gasket.





2. To prevent oil seal lip from being damaged or upturned when installing oil pump to crankshaft, fit special tool (Oil seal guide) to crankshaft, and apply engine oil to special tool.
Special Tool
(A): 09926-18210





3. Install oil pump to cylinder block.
As there are 2 types of oil pump bolts, refer to figure for their correct use and tighten them to specified torque.
Tightening Torque (a): 11 Nm (1.1 kg-m, 8.0 ft. lbs.)





4. Install rubber seal between oil pump and water pump.





5. Install timing pulley key and crank timing belt pulley. Refer to figure for proper installation of these parts.
With crankshaft locked, tighten crank timing belt pulley bolt to specified torque.
Tightening Torque (a): 128 Nm (12.8 kg-m, 92.5 ft. lbs.)
6. Support engine and remove mounting member.
7. Install timing belt, tensioner, oil pump strainer, oil pan and other parts as previously outlined.
8. Check to ensure that all removed parts are back in place.
Reinstall any necessary parts which have not been reinstalled.
9. Adjust water pump drive belt tension.
10. Adjust power steering pump belt tension or A/C compressor belt tension, if equipped.
11. Refill engine with engine oil.
12. Connect negative cable at battery.
13. After completing installation, check oil pressure by running engine.