Removal
Remove the internal and external gears of the oil pump from the front cover, having previously marked their relative positions.
Examination
1. Check the oil pump gear teeth for wear or damage.
2. Check the axial clearance of the oil pump rotors. Axial clearance: 0.02–0.07 mm.
3. Use a feeler gauge to measure the gap between the teeth of the oil pump rotors. The gap between the teeth of the oil pump rotors: 0.1–0.2 mm.
(This article is based on information from the website: HYUNDAIBOOK.ru)
4. Check the radial clearance of the oil pump rotors.
Plunger and spring
1. Check the smooth movement of the plunger.
2. Check the spring for deformation or damage.
Checking the oil pressure sensor
1. Use an ohmmeter to check the conductivity of the connection between the sensor terminal and the cylinder block. If there is no conductivity, replace the sensor.
2. Use an ohmmeter to check the conductivity of the connection between the sensor terminal and the cylinder block with the sensor rod extended. If there is continuity even with the piston rod extended, replace the sensor.
3. However, if there is no conductivity even when a vacuum of 50 kPa is applied to the sensor hole, the sensor is working properly.
Checking the oil sprayer
1. Check the oil spray nozzle and check valve for blockages.
2. Check the oil sprayer for damage or deformation.
Installation
1. Install the outer rotor of the oil pump into the front cover, having first aligned the previously applied marks.
Caution: Before installing the rotor, lubricate it with engine oil.
2. Using a special tool, screw in the oil pressure sensor, having previously lubricated the sensor threads with a layer of sealant.
Caution: Do not tighten the pressure sensor with high torque.