Oil Pump

1. Assemble the oil pump gear to the front case and rotate it to verify smooth rotation with no looseness.
2. Make sure that there is no ridge wear on the contact surface between the front case and the gear surface of the oil pump cover.
3. Install the drive and driven gears to the front case. Measure the tip clearance of the gears.

   [Standard value] 

   Drive gear : 0.16 ~ 0.21 mm (0.0063 ~ 0.0083 in.)

   Driven gear : 0.18 ~ 0.21 mm (0.0071 ~ 0.0083 in.)

   [Limit] 

   Drive gear : 0.25 mm (0.0098 in)

   Drive gear : 0.25 mm (0.0098 in.)

   Fig 1: Measuring Tip Clearance Of Drive & Driven Gears

   Courtesy of HYUNDAI MOTOR CO.
4. Check the side clearance.

[Standard value] 

Drive gear : 0.08 ~ 0.14 mm (0.0031 ~ 0.0055 in.)

Driven gear : 0.06 ~ 0.12 mm (0.0024 ~ 0.0047 in.)

[Limit] 

Drive gear : 0.25 mm (0.0098 in)

Driven gear : 0.25 mm (0.0098 in.)

Fig 2: Checking Side Clearance

Courtesy of HYUNDAI MOTOR CO.