Lubrication System: Inspection

1. Assemble the oil pump gear to the front case and rotate it to ensure smooth rotation with no looseness.
2. Ensure that there is no ridge wear on the contact surface between the front case and gear surface of the oil pump cover.
3. With the drive and driven gears installed into the front case, measure the tip clearance of the gears.

   [Standard value]

   Drive gear: 0.160-0.205 mm (0.0063-0.0081 in.)

   Driven gear: 0.180-0.205 mm (0.0071-0.0081 in.)

   [Limit]

   Drive gear : 0.25 mm (0.0098 in.)

   Driven gear : 0.25 mm (0.0098 in.)

   Fig 1: Checking Oil Pump Gear Tip Clearance

   Courtesy of KIA MOTORS AMERICA, INC.
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 Oil Pump Gear Side Clearance

Courtesy of KIA MOTORS AMERICA, INC.