Main Bearing

Install the grooved main bearing (upper bearing) on the cylinder block side.

Fig 1: Installing Main Bearing
Courtesy of KIA MOTORS AMERICA, INC.
Install the grooveless main bearing (lower bearing) on the main bearing cap side.
Install the crankshaft. Apply engine oil to the journal and pin.
Caps should be installed with the arrow mark directed toward the front of the engine. The cap number sequence must be correct.
Tighten all cap bolts to the specified torque according to the order as shown in the picture.
Tightening torque:

Main bearing cap bolt: 68.6-78.5 N.m

(700-800 kg. cm, 50.6-57.9 lb. ft)
Cap bolt should be tightened to specified torque in 4-5 steps before being tightened to the specified torque.
Make certain that the crankshaft turns freely and has the proper crankshaft end play.
Crankshaft end play:

Standard value: 0.050-0.250 mm

(0.00197-0.0098 in.)

Limit: 0.35 mm (0.014 in.)

Fig 2: Measuring Crankshaft End Play
Courtesy of KIA MOTORS AMERICA, INC.
Assemble the rear oil seal to oil case using the special tool (09231-33000).

Fig 3: Using Special Tool (09231-33000)
Courtesy of KIA MOTORS AMERICA, INC.
Smear sealant on area indicated in the figure and install the oil seal case in the cylinder block.

Fig 4: Install Oil Seal Case In Cylinder Block
Courtesy of KIA MOTORS AMERICA, INC.

Tightening torque:

Oil seal case bolt: 10-12 N.m

(100-120 kg. cm, 7.38-8.85 lb. ft)
Install the rear plate to the specified torque.
Tightening torque:

Rear plate: 10-12 N.m

(100-120 kg. cm. 7.38-8.85 lb. ft)
Install the drive plate and the adapter plate.
Tightening torque:

Drive bolt: 73-77 N.m

(730-770 kg. cm, 53.85-56.80 lb. ft)

Fig 5: Installing Drive Plate & Adapter Plate

Courtesy of KIA MOTORS AMERICA, INC.